5.2.6 Dependency update & Fixes the bug (The problem was kotlinx.serialization!!!)

Fixes unable to download some images

.github/workflows/watchdiff.yml

@@ -0,0 +1,23 @@
+# This is a basic workflow that is manually triggered
+
+name: Watch hitomi.la file changes
+
+on:
+  schedule:
+    - cron: "*/10 * * * *"
+
+jobs:
+  watchdiff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: watchdiff
+      - name: Download files
+        run: ./fetch.sh
+      - name: Commit and Push
+        id: push
+        run: |
+            git config --global user.name 'Watchdiff bot'
+            git config --global user.email 'tom5079@naver.com'
+            { git add . && git commit -m "File update" && git push; } | tail -1 | grep -q "nothing to commit"

.idea/compiler.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="1.8" />
+    <bytecodeTargetLevel target="11" />
   </component>
 </project>

.idea/copyright/profiles_settings.xml

@@ -1,7 +1,7 @@
 <component name="CopyrightManager">
   <settings>
     <module2copyright>
-      <element module="Pupil" copyright="GPL" />
+      <element module="Project Files" copyright="GPL" />
     </module2copyright>
   </settings>
 </component>

.idea/gradle.xml

@@ -4,9 +4,11 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
-        <option name="testRunner" value="PLATFORM" />
+        <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleHome" value="/usr/share/java/gradle" />
+        <option name="gradleJvm" value="11" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
@@ -14,7 +16,6 @@
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
-        <option name="useQualifiedModuleNames" value="true" />
       </GradleProjectSettings>
     </option>
   </component>

.idea/jarRepositories.xml

@@ -71,5 +71,20 @@
       <option name="name" value="maven3" />
       <option name="url" value="http://dl.bintray.com/piasy/maven" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="https://guardian.github.io/maven/repo-releases/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenLocal" />
+      <option name="name" value="MavenLocal" />
+      <option name="url" value="file:$USER_HOME$/.m2/repository/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="maven2" />
+      <option name="name" value="maven2" />
+      <option name="url" value="https://oss.sonatype.org/content/repositories/snapshots" />
+    </remote-repository>
   </component>
 </project>

.idea/misc.xml

@@ -1,6 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="DesignSurface">
+    <option name="filePathToZoomLevelMap">
+      <map>
+        <entry key="app/src/main/res/layout/reader_activity.xml" value="0.14351851851851852" />
+      </map>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

.idea/runConfigurations.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

README.md

@@ -2,8 +2,8 @@
 *Pupil, Hitomi.la viewer for Android*  
 
 ![](https://img.shields.io/github/downloads/tom5079/Pupil/total)  
-[![](https://img.shields.io/github/downloads/tom5079/Pupil/5.1.6-hotfix7/Pupil-v5.1.6-hotfix7.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.1.6-hotfix7/Pupil-v5.1.6-hotfix7.apk)  
-[![](https://discordapp.com/api/guilds/610452916612104194/embed.png?style=banner2)](https://discord.gg/Stj4b5v)  
+[![](https://img.shields.io/github/downloads/tom5079/Pupil/5.2.6/Pupil-v5.2.6.apk?color=%234fc3f7&label=DOWNLOAD%20APP&style=for-the-badge)](https://github.com/tom5079/Pupil/releases/download/5.2.6/Pupil-v5.2.6.apk)
+[![](https://discordapp.com/api/guilds/610452916612104194/embed.png?style=banner2)](https://discord.gg/Stj4b5v)
 
 # Features
 ![Main Screen](https://github.com/tom5079/Pupil/blob/gh-pages/assets/images/main-screenshot.jpg?raw=true)
@@ -20,7 +20,7 @@ or Build app yourself
 
 # Contribution
 
-Any kind of contribution is appriciated. Feel free to leave PR!
+Any kind of contribution is appreciated. Feel free to leave PR!
 
 ## Tag Translation
 Head over to [tags branch](https://github.com/tom5079/Pupil/tree/tags)

app/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: "com.android.application"
 apply plugin: "kotlin-android"
 apply plugin: "kotlin-kapt"
-apply plugin: "kotlin-android-extensions"
+apply plugin: "kotlin-parcelize"
 apply plugin: "kotlinx-serialization"
 apply plugin: "com.google.android.gms.oss-licenses-plugin"
 
-if (file("google-services.json").exists() && file("src/debug/google-services.json").exists()) {
+if (file("google-services.json").exists()) {
     logger.lifecycle("Firebase Enabled")
     apply plugin: "com.google.gms.google-services"
     apply plugin: "com.google.firebase.crashlytics"
@@ -32,27 +32,27 @@ configurations {
 }
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
     defaultConfig {
         applicationId "xyz.quaver.pupil"
         minSdkVersion 16
-        targetSdkVersion 30
-        versionCode 63
-        versionName "5.1.6-hotfix7"
+        targetSdkVersion 31
+        versionCode 69
+        versionName "5.2.6"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }
     buildTypes {
         debug {
-            minifyEnabled true
-            shrinkResources true
+            defaultConfig.minSdkVersion 21
+
+            minifyEnabled false
+            shrinkResources false
 
             debuggable true
             applicationIdSuffix ".debug"
             versionNameSuffix "-DEBUG"
 
-            proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
-
             ext.enableCrashlytics = false
             ext.alwaysUpdateBuildId = false
         }
@@ -63,6 +63,9 @@ android {
             proguardFiles getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro"
         }
     }
+    buildFeatures {
+        viewBinding true
+    }
     kotlinOptions {
         jvmTarget = JavaVersion.VERSION_1_8.toString()
         freeCompilerArgs += "-Xuse-experimental=kotlin.Experimental"
@@ -71,44 +74,43 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
-    buildToolsVersion = "29.0.3"
 }
 
 dependencies {
     implementation fileTree(dir: "libs", include: ["*.jar", "*.aar"])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.0-M1"
-    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.0.0"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.0"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.2"
     
-    implementation "androidx.appcompat:appcompat:1.2.0"
-    implementation "androidx.activity:activity-ktx:1.2.0-beta01"
-    implementation "androidx.fragment:fragment-ktx:1.3.0-beta01"
+    implementation "androidx.appcompat:appcompat:1.4.0"
+    implementation "androidx.activity:activity-ktx:1.4.0"
+    implementation "androidx.fragment:fragment-ktx:1.4.0"
     implementation "androidx.preference:preference-ktx:1.1.1"
-    implementation "androidx.recyclerview:recyclerview:1.1.0"
-    implementation "androidx.constraintlayout:constraintlayout:2.0.2"
+    implementation "androidx.recyclerview:recyclerview:1.2.1"
+    implementation "androidx.constraintlayout:constraintlayout:2.1.2"
     implementation "androidx.gridlayout:gridlayout:1.0.0"
-    implementation "androidx.biometric:biometric:1.0.1"
-    implementation "androidx.work:work-runtime-ktx:2.4.0"
+    implementation "androidx.biometric:biometric:1.1.0"
+    implementation "androidx.work:work-runtime-ktx:2.7.1"
 
     implementation "com.daimajia.swipelayout:library:1.2.0@aar"
 
-    implementation "com.google.android.material:material:1.3.0-alpha03"
+    implementation "com.google.android.material:material:1.4.0"
 
-    implementation "com.google.firebase:firebase-core:17.5.1"
-    implementation "com.google.firebase:firebase-analytics:17.6.0"
-    implementation "com.google.firebase:firebase-crashlytics:17.2.2"
-    implementation "com.google.firebase:firebase-perf:19.0.9"
+    implementation platform('com.google.firebase:firebase-bom:29.0.3')
+    implementation "com.google.firebase:firebase-analytics-ktx"
+    implementation "com.google.firebase:firebase-crashlytics-ktx"
+    implementation "com.google.firebase:firebase-perf-ktx"
 
     implementation "com.google.android.gms:play-services-oss-licenses:17.0.0"
-    implementation "com.google.android.gms:play-services-mlkit-face-detection:16.1.1"
+    implementation "com.google.android.gms:play-services-mlkit-face-detection:16.2.1"
 
     implementation "com.github.clans:fab:1.6.4"
 
     //implementation "com.quiph.ui:recyclerviewfastscroller:0.2.1"
 
-    implementation 'com.github.piasy:BigImageViewer:1.6.7'
-    implementation 'com.github.piasy:FrescoImageLoader:1.6.7'
-    implementation 'com.github.piasy:FrescoImageViewFactory:1.6.7'
+    implementation 'com.github.piasy:BigImageViewer:1.8.1'
+    implementation 'com.github.piasy:FrescoImageLoader:1.8.1'
+    implementation 'com.github.piasy:FrescoImageViewFactory:1.8.1'
 
     //noinspection GradleDependency
     implementation "com.squareup.okhttp3:okhttp:$okhttp_version"
@@ -123,17 +125,17 @@ dependencies {
 
     implementation "ru.noties.markwon:core:3.1.0"
 
-    implementation "xyz.quaver:libpupil:1.8.16"
-    implementation "xyz.quaver:documentfilex:0.4-alpha02"
-    implementation "xyz.quaver:floatingsearchview:1.0.7"
+    implementation "org.jsoup:jsoup:1.14.3"
 
-    testImplementation "junit:junit:4.13"
-    androidTestImplementation "androidx.test.ext:junit:1.1.2"
-    androidTestImplementation "androidx.test:rules:1.3.0"
-    androidTestImplementation "androidx.test:runner:1.3.0"
-    androidTestImplementation "androidx.test.espresso:espresso-core:3.3.0"
-}
+    implementation "com.google.guava:guava:31.0.1-android"
 
-androidExtensions {
-    experimental = true
+    implementation "xyz.quaver:documentfilex:0.7.2"
+    implementation "xyz.quaver:floatingsearchview:1.1.7"
+
+    testImplementation "junit:junit:4.13.2"
+    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.0"
+    androidTestImplementation "androidx.test.ext:junit:1.1.3"
+    androidTestImplementation "androidx.test:rules:1.4.0"
+    androidTestImplementation "androidx.test:runner:1.4.0"
+    androidTestImplementation "androidx.test.espresso:espresso-core:3.4.0"
 }

app/proguard-rules.pro

@@ -32,4 +32,5 @@
     kotlinx.serialization.KSerializer serializer(...);
 }
 -keep class xyz.quaver.pupil.ui.fragment.ManageFavoritesFragment
--keep class xyz.quaver.pupil.ui.fragment.ManageStorageFragment
+-keep class xyz.quaver.pupil.ui.fragment.ManageStorageFragment
+-keep class com.hippo.quickjs.** { *; }

app/release/output-metadata.json

@@ -1,18 +1,20 @@
 {
-  "version": 2,
+  "version": 3,
   "artifactType": {
     "type": "APK",
     "kind": "Directory"
   },
   "applicationId": "xyz.quaver.pupil",
-  "variantName": "processReleaseResources",
+  "variantName": "release",
   "elements": [
     {
       "type": "SINGLE",
       "filters": [],
-      "versionCode": 63,
-      "versionName": "5.1.6-hotfix7",
+      "attributes": [],
+      "versionCode": 69,
+      "versionName": "5.2.6",
       "outputFile": "app-release.apk"
     }
-  ]
+  ],
+  "elementType": "File"
 }

app/src/androidTest/java/xyz/quaver/pupil/ExampleInstrumentedTest.kt

@@ -20,10 +20,15 @@
 
 package xyz.quaver.pupil
 
+import android.util.Log
+import android.webkit.*
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
+import kotlinx.coroutines.*
+import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
+import xyz.quaver.pupil.hitomi.*
 
 /**
  * Instrumented test, which will execute on an Android device.
@@ -32,10 +37,95 @@ import org.junit.runner.RunWith
  */
 @RunWith(AndroidJUnit4::class)
 class ExampleInstrumentedTest {
+    @Before
+    fun init() {
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+
+        runBlocking {
+            withContext(Dispatchers.Main) {
+                webView = WebView(appContext).apply {
+                    settings.javaScriptEnabled = true
+
+                    addJavascriptInterface(object {
+                        @JavascriptInterface
+                        fun onResult(uid: String, result: String) {
+                            _webViewFlow.tryEmit(uid to result)
+                        }
+                    }, "Callback")
+
+                    loadDataWithBaseURL(
+                        "https://hitomi.la/",
+                        """
+                            <script src="https://ltn.hitomi.la/jquery.min.js"></script>
+                            <script src="https://ltn.hitomi.la/common.js"></script>
+                            <script src="https://ltn.hitomi.la/search.js"></script>
+                            <script src="https://ltn.hitomi.la/searchlib.js"></script>
+                            <script src="https://ltn.hitomi.la/results.js></script>
+                        """.trimIndent(),
+                        "text/html",
+                        null,
+                        null
+                    )
+                }
+            }
+        }
+    }
 
     @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+    fun test_getGalleryIDsFromNozomi() {
+        runBlocking {
+            val result = getGalleryIDsFromNozomi(null, "index", "all")
+
+            Log.d("PUPILD", "getGalleryIDsFromNozomi: ${result.size}")
+        }
+    }
+
+    @Test
+    fun test_getGalleryIDsForQuery() {
+        runBlocking {
+            val result = getGalleryIDsForQuery("female:crotch tattoo")
+
+            Log.d("PUPILD", "getGalleryIDsForQuery: ${result.size}")
+        }
+    }
+
+    @Test
+    fun test_getSuggestionsForQuery() {
+        runBlocking {
+            val result = getSuggestionsForQuery("fem")
+
+            Log.d("PUPILD", "getSuggestionsForQuery: ${result.size}")
+        }
+    }
+
+    @Test
+    fun test_urlFromUrlFromHash() {
+        runBlocking {
+            val galleryInfo = getGalleryInfo(2102416)
+
+            val result = galleryInfo.files.map {
+                imageUrlFromImage(2102416, it, false)
+            }
+
+            Log.d("PUPILD", result.toString())
+        }
+    }
+
+    @Test
+    fun test_getGalleryInfo() {
+        runBlocking {
+            val galleryInfo = getGalleryInfo(2102416)
+
+            Log.d("PUPILD", galleryInfo.toString())
+        }
+    }
+
+    @Test
+    fun test_getGalleryBlock() {
+        runBlocking {
+            val block = getGalleryBlock(2102731)
+
+            Log.d("PUPILD", block.toString())
+        }
     }
 }

app/src/main/AndroidManifest.xml

@@ -6,10 +6,11 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="21"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="21" />
+    <uses-permission-sdk-23 android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission-sdk-23 android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.VIBRATE"/>
 
     <uses-feature android:name="android.hardware.camera" android:required="false" />
     <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
@@ -58,7 +59,8 @@
         <activity
             android:name=".ui.ReaderActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
-            android:parentActivityName=".ui.MainActivity">
+            android:parentActivityName=".ui.MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
 
@@ -222,7 +224,8 @@
         <activity
             android:name=".ui.MainActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
-            android:theme="@style/NoActionBarAppTheme">
+            android:theme="@style/NoActionBarAppTheme"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <action android:name="android.intent.action.VIEW" />

app/src/main/java/xyz/quaver/pupil/Pupil.kt

@@ -18,14 +18,19 @@
 
 package xyz.quaver.pupil
 
+import android.annotation.SuppressLint
 import android.app.Application
 import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.content.Context
 import android.content.Intent
+import android.content.pm.ApplicationInfo
 import android.net.Uri
 import android.os.Build
+import android.util.Log
+import android.webkit.*
+import android.widget.Toast
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.content.ContextCompat
 import androidx.preference.PreferenceManager
@@ -34,18 +39,22 @@ import com.github.piasy.biv.loader.fresco.FrescoImageLoader
 import com.google.android.gms.common.GooglePlayServicesNotAvailableException
 import com.google.android.gms.common.GooglePlayServicesRepairableException
 import com.google.android.gms.security.ProviderInstaller
-import com.google.firebase.analytics.FirebaseAnalytics
+import com.google.android.material.snackbar.Snackbar
 import com.google.firebase.crashlytics.FirebaseCrashlytics
-import okhttp3.Interceptor
-import okhttp3.OkHttpClient
-import okhttp3.Response
+import kotlinx.coroutines.*
+import kotlinx.coroutines.channels.BufferOverflow
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import okhttp3.*
 import xyz.quaver.io.FileX
+import xyz.quaver.pupil.hitomi.evaluations
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.util.*
-import xyz.quaver.pupil.util.downloader.DownloadManager
-import xyz.quaver.setClient
 import java.io.File
+import java.net.URL
 import java.util.*
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.Executors
 import java.util.concurrent.TimeUnit
 import kotlin.reflect.KClass
 
@@ -68,12 +77,152 @@ var clientHolder: OkHttpClient? = null
 val client: OkHttpClient
     get() = clientHolder ?: clientBuilder.build().also {
         clientHolder = it
-        setClient(it)
     }
 
+@SuppressLint("StaticFieldLeak")
+lateinit var webView: WebView
+val _webViewFlow = MutableSharedFlow<Pair<String, String?>>(
+    extraBufferCapacity = 2,
+    onBufferOverflow = BufferOverflow.DROP_OLDEST
+)
+val webViewFlow = _webViewFlow.asSharedFlow()
+var webViewReady = false
+    private set
+var webViewFailed = false
+    private set
+private var reloadJob: Job? = null
+
+fun reloadWebView() {
+    if (reloadJob?.isActive == true) return
+
+    reloadJob = CoroutineScope(Dispatchers.IO).launch {
+        if (evaluations.isEmpty()) {
+            webViewReady = false
+            webViewFailed = false
+
+            while (evaluations.isNotEmpty()) yield()
+
+            runCatching {
+                URL(
+                    if (isDebugBuild)
+                        "https://tom5079.github.io/Pupil/hitomi-dev.html"
+                    else
+                        "https://tom5079.github.io/Pupil/hitomi.html"
+                ).readText()
+            }.onFailure {
+                webViewFailed = true
+            }.getOrNull()?.let { html ->
+                launch(Dispatchers.Main) {
+                    webView.loadDataWithBaseURL(
+                        "https://hitomi.la/",
+                        html,
+                        "text/html",
+                        null,
+                        null
+                    )
+                }
+            }
+        }
+    }
+}
+
+private var htmlVersion: String = ""
+fun reloadWhenFailedOrUpdate() = CoroutineScope(Dispatchers.Default).launch {
+    while (true) {
+        if (
+            webViewFailed ||
+            runCatching {
+                URL(
+                    if (isDebugBuild)
+                        "https://tom5079.github.io/Pupil/hitomi-dev.html.ver"
+                    else
+                        "https://tom5079.github.io/Pupil/hitomi.html.ver"
+                ).readText()
+            }.getOrNull().let { version ->
+                (!version.isNullOrEmpty() && version != htmlVersion).also {
+                    if (it) htmlVersion = version!!
+                }
+            }
+        ) {
+            reloadWebView()
+        }
+
+        delay(if (webViewReady && !webViewFailed) 10000 else 1000)
+    }
+}
+
+var isDebugBuild: Boolean = false
+private lateinit var userAgent: String
+
 class Pupil : Application() {
 
+    companion object {
+        lateinit var instance: Pupil
+            private set
+    }
+
+    @SuppressLint("SetJavaScriptEnabled")
     override fun onCreate() {
+        instance = this
+        isDebugBuild = applicationInfo.flags and ApplicationInfo.FLAG_DEBUGGABLE != 0
+
+        WebView.setWebContentsDebuggingEnabled(true)
+
+        webView = WebView(this).apply {
+            with (settings) {
+                javaScriptEnabled = true
+                domStorageEnabled = true
+            }
+
+            userAgent = settings.userAgentString
+
+            webViewClient = object: WebViewClient() {
+                override fun onPageFinished(view: WebView?, url: String?) {
+                    webViewReady = true
+                }
+
+                override fun onReceivedError(
+                    view: WebView?,
+                    request: WebResourceRequest?,
+                    error: WebResourceError?
+                ) {
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                        FirebaseCrashlytics.getInstance().log(
+                            "onReceivedError: ${error?.description}"
+                        )
+                    }
+                    webViewFailed = true
+                }
+            }
+
+            webChromeClient = object: WebChromeClient() {
+                override fun onConsoleMessage(consoleMessage: ConsoleMessage?): Boolean {
+                    FirebaseCrashlytics.getInstance().log(
+                        "onConsoleMessage: ${consoleMessage?.message()} (${consoleMessage?.sourceId()}:${consoleMessage?.lineNumber()})"
+                    )
+
+                    return super.onConsoleMessage(consoleMessage)
+                }
+            }
+
+            addJavascriptInterface(object {
+                @JavascriptInterface
+                fun onResult(uid: String, result: String) {
+                    _webViewFlow.tryEmit(uid to result)
+                }
+                @JavascriptInterface
+                fun onError(uid: String, message: String) {
+                    _webViewFlow.tryEmit(uid to null)
+                    Toast.makeText(this@Pupil, message, Toast.LENGTH_LONG).show()
+                    FirebaseCrashlytics.getInstance().recordException(
+                        Exception(message)
+                    )
+                }
+            }, "Callback")
+        }
+
+        reloadWhenFailedOrUpdate()
+
         AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
 
         preferences = PreferenceManager.getDefaultSharedPreferences(this)
@@ -92,10 +241,18 @@ class Pupil : Application() {
             .readTimeout(0, TimeUnit.SECONDS)
             .proxyInfo(proxyInfo)
             .addInterceptor { chain ->
-                val request = chain.request()
+                val request = chain.request().newBuilder()
+                    .header("User-Agent", userAgent)
+                    .build()
+
                 val tag = request.tag() ?: return@addInterceptor chain.proceed(request)
 
                 interceptors[tag::class]?.invoke(chain) ?: chain.proceed(request)
+            }.apply {
+                (Preferences.get<String>("max_concurrent_download").toIntOrNull() ?: 0).let {
+                    if (it != 0)
+                        dispatcher(Dispatcher(Executors.newFixedThreadPool(it)))
+                }
             }
 
         try {
@@ -108,8 +265,6 @@ class Pupil : Application() {
 
                 if (!FileX(this, it).canWrite())
                     throw Exception()
-
-                DownloadManager.getInstance(this).migrate()
             }
         } catch (e: Exception) {
             Preferences.remove("download_folder")
@@ -125,8 +280,13 @@ class Pupil : Application() {
         favoriteTags = SavedSet(File(ContextCompat.getDataDir(this), "favorites_tags.json"), Tag.parse(""))
         searchHistory = SavedSet(File(ContextCompat.getDataDir(this), "search_histories.json"), "")
 
+        favoriteTags.filter { it.tag.contains('_') }.forEach {
+            favoriteTags.remove(it)
+        }
+
+        /*
         if (BuildConfig.DEBUG)
-            FirebaseAnalytics.getInstance(this).setAnalyticsCollectionEnabled(false)
+            FirebaseAnalytics.getInstance(this).setAnalyticsCollectionEnabled(false)*/
 
         try {
             ProviderInstaller.installIfNeeded(this)

app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt

@@ -22,14 +22,10 @@ import android.content.ClipData
 import android.content.ClipboardManager
 import android.content.Context
 import android.graphics.drawable.Drawable
-import android.util.Log
-import android.util.SparseBooleanArray
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.LinearLayout
 import android.widget.Toast
-import androidx.cardview.widget.CardView
 import androidx.core.content.ContextCompat
 import androidx.recyclerview.widget.RecyclerView
 import androidx.vectordrawable.graphics.drawable.Animatable2Compat
@@ -38,15 +34,16 @@ import com.daimajia.swipe.SwipeLayout
 import com.daimajia.swipe.adapters.RecyclerSwipeAdapter
 import com.daimajia.swipe.interfaces.SwipeAdapterInterface
 import com.github.piasy.biv.loader.ImageLoader
-import kotlinx.android.synthetic.main.item_galleryblock.view.*
 import kotlinx.coroutines.*
-import xyz.quaver.hitomi.getGallery
-import xyz.quaver.hitomi.getReader
 import xyz.quaver.io.util.getChild
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.GalleryblockItemBinding
 import xyz.quaver.pupil.favoriteTags
 import xyz.quaver.pupil.favorites
+import xyz.quaver.pupil.hitomi.getGallery
+import xyz.quaver.pupil.hitomi.getGalleryInfo
 import xyz.quaver.pupil.types.Tag
+import xyz.quaver.pupil.ui.view.ProgressCard
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
@@ -55,340 +52,260 @@ import java.io.File
 
 class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapter<RecyclerView.ViewHolder>(), SwipeAdapterInterface {
 
-    enum class ViewType {
-        NEXT,
-        GALLERY,
-        PREV
-    }
-
     var updateAll = true
     var thin: Boolean = Preferences["thin"]
 
-    inner class GalleryViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
+    inner class GalleryViewHolder(val binding: GalleryblockItemBinding) : RecyclerView.ViewHolder(binding.root) {
         private var galleryID: Int = 0
 
         init {
             CoroutineScope(Dispatchers.Main).launch {
                 while (updateAll) {
-                    updateProgress(view.context)
+                    updateProgress(itemView.context)
                     delay(1000)
                 }
             }
         }
 
-        private fun updateProgress(context: Context) {
-            val cache = Cache.getInstance(context, galleryID)
+        private fun updateProgress(context: Context) = CoroutineScope(Dispatchers.Main).launch {
+            with(binding.galleryblockCard) {
+                val imageList = Cache.getInstance(context, galleryID).metadata.imageList
 
-            CoroutineScope(Dispatchers.Main).launch {
-                if (cache.metadata.reader == null) {
-                    view.galleryblock_progressbar_layout.visibility = View.GONE
-                    view.galleryblock_progress_complete.visibility = View.INVISIBLE
-                    return@launch
+                if (imageList == null) {
+                    max = 0
+                    return@with
                 }
 
-                with(view.galleryblock_progressbar) {
-                    val imageList = cache.metadata.imageList!!
+                progress = imageList.count { it != null }
+                max = imageList.size
 
-                    progress = imageList.count { it != null }
-                    max = imageList.size
-
-                    with(view.galleryblock_progressbar_layout) {
-                        if (visibility == View.GONE)
-                            visibility = View.VISIBLE
-                    }
-
-                    view.galleryblock_id.setOnClickListener {
-                        (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
-                            ClipData.newPlainText("gallery_id", galleryID.toString())
-                        )
-                        Toast.makeText(context, R.string.copied_to_clipboard, Toast.LENGTH_SHORT).show()
-                    }
-
-                    if (!imageList.contains(null)) {
-                        val downloadManager = DownloadManager.getInstance(context)
-
-                        if (completeFlag.get(galleryID, false)) {
-                            with(view.galleryblock_progress_complete) {
-                                setImageResource(
-                                    if (downloadManager.getDownloadFolder(galleryID) != null)
-                                        R.drawable.ic_progressbar
-                                    else R.drawable.ic_progressbar_cache
-                                )
-                                visibility = View.VISIBLE
-                            }
-                        } else {
-                            with(view.galleryblock_progress_complete) {
-                                setImageDrawable(AnimatedVectorDrawableCompat.create(context,
-                                    if (downloadManager.getDownloadFolder(galleryID) != null)
-                                        R.drawable.ic_progressbar_complete
-                                    else R.drawable.ic_progressbar_complete_cache
-                                ).apply {
-                                    this?.start()
-                                })
-                                visibility = View.VISIBLE
-                            }
-                            completeFlag.put(galleryID, true)
-                        }
-                    } else
-                        view.galleryblock_progress_complete.visibility = View.INVISIBLE
+                this@GalleryViewHolder.binding.galleryblockId.setOnClickListener {
+                    (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
+                        ClipData.newPlainText("gallery_id", galleryID.toString())
+                    )
+                    Toast.makeText(context, R.string.copied_to_clipboard, Toast.LENGTH_SHORT).show()
                 }
+
+                type = if (!imageList.contains(null)) {
+                    val downloadManager = DownloadManager.getInstance(context)
+
+                    if (downloadManager.getDownloadFolder(galleryID) == null)
+                        ProgressCard.Type.CACHE
+                    else
+                        ProgressCard.Type.DOWNLOAD
+                } else
+                    ProgressCard.Type.LOADING
             }
         }
 
         fun bind(galleryID: Int) {
             this.galleryID = galleryID
-            updateProgress(view.context)
+            updateProgress(itemView.context)
 
-            val cache = Cache.getInstance(view.context, galleryID)
+            val cache = Cache.getInstance(itemView.context, galleryID)
 
             val galleryBlock = runBlocking {
                 cache.getGalleryBlock()
             } ?: return
 
-            with(view) {
-                val resources = context.resources
-                val languages = resources.getStringArray(R.array.languages).map {
-                    it.split("|").let { split ->
-                        Pair(split[0], split[1])
-                    }
-                }.toMap()
-
-                val artists = galleryBlock.artists
-                val series = galleryBlock.series
-
-                galleryblock_thumbnail.apply {
-                    setOnClickListener {
-                        view.performClick()
-                    }
-                    setOnLongClickListener {
-                        view.performLongClick()
-                    }
-                    setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
-                    setImageLoaderCallback(object: ImageLoader.Callback {
-                        override fun onFail(error: Exception?) {
-                            Cache.getInstance(context, galleryID).let { cache ->
-                                cache.cacheFolder.getChild(".thumbnail").let { if (it.exists()) it.delete() }
-                                cache.downloadFolder?.getChild(".thumbnail")?.let { if (it.exists()) it.delete() }
-                            }
-                        }
-
-                        override fun onCacheHit(imageType: Int, image: File?) {}
-                        override fun onCacheMiss(imageType: Int, image: File?) {}
-                        override fun onFinish() {}
-                        override fun onProgress(progress: Int) {}
-                        override fun onStart() {}
-                        override fun onSuccess(image: File?) {}
-                    })
-                    ssiv?.recycle()
-                    CoroutineScope(Dispatchers.IO).launch {
-                        cache.getThumbnail().let { launch(Dispatchers.Main) {
-                            showImage(it)
-                        } }
-                    }
+            val resources = itemView.context.resources
+            val languages = resources.getStringArray(R.array.languages).map {
+                it.split("|").let { split ->
+                    Pair(split[0], split[1])
                 }
+            }.toMap()
 
-                galleryblock_title.text = galleryBlock.title
-                with(galleryblock_artist) {
-                    text = artists.joinToString { it.wordCapitalize() }
-                    visibility = when {
-                        artists.isNotEmpty() -> View.VISIBLE
-                        else -> View.GONE
-                    }
+            val artists = galleryBlock.artists
+            val series = galleryBlock.series
 
-                    CoroutineScope(Dispatchers.IO).launch {
-                        val gallery = runCatching {
-                            getGallery(galleryID)
-                        }.getOrNull()
-
-                        if (gallery?.groups?.isNotEmpty() != true)
-                            return@launch
-
-                        launch(Dispatchers.Main) {
-                            text = context.getString(
-                                R.string.galleryblock_artist_with_group,
-                                artists.joinToString { it.wordCapitalize() },
-                                gallery.groups.joinToString { it.wordCapitalize() }
-                            )
-                        }
-                    }
+            binding.galleryblockThumbnail.apply {
+                setOnClickListener {
+                    itemView.performClick()
                 }
-                with(galleryblock_series) {
-                    text =
-                        resources.getString(
-                            R.string.galleryblock_series,
-                            series.joinToString(", ") { it.wordCapitalize() })
-                    visibility = when {
-                        series.isNotEmpty() -> View.VISIBLE
-                        else -> View.GONE
-                    }
+                setOnLongClickListener {
+                    itemView.performLongClick()
                 }
-                galleryblock_type.text = resources.getString(R.string.galleryblock_type, galleryBlock.type).wordCapitalize()
-                with(galleryblock_language) {
-                    text =
-                        resources.getString(R.string.galleryblock_language, languages[galleryBlock.language])
-                    visibility = when {
-                        galleryBlock.language.isNotEmpty() -> View.VISIBLE
-                        else -> View.GONE
-                    }
-                }
-
-                with(galleryblock_tag_group) {
-                    onClickListener = {
-                        onChipClickedHandler.forEach { callback ->
-                            callback.invoke(it)
+                setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
+                setImageLoaderCallback(object: ImageLoader.Callback {
+                    override fun onFail(error: Exception?) {
+                        Cache.getInstance(context, galleryID).let { cache ->
+                            cache.cacheFolder.getChild(".thumbnail").let { if (it.exists()) it.delete() }
+                            cache.downloadFolder?.getChild(".thumbnail")?.let { if (it.exists()) it.delete() }
                         }
                     }
 
-                    tags.clear()
-
-                    CoroutineScope(Dispatchers.IO).launch {
-                        tags.addAll(
-                            galleryBlock.relatedTags.sortedBy {
-                                val tag = Tag.parse(it)
-
-                                if (favoriteTags.contains(tag))
-                                    -1
-                                else
-                                    when(Tag.parse(it).area) {
-                                        "female" -> 0
-                                        "male" -> 1
-                                        else -> 2
-                                    }
-                            }.map {
-                                Tag.parse(it)
-                            }
-                        )
-
-                        launch(Dispatchers.Main) {
-                            refresh()
-                        }
-                    }
-                }
-
-                galleryblock_id.text = galleryBlock.id.toString()
-                galleryblock_pagecount.text = "-"
+                    override fun onCacheHit(imageType: Int, image: File?) {}
+                    override fun onCacheMiss(imageType: Int, image: File?) {}
+                    override fun onFinish() {}
+                    override fun onProgress(progress: Int) {}
+                    override fun onStart() {}
+                    override fun onSuccess(image: File?) {}
+                })
+                ssiv?.recycle()
                 CoroutineScope(Dispatchers.IO).launch {
-                    val pageCount = kotlin.runCatching {
-                        getReader(galleryBlock.id).galleryInfo.files.size
-                    }.getOrNull() ?: return@launch
-                    withContext(Dispatchers.Main) {
-                        galleryblock_pagecount.text = context.getString(R.string.galleryblock_pagecount, pageCount)
+                    cache.getThumbnail().let { launch(Dispatchers.Main) {
+                        showImage(it)
+                    } }
+                }
+            }
+
+            binding.galleryblockTitle.text = galleryBlock.title
+            with(binding.galleryblockArtist) {
+                text = artists.joinToString { it.wordCapitalize() }
+                visibility = when {
+                    artists.isNotEmpty() -> View.VISIBLE
+                    else -> View.GONE
+                }
+
+                CoroutineScope(Dispatchers.IO).launch {
+                    val gallery = runCatching {
+                        getGallery(galleryID)
+                    }.getOrNull()
+
+                    if (gallery?.groups?.isNotEmpty() != true)
+                        return@launch
+
+                    launch(Dispatchers.Main) {
+                        text = context.getString(
+                            R.string.galleryblock_artist_with_group,
+                            artists.joinToString { it.wordCapitalize() },
+                            gallery.groups.joinToString { it.wordCapitalize() }
+                        )
+                    }
+                }
+            }
+            with(binding.galleryblockSeries) {
+                text =
+                    resources.getString(
+                        R.string.galleryblock_series,
+                        series.joinToString(", ") { it.wordCapitalize() })
+                visibility = when {
+                    series.isNotEmpty() -> View.VISIBLE
+                    else -> View.GONE
+                }
+            }
+            binding.galleryblockType.text = resources.getString(R.string.galleryblock_type, galleryBlock.type).wordCapitalize()
+            with(binding.galleryblockLanguage) {
+                text =
+                    resources.getString(R.string.galleryblock_language, languages[galleryBlock.language])
+                visibility = when {
+                    galleryBlock.language.isNotEmpty() -> View.VISIBLE
+                    else -> View.GONE
+                }
+            }
+
+            with(binding.galleryblockTagGroup) {
+                onClickListener = {
+                    onChipClickedHandler.forEach { callback ->
+                        callback.invoke(it)
                     }
                 }
 
-                with(galleryblock_favorite) {
-                    setImageResource(if (favorites.contains(galleryBlock.id)) R.drawable.ic_star_filled else R.drawable.ic_star_empty)
-                    setOnClickListener {
-                        when {
-                            favorites.contains(galleryBlock.id) -> {
-                                favorites.remove(galleryBlock.id)
+                tags.clear()
 
-                                setImageResource(R.drawable.ic_star_empty)
-                            }
-                            else -> {
-                                favorites.add(galleryBlock.id)
+                CoroutineScope(Dispatchers.IO).launch {
+                    tags.addAll(
+                        galleryBlock.relatedTags.sortedBy {
+                            val tag = Tag.parse(it)
 
-                                setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.avd_star).apply {
-                                    this ?: return@apply
+                            if (favoriteTags.contains(tag))
+                                -1
+                            else
+                                when(Tag.parse(it).area) {
+                                    "female" -> 0
+                                    "male" -> 1
+                                    else -> 2
+                                }
+                        }.map {
+                            Tag.parse(it)
+                        }
+                    )
 
-                                    registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
-                                        override fun onAnimationEnd(drawable: Drawable?) {
-                                            setImageResource(R.drawable.ic_star_filled)
-                                        }
-                                    })
-                                    start()
+                    launch(Dispatchers.Main) {
+                        refresh()
+                    }
+                }
+            }
+
+            binding.galleryblockId.text = galleryBlock.id.toString()
+            binding.galleryblockPagecount.text = "-"
+            CoroutineScope(Dispatchers.IO).launch {
+                val pageCount = kotlin.runCatching {
+                    getGalleryInfo(galleryBlock.id).files.size
+                }.getOrNull() ?: return@launch
+                withContext(Dispatchers.Main) {
+                    binding.galleryblockPagecount.text = itemView.context.getString(R.string.galleryblock_pagecount, pageCount)
+                }
+            }
+
+            with(binding.galleryblockFavorite) {
+                setImageResource(if (favorites.contains(galleryBlock.id)) R.drawable.ic_star_filled else R.drawable.ic_star_empty)
+                setOnClickListener {
+                    when {
+                        favorites.contains(galleryBlock.id) -> {
+                            favorites.remove(galleryBlock.id)
+
+                            setImageResource(R.drawable.ic_star_empty)
+                        }
+                        else -> {
+                            favorites.add(galleryBlock.id)
+
+                            setImageDrawable(AnimatedVectorDrawableCompat.create(context, R.drawable.avd_star).apply {
+                                this ?: return@apply
+
+                                registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
+                                    override fun onAnimationEnd(drawable: Drawable?) {
+                                        setImageResource(R.drawable.ic_star_filled)
+                                    }
                                 })
-                            }
+                                start()
+                            })
                         }
                     }
                 }
+            }
 
 
-                // Make some views invisible to make it thinner
-                if (thin) {
-                    galleryblock_tag_group.visibility = View.GONE
-                }
+            // Make some views invisible to make it thinner
+            if (thin) {
+                binding.galleryblockTagGroup.visibility = View.GONE
             }
         }
     }
-    class NextViewHolder(view: LinearLayout) : RecyclerView.ViewHolder(view)
-    class PrevViewHolder(view: LinearLayout) : RecyclerView.ViewHolder(view)
-
-    class ViewHolderFactory {
-        companion object {
-            fun getLayoutID(type: Int): Int {
-                return when(ViewType.values()[type]) {
-                    ViewType.NEXT -> R.layout.item_next
-                    ViewType.PREV -> R.layout.item_prev
-                    ViewType.GALLERY -> R.layout.item_galleryblock
-                }
-            }
-        }
-    }
-
-    val completeFlag = SparseBooleanArray()
 
     val onChipClickedHandler = ArrayList<((Tag) -> Unit)>()
     var onDownloadClickedHandler: ((Int) -> Unit)? = null
     var onDeleteClickedHandler: ((Int) -> Unit)? = null
 
-    var showNext = false
-    var showPrev = false
-
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
-
-        fun getViewHolder(type: Int, view: View): RecyclerView.ViewHolder {
-            return when(ViewType.values()[type]) {
-                ViewType.NEXT -> NextViewHolder(view as LinearLayout)
-                ViewType.PREV -> PrevViewHolder(view as LinearLayout)
-                ViewType.GALLERY -> GalleryViewHolder(view as CardView)
-            }
-        }
-
-        return getViewHolder(
-            viewType,
-            LayoutInflater.from(parent.context).inflate(
-                ViewHolderFactory.getLayoutID(viewType),
-                parent,
-                false
-            )
-        )
+        return GalleryViewHolder(GalleryblockItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
     }
 
     override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
         if (holder is GalleryViewHolder) {
-            val galleryID = galleries[position-(if (showPrev) 1 else 0)]
+            val galleryID = galleries[position]
 
             holder.bind(galleryID)
 
-            with(holder.view.galleryblock_primary) {
-                setOnClickListener {
-                    holder.view.performClick()
-                }
-                setOnLongClickListener {
-                    holder.view.performLongClick()
-                }
-            }
-
-            holder.view.galleryblock_download.setOnClickListener {
+            holder.binding.galleryblockCard.binding.download.setOnClickListener {
                 onDownloadClickedHandler?.invoke(position)
             }
 
-            holder.view.galleryblock_delete.setOnClickListener {
+            holder.binding.galleryblockCard.binding.delete.setOnClickListener {
                 onDeleteClickedHandler?.invoke(position)
             }
 
-            mItemManger.bindView(holder.view, position)
+            mItemManger.bindView(holder.binding.root, position)
 
-            holder.view.galleryblock_swipe_layout.addSwipeListener(object: SwipeLayout.SwipeListener {
+            holder.binding.galleryblockCard.binding.swipeLayout.addSwipeListener(object: SwipeLayout.SwipeListener {
                 override fun onStartOpen(layout: SwipeLayout?) {
                     mItemManger.closeAllExcept(layout)
 
-                    holder.view.galleryblock_download.text =
-                        if (DownloadManager.getInstance(holder.view.context).isDownloading(galleryID))
-                            holder.view.context.getString(android.R.string.cancel)
+                    holder.binding.galleryblockCard.binding.download.text =
+                        if (DownloadManager.getInstance(holder.binding.root.context).isDownloading(galleryID))
+                            holder.binding.root.context.getString(android.R.string.cancel)
                         else
-                            holder.view.context.getString(R.string.main_download)
+                            holder.binding.root.context.getString(R.string.main_download)
                 }
 
                 override fun onClose(layout: SwipeLayout?) {}
@@ -400,18 +317,7 @@ class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapt
         }
     }
 
-    override fun getItemCount() =
-        galleries.size +
-        (if (showNext) 1 else 0) +
-        (if (showPrev) 1 else 0)
+    override fun getItemCount() = galleries.size
 
-    override fun getItemViewType(position: Int): Int {
-        return when {
-            showPrev && position == 0 -> ViewType.PREV
-            showNext && position == galleries.size+(if (showPrev) 1 else 0) -> ViewType.NEXT
-            else -> ViewType.GALLERY
-        }.ordinal
-    }
-
-    override fun getSwipeLayoutResourceId(position: Int) = R.id.galleryblock_swipe_layout
+    override fun getSwipeLayoutResourceId(position: Int) = R.id.swipe_layout
 }

app/src/main/java/xyz/quaver/pupil/adapters/MirrorAdapter.kt

@@ -1,86 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.adapters
-
-import android.annotation.SuppressLint
-import android.content.Context
-import android.view.LayoutInflater
-import android.view.MotionEvent
-import android.view.View
-import android.view.ViewGroup
-import androidx.recyclerview.widget.RecyclerView
-import kotlinx.android.synthetic.main.item_mirrors.view.*
-import xyz.quaver.pupil.R
-import xyz.quaver.pupil.util.Preferences
-import java.util.*
-
-class MirrorAdapter(context: Context) : RecyclerView.Adapter<MirrorAdapter.ViewHolder>() {
-
-    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view)
-
-    val mirrors = context.resources.getStringArray(R.array.mirrors).map {
-        it.split('|').let { split ->
-            Pair(split.first(), split.last())
-        }
-    }.toMap()
-
-    val list = mirrors.keys.toMutableList().apply {
-        Preferences.get<String>("mirrors")
-            .split(">")
-            .reversed()
-            .forEach {
-                if (this.contains(it)) {
-                    this.remove(it)
-                    this.add(0, it)
-                }
-            }
-    }
-
-    val onItemMove : ((Int, Int) -> Unit) = { from, to ->
-        Collections.swap(list, from, to)
-        notifyItemMoved(from, to)
-        onItemMoved?.invoke(list)
-    }
-    var onStartDrag : ((ViewHolder) -> Unit)? = null
-    var onItemMoved : ((List<String>) -> (Unit))? = null
-
-    @SuppressLint("ClickableViewAccessibility")
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        with(holder.view) {
-            mirror_name.text = mirrors[list.elementAt(position)]
-            mirror_button.setOnTouchListener { _, event ->
-                if (event.action == MotionEvent.ACTION_DOWN)
-                    onStartDrag?.invoke(holder)
-
-                true
-            }
-        }
-    }
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        return LayoutInflater.from(parent.context).inflate(
-            R.layout.item_mirrors, parent, false
-        ).let {
-            ViewHolder(it)
-        }
-    }
-
-    override fun getItemCount() = mirrors.size
-
-}

app/src/main/java/xyz/quaver/pupil/adapters/ReaderAdapter.kt

@@ -39,10 +39,10 @@ import com.facebook.imagepipeline.image.ImageInfo
 import com.github.piasy.biv.view.BigImageView
 import com.github.piasy.biv.view.ImageShownCallback
 import com.github.piasy.biv.view.ImageViewFactory
-import kotlinx.android.synthetic.main.item_reader.view.*
 import kotlinx.coroutines.*
-import xyz.quaver.hitomi.Reader
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.ReaderItemBinding
+import xyz.quaver.pupil.hitomi.GalleryInfo
 import xyz.quaver.pupil.ui.ReaderActivity
 import xyz.quaver.pupil.util.downloader.Cache
 import java.io.File
@@ -52,16 +52,93 @@ class ReaderAdapter(
     private val activity: ReaderActivity,
     private val galleryID: Int
 ) : RecyclerView.Adapter<ReaderAdapter.ViewHolder>() {
-
-    var reader: Reader? = null
+    var galleryInfo: GalleryInfo? = null
 
     var isFullScreen = false
 
     var onItemClickListener : (() -> (Unit))? = null
 
-    class ViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
+    inner class ViewHolder(private val binding: ReaderItemBinding) : RecyclerView.ViewHolder(binding.root) {
+        init {
+            with (binding.image) {
+                setImageViewFactory(FrescoImageViewFactory().apply {
+                    updateView = { imageInfo ->
+                        binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                            dimensionRatio = "${imageInfo.width}:${imageInfo.height}"
+                        }
+                    }
+                })
+                setImageShownCallback(object : ImageShownCallback {
+                    override fun onMainImageShown() {
+                        binding.image.mainView.let { v ->
+                            when (v) {
+                                is SubsamplingScaleImageView ->
+                                    if (!isFullScreen) binding.image.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT
+                            }
+                        }
+                    }
+
+                    override fun onThumbnailShown() {}
+                })
+
+                setFailureImage(ContextCompat.getDrawable(itemView.context, R.drawable.image_broken_variant))
+                setOnClickListener {
+                    onItemClickListener?.invoke()
+                }
+            }
+
+            binding.root.setOnClickListener {
+                onItemClickListener?.invoke()
+            }
+        }
+
+        fun bind(position: Int) {
+            if (cache == null)
+                cache = Cache.getInstance(itemView.context, galleryID)
+
+            if (!isFullScreen) {
+                binding.root.setBackgroundResource(R.drawable.reader_item_boundary)
+                binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                    height = 0
+                    dimensionRatio =
+                        "${galleryInfo!!.files[position].width}:${galleryInfo!!.files[position].height}"
+                }
+            } else {
+                binding.root.layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT
+                binding.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                    height = ConstraintLayout.LayoutParams.MATCH_PARENT
+                    dimensionRatio = null
+                }
+                binding.root.background = null
+            }
+
+            binding.readerIndex.text = (position+1).toString()
+
+            val image = cache!!.getImage(position)
+            val progress = activity.downloader?.progress?.get(galleryID)?.get(position)
+
+            if (progress?.isInfinite() == true && image != null) {
+                binding.progressGroup.visibility = View.INVISIBLE
+                binding.image.showImage(image.uri)
+            } else {
+                binding.progressGroup.visibility = View.VISIBLE
+                binding.readerItemProgressbar.progress =
+                    if (progress?.isInfinite() == true)
+                        100
+                    else
+                        progress?.roundToInt() ?: 0
+
+                clear()
+
+                CoroutineScope(Dispatchers.Main).launch {
+                    delay(1000)
+                    notifyItemChanged(position)
+                }
+            }
+        }
+
         fun clear() {
-            view.image.mainView.let {
+            binding.image.mainView.let {
                 when (it) {
                     is SubsamplingScaleImageView ->
                         it.recycle()
@@ -73,91 +150,15 @@ class ReaderAdapter(
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        return LayoutInflater.from(parent.context).inflate(
-            R.layout.item_reader, parent, false
-        ).let {
-            with(it) {
-                image.setImageViewFactory(FrescoImageViewFactory().apply {
-                    updateView = { imageInfo ->
-                        it.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
-                            dimensionRatio = "${imageInfo.width}:${imageInfo.height}"
-                        }
-                    }
-                })
-                image.setImageShownCallback(object : ImageShownCallback {
-                    override fun onMainImageShown() {
-                        it.image.mainView.let { v ->
-                            when (v) {
-                                is SubsamplingScaleImageView ->
-                                    if (!isFullScreen) it.image.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT
-                            }
-                        }
-                    }
-
-                    override fun onThumbnailShown() {}
-                })
-                image.setFailureImage(ContextCompat.getDrawable(context, R.drawable.image_broken_variant))
-                image.setOnClickListener {
-                    this.performClick()
-                }
-                setOnClickListener {
-                    onItemClickListener?.invoke()
-                }
-            }
-
-            ViewHolder(it)
-        }
+        return ViewHolder(ReaderItemBinding.inflate(LayoutInflater.from(parent.context), parent, false))
     }
 
     private var cache: Cache? = null
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        holder.view as ConstraintLayout
-
-        if (cache == null)
-            cache = Cache.getInstance(holder.view.context, galleryID)
-
-        if (!isFullScreen) {
-            holder.view.setBackgroundResource(R.drawable.reader_item_boundary)
-            holder.view.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
-                height = 0
-                dimensionRatio =
-                    "${reader!!.galleryInfo.files[position].width}:${reader!!.galleryInfo.files[position].height}"
-            }
-        } else {
-            holder.view.layoutParams.height = ViewGroup.LayoutParams.MATCH_PARENT
-            holder.view.image.updateLayoutParams<ConstraintLayout.LayoutParams> {
-                height = ConstraintLayout.LayoutParams.MATCH_PARENT
-                dimensionRatio = null
-            }
-            holder.view.background = null
-        }
-
-        holder.view.reader_index.text = (position+1).toString()
-
-        val image = cache!!.getImage(position)
-        val progress = activity.downloader?.progress?.get(galleryID)?.get(position)
-
-        if (progress?.isInfinite() == true && image != null) {
-            holder.view.progress_group.visibility = View.INVISIBLE
-            holder.view.image.showImage(image.uri)
-        } else {
-            holder.view.progress_group.visibility = View.VISIBLE
-            holder.view.reader_item_progressbar.progress =
-                if (progress?.isInfinite() == true)
-                    100
-                else
-                    progress?.roundToInt() ?: 0
-
-            holder.clear()
-
-            CoroutineScope(Dispatchers.Main).launch {
-                delay(1000)
-                notifyItemChanged(position)
-            }
-        }
+        holder.bind(position)
     }
 
-    override fun getItemCount() = reader?.galleryInfo?.files?.size ?: 0
+    override fun getItemCount() = galleryInfo?.files?.size ?: 0
 
     override fun onViewRecycled(holder: ViewHolder) {
         holder.clear()

app/src/main/java/xyz/quaver/pupil/hitomi/Utils.kt

@@ -0,0 +1,56 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver
+
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.modules.SerializersModule
+import kotlinx.serialization.modules.plus
+import kotlinx.serialization.modules.polymorphic
+import kotlinx.serialization.modules.subclass
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import xyz.quaver.pupil.client
+import java.io.IOException
+import java.net.URL
+import java.util.concurrent.TimeUnit
+import kotlin.time.Duration
+
+/**
+ * kotlinx.serialization.json.Json object for global use  
+ * properties should not be changed
+ *
+ * @see [https://kotlin.github.io/kotlinx.serialization/kotlinx-serialization-core/kotlinx-serialization-core/kotlinx.serialization.json/-json/index.html]
+ */
+val json = Json {
+    isLenient = true
+    ignoreUnknownKeys = true
+    allowSpecialFloatingPointValues = true
+    useArrayPolymorphism = true
+}
+
+typealias HeaderSetter = (Request.Builder) -> Request.Builder
+fun URL.readText(settings: HeaderSetter? = null): String {
+    val request = Request.Builder()
+        .url(this).let { 
+            settings?.invoke(it) ?: it
+        }.build()
+    
+    return client.newCall(request).execute().also{ if (it.code() != 200) throw IOException() }.body()?.use { it.string() } ?: throw IOException()
+}

app/src/main/java/xyz/quaver/pupil/hitomi/common.kt

@@ -0,0 +1,134 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.pupil.hitomi
+
+import android.webkit.WebView
+import android.widget.Toast
+import com.google.common.collect.ConcurrentHashMultiset
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.transformWhile
+import kotlinx.coroutines.withContext
+import kotlinx.coroutines.yield
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import xyz.quaver.json
+import xyz.quaver.pupil.*
+import java.util.*
+import java.util.concurrent.ConcurrentHashMap
+import kotlin.coroutines.resume
+import kotlin.coroutines.suspendCoroutine
+
+const val protocol = "https:"
+
+val evaluations = Collections.newSetFromMap<String>(ConcurrentHashMap())
+
+suspend fun WebView.evaluate(script: String): String = withContext(Dispatchers.Main) {
+    while (webViewFailed || !webViewReady) yield()
+
+    val uid = UUID.randomUUID().toString()
+
+    evaluations.add(uid)
+
+    val result: String = suspendCoroutine { continuation ->
+        evaluateJavascript(script) {
+            evaluations.remove(uid)
+            continuation.resume(it)
+        }
+    }
+
+    result
+}
+
+@OptIn(ExperimentalCoroutinesApi::class)
+suspend fun WebView.evaluatePromise(script: String, then: String = ".then(result => Callback.onResult(%uid, JSON.stringify(result))).catch(err => Callback.onError(%uid, JSON.stringify(error)))"): String? = withContext(Dispatchers.Main) {
+    while (webViewFailed || !webViewReady) yield()
+
+    val uid = UUID.randomUUID().toString()
+
+    evaluations.add(uid)
+
+    evaluateJavascript((script+then).replace("%uid", "'$uid'"), null)
+
+    val flow: Flow<Pair<String, String?>> = webViewFlow.transformWhile { (currentUid, result) ->
+        if (currentUid == uid) {
+            evaluations.remove(uid)
+            emit(currentUid to result)
+        }
+        currentUid != uid
+    }
+
+    flow.first().second
+}
+
+@Suppress("EXPERIMENTAL_API_USAGE")
+suspend fun getGalleryInfo(galleryID: Int): GalleryInfo {
+    val result = webView.evaluatePromise("get_gallery_info($galleryID)")
+
+    return json.decodeFromString(result!!)
+}
+
+//common.js
+const val domain = "ltn.hitomi.la"
+const val galleryblockdir = "galleryblock"
+const val nozomiextension = ".nozomi"
+
+val String?.js: String
+    get() = if (this == null) "null" else "'$this'"
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun urlFromUrlFromHash(galleryID: Int, image: GalleryFiles, dir: String? = null, ext: String? = null, base: String? = null): String {
+    val result = webView.evaluate(
+        """
+        url_from_url_from_hash(
+            ${galleryID.toString().js},
+            ${Json.encodeToString(image)},
+            ${dir.js}, ${ext.js}, ${base.js}
+        )
+        """.trimIndent()
+    )
+
+
+    FirebaseCrashlytics.getInstance().log(
+        """
+        url_from_url_from_hash(
+            ${galleryID.toString().js},
+            ${Json.encodeToString(image)},
+            ${dir.js}, ${ext.js}, ${base.js}
+        )
+        """.trimIndent()
+    )
+    return Json.decodeFromString(result)
+}
+
+suspend fun imageUrlFromImage(galleryID: Int, image: GalleryFiles, noWebp: Boolean) : String {
+    return when {
+        noWebp ->
+            urlFromUrlFromHash(galleryID, image)
+//        image.hasavif != 0 ->
+//            urlFromUrlFromHash(galleryID, image, "avif", null, "a")
+        image.haswebp != 0 ->
+            urlFromUrlFromHash(galleryID, image, "webp", null, "a")
+        else ->
+            urlFromUrlFromHash(galleryID, image)
+    }
+}

app/src/main/java/xyz/quaver/pupil/hitomi/galleries.kt

@@ -0,0 +1,80 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.pupil.hitomi
+
+import kotlinx.serialization.Serializable
+import org.jsoup.Jsoup
+import xyz.quaver.readText
+import java.net.URL
+import java.net.URLDecoder
+
+@Serializable
+data class Gallery(
+    val related: List<Int>,
+    val langList: List<Pair<String, String>>,
+    val cover: String,
+    val title: String,
+    val artists: List<String>,
+    val groups: List<String>,
+    val type: String,
+    val language: String,
+    val series: List<String>,
+    val characters: List<String>,
+    val tags: List<String>,
+    val thumbnails: List<String>
+)
+suspend fun getGallery(galleryID: Int) : Gallery {
+    val url = Jsoup.parse(URL("https://hitomi.la/galleries/$galleryID.html").readText())
+        .select("link").attr("href")
+
+    val doc = Jsoup.parse(URL(url).readText())
+
+    val related = Regex("\\d+")
+        .findAll(doc.select("script").first()!!.html())
+        .map {
+            it.value.toInt()
+        }.toList()
+
+    val langList = doc.select("#lang-list a").map {
+            Pair(it.text(), "$protocol//hitomi.la${it.attr("href")}")
+        }
+
+    val cover = protocol + doc.selectFirst(".cover img")!!.attr("src")
+    val title = doc.selectFirst(".gallery h1 a")!!.text()
+    val artists = doc.select(".gallery h2 a").map { it.text() }
+    val groups = doc.select(".gallery-info a[href~=^/group/]").map { it.text() }
+    val type = doc.selectFirst(".gallery-info a[href~=^/type/]")!!.text()
+
+    val language = run {
+        val href = doc.select(".gallery-info a[href~=^/index.+\\.html\$]").attr("href")
+        Regex("""index-([^-]+)(-.+)?\.html""").find(href)?.groupValues?.getOrNull(1) ?: ""
+    }
+
+    val series = doc.select(".gallery-info a[href~=^/series/]").map { it.text() }
+    val characters = doc.select(".gallery-info a[href~=^/character/]").map { it.text() }
+
+    val tags = doc.select(".gallery-info a[href~=^/tag/]").map {
+        val href = URLDecoder.decode(it.attr("href"), "UTF-8")
+        href.slice(5 until href.indexOf('-'))
+    }
+
+    val thumbnails = getGalleryInfo(galleryID).files.map { galleryInfo ->
+        urlFromUrlFromHash(galleryID, galleryInfo, "smalltn", "jpg", "tn")
+    }
+
+    return Gallery(related, langList, cover, title, artists, groups, type, language, series, characters, tags, thumbnails)
+}

app/src/main/java/xyz/quaver/pupil/hitomi/galleryblock.kt

@@ -0,0 +1,79 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.pupil.hitomi
+
+import kotlinx.serialization.Serializable
+import org.jsoup.Jsoup
+import xyz.quaver.pupil.webView
+import xyz.quaver.readText
+import java.net.URL
+import java.net.URLDecoder
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+import java.util.*
+import javax.net.ssl.HttpsURLConnection
+
+@Serializable
+data class GalleryBlock(
+    val id: Int,
+    val galleryUrl: String,
+    val thumbnails: List<String>,
+    val title: String,
+    val artists: List<String>,
+    val series: List<String>,
+    val type: String,
+    val language: String,
+    val relatedTags: List<String>
+)
+
+suspend fun getGalleryBlock(galleryID: Int) : GalleryBlock {
+    val url = "$protocol//$domain/$galleryblockdir/$galleryID$extension"
+
+    val html: String = webView.evaluatePromise(
+        """
+        $.get('$url').always(function(data, status) {
+            if (status === 'success') {
+                Callback.onResult(%uid, data);
+            }
+        }); 
+        """.trimIndent(),
+        then = ""
+    )!!
+
+    val doc = Jsoup.parse(html)
+
+    val galleryUrl = doc.selectFirst("h1 > a")!!.attr("href")
+
+    val thumbnails = doc.select(".dj-img-cont img").map { protocol + it.attr("src") }
+
+    val title = doc.selectFirst("h1 > a")!!.text()
+    val artists = doc.select(".artist-list a").map{ it.text() }
+    val series = doc.select(".dj-content a[href~=^/series/]").map { it.text() }
+    val type = doc.selectFirst("a[href~=^/type/]")!!.text()
+
+    val language = run {
+        val href = doc.select("a[href~=^/index.+\\.html\$]").attr("href")
+        Regex("""index-([^-]+)(-.+)?\.html""").find(href)?.groupValues?.getOrNull(1) ?: ""
+    }
+
+    val relatedTags = doc.select(".relatedtags a").map {
+        val href = URLDecoder.decode(it.attr("href"), "UTF-8")
+        href.slice(5 until href.indexOf("-all"))
+    }
+
+    return GalleryBlock(galleryID, galleryUrl, thumbnails, title, artists, series, type, language, relatedTags)
+}

app/src/main/java/xyz/quaver/pupil/hitomi/reader.kt

@@ -0,0 +1,49 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.pupil.hitomi
+
+import kotlinx.serialization.Serializable
+
+fun getReferer(galleryID: Int) = "https://hitomi.la/reader/$galleryID.html"
+
+@Serializable
+data class GalleryInfo(
+    val language_localname: String? = null,
+    val language: String? = null,
+    val date: String? = null,
+    val files: List<GalleryFiles>,
+    val id: Int? = null,
+    val type: String? = null,
+    val title: String? = null
+)
+
+@Serializable
+data class GalleryFiles(
+    val width: Int,
+    val hash: String,
+    val haswebp: Int = 0,
+    val name: String,
+    val height: Int,
+    val hasavif: Int = 0,
+    val hasavifsmalltn: Int? = 0
+)
+
+//Set header `Referer` to reader url to avoid 403 error
+@Deprecated("", replaceWith = ReplaceWith("getGalleryInfo"))
+suspend fun getReader(galleryID: Int) : GalleryInfo {
+   return getGalleryInfo(galleryID)
+}

app/src/main/java/xyz/quaver/pupil/hitomi/results.kt

@@ -0,0 +1,86 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.pupil.hitomi
+
+import kotlinx.coroutines.*
+import java.util.*
+
+suspend fun doSearch(query: String, sortByPopularity: Boolean = false) : Set<Int> = coroutineScope {
+    val terms = query
+        .trim()
+        .replace(Regex("""^\?"""), "")
+        .lowercase()
+        .split(Regex("\\s+"))
+        .map {
+            it.replace('_', ' ')
+        }
+
+    val positiveTerms = LinkedList<String>()
+    val negativeTerms = LinkedList<String>()
+
+    for (term in terms) {
+        if (term.matches(Regex("^-.+")))
+            negativeTerms.push(term.replace(Regex("^-"), ""))
+        else if (term.isNotBlank())
+            positiveTerms.push(term)
+    }
+
+    val positiveResults = positiveTerms.map {
+        async {
+            runCatching {
+                getGalleryIDsForQuery(it)
+            }.getOrElse { emptySet() }
+        }
+    }
+
+    val negativeResults = negativeTerms.map {
+        async {
+            runCatching {
+                getGalleryIDsForQuery(it)
+            }.getOrElse { emptySet() }
+        }
+    }
+
+    var results = when {
+        sortByPopularity -> getGalleryIDsFromNozomi(null, "popular", "all")
+        positiveTerms.isEmpty() -> getGalleryIDsFromNozomi(null, "index", "all")
+        else -> emptySet()
+    }
+
+    fun filterPositive(newResults: Set<Int>) {
+        results = when {
+            results.isEmpty() -> newResults
+            else -> results intersect newResults
+        }
+    }
+
+    fun filterNegative(newResults: Set<Int>) {
+        results = results subtract newResults
+    }
+
+    //positive results
+    positiveResults.forEach {
+        filterPositive(it.await())
+    }
+
+    //negative results
+    negativeResults.forEach {
+        filterNegative(it.await())
+    }
+
+    results
+}

app/src/main/java/xyz/quaver/pupil/hitomi/search.kt

@@ -0,0 +1,50 @@
+/*
+ *    Copyright 2019 tom5079
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package xyz.quaver.pupil.hitomi
+
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
+import xyz.quaver.pupil.webView
+
+//searchlib.js
+const val extension = ".html"
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun getGalleryIDsForQuery(query: String) : Set<Int> {
+    val result = webView.evaluatePromise("get_galleryids_for_query('$query')") ?: return emptySet()
+
+    return Json.decodeFromString(result)
+}
+
+@Serializable
+data class Suggestion(val s: String, val t: Int, val u: String, val n: String)
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun getSuggestionsForQuery(query: String) : List<Suggestion> {
+    val result = webView.evaluatePromise("get_suggestions_for_query('$query')") ?: return emptyList()
+
+    return Json.decodeFromString<List<List<Suggestion>?>>(result)[0] ?: return emptyList()
+}
+
+@OptIn(ExperimentalSerializationApi::class)
+suspend fun getGalleryIDsFromNozomi(area: String?, tag: String, language: String) : Set<Int> {
+    val jsArea = if (area == null) "null" else "'$area'"
+
+    return Json.decodeFromString(webView.evaluatePromise("""get_galleryids_from_nozomi($jsArea, '$tag', '$language')""") ?: return emptySet())
+}

app/src/main/java/xyz/quaver/pupil/receiver/UpdateBroadcastReceiver.kt

@@ -54,7 +54,7 @@ class UpdateBroadcastReceiver : BroadcastReceiver() {
 
                 val uri = downloadManager.query(query).use { cursor ->
                     if (cursor.moveToFirst()) {
-                        cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI)).let {
+                        cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI))?.let {
                             val uri = Uri.parse(it)
 
                             when (uri.scheme) {

app/src/main/java/xyz/quaver/pupil/services/DownloadService.kt

@@ -23,10 +23,13 @@ import android.app.PendingIntent
 import android.app.Service
 import android.content.Context
 import android.content.Intent
+import android.util.Log
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.TaskStackBuilder
 import androidx.core.content.ContextCompat
+import com.google.common.util.concurrent.RateLimiter
+import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -38,14 +41,10 @@ import okhttp3.ResponseBody
 import okio.*
 import xyz.quaver.pupil.*
 import xyz.quaver.pupil.ui.ReaderActivity
-import xyz.quaver.pupil.util.cleanCache
+import xyz.quaver.pupil.util.*
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
-import xyz.quaver.pupil.util.ellipsize
-import xyz.quaver.pupil.util.normalizeID
-import xyz.quaver.pupil.util.requestBuilders
 import java.io.IOException
-import java.util.*
 import java.util.concurrent.ConcurrentHashMap
 import kotlin.math.ceil
 import kotlin.math.log10
@@ -166,14 +165,24 @@ class DownloadService : Service() {
         }
     }
 
+    private val rateLimiter = RateLimiter.create(2.0)
+    private val rateLimitHost = Regex("..?\\.hitomi.la")
+
     private val interceptor: PupilInterceptor = { chain ->
         val request = chain.request()
-        var response = chain.proceed(request)
 
-        var retry = 5
-        while (!response.isSuccessful && retry > 0) {
+        if (rateLimitHost.matches(request.url().host()))
+            rateLimiter.acquire()
+
+        var response = chain.proceed(request)
+        var limit = 5
+
+        if (!response.isSuccessful && limit > 0) {
+            Thread.sleep(10000)
+            if (rateLimitHost.matches(request.url().host()))
+                rateLimiter.acquire()
             response = chain.proceed(request)
-            retry--
+            limit -= 1
         }
 
         response.newBuilder()
@@ -203,12 +212,10 @@ class DownloadService : Service() {
     private val callback = object: Callback {
 
         override fun onFailure(call: Call, e: IOException) {
+            FirebaseCrashlytics.getInstance().recordException(e)
+
             if (e.message?.contains("cancel", true) == false) {
                 val galleryID = (call.request().tag() as Tag).galleryID
-
-                // Retry
-                cancel(galleryID)
-                download(galleryID)
             }
         }
 
@@ -217,7 +224,7 @@ class DownloadService : Service() {
             val ext = call.request().url().encodedPath().split('.').last()
 
             kotlin.runCatching {
-                val image = response.also { if (it.code() != 200) throw IOException() }.body()?.use { it.bytes() } ?: throw Exception()
+                val image = response.also { if (it.code() != 200) throw IOException("$galleryID $index ${response.request().url()} CODE ${it.code()}") }.body()?.use { it.bytes() } ?: throw Exception("Response null")
                 val padding = ceil(progress[galleryID]?.size?.let { log10(it.toFloat()) } ?: 0F).toInt()
 
                 CoroutineScope(Dispatchers.IO).launch {
@@ -235,10 +242,11 @@ class DownloadService : Service() {
                             startId?.let { stopSelf(it) }
                         }
                     }.onFailure {
-                        cancel(galleryID)
-                        download(galleryID)
+                        FirebaseCrashlytics.getInstance().recordException(it)
                     }
                 }
+            }.onFailure {
+                FirebaseCrashlytics.getInstance().recordException(it)
             }
         }
     }
@@ -303,10 +311,10 @@ class DownloadService : Service() {
 
         initNotification(galleryID)
 
-        val reader = cache.getReader()
+        val galleryInfo = cache.getGalleryInfo()
 
         // Gallery doesn't exist
-        if (reader == null) {
+        if (galleryInfo == null) {
             delete(galleryID)
             progress[galleryID] = mutableListOf()
             return@launch
@@ -314,7 +322,7 @@ class DownloadService : Service() {
 
         histories.add(galleryID)
 
-        progress[galleryID] = MutableList(reader.galleryInfo.files.size) { 0F }
+        progress[galleryID] = MutableList(galleryInfo.files.size) { 0F }
 
         cache.metadata.imageList?.let {
             it.forEachIndexed { index, image ->
@@ -332,7 +340,7 @@ class DownloadService : Service() {
             return@launch
         }
 
-        notification[galleryID]?.setContentTitle(reader.galleryInfo.title?.ellipsize(30))
+        notification[galleryID]?.setContentTitle(galleryInfo.title?.ellipsize(30))
         notify(galleryID)
 
         val queued = mutableSetOf<Int>()
@@ -346,7 +354,7 @@ class DownloadService : Service() {
             }
         }
 
-        reader.requestBuilders.forEachIndexed { index, it ->
+        galleryInfo.getRequestBuilders().forEachIndexed { index, it ->
             if (progress[galleryID]?.get(index)?.isInfinite() == false) {
                 val request = it.tag(Tag(galleryID, index, startId)).build()
                 client.newCall(request).enqueue(callback)

app/src/main/java/xyz/quaver/pupil/types/Suggestions.kt

@@ -18,10 +18,10 @@
 
 package xyz.quaver.pupil.types
 
-import kotlinx.android.parcel.IgnoredOnParcel
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.IgnoredOnParcel
+import kotlinx.parcelize.Parcelize
 import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
-import xyz.quaver.hitomi.Suggestion
+import xyz.quaver.pupil.hitomi.Suggestion
 import xyz.quaver.pupil.util.translations
 
 @Parcelize

app/src/main/java/xyz/quaver/pupil/ui/LockActivity.kt

@@ -29,10 +29,8 @@ import androidx.biometric.BiometricPrompt
 import androidx.core.content.ContextCompat
 import com.andrognito.patternlockview.PatternLockView
 import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.activity_lock.*
-import kotlinx.android.synthetic.main.fragment_pattern_lock.*
-import kotlinx.android.synthetic.main.fragment_pin_lock.*
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.LockActivityBinding
 import xyz.quaver.pupil.ui.fragment.PINLockFragment
 import xyz.quaver.pupil.ui.fragment.PatternLockFragment
 import xyz.quaver.pupil.util.Lock
@@ -45,6 +43,8 @@ class LockActivity : AppCompatActivity() {
     private lateinit var lockManager: LockManager
     private var mode: String? = null
 
+    private lateinit var binding: LockActivityBinding
+
     private val patternLockFragment = PatternLockFragment().apply {
         var lastPass = ""
         onPatternDrawn = {
@@ -57,7 +57,7 @@ class LockActivity : AppCompatActivity() {
                         setResult(Activity.RESULT_OK)
                         finish()
                     } else
-                        lock_pattern_view.setViewMode(PatternLockView.PatternViewMode.WRONG)
+                        binding.patternLockView.setViewMode(PatternLockView.PatternViewMode.WRONG)
                 }
                 "add_lock" -> {
                     if (lastPass.isEmpty()) {
@@ -69,7 +69,7 @@ class LockActivity : AppCompatActivity() {
                             LockManager(context!!).add(Lock.generate(Lock.Type.PATTERN, it))
                             finish()
                         } else {
-                            lock_pattern_view.setViewMode(PatternLockView.PatternViewMode.WRONG)
+                            binding.patternLockView.setViewMode(PatternLockView.PatternViewMode.WRONG)
                             lastPass = ""
 
                             Snackbar.make(view!!, R.string.settings_lock_wrong_confirm, Snackbar.LENGTH_LONG).show()
@@ -92,15 +92,15 @@ class LockActivity : AppCompatActivity() {
                         setResult(Activity.RESULT_OK)
                         finish()
                     } else {
-                        indicator_dots.startAnimation(AnimationUtils.loadAnimation(context, R.anim.shake).apply {
+                        binding.indicatorDots.startAnimation(AnimationUtils.loadAnimation(context, R.anim.shake).apply {
                             setAnimationListener(object: Animation.AnimationListener {
                                 override fun onAnimationEnd(animation: Animation?) {
-                                    pin_lock_view.resetPinLockView()
-                                    pin_lock_view.isEnabled = true
+                                    binding.pinLockView.resetPinLockView()
+                                    binding.pinLockView.isEnabled = true
                                 }
 
                                 override fun onAnimationStart(animation: Animation?) {
-                                    pin_lock_view.isEnabled = false
+                                    binding.pinLockView.isEnabled = false
                                 }
 
                                 override fun onAnimationRepeat(animation: Animation?) {
@@ -114,22 +114,22 @@ class LockActivity : AppCompatActivity() {
                     if (lastPass.isEmpty()) {
                         lastPass = it
 
-                        pin_lock_view.resetPinLockView()
+                        binding.pinLockView.resetPinLockView()
                         Snackbar.make(view!!, R.string.settings_lock_confirm, Snackbar.LENGTH_LONG).show()
                     } else {
                         if (lastPass == it) {
                             LockManager(context!!).add(Lock.generate(Lock.Type.PIN, it))
                             finish()
                         } else {
-                            indicator_dots.startAnimation(AnimationUtils.loadAnimation(context, R.anim.shake).apply {
+                            binding.indicatorDots.startAnimation(AnimationUtils.loadAnimation(context, R.anim.shake).apply {
                                 setAnimationListener(object: Animation.AnimationListener {
                                     override fun onAnimationEnd(animation: Animation?) {
-                                        pin_lock_view.resetPinLockView()
-                                        pin_lock_view.isEnabled = true
+                                        binding.pinLockView.resetPinLockView()
+                                        binding.pinLockView.isEnabled = true
                                     }
 
                                     override fun onAnimationStart(animation: Animation?) {
-                                        pin_lock_view.isEnabled = false
+                                        binding.pinLockView.isEnabled = false
                                     }
 
                                     override fun onAnimationRepeat(animation: Animation?) {
@@ -173,7 +173,8 @@ class LockActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_lock)
+        binding = LockActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         lockManager = try {
             LockManager(this)
@@ -210,7 +211,7 @@ class LockActivity : AppCompatActivity() {
                     Preferences["lock_fingerprint"]
                     && BiometricManager.from(this).canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS
                 ) {
-                    lock_fingerprint.apply {
+                    binding.fingerprintBtn.apply {
                         isEnabled = true
                         setOnClickListener {
                             showBiometricPrompt()
@@ -219,7 +220,7 @@ class LockActivity : AppCompatActivity() {
                     showBiometricPrompt()
                 }
 
-                lock_pattern.apply {
+                binding.patternBtn.apply {
                     isEnabled = lockManager.contains(Lock.Type.PATTERN)
                     setOnClickListener {
                         supportFragmentManager.beginTransaction().replace(
@@ -227,7 +228,7 @@ class LockActivity : AppCompatActivity() {
                         ).commit()
                     }
                 }
-                lock_pin.apply {
+                binding.pinBtn.apply {
                     isEnabled = lockManager.contains(Lock.Type.PIN)
                     setOnClickListener {
                         supportFragmentManager.beginTransaction().replace(
@@ -235,7 +236,7 @@ class LockActivity : AppCompatActivity() {
                         ).commit()
                     }
                 }
-                lock_password.isEnabled = false
+                binding.passwordBtn.isEnabled = false
 
                 when (lockManager.locks!!.first().type) {
                     Lock.Type.PIN -> {
@@ -253,20 +254,20 @@ class LockActivity : AppCompatActivity() {
                 }
             }
             "add_lock" -> {
-                lock_pattern.isEnabled = false
-                lock_pin.isEnabled = false
-                lock_fingerprint.isEnabled = false
-                lock_password.isEnabled = false
+                binding.patternBtn.isEnabled = false
+                binding.pinBtn.isEnabled = false
+                binding.fingerprintBtn.isEnabled = false
+                binding.passwordBtn.isEnabled = false
 
                 when(intent.getStringExtra("type")!!) {
                     "pattern" -> {
-                        lock_pattern.isEnabled = true
+                        binding.patternBtn.isEnabled = true
                         supportFragmentManager.beginTransaction().add(
                             R.id.lock_content, patternLockFragment
                         ).commit()
                     }
                     "pin" -> {
-                        lock_pin.isEnabled = true
+                        binding.pinBtn.isEnabled = true
                         supportFragmentManager.beginTransaction().add(
                             R.id.lock_content, pinLockFragment
                         ).commit()

app/src/main/java/xyz/quaver/pupil/ui/MainActivity.kt

@@ -21,41 +21,42 @@ package xyz.quaver.pupil.ui
 import android.annotation.SuppressLint
 import android.content.Intent
 import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.text.InputType
 import android.text.util.Linkify
+import android.util.Log
 import android.view.KeyEvent
 import android.view.MenuItem
-import android.view.MotionEvent
 import android.view.View
+import android.view.animation.DecelerateInterpolator
 import android.widget.EditText
-import android.widget.ImageView
-import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.cardview.widget.CardView
+import androidx.core.content.ContextCompat
 import androidx.core.view.GravityCompat
-import com.google.android.material.appbar.AppBarLayout
+import androidx.core.view.ViewCompat
+import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.navigation.NavigationView
 import com.google.android.material.snackbar.Snackbar
 import com.google.firebase.crashlytics.FirebaseCrashlytics
-import kotlinx.android.synthetic.main.activity_main.*
-import kotlinx.android.synthetic.main.activity_main_content.*
 import kotlinx.coroutines.*
 import xyz.quaver.floatingsearchview.FloatingSearchView
 import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
 import xyz.quaver.floatingsearchview.util.view.MenuView
 import xyz.quaver.floatingsearchview.util.view.SearchInputView
-import xyz.quaver.hitomi.doSearch
-import xyz.quaver.hitomi.getGalleryIDsFromNozomi
-import xyz.quaver.hitomi.getSuggestionsForQuery
+import xyz.quaver.pupil.hitomi.doSearch
+import xyz.quaver.pupil.hitomi.getGalleryIDsFromNozomi
+import xyz.quaver.pupil.hitomi.getSuggestionsForQuery
 import xyz.quaver.pupil.*
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
+import xyz.quaver.pupil.databinding.MainActivityBinding
 import xyz.quaver.pupil.services.DownloadService
 import xyz.quaver.pupil.types.*
 import xyz.quaver.pupil.ui.dialog.DownloadLocationDialogFragment
 import xyz.quaver.pupil.ui.dialog.GalleryDialog
+import xyz.quaver.pupil.ui.view.MainView
+import xyz.quaver.pupil.ui.view.ProgressCard
 import xyz.quaver.pupil.util.ItemClickSupport
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.checkUpdate
@@ -63,10 +64,7 @@ import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import xyz.quaver.pupil.util.restore
 import java.util.regex.Pattern
-import kotlin.math.abs
-import kotlin.math.ceil
-import kotlin.math.min
-import kotlin.math.roundToInt
+import kotlin.math.*
 
 class MainActivity :
     BaseActivity(),
@@ -105,18 +103,20 @@ class MainActivity :
     private var loadingJob: Job? = null
     private var currentPage = 0
 
+    private lateinit var binding: MainActivityBinding
+
     override fun onCreate(savedInstanceState: Bundle?) {
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        binding = MainActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         if (intent.action == Intent.ACTION_VIEW) {
             intent.dataString?.let { url ->
                 restore(url,
                     onFailure = {
-                        Snackbar.make(this.main_recyclerview, R.string.settings_backup_failed, Snackbar.LENGTH_LONG).show()
+                        Snackbar.make(binding.contents.recyclerview, R.string.settings_backup_failed, Snackbar.LENGTH_LONG).show()
                     }, onSuccess = {
-                        Snackbar.make(this.main_recyclerview, getString(R.string.settings_restore_success, it.size), Snackbar.LENGTH_LONG).show()
+                        Snackbar.make(binding.contents.recyclerview, getString(R.string.settings_restore_success, it.size), Snackbar.LENGTH_LONG).show()
                     }
                 )
             }
@@ -125,15 +125,35 @@ class MainActivity :
         if (Preferences["download_folder", ""].isEmpty())
             DownloadLocationDialogFragment().show(supportFragmentManager, "Download Location Dialog")
 
-        checkUpdate(this)
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R &&
+            !Preferences["download_folder_ignore_warning", false] &&
+            ContextCompat.getExternalFilesDirs(this, null).filterNotNull().map { Uri.fromFile(it).toString() }
+                .contains(Preferences["download_folder", ""])
+        ) {
+            AlertDialog.Builder(this)
+                .setTitle(R.string.warning)
+                .setMessage(R.string.unaccessible_download_folder)
+                .setPositiveButton(android.R.string.ok) { _, _ ->
+                    DownloadLocationDialogFragment().show(supportFragmentManager, "Download Location Dialog")
+                }.setNegativeButton(R.string.ignore) { _, _ ->
+                    Preferences["download_folder_ignore_warning"] = true
+                }.show()
+        }
 
         initView()
     }
 
+    override fun onResume() {
+        super.onResume()
+
+        checkUpdate(this)
+    }
+
     @OptIn(ExperimentalStdlibApi::class)
     override fun onBackPressed() {
         when {
-            main_drawer_layout.isDrawerOpen(GravityCompat.START) -> main_drawer_layout.closeDrawer(GravityCompat.START)
+            binding.drawer.isDrawerOpen(GravityCompat.START) -> binding.drawer.closeDrawer(GravityCompat.START)
             queryStack.removeLastOrNull() != null && queryStack.isNotEmpty() -> runOnUiThread {
                 query = queryStack.last()
 
@@ -149,7 +169,7 @@ class MainActivity :
     override fun onDestroy() {
         super.onDestroy()
 
-        (main_recyclerview?.adapter as? GalleryBlockAdapter)?.updateAll = false
+        (binding.contents.recyclerview.adapter as? GalleryBlockAdapter)?.updateAll = false
     }
 
     override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
@@ -190,36 +210,36 @@ class MainActivity :
     }
 
     private fun initView() {
-        var prevP1 = 0
-        main_appbar_layout.addOnOffsetChangedListener(
-            AppBarLayout.OnOffsetChangedListener { _, p1 ->
-                main_searchview.translationY = p1.toFloat()
-                main_recyclerview.scrollBy(0, prevP1 - p1)
+        binding.contents.recyclerview.addOnScrollListener(object: RecyclerView.OnScrollListener() {
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                // -height of the search view < translationY < 0
+                binding.contents.searchview.translationY =
+                    min(
+                        max(
+                        binding.contents.searchview.translationY - dy,
+                        -binding.contents.searchview.binding.querySection.root.height.toFloat()
+                    ), 0F)
 
-                with(main_fab) {
-                    if (prevP1 > p1)
-                        hideMenuButton(true)
-                    else if (prevP1 < p1)
-                        showMenuButton(true)
-                }
-
-                prevP1 = p1
+                if (dy > 0)
+                    binding.contents.fab.hideMenuButton(true)
+                else if (dy < 0)
+                    binding.contents.fab.showMenuButton(true)
             }
-        )
+        })
 
-        Linkify.addLinks(main_noresult, Pattern.compile(getString(R.string.https_text)), null, null, { _, _ -> getString(R.string.https) })
+        Linkify.addLinks(binding.contents.noresult, Pattern.compile(getString(R.string.https_text)), null, null, { _, _ -> getString(R.string.https) })
 
         //NavigationView
-        main_nav_view.setNavigationItemSelectedListener(this)
+        binding.navView.setNavigationItemSelectedListener(this)
 
-        with(main_fab_cancel) {
+        with(binding.contents.cancelFab) {
             setImageResource(R.drawable.cancel)
             setOnClickListener {
                 DownloadService.cancel(this@MainActivity)
             }
         }
 
-        with(main_fab_jump) {
+        with(binding.contents.jumpFab) {
             setImageResource(R.drawable.ic_jump)
             setOnClickListener {
                 val perPage = Preferences["per_page", "25"].toInt()
@@ -247,7 +267,7 @@ class MainActivity :
             }
         }
 
-        with(main_fab_random) {
+        with(binding.contents.randomFab) {
             setImageResource(R.drawable.shuffle_variant)
             setOnClickListener {
                 runBlocking {
@@ -277,7 +297,7 @@ class MainActivity :
             }
         }
 
-        with(main_fab_id) {
+        with(binding.contents.idFab) {
             setImageResource(R.drawable.numeric)
             setOnClickListener {
                 val editText = EditText(context).apply {
@@ -310,6 +330,44 @@ class MainActivity :
             }
         }
 
+        with(binding.contents.view) {
+            setOnPageTurnListener(object: MainView.OnPageTurnListener {
+                override fun onPrev(page: Int) {
+                    currentPage--
+
+                    // disable pageturn until the contents are loaded
+                    setCurrentPage(1, false)
+
+                    ViewCompat.animate(binding.contents.searchview)
+                        .setDuration(100)
+                        .setInterpolator(DecelerateInterpolator())
+                        .translationY(0F)
+
+                    cancelFetch()
+                    clearGalleries()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+
+                override fun onNext(page: Int) {
+                    currentPage++
+
+                    // disable pageturn until the contents are loaded
+                    setCurrentPage(1, false)
+
+                    ViewCompat.animate(binding.contents.searchview)
+                        .setDuration(100)
+                        .setInterpolator(DecelerateInterpolator())
+                        .translationY(0F)
+
+                    cancelFetch()
+                    clearGalleries()
+                    fetchGalleries(query, sortMode)
+                    loadBlocks()
+                }
+            })
+        }
+
         setupSearchBar()
         setupRecyclerView()
         fetchGalleries(query, sortMode)
@@ -318,7 +376,7 @@ class MainActivity :
 
     @SuppressLint("ClickableViewAccessibility")
     private fun setupRecyclerView() {
-        with(main_recyclerview) {
+        with(binding.contents.recyclerview) {
             adapter = GalleryBlockAdapter(galleries).apply {
                 onChipClickedHandler.add {
                     runOnUiThread {
@@ -359,14 +417,12 @@ class MainActivity :
                             loadBlocks()
                         }
 
-                    completeFlag.put(galleryID, false)
-
                     closeAllItems()
                 }
             }
             ItemClickSupport.addTo(this).apply {
                 onItemClickListener = listener@{ _, position, v ->
-                    if (v !is CardView)
+                    if (v !is ProgressCard)
                         return@listener
 
                     val intent = Intent(this@MainActivity, ReaderActivity::class.java)
@@ -377,7 +433,7 @@ class MainActivity :
                 }
 
                 onItemLongClickListener = listener@{ _, position, v ->
-                    if (v !is CardView)
+                    if (v !is ProgressCard)
                         return@listener false
 
                     val galleryID = galleries.getOrNull(position) ?: return@listener true
@@ -400,207 +456,6 @@ class MainActivity :
                     true
                 }
             }
-
-            var origin = 0f
-            var target = -1
-            val perPage = Preferences["per_page", "25"].toInt()
-            setOnTouchListener { _, event ->
-                when(event.action) {
-                    MotionEvent.ACTION_UP -> {
-                        origin = 0f
-
-                        with(main_recyclerview.adapter as GalleryBlockAdapter) {
-                            if(showPrev) {
-                                showPrev = false
-
-                                val prev = main_recyclerview.layoutManager?.getChildAt(0)
-
-                                if (prev is LinearLayout) {
-                                    val icon = prev.findViewById<ImageView>(R.id.icon_prev)
-                                    prev.layoutParams.height = 1
-                                    icon.layoutParams.height = 1
-                                    icon.rotation = 180f
-                                }
-
-                                prev?.requestLayout()
-
-                                notifyItemRemoved(0)
-                            }
-
-                            if(showNext) {
-                                showNext = false
-
-                                val next = main_recyclerview.layoutManager?.let {
-                                    getChildAt(childCount-1)
-                                }
-
-                                if (next is LinearLayout) {
-                                    val icon = next.findViewById<ImageView>(R.id.icon_next)
-                                    next.layoutParams.height = 1
-                                    icon.layoutParams.height = 1
-                                    icon.rotation = 0f
-                                }
-
-                                next?.requestLayout()
-
-                                notifyItemRemoved(itemCount)
-                            }
-                        }
-
-                        if (target != -1) {
-                            currentPage = target
-
-                            runOnUiThread {
-                                cancelFetch()
-                                clearGalleries()
-                                loadBlocks()
-                            }
-
-                            target = -1
-                        }
-                    }
-                    MotionEvent.ACTION_DOWN -> origin = event.y
-                    MotionEvent.ACTION_MOVE -> {
-                        if (origin == 0f)
-                            origin = event.y
-
-                        val dist = event.y - origin
-
-                        when {
-                            !canScrollVertically(-1) -> {
-                                //TOP
-
-                                //Scrolling UP
-                                if (dist > 0 && currentPage != 0) {
-                                    with(main_recyclerview.adapter as GalleryBlockAdapter) {
-                                        if(!showPrev) {
-                                            showPrev = true
-                                            notifyItemInserted(0)
-                                        }
-                                    }
-
-                                    val prev = main_recyclerview.layoutManager?.getChildAt(0)
-
-                                    if (prev is LinearLayout) {
-                                        val icon = prev.findViewById<ImageView>(R.id.icon_prev)
-                                        val text = prev.findViewById<TextView>(R.id.text_prev).apply {
-                                            text = getString(R.string.main_move, currentPage)
-                                        }
-                                        if (dist < 360) {
-                                            prev.layoutParams.height = (dist/2).roundToInt()
-                                            icon.layoutParams.height = (dist/2).roundToInt()
-                                            icon.rotation = dist+180
-                                            text.layoutParams.width = dist.roundToInt()
-
-                                            target = -1
-                                        }
-                                        else {
-                                            prev.layoutParams.height = 180
-                                            icon.layoutParams.height = 180
-                                            icon.rotation = 180f
-                                            text.layoutParams.width = LinearLayout.LayoutParams.WRAP_CONTENT
-
-                                            target = currentPage-1
-                                        }
-                                    }
-
-                                    prev?.requestLayout()
-
-                                    return@setOnTouchListener true
-                                } else {
-                                    with(main_recyclerview.adapter as GalleryBlockAdapter) {
-                                        if(showPrev) {
-                                            showPrev = false
-
-                                            val prev = main_recyclerview.layoutManager?.getChildAt(0)
-
-                                            if (prev is LinearLayout) {
-                                                val icon = prev.findViewById<ImageView>(R.id.icon_prev)
-                                                prev.layoutParams.height = 1
-                                                icon.layoutParams.height = 1
-                                                icon.rotation = 180f
-                                            }
-
-                                            prev?.requestLayout()
-
-                                            notifyItemRemoved(0)
-                                        }
-                                    }
-                                }
-                            }
-                            !canScrollVertically(1) -> {
-                                //BOTTOM
-
-                                //Scrolling DOWN
-                                if (dist < 0 && currentPage != ceil(totalItems.toDouble()/perPage).roundToInt()-1) {
-                                    with(main_recyclerview.adapter as GalleryBlockAdapter) {
-                                        if(!showNext) {
-                                            showNext = true
-                                            notifyItemInserted(itemCount-1)
-                                        }
-                                    }
-
-                                    val next = main_recyclerview.layoutManager?.let {
-                                        getChildAt(childCount-1)
-                                    }
-
-                                    val absDist = abs(dist)
-
-                                    if (next is LinearLayout) {
-                                        val icon = next.findViewById<ImageView>(R.id.icon_next)
-                                        val text = next.findViewById<TextView>(R.id.text_next).apply {
-                                            text = getString(R.string.main_move, currentPage+2)
-                                        }
-
-                                        if (absDist < 360) {
-                                            next.layoutParams.height = (absDist/2).roundToInt()
-                                            icon.layoutParams.height = (absDist/2).roundToInt()
-                                            icon.rotation = -absDist
-                                            text.layoutParams.width = absDist.roundToInt()
-
-                                            target = -1
-                                        } else {
-                                            next.layoutParams.height = 180
-                                            icon.layoutParams.height = 180
-                                            icon.rotation = 0f
-                                            text.layoutParams.width = LinearLayout.LayoutParams.WRAP_CONTENT
-
-                                            target = currentPage+1
-                                        }
-                                    }
-
-                                    next?.requestLayout()
-
-                                    return@setOnTouchListener true
-                                } else {
-                                    with(main_recyclerview.adapter as GalleryBlockAdapter) {
-                                        if(showNext) {
-                                            showNext = false
-
-                                            val next = main_recyclerview.layoutManager?.let {
-                                                getChildAt(childCount-1)
-                                            }
-
-                                            if (next is LinearLayout) {
-                                                val icon = next.findViewById<ImageView>(R.id.icon_next)
-                                                next.layoutParams.height = 1
-                                                icon.layoutParams.height = 1
-                                                icon.rotation = 180f
-                                            }
-
-                                            next?.requestLayout()
-
-                                            notifyItemRemoved(itemCount)
-                                        }
-                                    }
-                                }
-                            }
-                        }
-                    }
-                }
-
-                false
-            }
         }
     }
 
@@ -621,10 +476,10 @@ class MainActivity :
 
     private var suggestionJob : Job? = null
     private fun setupSearchBar() {
-        with(main_searchview as xyz.quaver.pupil.ui.view.FloatingSearchView) {
+        with(binding.contents.searchview) {
             onMenuStatusChangeListener = object: FloatingSearchView.OnMenuStatusChangeListener {
                 override fun onMenuOpened() {
-                    (this@MainActivity.main_recyclerview.adapter as GalleryBlockAdapter).closeAllItems()
+                    (this@MainActivity.binding.contents.recyclerview.adapter as GalleryBlockAdapter).closeAllItems()
                 }
 
                 override fun onMenuClosed() {
@@ -708,7 +563,7 @@ class MainActivity :
                 }
             }
 
-            attachNavigationDrawerToMenuButton(main_drawer_layout)
+            attachNavigationDrawerToMenuButton(this@MainActivity.binding.drawer)
         }
     }
 
@@ -719,7 +574,7 @@ class MainActivity :
                 val thin = !item.isChecked
 
                 item.isChecked = thin
-                main_recyclerview.apply {
+                binding.contents.recyclerview.apply {
                     (adapter as GalleryBlockAdapter).apply {
                         this.thin = thin
 
@@ -760,7 +615,7 @@ class MainActivity :
 
     override fun onNavigationItemSelected(item: MenuItem): Boolean {
         runOnUiThread {
-            main_drawer_layout.closeDrawers()
+            binding.drawer.closeDrawers()
 
             when(item.itemId) {
                 R.id.main_drawer_home -> {
@@ -829,19 +684,17 @@ class MainActivity :
         loadingJob?.cancel()
     }
 
-    private fun clearGalleries() {
+    private fun clearGalleries() = CoroutineScope(Dispatchers.Main).launch {
         galleries.clear()
 
-        with(main_recyclerview.adapter as GalleryBlockAdapter?) {
+        with(binding.contents.recyclerview.adapter as GalleryBlockAdapter?) {
             this ?: return@with
 
-            this.completeFlag.clear()
             this.notifyDataSetChanged()
         }
 
-        main_appbar_layout.setExpanded(true)
-        main_noresult.visibility = View.INVISIBLE
-        main_progressbar.show()
+        binding.contents.noresult.visibility = View.INVISIBLE
+        binding.contents.progressbar.show()
     }
 
     private fun fetchGalleries(query: String, sortMode: SortMode) {
@@ -856,7 +709,7 @@ class MainActivity :
         }
 
         if (query.isNotEmpty() && mode != Mode.SEARCH) {
-            Snackbar.make(this@MainActivity.main_recyclerview, R.string.search_all, Snackbar.LENGTH_SHORT).apply {
+            Snackbar.make(binding.contents.recyclerview, R.string.search_all, Snackbar.LENGTH_SHORT).apply {
                 setAction(android.R.string.ok) {
                     cancelFetch()
                     clearGalleries()
@@ -949,17 +802,21 @@ class MainActivity :
                 }
             } catch (e: Exception) {
 
-                if (e.message != "No result")
+                if (e !is CancellationException)
                     FirebaseCrashlytics.getInstance().recordException(e)
 
                 withContext(Dispatchers.Main) {
-                    main_noresult.visibility = View.VISIBLE
-                    main_progressbar.hide()
+                    binding.contents.noresult.visibility = View.VISIBLE
+                    binding.contents.progressbar.hide()
                 }
 
                 return@launch
             }
 
+            launch(Dispatchers.Main) {
+                binding.contents.view.setCurrentPage(currentPage + 1, galleryIDs.size > (currentPage+1)*perPage)
+            }
+
             galleryIDs.slice(currentPage*perPage until min(currentPage*perPage+perPage, galleryIDs.size)).chunked(5).let { chunks ->
                 for (chunk in chunks)
                     chunk.map { galleryID ->
@@ -971,10 +828,10 @@ class MainActivity :
                     }.forEach {
                         it.await()?.also {
                             withContext(Dispatchers.Main) {
-                                main_progressbar.hide()
+                                binding.contents.progressbar.hide()
 
                                 galleries.add(it)
-                                main_recyclerview.adapter!!.notifyItemInserted(galleries.size - 1)
+                                binding.contents.recyclerview.adapter!!.notifyItemInserted(galleries.size - 1)
                             }
                         }
                     }

app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt

@@ -45,17 +45,14 @@ import com.google.android.material.snackbar.Snackbar
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import com.google.mlkit.vision.face.Face
 import com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
-import kotlinx.android.synthetic.main.activity_reader.*
-import kotlinx.android.synthetic.main.activity_reader.view.*
-import kotlinx.android.synthetic.main.dialog_numberpicker.view.*
-import kotlinx.android.synthetic.main.reader_eye_card.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
-import xyz.quaver.Code
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.ReaderAdapter
+import xyz.quaver.pupil.databinding.NumberpickerDialogBinding
+import xyz.quaver.pupil.databinding.ReaderActivityBinding
 import xyz.quaver.pupil.favorites
 import xyz.quaver.pupil.services.DownloadService
 import xyz.quaver.pupil.util.Preferences
@@ -75,7 +72,7 @@ class ReaderActivity : BaseActivity() {
     set(value) {
         field = value
 
-        (reader_recyclerview.adapter as ReaderAdapter).isFullScreen = value
+        (binding.recyclerview.adapter as ReaderAdapter).isFullScreen = value
     }
 
     private lateinit var cache: Cache
@@ -118,9 +115,12 @@ class ReaderActivity : BaseActivity() {
     private var eyeType: Eye? = null
     private var eyeTime: Long = 0L
 
+    private lateinit var binding: ReaderActivityBinding
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_reader)
+        binding = ReaderActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         title = getString(R.string.reader_loading)
         supportActionBar?.setDisplayHomeAsUpEnabled(false)
@@ -161,12 +161,10 @@ class ReaderActivity : BaseActivity() {
         }
     }
 
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
         menuInflater.inflate(R.menu.reader, menu)
 
-        with(menu?.findItem(R.id.reader_menu_favorite)) {
-            this ?: return@with
-
+        with(menu.findItem(R.id.reader_menu_favorite)) {
             if (favorites.contains(galleryID))
                 (icon as Animatable).start()
         }
@@ -178,17 +176,19 @@ class ReaderActivity : BaseActivity() {
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when(item.itemId) {
             R.id.reader_menu_page_indicator -> {
-                val view = LayoutInflater.from(this).inflate(R.layout.dialog_numberpicker, reader_layout, false)
-                with(view.dialog_number_picker) {
+                // TODO: Switch to DialogFragment
+                val binding = NumberpickerDialogBinding.inflate(layoutInflater, binding.root, false)
+
+                with(binding.numberPicker) {
                     minValue = 1
-                    maxValue = cache.metadata.reader?.galleryInfo?.files?.size ?: 0
+                    maxValue = cache.metadata.galleryInfo?.files?.size ?: 0
                     value = currentPage
                 }
                 val dialog = AlertDialog.Builder(this).apply {
-                    setView(view)
+                    setView(binding.root)
                 }.create()
-                view.dialog_ok.setOnClickListener {
-                    (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(view.dialog_number_picker.value-1, 0)
+                binding.okButton.setOnClickListener {
+                    (this@ReaderActivity.binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(binding.numberPicker.value-1, 0)
                     dialog.dismiss()
                 }
 
@@ -258,12 +258,12 @@ class ReaderActivity : BaseActivity() {
         //currentPage is 1-based
         return when(keyCode) {
             KeyEvent.KEYCODE_VOLUME_UP -> {
-                (reader_recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-2, 0)
+                (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-2, 0)
 
                 true
             }
             KeyEvent.KEYCODE_VOLUME_DOWN -> {
-                (reader_recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(currentPage, 0)
+                (binding.recyclerview.layoutManager as LinearLayoutManager?)?.scrollToPositionWithOffset(currentPage, 0)
 
                 true
             }
@@ -285,42 +285,35 @@ class ReaderActivity : BaseActivity() {
                 if (downloader.progress[galleryID]?.isEmpty() == true) {      //Gallery not found
                     update = false
                     Snackbar
-                        .make(reader_layout, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
+                        .make(binding.root, R.string.reader_failed_to_find_gallery, Snackbar.LENGTH_INDEFINITE)
                         .show()
 
                     return@launch
                 }
 
-                reader_download_progressbar.max = reader_recyclerview.adapter?.itemCount ?: 0
-                reader_download_progressbar.progress =
+                binding.downloadProgressbar.max = binding.recyclerview.adapter?.itemCount ?: 0
+                binding.downloadProgressbar.progress =
                     downloader.progress[galleryID]?.count { it.isInfinite() } ?: 0
 
                 if (title == getString(R.string.reader_loading)) {
-                    val reader = cache.metadata.reader
+                    val galleryInfo = cache.metadata.galleryInfo
 
-                    if (reader != null) {
-                        with(reader_recyclerview.adapter as ReaderAdapter) {
-                            this.reader = reader
+                    if (galleryInfo != null) {
+                        with(binding.recyclerview.adapter as ReaderAdapter) {
+                            this.galleryInfo = galleryInfo
                             notifyDataSetChanged()
                         }
 
-                        title = reader.galleryInfo.title
+                        title = galleryInfo.title
                         menu?.findItem(R.id.reader_menu_page_indicator)?.title =
-                            "$currentPage/${reader.galleryInfo.files.size}"
+                            "$currentPage/${galleryInfo.files.size}"
 
-                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(
-                            this@ReaderActivity,
-                            when (reader.code) {
-                                Code.HITOMI -> R.drawable.hitomi
-                                Code.HIYOBI -> R.drawable.ic_hiyobi
-                                else -> android.R.color.transparent
-                            }
-                        )
+                        menu?.findItem(R.id.reader_type)?.icon = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.hitomi)
                     }
                 }
 
                 if (downloader.isCompleted(galleryID)) {   //Download finished
-                    reader_download_progressbar.visibility = View.GONE
+                    binding.downloadProgressbar.visibility = View.GONE
 
                     animateDownloadFAB(false)
                 }
@@ -329,7 +322,7 @@ class ReaderActivity : BaseActivity() {
     }
 
     private fun initView() {
-        with(reader_recyclerview) {
+        with(binding.recyclerview) {
             adapter = ReaderAdapter(this@ReaderActivity, galleryID).apply {
                 onItemClickListener = {
                     if (isScroll) {
@@ -339,7 +332,7 @@ class ReaderActivity : BaseActivity() {
                         scrollMode(false)
                         fullscreen(true)
                     } else {
-                        (reader_recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage, 0) //Moves to next page because currentPage is 1-based indexing
+                        (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage, 0) //Moves to next page because currentPage is 1-based indexing
                     }
                 }
             }
@@ -349,9 +342,9 @@ class ReaderActivity : BaseActivity() {
                     super.onScrolled(recyclerView, dx, dy)
 
                     if (dy < 0)
-                        this@ReaderActivity.reader_fab.showMenuButton(true)
+                        binding.fab.showMenuButton(true)
                     else if (dy > 0)
-                        this@ReaderActivity.reader_fab.hideMenuButton(true)
+                        binding.fab.hideMenuButton(true)
 
                     val layoutManager = recyclerView.layoutManager as LinearLayoutManager
 
@@ -363,7 +356,7 @@ class ReaderActivity : BaseActivity() {
             })
         }
 
-        with(reader_fab_download) {
+        with(binding.downloadFab) {
             animateDownloadFAB(DownloadManager.getInstance(this@ReaderActivity).getDownloadFolder(galleryID) != null) //If download in progress, animate button
 
             setOnClickListener {
@@ -380,14 +373,14 @@ class ReaderActivity : BaseActivity() {
             }
         }
 
-        with(reader_fab_retry) {
+        with(binding.retryFab) {
             setImageResource(R.drawable.refresh)
             setOnClickListener {
                 DownloadService.download(context, galleryID)
             }
         }
 
-        with(reader_fab_auto) {
+        with(binding.autoFab) {
             setImageResource(R.drawable.eye_white)
             setOnClickListener {
                 when {
@@ -407,13 +400,13 @@ class ReaderActivity : BaseActivity() {
             }
         }
 
-        with(reader_fab_fullscreen) {
+        with(binding.fullscreenFab) {
             setImageResource(R.drawable.ic_fullscreen)
             setOnClickListener {
                 isFullscreen = true
                 fullscreen(isFullscreen)
 
-                this@ReaderActivity.reader_fab.close(true)
+                binding.fab.close(true)
             }
         }
     }
@@ -423,8 +416,8 @@ class ReaderActivity : BaseActivity() {
             if (isFullscreen) {
                 flags = flags or WindowManager.LayoutParams.FLAG_FULLSCREEN
                 supportActionBar?.hide()
-                this@ReaderActivity.reader_fab.visibility = View.INVISIBLE
-                this@ReaderActivity.scroller.let {
+                binding.fab.visibility = View.INVISIBLE
+                binding.scroller.let {
                     it.handleWidth = resources.getDimensionPixelSize(R.dimen.thumb_height)
                     it.handleHeight = resources.getDimensionPixelSize(R.dimen.thumb_width)
                     it.handleDrawable = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.thumb_horizontal)
@@ -433,8 +426,8 @@ class ReaderActivity : BaseActivity() {
             } else {
                 flags = flags and WindowManager.LayoutParams.FLAG_FULLSCREEN.inv()
                 supportActionBar?.show()
-                this@ReaderActivity.reader_fab.visibility = View.VISIBLE
-                this@ReaderActivity.scroller.let {
+                binding.fab.visibility = View.VISIBLE
+                binding.scroller.let {
                     it.handleWidth = resources.getDimensionPixelSize(R.dimen.thumb_width)
                     it.handleHeight = resources.getDimensionPixelSize(R.dimen.thumb_height)
                     it.handleDrawable = ContextCompat.getDrawable(this@ReaderActivity, R.drawable.thumb)
@@ -445,27 +438,27 @@ class ReaderActivity : BaseActivity() {
             window.attributes = this
         }
 
-        reader_recyclerview.adapter = reader_recyclerview.adapter   // Force to redraw
+        binding.recyclerview.adapter = binding.recyclerview.adapter   // Force to redraw
     }
 
     private fun scrollMode(isScroll: Boolean) {
         if (isScroll) {
             snapHelper.attachToRecyclerView(null)
-            reader_recyclerview.layoutManager = LinearLayoutManager(this)
+            binding.recyclerview.layoutManager = LinearLayoutManager(this)
         } else {
-            snapHelper.attachToRecyclerView(reader_recyclerview)
-            reader_recyclerview.layoutManager = object: LinearLayoutManager(this, HORIZONTAL, Preferences["rtl", false]) {
+            snapHelper.attachToRecyclerView(binding.recyclerview)
+            binding.recyclerview.layoutManager = object: LinearLayoutManager(this, HORIZONTAL, Preferences["rtl", false]) {
                 override fun calculateExtraLayoutSpace(state: RecyclerView.State, extraLayoutSpace: IntArray) {
                     extraLayoutSpace.fill(600)
                 }
             }
         }
 
-        (reader_recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-1, 0)
+        (binding.recyclerview.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(currentPage-1, 0)
     }
 
     private fun animateDownloadFAB(animate: Boolean) {
-        with(reader_fab_download) {
+        with(binding.downloadFab) {
             if (animate) {
                 val icon = AnimatedVectorDrawableCompat.create(context, R.drawable.ic_downloading)
 
@@ -494,7 +487,7 @@ class ReaderActivity : BaseActivity() {
     }
 
     val cameraCallback: (List<Face>) -> Unit = callback@{ faces ->
-        eye_card.dot.let {
+        binding.eyeCard.dot.let {
             it.visibility = View.VISIBLE
             CoroutineScope(Dispatchers.Main).launch {
                 delay(50)
@@ -504,9 +497,9 @@ class ReaderActivity : BaseActivity() {
 
         if (faces.size != 1)
             ContextCompat.getDrawable(this, R.drawable.eye_off).let {
-                with(eye_card) {
-                    left_eye.setImageDrawable(it)
-                    right_eye.setImageDrawable(it)
+                with(binding.eyeCard) {
+                    leftEye.setImageDrawable(it)
+                    rightEye.setImageDrawable(it)
                 }
 
                 return@callback
@@ -517,16 +510,16 @@ class ReaderActivity : BaseActivity() {
             faces[0].leftEyeOpenProbability?.let { it > 0.4 } == true
         )
 
-        with(eye_card) {
-            left_eye.setImageDrawable(
+        with(binding.eyeCard) {
+            leftEye.setImageDrawable(
                 ContextCompat.getDrawable(
-                    context,
+                    leftEye.context,
                     if (left) R.drawable.eye else R.drawable.eye_closed
                 )
             )
-            right_eye.setImageDrawable(
+            rightEye.setImageDrawable(
                 ContextCompat.getDrawable(
-                    context,
+                    rightEye.context,
                     if (right) R.drawable.eye else R.drawable.eye_closed
                 )
             )
@@ -553,7 +546,7 @@ class ReaderActivity : BaseActivity() {
         }
 
         if (eyeType != null && System.currentTimeMillis() - eyeTime > 100) {
-            (this@ReaderActivity.reader_recyclerview.layoutManager as LinearLayoutManager).let {
+            (binding.recyclerview.layoutManager as LinearLayoutManager).let {
                 it.scrollToPositionWithOffset(when(eyeType!!) {
                     Eye.RIGHT -> {
                         if (it.reverseLayout) currentPage - 2 else currentPage
@@ -569,11 +562,11 @@ class ReaderActivity : BaseActivity() {
     }
 
     private fun toggleCamera() {
-        val eyes = this@ReaderActivity.eye_card
+        val eyes = binding.eyeCard.root
         when (camera) {
             null -> {
-                reader_fab_auto.labelText = getString(R.string.reader_fab_auto_cancel)
-                reader_fab_auto.setImageResource(R.drawable.eye_off_white)
+                binding.autoFab.labelText = getString(R.string.reader_fab_auto_cancel)
+                binding.autoFab.setImageResource(R.drawable.eye_off_white)
                 eyes.apply {
                     visibility = View.VISIBLE
                     TranslateAnimation(0F, 0F, -100F, 0F).apply {
@@ -586,8 +579,8 @@ class ReaderActivity : BaseActivity() {
                 cameraEnabled = true
             }
             else -> {
-                reader_fab_auto.labelText = getString(R.string.reader_fab_auto)
-                reader_fab_auto.setImageResource(R.drawable.eye_white)
+                binding.autoFab.labelText = getString(R.string.reader_fab_auto)
+                binding.autoFab.setImageResource(R.drawable.eye_white)
                 eyes.apply {
                     TranslateAnimation(0F, 0F, 0F, -100F).apply {
                         duration = 500

app/src/main/java/xyz/quaver/pupil/ui/dialog/DefaultQueryDialog.kt

@@ -18,30 +18,30 @@
 
 package xyz.quaver.pupil.ui.dialog
 
-import android.annotation.SuppressLint
 import android.app.Dialog
-import android.content.Context
 import android.os.Bundle
 import android.text.Editable
 import android.text.TextWatcher
-import android.view.LayoutInflater
-import android.view.View
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AlertDialog
-import kotlinx.android.synthetic.main.dialog_default_query.*
-import kotlinx.android.synthetic.main.dialog_default_query.view.*
+import androidx.fragment.app.DialogFragment
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.DefaultQueryDialogBinding
 import xyz.quaver.pupil.types.Tags
 import xyz.quaver.pupil.util.Preferences
 
-class DefaultQueryDialog(context : Context) : AlertDialog(context) {
+class DefaultQueryDialog : DialogFragment() {
 
-    private val languages = context.resources.getStringArray(R.array.languages).map {
-        it.split("|").let { split ->
-            Pair(split[0], split[1])
-        }
-    }.toMap()
-    private val reverseLanguages = languages.entries.associate { (k, v) -> v to k }
+    private val languages: Map<String, String> by lazy {
+        requireContext().resources.getStringArray(R.array.languages).map {
+            it.split("|").let { split ->
+                Pair(split[0], split[1])
+            }
+        }.toMap()
+    }
+    private val reverseLanguages: Map<String, String> by lazy {
+        languages.entries.associate { (k, v) -> v to k }
+    }
 
     private val excludeBL = "-male:yaoi"
     private val excludeGuro = listOf("-female:guro", "-male:guro")
@@ -49,46 +49,15 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
 
     var onPositiveButtonClickListener : ((Tags) -> (Unit))? = null
 
-    @SuppressLint("InflateParams")
-    override fun onCreate(savedInstanceState: Bundle?) {
-        setTitle(R.string.default_query_dialog_title)
-        setView(build())
-        setButton(Dialog.BUTTON_POSITIVE, context.getString(android.R.string.ok)) { _, _ ->
-            val newTags = Tags.parse(default_query_dialog_edittext.text.toString())
+    private var _binding: DefaultQueryDialogBinding? = null
+    private val binding get() = _binding!!
 
-            with(default_query_dialog_language_selector) {
-                if (selectedItemPosition != 0)
-                    newTags.add("language:${reverseLanguages[selectedItem]}")
-            }
-
-            if (default_query_dialog_BL_checkbox.isChecked)
-                newTags.add(excludeBL)
-
-            if (default_query_dialog_guro_checkbox.isChecked)
-                excludeGuro.forEach { tag ->
-                    newTags.add(tag)
-                }
-
-            if (default_query_dialog_loli_checkbox.isChecked)
-                excludeLoli.forEach { tag ->
-                    newTags.add(tag)
-                }
-
-            onPositiveButtonClickListener?.invoke(newTags)
-        }
-
-        super.onCreate(savedInstanceState)
-    }
-
-    @SuppressLint("InflateParams")
-    private fun build() : View {
+    private fun initView() {
         val tags = Tags.parse(
             Preferences["default_query"]
         )
 
-        val view = LayoutInflater.from(context).inflate(R.layout.dialog_default_query, null)
-
-        with(view.default_query_dialog_language_selector) {
+        with(binding.languageSelector) {
             adapter =
                 ArrayAdapter(
                     context,
@@ -111,13 +80,13 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
             }
         }
 
-        with(view.default_query_dialog_BL_checkbox) {
+        with(binding.BLCheckbox) {
             isChecked = tags.contains(excludeBL)
             if (tags.contains(excludeBL))
                 tags.remove(excludeBL)
         }
 
-        with(view.default_query_dialog_guro_checkbox) {
+        with(binding.guroCheckbox) {
             isChecked = excludeGuro.all { tags.contains(it) }
             if (excludeGuro.all { tags.contains(it) })
                 excludeGuro.forEach {
@@ -125,7 +94,7 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
                 }
         }
 
-        with(view.default_query_dialog_loli_checkbox) {
+        with(binding.loliCheckbox) {
             isChecked = excludeLoli.all { tags.contains(it) }
             if (excludeLoli.all { tags.contains(it) })
                 excludeLoli.forEach {
@@ -133,7 +102,7 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
                 }
         }
 
-        with(view.default_query_dialog_edittext) {
+        with(binding.edittext) {
             setText(tags.toString(), android.widget.TextView.BufferType.EDITABLE)
             addTextChangedListener(object : TextWatcher {
                 override fun beforeTextChanged(
@@ -158,8 +127,45 @@ class DefaultQueryDialog(context : Context) : AlertDialog(context) {
                 }
             })
         }
+    }
 
-        return view
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        _binding = DefaultQueryDialogBinding.inflate(layoutInflater)
+
+        initView()
+
+        return AlertDialog.Builder(requireContext()).apply {
+            setTitle(R.string.default_query_dialog_title)
+            setView(binding.root)
+            setPositiveButton(android.R.string.ok) { _, _ ->
+                val newTags = Tags.parse(binding.edittext.text.toString())
+
+                with(binding.languageSelector) {
+                    if (selectedItemPosition != 0)
+                        newTags.add("language:${reverseLanguages[selectedItem]}")
+                }
+
+                if (binding.BLCheckbox.isChecked)
+                    newTags.add(excludeBL)
+
+                if (binding.guroCheckbox.isChecked)
+                    excludeGuro.forEach { tag ->
+                        newTags.add(tag)
+                    }
+
+                if (binding.loliCheckbox.isChecked)
+                    excludeLoli.forEach { tag ->
+                        newTags.add(tag)
+                    }
+
+                onPositiveButtonClickListener?.invoke(newTags)
+            }
+        }.create()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
     }
 
 }

app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadFolderNameDialogFragment.kt

@@ -18,17 +18,15 @@
 
 package xyz.quaver.pupil.ui.dialog
 
-import android.annotation.SuppressLint
 import android.app.Dialog
 import android.os.Bundle
-import android.view.View
 import android.view.ViewGroup
 import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.dialog_download_folder_name.view.*
 import kotlinx.coroutines.runBlocking
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.DownloadFolderNameDialogBinding
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.downloader.Cache
 import xyz.quaver.pupil.util.formatDownloadFolder
@@ -37,38 +35,48 @@ import xyz.quaver.pupil.util.formatMap
 
 class DownloadFolderNameDialogFragment : DialogFragment() {
 
-    @SuppressLint("InflateParams")
-    private fun build(): View {
+    private var _binding: DownloadFolderNameDialogBinding? = null
+    private val binding get() = _binding!!
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        _binding = DownloadFolderNameDialogBinding.inflate(layoutInflater)
+
+        initView()
+
+        return Dialog(requireContext()).apply {
+            setContentView(binding.root)
+            window?.attributes?.width = ViewGroup.LayoutParams.MATCH_PARENT
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
+    }
+
+    private fun initView() {
         val galleryID = Cache.instances.let { if (it.size == 0) 1199708 else it.keys.elementAt((0 until it.size).random()) }
         val galleryBlock = runBlocking {
             Cache.getInstance(requireContext(), galleryID).getGalleryBlock()
         }
 
-        return layoutInflater.inflate(R.layout.dialog_download_folder_name, null).apply {
-            message.text = getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolder() ?: "")
-            edittext.setText(Preferences["download_folder_name", "[-id-] -title-"])
-            edittext.addTextChangedListener {
-                message.text = getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolderTest(it.toString()) ?: "")
+        binding.message.text = getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolder() ?: "")
+        binding.edittext.setText(Preferences["download_folder_name", "[-id-] -title-"])
+        binding.edittext.addTextChangedListener {
+            binding.message.text = requireContext().getString(R.string.settings_download_folder_name_message, formatMap.keys.toString(), galleryBlock?.formatDownloadFolderTest(it.toString()) ?: "")
+        }
+        binding.okButton.setOnClickListener {
+            val newValue = binding.edittext.text.toString()
+
+            if ((newValue as? String)?.contains("/") != false) {
+                Snackbar.make(binding.root, R.string.settings_invalid_download_folder_name, Snackbar.LENGTH_SHORT).show()
+                return@setOnClickListener
             }
-            ok_button.setOnClickListener {
-                val newValue = edittext.text.toString()
 
-                if ((newValue as? String)?.contains("/") != false) {
-                    Snackbar.make(this, R.string.settings_invalid_download_folder_name, Snackbar.LENGTH_SHORT).show()
-                    return@setOnClickListener
-                }
+            Preferences["download_folder_name"] = binding.edittext.text.toString()
 
-                Preferences["download_folder_name"] = edittext.text.toString()
-
-                dismiss()
-            }
+            dismiss()
         }
     }
 
-    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
-       Dialog(requireContext()).apply {
-           setContentView(build())
-           window?.attributes?.width = ViewGroup.LayoutParams.MATCH_PARENT
-       }
-
 }

app/src/main/java/xyz/quaver/pupil/ui/dialog/DownloadLocationDialogFragment.kt

@@ -18,52 +18,49 @@
 
 package xyz.quaver.pupil.ui.dialog
 
-import android.annotation.SuppressLint
 import android.app.Activity
 import android.app.Dialog
 import android.content.Intent
 import android.os.Build
 import android.os.Bundle
-import android.view.View
-import android.widget.LinearLayout
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.dialog_download_folder_name.view.*
-import kotlinx.android.synthetic.main.item_download_folder.view.*
 import net.rdrei.android.dirchooser.DirectoryChooserActivity
 import net.rdrei.android.dirchooser.DirectoryChooserConfig
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.toFile
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.DownloadLocationDialogBinding
+import xyz.quaver.pupil.databinding.DownloadLocationItemBinding
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.byteToString
 import xyz.quaver.pupil.util.downloader.DownloadManager
-import xyz.quaver.pupil.util.migrate
 import java.io.File
 
 class DownloadLocationDialogFragment : DialogFragment() {
-    private val entries = mutableMapOf<File?, View>()
+
+    private var _binding: DownloadLocationDialogBinding? = null
+    private val binding get() = _binding!!
+
+    private val entries = mutableMapOf<File?, DownloadLocationItemBinding>()
 
     private val requestDownloadFolderLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
         if (it.resultCode == Activity.RESULT_OK) {
-            val activity = activity ?: return@registerForActivityResult
             val context = context ?: return@registerForActivityResult
             val dialog = dialog ?: return@registerForActivityResult
 
             it.data?.data?.also { uri ->
-                val takeFlags: Int =
-                    activity.intent.flags and
-                            (Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+                val takeFlags: Int = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
 
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
                     context.contentResolver.takePersistableUriPermission(uri, takeFlags)
 
                 if (kotlin.runCatching { FileX(context, uri).canWrite() }.getOrDefault(false)) {
-                    entries[null]?.location_available?.text = uri.toFile(context)?.canonicalPath
+                    entries[null]?.locationAvailable?.text = uri.toFile(context)?.canonicalPath
                     Preferences["download_folder"] = uri.toString()
                 } else {
                     Snackbar.make(
@@ -75,9 +72,18 @@ class DownloadLocationDialogFragment : DialogFragment() {
                     val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
                     val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
                     entries[key]!!.button.isChecked = true
-                    if (key == null) entries[key]!!.location_available.text = downloadFolder
+                    if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
                 }
             }
+        } else {
+            val downloadFolder = DownloadManager.getInstance(context ?: return@registerForActivityResult).downloadFolder.canonicalPath
+            val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
+            if (key == null)
+                entries[key]!!.locationAvailable.text = downloadFolder
+            else {
+                entries[null]!!.button.isChecked = false
+                entries[key]!!.button.isChecked = true
+            }
         }
     }
 
@@ -98,51 +104,46 @@ class DownloadLocationDialogFragment : DialogFragment() {
                 val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
                 val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
                 entries[key]!!.button.isChecked = true
-                if (key == null) entries[key]!!.location_available.text = downloadFolder
+                if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
             }
             else {
-                entries[null]?.location_available?.text = directory
+                entries[null]?.locationAvailable?.text = directory
                 Preferences["download_folder"] = File(directory).toURI().toString()
             }
         }
     }
 
-    @SuppressLint("InflateParams")
-    private fun build() : View? {
-        val context = context ?: return null
-
-        val view = layoutInflater.inflate(R.layout.dialog_download_folder, null) as LinearLayout
-
-        val externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null)
+    private fun initView() {
+        val externalFilesDirs = ContextCompat.getExternalFilesDirs(requireContext(), null)
 
         externalFilesDirs.forEachIndexed { index, dir ->
             dir ?: return@forEachIndexed
 
-            view.addView(layoutInflater.inflate(R.layout.item_download_folder, view, false).apply {
-                location_type.text = context.getString(when (index) {
+            DownloadLocationItemBinding.inflate(layoutInflater, binding.root, true).apply {
+                locationType.text = requireContext().getString(when (index) {
                     0 -> R.string.settings_download_folder_internal
                     else -> R.string.settings_download_folder_removable
                 })
-                location_available.text = context.getString(
+                locationAvailable.text = requireContext().getString(
                     R.string.settings_download_folder_available,
                     byteToString(dir.freeSpace)
                 )
-                setOnClickListener {
-                    entries.values.forEach {
-                        it.button.isChecked = false
+                root.setOnClickListener {
+                    entries.values.forEach { entry ->
+                        entry.button.isChecked = false
                     }
                     button.performClick()
                     Preferences["download_folder"] = dir.toUri().toString()
                 }
                 entries[dir] = this
-            })
+            }
         }
 
-        view.addView(layoutInflater.inflate(R.layout.item_download_folder, view, false).apply {
-            location_type.text = context.getString(R.string.settings_download_folder_custom)
-            setOnClickListener {
-                entries.values.forEach {
-                    it.button.isChecked = false
+        DownloadLocationItemBinding.inflate(layoutInflater, binding.root, true).apply {
+            locationType.text = requireContext().getString(R.string.settings_download_folder_custom)
+            root.setOnClickListener {
+                entries.values.forEach { entry ->
+                    entry.button.isChecked = false
                 }
                 button.performClick()
 
@@ -166,31 +167,33 @@ class DownloadLocationDialogFragment : DialogFragment() {
                 }
             }
             entries[null] = this
-        })
+        }
 
-        val downloadFolder = DownloadManager.getInstance(context).downloadFolder.canonicalPath
+        val downloadFolder = DownloadManager.getInstance(requireContext()).downloadFolder.canonicalPath
         val key = entries.keys.firstOrNull { it?.canonicalPath == downloadFolder }
         entries[key]!!.button.isChecked = true
-        if (key == null) entries[key]!!.location_available.text = downloadFolder
-
-        return view
+        if (key == null) entries[key]!!.locationAvailable.text = downloadFolder
     }
 
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
-        val builder = AlertDialog.Builder(requireContext())
+        _binding = DownloadLocationDialogBinding.inflate(layoutInflater)
 
-        builder
-            .setTitle(R.string.settings_download_folder)
-            .setView(build())
-            .setPositiveButton(requireContext().getText(android.R.string.ok)) { _, _ ->
+        initView()
+
+        return AlertDialog.Builder(requireContext()).apply {
+            setTitle(R.string.settings_download_folder)
+            setView(binding.root)
+            setPositiveButton(requireContext().getText(android.R.string.ok)) { _, _ ->
                 if (Preferences["download_folder", ""].isEmpty())
-                    Preferences["download_folder"] = context?.getExternalFilesDir(null)?.toUri()?.toString() ?: ""
-
-                DownloadManager.getInstance(requireContext()).migrate()
+                    Preferences["download_folder"] = context.getExternalFilesDir(null)?.toUri()?.toString() ?: ""
             }
 
-        isCancelable = false
+            isCancelable = false
+        }.create()
+    }
 
-        return builder.create()
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
     }
 }

app/src/main/java/xyz/quaver/pupil/ui/dialog/GalleryDialog.kt

@@ -22,7 +22,6 @@ import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
-import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.LinearLayout.LayoutParams
@@ -32,21 +31,17 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.snackbar.Snackbar
-import kotlinx.android.synthetic.main.dialog_gallery.*
-import kotlinx.android.synthetic.main.dialog_gallery_details.view.*
-import kotlinx.android.synthetic.main.dialog_gallery_dotindicator.view.*
-import kotlinx.android.synthetic.main.item_gallery_details.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import xyz.quaver.hitomi.Gallery
-import xyz.quaver.hitomi.getGallery
+import xyz.quaver.pupil.hitomi.Gallery
+import xyz.quaver.pupil.hitomi.getGallery
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.GalleryBlockAdapter
 import xyz.quaver.pupil.adapters.ThumbnailPageAdapter
+import xyz.quaver.pupil.databinding.*
 import xyz.quaver.pupil.favoriteTags
-import xyz.quaver.pupil.histories
 import xyz.quaver.pupil.types.Tag
 import xyz.quaver.pupil.ui.ReaderActivity
 import xyz.quaver.pupil.ui.view.TagChip
@@ -60,9 +55,12 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
 
     val onChipClickedHandler = ArrayList<((Tag) -> (Unit))>()
 
+    private lateinit var binding: GalleryDialogBinding
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.dialog_gallery)
+        binding = GalleryDialogBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         window?.attributes.apply {
             this ?: return@apply
@@ -71,7 +69,7 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
             height = LayoutParams.MATCH_PARENT
         }
 
-        with(gallery_fab) {
+        with(binding.fab) {
             setImageDrawable(ContextCompat.getDrawable(context, R.drawable.arrow_right))
             setOnClickListener {
                 context.startActivity(Intent(context, ReaderActivity::class.java).apply {
@@ -84,12 +82,12 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
             try {
                 val gallery = getGallery(galleryID)
 
-                gallery_cover.post {
-                    gallery_progressbar.visibility = View.GONE
-                    gallery_title.text = gallery.title
-                    gallery_artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }
+                launch (Dispatchers.Main) {
+                    binding.progressbar.visibility = View.GONE
+                    binding.title.text = gallery.title
+                    binding.artist.text = gallery.artists.joinToString(", ") { it.wordCapitalize() }
 
-                    with(gallery_type) {
+                    with(binding.type) {
                         text = gallery.type.wordCapitalize()
                         setOnClickListener {
                             gallery.type.let {
@@ -106,14 +104,14 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
                         }
                     }
 
-                    gallery_cover.showImage(Uri.parse(gallery.cover))
+                    binding.cover.showImage(Uri.parse(gallery.cover))
 
                     addDetails(gallery)
                     addThumbnails(gallery)
                     addRelated(gallery)
                 }
             } catch (e: Exception) {
-                Snackbar.make(gallery_layout, R.string.unable_to_connect, Snackbar.LENGTH_INDEFINITE).apply {
+                Snackbar.make(binding.root, R.string.unable_to_connect, Snackbar.LENGTH_INDEFINITE).apply {
                     if (Locale.getDefault().language == "ko")
                         setAction(context.getText(R.string.https_text)) {
                             context.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(context.getString(R.string.https))))
@@ -124,10 +122,8 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
     }
 
     private fun addDetails(gallery: Gallery) {
-        val inflater = LayoutInflater.from(context)
-
-        inflater.inflate(R.layout.dialog_gallery_details, gallery_contents, false).apply {
-            gallery_details.setText(R.string.gallery_details)
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_details)
 
             listOf(
                 R.string.gallery_artists,
@@ -164,13 +160,13 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
                     }
                 )
             ).filter {
-                (_, content) -> content.isNotEmpty()
+                    (_, content) -> content.isNotEmpty()
             }.forEach { (title, content) ->
-                inflater.inflate(R.layout.item_gallery_details, gallery_details_contents, false).apply {
-                    gallery_details_type.setText(title)
+                GalleryDialogTagsBinding.inflate(layoutInflater, contents, true).apply {
+                    type.setText(title)
 
                     content.forEach { tag ->
-                        gallery_details_tags.addView(
+                        tags.addView(
                             TagChip(context, tag).apply {
                                 setOnClickListener {
                                     onChipClickedHandler.forEach { handler ->
@@ -180,42 +176,34 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
                             }
                         )
                     }
-                }.let {
-                    gallery_details_contents.addView(it)
                 }
             }
-        }.let {
-            gallery_contents.addView(it)
         }
     }
 
     private fun addThumbnails(gallery: Gallery) {
-        val inflater = LayoutInflater.from(context)
-
-        inflater.inflate(R.layout.dialog_gallery_details, gallery_contents, false).apply {
-            gallery_details.setText(R.string.gallery_thumbnails)
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_thumbnails)
 
             val pager = ViewPager2(context).apply {
                 adapter = ThumbnailPageAdapter(gallery.thumbnails)
                 layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
             }
 
-            gallery_details_contents.addView(
+            contents.addView(
                 pager,
                 LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
             )
 
-            LayoutInflater.from(context).inflate(R.layout.dialog_gallery_dotindicator, gallery_details_contents)
-
-            gallery_dotindicator.setViewPager2(pager)
-        }.let {
-            gallery_contents.addView(it)
+            // TODO: Change to direct allocation
+            GalleryDialogDotindicatorBinding.inflate(layoutInflater, contents, true).apply {
+                dotindicator.setViewPager2(pager)
+            }
         }
     }
 
     private fun addRelated(gallery: Gallery) {
-        val inflater = LayoutInflater.from(context)
-        val galleries = ArrayList<Int>()
+        val galleries = mutableListOf<Int>()
 
         val adapter = GalleryBlockAdapter(galleries).apply {
             onChipClickedHandler.add { tag ->
@@ -225,10 +213,10 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
             }
         }
 
-        inflater.inflate(R.layout.dialog_gallery_details, gallery_contents, false).apply {
-            gallery_details.setText(R.string.gallery_related)
+        GalleryDialogDetailsBinding.inflate(layoutInflater, binding.contents, true).apply {
+            type.setText(R.string.gallery_related)
 
-            RecyclerView(context).apply {
+            contents.addView(RecyclerView(context).apply {
                 layoutManager = LinearLayoutManager(context)
                 this.adapter = adapter
 
@@ -248,22 +236,18 @@ class GalleryDialog(context: Context, private val galleryID: Int) : AlertDialog(
                         true
                     }
                 }
-            }.let {
-                gallery_details_contents.addView(it, LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT))
-            }
-        }.let {
-            gallery_contents.addView(it)
-        }
+            })
 
-        CoroutineScope(Dispatchers.IO).launch {
-            gallery.related.forEach { galleryID ->
-                Cache.getInstance(context, galleryID).getGalleryBlock()?.let {
-                    galleries.add(galleryID)
+            CoroutineScope(Dispatchers.IO).launch {
+                gallery.related.forEach { galleryID ->
+                    Cache.getInstance(context, galleryID).getGalleryBlock()?.let {
+                        galleries.add(galleryID)
+                    }
                 }
-            }
 
-            withContext(Dispatchers.Main) {
-                adapter.notifyDataSetChanged()
+                withContext(Dispatchers.Main) {
+                    adapter.notifyDataSetChanged()
+                }
             }
         }
     }

app/src/main/java/xyz/quaver/pupil/ui/dialog/MirrorDialog.kt

@@ -1,91 +0,0 @@
-/*
- *     Pupil, Hitomi.la viewer for Android
- *     Copyright (C) 2020  tom5079
- *
- *     This program is free software: you can redistribute it and/or modify
- *     it under the terms of the GNU General Public License as published by
- *     the Free Software Foundation, either version 3 of the License, or
- *     (at your option) any later version.
- *
- *     This program is distributed in the hope that it will be useful,
- *     but WITHOUT ANY WARRANTY; without even the implied warranty of
- *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *     GNU General Public License for more details.
- *
- *     You should have received a copy of the GNU General Public License
- *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package xyz.quaver.pupil.ui.dialog
-
-import android.annotation.SuppressLint
-import android.app.Dialog
-import android.content.Context
-import android.os.Bundle
-import android.view.View
-import androidx.appcompat.app.AlertDialog
-import androidx.recyclerview.widget.DividerItemDecoration
-import androidx.recyclerview.widget.ItemTouchHelper
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
-import xyz.quaver.pupil.R
-import xyz.quaver.pupil.adapters.MirrorAdapter
-import xyz.quaver.pupil.util.Preferences
-
-class MirrorDialog(context: Context) : AlertDialog(context) {
-
-    class ItemTouchHelperCallback : ItemTouchHelper.Callback() {
-
-        var onMoveItem : ((Int, Int) -> (Unit))? = null
-
-        override fun getMovementFlags(
-            recyclerView: RecyclerView,
-            viewHolder: RecyclerView.ViewHolder
-        ) = makeMovementFlags(ItemTouchHelper.UP or ItemTouchHelper.DOWN, 0)
-
-        override fun onMove(
-            recyclerView: RecyclerView,
-            viewHolder: RecyclerView.ViewHolder,
-            target: RecyclerView.ViewHolder
-        ): Boolean {
-            onMoveItem?.invoke(viewHolder.adapterPosition, target.adapterPosition)
-            return true
-        }
-
-        override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
-
-        }
-    }
-
-    @SuppressLint("InflateParams")
-    override fun onCreate(savedInstanceState: Bundle?) {
-        setTitle(R.string.settings_mirror_title)
-        setView(build())
-        setButton(Dialog.BUTTON_POSITIVE, context.getString(android.R.string.ok)) { _, _ -> }
-
-        super.onCreate(savedInstanceState)
-    }
-
-    private fun build() : View {
-        return RecyclerView(context).apply recyclerview@{
-            addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
-            layoutManager = LinearLayoutManager(context)
-            adapter = MirrorAdapter(context).apply adapter@{
-                val itemTouchHelper = ItemTouchHelper(ItemTouchHelperCallback().apply {
-                    onMoveItem = this@adapter.onItemMove
-                }).apply {
-                    attachToRecyclerView(this@recyclerview)
-                }
-
-                onStartDrag = {
-                    itemTouchHelper.startDrag(it)
-                }
-
-                onItemMoved = {
-                    Preferences["mirrors"] = it.joinToString(">")
-                }
-            }
-        }
-    }
-
-}

app/src/main/java/xyz/quaver/pupil/ui/dialog/ProxyDialogFragment.kt

@@ -18,58 +18,60 @@
 
 package xyz.quaver.pupil.ui.dialog
 
-import android.annotation.SuppressLint
 import android.app.Dialog
 import android.content.Context
 import android.os.Bundle
-import android.view.LayoutInflater
 import android.view.View
-import android.view.ViewGroup
 import android.widget.AdapterView
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AlertDialog
-import kotlinx.android.synthetic.main.dialog_proxy.view.*
+import androidx.fragment.app.DialogFragment
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.clientBuilder
 import xyz.quaver.pupil.clientHolder
+import xyz.quaver.pupil.databinding.ProxyDialogBinding
 import xyz.quaver.pupil.util.Preferences
 import xyz.quaver.pupil.util.ProxyInfo
 import xyz.quaver.pupil.util.getProxyInfo
 import xyz.quaver.pupil.util.proxyInfo
 import java.net.Proxy
 
-class ProxyDialog(context: Context) : AlertDialog(context) {
+class ProxyDialogFragment : DialogFragment() {
 
-    override fun onCreate(savedInstanceState: Bundle?) {
-        setView(build())
+    private var _binding: ProxyDialogBinding? = null
+    private val binding get() = _binding!!
 
-        super.onCreate(savedInstanceState)
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        _binding = ProxyDialogBinding.inflate(layoutInflater)
+
+        initView()
+
+        return AlertDialog.Builder(requireContext()).apply {
+            setView(binding.root)
+        }.create()
     }
 
-    @SuppressLint("InflateParams")
-    private fun build() : View {
+    private fun initView() {
         val proxyInfo = getProxyInfo()
 
-        val view = LayoutInflater.from(context).inflate(R.layout.dialog_proxy, null)
-
         val enabler = { enable: Boolean ->
-            view?.proxy_addr?.isEnabled = enable
-            view?.proxy_port?.isEnabled = enable
-            view?.proxy_username?.isEnabled = enable
-            view?.proxy_password?.isEnabled = enable
+            binding.addr.isEnabled = enable
+            binding.port.isEnabled = enable
+            binding.username.isEnabled = enable
+            binding.password.isEnabled = enable
 
             if (!enable) {
-                view?.proxy_addr?.text = null
-                view?.proxy_port?.text = null
-                view?.proxy_username?.text = null
-                view?.proxy_password?.text = null
+                binding.addr.text = null
+                binding.port.text = null
+                binding.username.text = null
+                binding.password.text = null
             }
         }
 
-        with(view.proxy_type_selector) {
+        with(binding.typeSelector) {
             adapter = ArrayAdapter(
                 context,
                 android.R.layout.simple_spinner_dropdown_item,
@@ -87,29 +89,29 @@ class ProxyDialog(context: Context) : AlertDialog(context) {
             }
         }
 
-        view.proxy_addr.setText(proxyInfo.host)
-        view.proxy_port.setText(proxyInfo.port?.toString())
-        view.proxy_username.setText(proxyInfo.username)
-        view.proxy_password.setText(proxyInfo.password)
+        binding.addr.setText(proxyInfo.host)
+        binding.port.setText(proxyInfo.port?.toString())
+        binding.username.setText(proxyInfo.username)
+        binding.password.setText(proxyInfo.password)
 
         enabler.invoke(proxyInfo.type != Proxy.Type.DIRECT)
 
-        view.proxy_cancel.setOnClickListener {
+        binding.cancelButton.setOnClickListener {
             dismiss()
         }
 
-        view.proxy_ok.setOnClickListener {
-            val type = Proxy.Type.values()[view.proxy_type_selector.selectedItemPosition]
-            val addr = view.proxy_addr.text?.toString()
-            val port = view.proxy_port.text?.toString()?.toIntOrNull()
-            val username = view.proxy_username.text?.toString()
-            val password = view.proxy_password.text?.toString()
+        binding.okButton.setOnClickListener {
+            val type = Proxy.Type.values()[binding.typeSelector.selectedItemPosition]
+            val addr = binding.addr.text?.toString()
+            val port = binding.port.text?.toString()?.toIntOrNull()
+            val username = binding.username.text?.toString()
+            val password = binding.password.text?.toString()
 
             if (type != Proxy.Type.DIRECT) {
                 if (addr == null || addr.isEmpty())
-                    view.proxy_addr.error = context.getText(R.string.proxy_dialog_error)
+                    binding.addr.error = requireContext().getText(R.string.proxy_dialog_error)
                 if (port == null)
-                    view.proxy_port.error = context.getText(R.string.proxy_dialog_error)
+                    binding.port.error = requireContext().getText(R.string.proxy_dialog_error)
 
                 if (addr == null || addr.isEmpty() || port == null)
                     return@setOnClickListener
@@ -126,8 +128,6 @@ class ProxyDialog(context: Context) : AlertDialog(context) {
 
             dismiss()
         }
-
-        return view
     }
 
 }

app/src/main/java/xyz/quaver/pupil/ui/fragment/ManageStorageFragment.kt

@@ -94,7 +94,12 @@ class ManageStorageFragment : PreferenceFragmentCompat(), Preference.OnPreferenc
                                 }
 
                                 if (dir.exists())
-                                    dir.listFiles()?.forEach { (it as? FileX)?.deleteRecursively() }
+                                    dir.listFiles()?.forEach {
+                                        when (it) {
+                                            is FileX -> it.deleteRecursively()
+                                            else -> it.deleteRecursively()
+                                        }
+                                    }
 
                                 job = launch {
                                     var size = 0L

app/src/main/java/xyz/quaver/pupil/ui/fragment/PINLockFragment.kt

@@ -24,30 +24,34 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import com.andrognito.pinlockview.PinLockListener
-import kotlinx.android.synthetic.main.fragment_pin_lock.view.*
-import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.PinLockFragmentBinding
 
-class PINLockFragment : Fragment(), PinLockListener {
+class PINLockFragment : Fragment() {
+
+    private var _binding: PinLockFragmentBinding? = null
+    val binding get() = _binding!!
 
     var onPINEntered: ((String) -> Unit)? = null
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_pin_lock, container, false).apply {
-            pin_lock_view.attachIndicatorDots(indicator_dots)
-            pin_lock_view.setPinLockListener(this@PINLockFragment)
-        }
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        _binding = PinLockFragmentBinding.inflate(inflater, container, false)
+
+        binding.pinLockView.attachIndicatorDots(binding.indicatorDots)
+        binding.pinLockView.setPinLockListener(object: PinLockListener {
+            override fun onComplete(p0: String?) {
+                onPINEntered?.invoke(p0 ?: "")
+            }
+
+            override fun onEmpty() {}
+            override fun onPinChange(p0: Int, p1: String?) {}
+        })
+
+        return binding.root
     }
 
-    override fun onComplete(pin: String?) {
-        onPINEntered?.invoke(pin!!)
-    }
-
-    override fun onEmpty() {
-
-    }
-
-    override fun onPinChange(pinLength: Int, intermediatePin: String?) {
-
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
     }
 
 }

app/src/main/java/xyz/quaver/pupil/ui/fragment/PatternLockFragment.kt

@@ -26,38 +26,36 @@ import androidx.fragment.app.Fragment
 import com.andrognito.patternlockview.PatternLockView
 import com.andrognito.patternlockview.listener.PatternLockViewListener
 import com.andrognito.patternlockview.utils.PatternLockUtils
-import kotlinx.android.synthetic.main.fragment_pattern_lock.*
-import kotlinx.android.synthetic.main.fragment_pattern_lock.view.*
-import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.PatternLockFragmentBinding
 
-class PatternLockFragment : Fragment(), PatternLockViewListener {
+class PatternLockFragment : Fragment() {
+
+    private var _binding: PatternLockFragmentBinding? = null
+    val binding get() = _binding!!
 
     var onPatternDrawn: ((String) -> Unit)? = null
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
         savedInstanceState: Bundle?
-    ): View? {
-        return inflater.inflate(R.layout.fragment_pattern_lock, container, false).apply {
-            lock_pattern_view.addPatternLockListener(this@PatternLockFragment)
-        }
+    ): View {
+        _binding = PatternLockFragmentBinding.inflate(inflater, container, false)
+        binding.patternLockView.addPatternLockListener(object: PatternLockViewListener {
+            override fun onComplete(pattern: MutableList<PatternLockView.Dot>?) {
+                val password = PatternLockUtils.patternToMD5(binding.patternLockView, pattern)
+                onPatternDrawn?.invoke(password)
+            }
+
+            override fun onCleared() {}
+            override fun onProgress(progressPattern: MutableList<PatternLockView.Dot>?) {}
+            override fun onStarted() {}
+        })
+        return binding.root
     }
 
-    override fun onCleared() {
-
-    }
-
-    override fun onComplete(pattern: MutableList<PatternLockView.Dot>?) {
-        val password = PatternLockUtils.patternToMD5(lock_pattern_view, pattern)
-        onPatternDrawn?.invoke(password)
-    }
-
-    override fun onProgress(progressPattern: MutableList<PatternLockView.Dot>?) {
-
-    }
-
-    override fun onStarted() {
-
+    override fun onDestroy() {
+        super.onDestroy()
+        _binding = null
     }
 
 }

app/src/main/java/xyz/quaver/pupil/ui/fragment/SettingsFragment.kt

@@ -29,15 +29,20 @@ import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import okhttp3.Dispatcher
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.getChild
 import xyz.quaver.pupil.R
+import xyz.quaver.pupil.client
+import xyz.quaver.pupil.clientBuilder
+import xyz.quaver.pupil.clientHolder
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.ui.SettingsActivity
 import xyz.quaver.pupil.ui.dialog.*
 import xyz.quaver.pupil.util.*
 import xyz.quaver.pupil.util.downloader.DownloadManager
 import java.util.*
+import java.util.concurrent.Executors
 
 class SettingsFragment :
     PreferenceFragmentCompat(),
@@ -85,12 +90,12 @@ class SettingsFragment :
                     DownloadLocationDialogFragment().show(parentFragmentManager, "Download Location Dialog")
                 }
                 "default_query" -> {
-                    DefaultQueryDialog(requireContext()).apply {
+                    DefaultQueryDialog().apply {
                         onPositiveButtonClickListener = { newTags ->
                             Preferences["default_query"] = newTags.toString()
                             summary = newTags.toString()
                         }
-                    }.show()
+                    }.show(parentFragmentManager, "Default Query Dialog")
                 }
                 "app_lock" -> {
                     val intent = Intent(requireContext(), LockActivity::class.java).apply {
@@ -98,13 +103,8 @@ class SettingsFragment :
                     }
                     lockLauncher.launch(intent)
                 }
-                "mirrors" -> {
-                    MirrorDialog(requireContext())
-                        .show()
-                }
                 "proxy" -> {
-                    ProxyDialog(requireContext())
-                        .show()
+                    ProxyDialogFragment().show(parentFragmentManager, "Proxy Dialog")
                 }
                 "user_id" -> {
                     (context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(
@@ -168,6 +168,18 @@ class SettingsFragment :
                 "download_folder_name" -> {
                     summary = Preferences["download_folder_name", "[-id-] -title-"]
                 }
+                "max_concurrent_download" -> {
+                    val newValue = Preferences.get<String>(key).toIntOrNull() ?: 0
+
+                    if (newValue == 0)
+                        clientBuilder.dispatcher(Dispatcher())
+                    else
+                        clientBuilder.dispatcher((Dispatcher(Executors.newFixedThreadPool(newValue))))
+
+                    clientHolder = null
+                    client
+                }
+                else -> return
             }
         }
     }
@@ -247,6 +259,11 @@ class SettingsFragment :
 
                             onPreferenceClickListener = this@SettingsFragment
                         }
+                        "proxy" -> {
+                            summary = getProxyInfo().type.name
+
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
                         "tag_translation" -> {
                             this as ListPreference
 
@@ -268,14 +285,6 @@ class SettingsFragment :
                             onPreferenceChangeListener = this@SettingsFragment
 
                         }
-                        "mirrors" -> {
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
-                        "proxy" -> {
-                            summary = getProxyInfo().type.name
-
-                            onPreferenceClickListener = this@SettingsFragment
-                        }
                         "dark_mode" -> {
                             onPreferenceChangeListener = this@SettingsFragment
                         }

app/src/main/java/xyz/quaver/pupil/ui/view/FloatingSearchView.kt

@@ -22,10 +22,10 @@ import android.content.Context
 import android.graphics.PorterDuff
 import android.graphics.PorterDuffColorFilter
 import android.graphics.drawable.Animatable
-import android.os.Parcelable
 import android.text.Editable
 import android.text.TextWatcher
 import android.util.AttributeSet
+import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.inputmethod.EditorInfo
@@ -38,8 +38,6 @@ import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
 import xyz.quaver.floatingsearchview.FloatingSearchView
 import xyz.quaver.floatingsearchview.suggestions.model.SearchSuggestion
-import xyz.quaver.floatingsearchview.util.MenuPopupHelper
-import xyz.quaver.floatingsearchview.util.view.MenuView
 import xyz.quaver.floatingsearchview.util.view.SearchInputView
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.favoriteTags
@@ -61,8 +59,8 @@ class FloatingSearchView @JvmOverloads constructor(context: Context, attrs: Attr
 
         searchInputView.addTextChangedListener(this)
         onSearchListener = this
-        onBindSuggestionCallback = { a, b, c, d, e ->
-            onBindSuggestion(a, b, c, d, e)
+        onBindSuggestionCallback = { binding, item, itemPosition ->
+            onBindSuggestion(binding.root, binding.leftIcon, binding.body, item, itemPosition)
         }
     }
 
@@ -113,7 +111,7 @@ class FloatingSearchView @JvmOverloads constructor(context: Context, attrs: Attr
     ) {
       when(item) {
             is TagSuggestion -> {
-                val tag = "${item.n}:${item.s.replace(Regex("\\s"), "_")}"
+                val tag = "${item.n}:${item.s}"
 
                 leftIcon?.setImageDrawable(
                     ResourcesCompat.getDrawable(

app/src/main/java/xyz/quaver/pupil/ui/view/MainView.java

@@ -0,0 +1,462 @@
+/*
+ *     Pupil, Hitomi.la viewer for Android
+ *     Copyright (C) 2020  tom5079
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package xyz.quaver.pupil.ui.view;
+
+import android.animation.ValueAnimator;
+import android.content.Context;
+import android.content.res.Configuration;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.os.Vibrator;
+import android.util.AttributeSet;
+import android.util.DisplayMetrics;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatDelegate;
+import androidx.appcompat.content.res.AppCompatResources;
+import androidx.core.content.ContextCompat;
+import androidx.core.view.NestedScrollingChild;
+import androidx.core.view.NestedScrollingChildHelper;
+import androidx.core.view.NestedScrollingParent;
+import androidx.core.view.NestedScrollingParentHelper;
+import androidx.core.view.ViewCompat;
+import androidx.core.widget.TextViewCompat;
+
+import xyz.quaver.pupil.R;
+
+@SuppressWarnings("NullableProblems")
+public class MainView extends ViewGroup implements NestedScrollingChild, NestedScrollingParent {
+
+    private static final int PAGE_TURN_LAYOUT_SIZE = 48;
+    private static final int PAGE_TURN_ANIM_DURATION = 500;
+    private static final int PREV_OFFSET = 64;
+    private static final int RIPPLE_GIVE = 4;
+
+    private final float adjustedPageTurnLayoutSize;
+    private final float adjustedPrevOffset;
+    private final float adjustedRippleGive;
+    
+    final private NestedScrollingParentHelper mNestedScrollingParentHelper;
+    final private NestedScrollingChildHelper mNestedScrollingChildHelper;
+
+    final private Vibrator mVibrator;
+
+    private View mTarget;
+
+    private TextView mPrev;
+    private TextView mNext;
+
+    private final Paint mRipplePaint = new Paint();
+    private final Rect mRippleBound = new Rect();
+
+    private int mRippleSize = 0;
+    private final int mRippleTargetSize;
+    private final ValueAnimator mRippleAnimator = new ValueAnimator();
+
+    private int mCurrentOverScroll = 0;
+
+    private int mCurrentPage = 1;
+    private boolean mShowPrev;
+    private boolean mShowNext;
+
+    private OnPageTurnListener mOnPageTurnListener;
+
+    public MainView(@NonNull Context context) {
+        this(context, null);
+    }
+
+    public MainView(@NonNull Context context, AttributeSet attr) {
+        this(context, attr, 0);
+    }
+
+    public MainView(@NonNull Context context, AttributeSet attr, int defStyle) {
+        super(context, attr, defStyle);
+
+        setWillNotDraw(false);
+
+        DisplayMetrics metrics = getResources().getDisplayMetrics();
+
+        adjustedPageTurnLayoutSize = PAGE_TURN_LAYOUT_SIZE * metrics.density;
+        adjustedPrevOffset = PREV_OFFSET * metrics.density;
+        adjustedRippleGive = RIPPLE_GIVE * metrics.density;
+
+        mRippleTargetSize = metrics.widthPixels;
+
+        mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
+        mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
+
+        mVibrator = (Vibrator) getContext().getSystemService(Context.VIBRATOR_SERVICE);
+
+        mRippleAnimator.addUpdateListener(animation -> {
+            mRippleSize = (int) animation.getAnimatedValue();
+            invalidate();
+        });
+        mRippleAnimator.setDuration(PAGE_TURN_ANIM_DURATION);
+
+        initPageTurnView();
+    }
+
+    public void setCurrentPage(int currentPage, boolean showNext) {
+        mCurrentPage = currentPage;
+
+        mShowPrev = currentPage > 1;
+        mShowNext = showNext;
+
+        mPrev.setText(getContext().getString(R.string.main_move_to_page, mCurrentPage-1));
+        mNext.setText(getContext().getString(R.string.main_move_to_page, mCurrentPage+1));
+    }
+
+    public void setOnPageTurnListener(OnPageTurnListener listener) {
+        mOnPageTurnListener = listener;
+    }
+
+    private void initPageTurnView() {
+        TextView prev = new TextView(getContext());
+        TextView next = new TextView(getContext());
+
+        prev.setGravity(Gravity.CENTER_VERTICAL);
+        next.setGravity(Gravity.CENTER_VERTICAL);
+
+        prev.setCompoundDrawablesWithIntrinsicBounds(R.drawable.navigate_prev, 0, 0, 0);
+        next.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.navigate_next, 0);
+
+        TextViewCompat.setCompoundDrawableTintList(prev, AppCompatResources.getColorStateList(getContext(), R.color.colorAccent));
+        TextViewCompat.setCompoundDrawableTintList(next, AppCompatResources.getColorStateList(getContext(), R.color.colorAccent));
+
+        prev.setVisibility(View.INVISIBLE);
+        next.setVisibility(View.INVISIBLE);
+
+        mPrev = prev;
+        mNext = next;
+
+        addView(mPrev);
+        addView(mNext);
+
+        setCurrentPage(1, false);
+    }
+
+    private void ensureTarget() {
+        if (mTarget == null) {
+            for (int i = 0; i < getChildCount(); i++) {
+                View child = getChildAt(i);
+
+                if (!child.equals(mNext) && !child.equals(mPrev)) {
+                    mTarget = child;
+                    break;
+                }
+            }
+        }
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+        final int width = getMeasuredWidth();
+        final int height = getMeasuredHeight();
+
+        if (getChildCount() == 0)
+            return;
+        if (mTarget == null)
+            ensureTarget();
+        if (mTarget == null)
+            return;
+
+        mTarget.layout(
+            getPaddingLeft(),
+            getPaddingTop(),
+            width - getPaddingRight(),
+            height - getPaddingBottom()
+        );
+
+        final int prevWidth = mPrev.getMeasuredWidth();
+        mPrev.layout(
+            width / 2 - prevWidth / 2,
+            getPaddingTop() + (int) adjustedPrevOffset,
+            width / 2 + prevWidth / 2,
+            getPaddingTop() + (int) adjustedPrevOffset + mPrev.getMeasuredHeight()
+        );
+
+        final int nextWidth = mNext.getMeasuredWidth();
+        mNext.layout(
+            width / 2 - nextWidth / 2,
+            height - getPaddingBottom() - mNext.getMeasuredHeight(),
+            width / 2 + nextWidth / 2,
+            height - getPaddingBottom()
+        );
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        if (mTarget == null)
+            ensureTarget();
+        if (mTarget == null)
+            return;
+
+        mTarget.measure(
+            MeasureSpec.makeMeasureSpec(getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), MeasureSpec.EXACTLY),
+            MeasureSpec.makeMeasureSpec(getMeasuredHeight() - getPaddingTop() - getPaddingBottom(), MeasureSpec.EXACTLY)
+        );
+
+        mPrev.measure(
+            MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST),
+            MeasureSpec.makeMeasureSpec((int) adjustedPageTurnLayoutSize, MeasureSpec.EXACTLY)
+        );
+
+        mNext.measure(
+            MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST),
+            MeasureSpec.makeMeasureSpec((int) adjustedPageTurnLayoutSize, MeasureSpec.EXACTLY)
+        );
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        if (mCurrentOverScroll == 0)
+            return;
+
+        if (mCurrentOverScroll > 0) {
+            mRippleBound.set(
+                getPaddingLeft(),
+                (int) (getPaddingTop() - adjustedRippleGive),
+                getMeasuredWidth() - getPaddingRight(),
+                (int) (getPaddingTop() + adjustedPrevOffset + mPrev.getMeasuredHeight() + adjustedRippleGive)
+            );
+        }
+
+        if (mCurrentOverScroll < 0) {
+            final int height = getMeasuredHeight();
+            mRippleBound.set(
+                getPaddingLeft(),
+                (int) (height - getPaddingBottom() - mNext.getMeasuredHeight() - adjustedRippleGive),
+                getMeasuredWidth() - getPaddingRight(),
+                height - getPaddingBottom()
+            );
+        }
+
+        mRipplePaint.reset();
+        mRipplePaint.setStyle(Paint.Style.FILL);
+
+        int currentNightMode = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+        switch (currentNightMode) {
+            case Configuration.UI_MODE_NIGHT_YES:
+                mRipplePaint.setColor(ContextCompat.getColor(getContext(), R.color.material_light_blue_700));
+                break;
+            case Configuration.UI_MODE_NIGHT_NO:
+                mRipplePaint.setColor(ContextCompat.getColor(getContext(), R.color.material_light_blue_300));
+                break;
+        }
+
+        canvas.drawCircle(
+            (mRippleBound.left + mRippleBound.right) / 2F,
+            mCurrentOverScroll > 0 ? mRippleBound.bottom : mRippleBound.top,
+            mRippleSize,
+            mRipplePaint
+        );
+    }
+
+    private void onOverscroll(int overscroll) {
+        if (mTarget == null)
+            ensureTarget();
+        if (mTarget == null)
+            return;
+
+        mCurrentOverScroll = overscroll;
+
+        if (overscroll > 0) {
+            mPrev.setVisibility(View.VISIBLE);
+            mNext.setVisibility(View.INVISIBLE);
+        } else if (overscroll < 0) {
+            mPrev.setVisibility(View.INVISIBLE);
+            mNext.setVisibility(View.VISIBLE);
+        } else {
+            mPrev.setVisibility(View.INVISIBLE);
+            mNext.setVisibility(View.INVISIBLE);
+        }
+
+        if (Math.abs(overscroll) >= adjustedPageTurnLayoutSize) {
+            if (!mRippleAnimator.isStarted() && mRippleSize != mRippleTargetSize) {
+                mVibrator.vibrate(10);
+
+                mRippleAnimator.setIntValues(mRippleSize, mRippleTargetSize);
+                mRippleAnimator.start();
+            }
+        } else {
+            if (!mRippleAnimator.isStarted() && mRippleSize != 0) {
+                mRippleAnimator.setIntValues(mRippleSize, 0);
+                mRippleAnimator.start();
+            }
+        }
+
+        float clippedOverScrollTop = (overscroll > 0 ? 1 : -1) * Math.min(Math.abs(overscroll), adjustedPageTurnLayoutSize);
+        mTarget.setTranslationY(clippedOverScrollTop);
+    }
+
+    private void onOverscrollEnd(int overscroll) {
+        if (mTarget == null)
+            ensureTarget();
+        if (mTarget == null)
+            return;
+
+        mRippleAnimator.cancel();
+        mRippleAnimator.setIntValues(mRippleSize, 0);
+        mRippleAnimator.start();
+
+        mPrev.setVisibility(View.INVISIBLE);
+        mNext.setVisibility(View.INVISIBLE);
+
+        ViewCompat.animate(mTarget)
+            .setDuration(PAGE_TURN_ANIM_DURATION)
+            .setInterpolator(new DecelerateInterpolator())
+            .translationY(0);
+
+        if (Math.abs(overscroll) > adjustedPageTurnLayoutSize && mOnPageTurnListener != null) {
+            if (overscroll > 0)
+                mOnPageTurnListener.onPrev(mCurrentPage-1);
+            if (overscroll < 0)
+                mOnPageTurnListener.onNext(mCurrentPage+1);
+        }
+    }
+
+    // NestedScrollingParent
+
+    private int mTotalUnconsumed = 0;
+
+    @Override
+    public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
+        return isEnabled() && (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0;
+    }
+
+    @Override
+    public void onNestedScrollAccepted(View child, View target, int axes) {
+        mNestedScrollingParentHelper.onNestedScrollAccepted(child, target, axes);
+        startNestedScroll(axes & ViewCompat.SCROLL_AXIS_VERTICAL);
+
+        mTotalUnconsumed = 0;
+    }
+
+    @Override
+    public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) {
+        if (mTotalUnconsumed != 0 && dy > 0 == mTotalUnconsumed > 0) {
+            if (Math.abs(dy) > Math.abs(mTotalUnconsumed)) {
+                consumed[1] = dy - mTotalUnconsumed;
+                mTotalUnconsumed = 0;
+            } else {
+                mTotalUnconsumed -= dy;
+                consumed[1] = dy;
+            }
+
+            onOverscroll(mTotalUnconsumed);
+        }
+
+        final int[] parentConsumed = new int[2];
+        if (dispatchNestedPreScroll(dx - consumed[0], dy - consumed[1], parentConsumed, null)) {
+            consumed[0] += parentConsumed[0];
+            consumed[1] += parentConsumed[1];
+        }
+    }
+
+    @Override
+    public void onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
+        final int[] mParentOffsetInWindow = new int[2];
+        dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, mParentOffsetInWindow);
+
+        final int dy = dyUnconsumed + mParentOffsetInWindow[1];
+
+        if (mTotalUnconsumed == 0 && ((dy < 0 && !mShowPrev) || (dy > 0 && !mShowNext)))
+            return;
+
+        if (dy != 0) {
+            mTotalUnconsumed -= dy;
+            onOverscroll(mTotalUnconsumed);
+        }
+    }
+
+    @Override
+    public void onStopNestedScroll(View child) {
+        mNestedScrollingParentHelper.onStopNestedScroll(child);
+
+        if (Math.abs(mTotalUnconsumed) > 0) {
+            onOverscrollEnd(mTotalUnconsumed);
+            mTotalUnconsumed = 0;
+        }
+
+        stopNestedScroll();
+    }
+
+    // NestedScrollingChild
+
+    @Override
+    public void setNestedScrollingEnabled(boolean enabled) {
+        mNestedScrollingChildHelper.setNestedScrollingEnabled(enabled);
+    }
+
+    @Override
+    public boolean isNestedScrollingEnabled() {
+        return mNestedScrollingChildHelper.isNestedScrollingEnabled();
+    }
+
+    @Override
+    public boolean startNestedScroll(int axes) {
+        return mNestedScrollingChildHelper.startNestedScroll(axes);
+    }
+
+    @Override
+    public void stopNestedScroll() {
+        mNestedScrollingChildHelper.stopNestedScroll();
+    }
+
+    @Override
+    public boolean hasNestedScrollingParent() {
+        return mNestedScrollingChildHelper.hasNestedScrollingParent();
+    }
+
+    @Override
+    public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, @Nullable int[] offsetInWindow) {
+        return mNestedScrollingChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, offsetInWindow);
+    }
+
+    @Override
+    public boolean dispatchNestedPreScroll(int dx, int dy, @Nullable int[] consumed, @Nullable int[] offsetInWindow) {
+        return mNestedScrollingChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow);
+    }
+
+    @Override
+    public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
+        return mNestedScrollingChildHelper.dispatchNestedFling(velocityX, velocityY, consumed);
+    }
+
+    @Override
+    public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
+        return mNestedScrollingChildHelper.dispatchNestedPreFling(velocityX, velocityY);
+    }
+
+    public interface OnPageTurnListener {
+        void onPrev(int page);
+        void onNext(int page);
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/view/ProgressCard.kt

@@ -0,0 +1,72 @@
+package xyz.quaver.pupil.ui.view
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.cardview.widget.CardView
+import androidx.core.content.ContextCompat
+import androidx.core.graphics.drawable.DrawableCompat
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.ProgressCardViewBinding
+
+class ProgressCard @JvmOverloads constructor(context: Context, attr: AttributeSet? = null, defStyle: Int = R.attr.cardViewStyle) : CardView(context, attr, defStyle) {
+
+    enum class Type {
+        LOADING,
+        CACHE,
+        DOWNLOAD
+    }
+
+    var type: Type = Type.LOADING
+        set(value) {
+            field = value
+
+            when (field) {
+                Type.LOADING -> R.color.colorAccent
+                Type.CACHE -> R.color.material_blue_700
+                Type.DOWNLOAD -> R.color.material_green_a700
+            }.let {
+                val color = ContextCompat.getColor(context, it)
+                DrawableCompat.setTint(binding.progressbar.progressDrawable, color)
+            }
+        }
+
+    var progress: Int
+        get() = binding.progressbar.progress
+        set(value) {
+            binding.progressbar.progress = value
+        }
+    var max: Int
+        get() = binding.progressbar.max
+        set(value) {
+            binding.progressbar.max = value
+
+            binding.progressbar.visibility =
+                if (value == 0)
+                    GONE
+                else
+                    VISIBLE
+        }
+
+    val binding = ProgressCardViewBinding.inflate(LayoutInflater.from(context), this)
+
+    init {
+        binding.content.setOnClickListener {
+            performClick()
+        }
+
+        binding.content.setOnLongClickListener {
+            performLongClick()
+        }
+    }
+
+    override fun addView(child: View?, index: Int, params: ViewGroup.LayoutParams?) {
+        if (childCount == 0)
+            super.addView(child, index, params)
+        else
+            binding.content.addView(child, index, params)
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/view/TagChipGroup.kt

@@ -32,7 +32,7 @@ import xyz.quaver.pupil.types.Tags
 class TagChipGroup @JvmOverloads constructor(context: Context, attr: AttributeSet? = null, attrStyle: Int = R.attr.chipGroupStyle, val tags: Tags = Tags()) : ChipGroup(context, attr, attrStyle), MutableSet<Tag> by tags {
 
     object Defaults {
-        val maxChipSize = 10
+        const val maxChipSize = 10
     }
 
     var maxChipSize: Int = Defaults.maxChipSize
@@ -86,7 +86,7 @@ class TagChipGroup @JvmOverloads constructor(context: Context, attr: AttributeSe
                 addView(it.await())
             }
 
-            if (maxChipSize > 0 && tags.size > maxChipSize && parent == null)
+            if (maxChipSize > 0 && tags.size > maxChipSize)
                 addView(moreView)
         }
     }

app/src/main/java/xyz/quaver/pupil/util/SavedSet.kt

@@ -18,11 +18,13 @@
 
 package xyz.quaver.pupil.util
 
-import kotlinx.serialization.*
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.KSerializer
 import kotlinx.serialization.builtins.ListSerializer
 import kotlinx.serialization.json.Json
+import kotlinx.serialization.serializer
 import java.io.File
-import java.util.*
 
 class SavedSet <T: Any> (private val file: File, private val any: T, private val set: MutableSet<T> = mutableSetOf()) : MutableSet<T> by set {
 
@@ -46,6 +48,8 @@ class SavedSet <T: Any> (private val file: File, private val any: T, private val
             Json.decodeFromString(serializer, file.readText())
         }.onSuccess {
             set.addAll(it)
+        }.onFailure {
+            FirebaseCrashlytics.getInstance().recordException(it)
         }
     }
 
@@ -57,8 +61,6 @@ class SavedSet <T: Any> (private val file: File, private val any: T, private val
 
     @Synchronized
     override fun add(element: T): Boolean {
-        load()
-
         set.remove(element)
 
         return set.add(element).also {
@@ -68,8 +70,6 @@ class SavedSet <T: Any> (private val file: File, private val any: T, private val
 
     @Synchronized
     override fun addAll(elements: Collection<T>): Boolean {
-        load()
-
         set.removeAll(elements)
 
         return set.addAll(elements).also {
@@ -79,8 +79,6 @@ class SavedSet <T: Any> (private val file: File, private val any: T, private val
 
     @Synchronized
     override fun remove(element: T): Boolean {
-        load()
-
         return set.remove(element).also {
             save()
         }

app/src/main/java/xyz/quaver/pupil/util/downloader/Cache.kt

@@ -21,6 +21,7 @@ package xyz.quaver.pupil.util.downloader
 import android.content.Context
 import android.content.ContextWrapper
 import android.net.Uri
+import android.util.Log
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -32,24 +33,64 @@ import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import okhttp3.Request
-import xyz.quaver.Code
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
 import xyz.quaver.io.FileX
 import xyz.quaver.io.util.*
 import xyz.quaver.pupil.client
-import xyz.quaver.pupil.util.Preferences
+import xyz.quaver.pupil.hitomi.GalleryBlock
+import xyz.quaver.pupil.hitomi.GalleryInfo
+import xyz.quaver.pupil.hitomi.getGalleryBlock
+import xyz.quaver.pupil.hitomi.getGalleryInfo
 import java.io.File
 import java.io.IOException
 import java.util.concurrent.ConcurrentHashMap
 
 @Serializable
-data class Metadata(
-    var galleryBlock: GalleryBlock? = null,
-    var reader: Reader? = null,
+data class OldGalleryBlock(
+    val code: String,
+    val id: Int,
+    val galleryUrl: String,
+    val thumbnails: List<String>,
+    val title: String,
+    val artists: List<String>,
+    val series: List<String>,
+    val type: String,
+    val language: String,
+    val relatedTags: List<String>
+)
+
+@Serializable
+data class OldReader(val code: String, val galleryInfo: GalleryInfo)
+
+@Serializable
+data class OldMetadata(
+    var galleryBlock: OldGalleryBlock? = null,
+    var reader: OldReader? = null,
     var imageList: MutableList<String?>? = null
 ) {
-    fun copy(): Metadata = Metadata(galleryBlock, reader, imageList?.let { MutableList(it.size) { i -> it[i] } })
+    fun copy(): OldMetadata = OldMetadata(galleryBlock, reader, imageList?.let { MutableList(it.size) { i -> it[i] } })
+}
+
+@Serializable
+data class Metadata(
+    var galleryBlock: GalleryBlock? = null,
+    var galleryInfo: GalleryInfo? = null,
+    var imageList: MutableList<String?>? = null
+) {
+    constructor(old: OldMetadata) : this(old.galleryBlock?.let { galleryBlock -> GalleryBlock(
+        galleryBlock.id,
+        galleryBlock.galleryUrl,
+        galleryBlock.thumbnails,
+        galleryBlock.title,
+        galleryBlock.artists,
+        galleryBlock.series,
+        galleryBlock.type,
+        galleryBlock.language,
+        galleryBlock.relatedTags) },
+        old.reader?.galleryInfo,
+        old.imageList
+    )
+
+    fun copy(): Metadata = Metadata(galleryBlock, galleryInfo, imageList?.let { MutableList(it.size) { i -> it[i] } })
 }
 
 class Cache private constructor(context: Context, val galleryID: Int) : ContextWrapper(context) {
@@ -74,8 +115,12 @@ class Cache private constructor(context: Context, val galleryID: Int) : ContextW
     }
 
     var metadata = kotlin.runCatching {
-        findFile(".metadata")?.readText()?.let {
-            Json.decodeFromString<Metadata>(it)
+        findFile(".metadata")?.readText()?.let { metadata ->
+            kotlin.runCatching {
+                Json.decodeFromString<Metadata>(metadata)
+            }.getOrElse {
+                Metadata(Json.decodeFromString<OldMetadata>(metadata))
+            }
         }
     }.getOrNull() ?: Metadata()
 
@@ -110,27 +155,13 @@ class Cache private constructor(context: Context, val galleryID: Int) : ContextW
     }
 
     suspend fun getGalleryBlock(): GalleryBlock? {
-        val sources = listOf(
-            { xyz.quaver.hitomi.getGalleryBlock(galleryID) },
-            { xyz.quaver.hiyobi.getGalleryBlock(galleryID) }
-        )
-
         return metadata.galleryBlock
             ?: withContext(Dispatchers.IO) {
-                var galleryBlock: GalleryBlock? = null
-
-                for (source in sources) {
-                    galleryBlock = try {
-                        source.invoke()
-                    } catch (e: Exception) { null }
-
-                    if (galleryBlock != null)
-                        break
-                }
-
-                galleryBlock?.also {
-                    setMetadata { metadata -> metadata.galleryBlock = it }
-                }
+                try {
+                    getGalleryBlock(galleryID).also {
+                        setMetadata { metadata -> metadata.galleryBlock = it }
+                    }
+                } catch (e: Exception) { return@withContext null }
             }
     }
 
@@ -154,41 +185,21 @@ class Cache private constructor(context: Context, val galleryID: Int) : ContextW
                 }.getOrNull()?.uri }
             } } ?: Uri.EMPTY
 
-    suspend fun getReader(): Reader? {
-        val mirrors = Preferences.get<String>("mirrors").let { if (it.isEmpty()) emptyList() else it.split('>') }
+    suspend fun getGalleryInfo(): GalleryInfo? {
 
-        val sources = mapOf(
-            Code.HITOMI to { xyz.quaver.hitomi.getReader(galleryID) },
-            Code.HIYOBI to { xyz.quaver.hiyobi.getReader(galleryID) }
-        ).let {
-            if (mirrors.isNotEmpty())
-                it.toSortedMap{ o1, o2 -> mirrors.indexOf(o1.name) - mirrors.indexOf(o2.name) }
-            else
-                it
-        }
-
-        return metadata.reader
+        return metadata.galleryInfo
             ?: withContext(Dispatchers.IO) {
-                var reader: Reader? = null
+                try {
+                    getGalleryInfo(galleryID).also {
+                        setMetadata { metadata ->
+                            metadata.galleryInfo = it
 
-                for (source in sources) {
-                    reader = try {
-                        source.value.invoke()
-                    } catch (e: Exception) {
-                        null
-                    }
-
-                   if (reader != null)
-                       break
-                }
-
-                reader?.also {
-                    setMetadata { metadata ->
-                        metadata.reader = it
-
-                        if (metadata.imageList == null)
-                            metadata.imageList = MutableList(reader.galleryInfo.files.size) { null }
+                            if (metadata.imageList == null)
+                                metadata.imageList = MutableList(it.files.size) { null }
+                        }
                     }
+                } catch (e: Exception) {
+                    null
                 }
             }
     }

app/src/main/java/xyz/quaver/pupil/util/misc.kt

@@ -19,21 +19,14 @@
 package xyz.quaver.pupil.util
 
 import android.annotation.SuppressLint
-import android.content.Context
-import android.content.Intent
-import android.os.Build
-import androidx.core.content.ContextCompat
-import kotlinx.serialization.json.JsonElement
-import kotlinx.serialization.json.jsonArray
-import kotlinx.serialization.json.jsonObject
+import com.google.firebase.crashlytics.FirebaseCrashlytics
+import kotlinx.serialization.json.*
 import okhttp3.OkHttpClient
 import okhttp3.Request
-import xyz.quaver.Code
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.hitomi.getReferer
-import xyz.quaver.hitomi.imageUrlFromImage
-import xyz.quaver.hiyobi.createImgList
+import xyz.quaver.pupil.hitomi.GalleryBlock
+import xyz.quaver.pupil.hitomi.GalleryInfo
+import xyz.quaver.pupil.hitomi.getReferer
+import xyz.quaver.pupil.hitomi.imageUrlFromImage
 import java.util.*
 import kotlin.collections.ArrayList
 
@@ -43,7 +36,7 @@ fun String.wordCapitalize() : String {
 
     @SuppressLint("DefaultLocale")
     for (word in this.split(" "))
-        result.add(word.capitalize(Locale.US))
+        result.add(word.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.US) else it.toString() })
 
     return result.joinToString(" ")
 }
@@ -105,27 +98,25 @@ fun GalleryBlock.formatDownloadFolderTest(format: String): String =
         }
     }.replace(Regex("""[*\\|"?><:/]"""), "").ellipsize(127)
 
-val Reader.requestBuilders: List<Request.Builder>
-    get() {
-        val galleryID = this.galleryInfo.id ?: 0
-        val lowQuality = Preferences["low_quality", true]
+suspend fun GalleryInfo.getRequestBuilders(): List<Request.Builder> {
+    val galleryID = this.id ?: 0
+    val lowQuality = Preferences["low_quality", true]
 
-        return when(code) {
-            Code.HITOMI -> {
-                this.galleryInfo.files.map {
-                    Request.Builder()
-                        .url(imageUrlFromImage(galleryID, it, !lowQuality))
-                        .header("Referer", getReferer(galleryID))
+    return this.files.map {
+        Request.Builder()
+            .url(
+                runCatching {
+                    imageUrlFromImage(galleryID, it, !lowQuality)
                 }
-            }
-            Code.HIYOBI -> {
-                createImgList(galleryID, this, lowQuality).map {
-                    Request.Builder()
-                        .url(it.path)
+                .onFailure {
+                    FirebaseCrashlytics.getInstance().recordException(it)
                 }
-            }
-        }
+                .getOrDefault("https://a/")
+            )
+            .header("Referer", "https://hitomi.la/")
+            .header("User-Agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36")
     }
+}
 
 fun String.ellipsize(n: Int): String =
     if (this.length > n)
@@ -137,4 +128,11 @@ operator fun JsonElement.get(index: Int) =
     this.jsonArray[index]
 
 operator fun JsonElement.get(tag: String) =
-    this.jsonObject[tag]
+    this.jsonObject[tag]
+
+fun JsonElement.getOrNull(tag: String) = kotlin.runCatching {
+    this.jsonObject.getOrDefault(tag, null)
+}.getOrNull()
+
+val JsonElement.content
+    get() = this.jsonPrimitive.contentOrNull

app/src/main/java/xyz/quaver/pupil/util/update.kt

@@ -18,48 +18,26 @@
 
 package xyz.quaver.pupil.util
 
-import android.annotation.SuppressLint
 import android.app.DownloadManager
-import android.app.PendingIntent
-import android.content.BroadcastReceiver
 import android.content.Context
-import android.content.Intent
-import android.content.IntentFilter
 import android.net.Uri
-import android.util.Base64
 import android.webkit.URLUtil
 import androidx.appcompat.app.AlertDialog
-import androidx.core.app.NotificationCompat
-import androidx.core.app.NotificationManagerCompat
 import androidx.preference.PreferenceManager
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 import kotlinx.serialization.decodeFromString
-import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.*
 import okhttp3.Call
 import okhttp3.Callback
 import okhttp3.Request
 import okhttp3.Response
 import ru.noties.markwon.Markwon
-import xyz.quaver.hitomi.GalleryBlock
-import xyz.quaver.hitomi.Reader
-import xyz.quaver.hitomi.getGalleryBlock
-import xyz.quaver.hitomi.getReader
-import xyz.quaver.io.FileX
-import xyz.quaver.io.util.getChild
-import xyz.quaver.io.util.readText
-import xyz.quaver.io.util.writeBytes
-import xyz.quaver.io.util.writeText
 import xyz.quaver.pupil.BuildConfig
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.client
 import xyz.quaver.pupil.favorites
-import xyz.quaver.pupil.services.DownloadService
-import xyz.quaver.pupil.util.downloader.Cache
-import xyz.quaver.pupil.util.downloader.Metadata
 import java.io.File
 import java.io.IOException
 import java.net.URL
@@ -181,7 +159,7 @@ fun checkUpdate(context: Context, force: Boolean = false) {
                     Preferences["update_download_id"] = it
                 }
             }
-            setNegativeButton(if (force) android.R.string.cancel else R.string.ignore_update) { _, _ ->
+            setNegativeButton(if (force) android.R.string.cancel else R.string.ignore) { _, _ ->
                 if (!force)
                     preferences.edit()
                         .putLong("ignore_update_until", System.currentTimeMillis() + 604800000)
@@ -220,116 +198,4 @@ fun restore(url: String, onFailure: ((Throwable) -> Unit)? = null, onSuccess: ((
             }.onFailure { onFailure?.invoke(it) }
         }
     })
-}
-
-private var job: Job? = null
-private val receiver = object: BroadcastReceiver() {
-    val ACTION_CANCEL = "ACTION_IMPORT_CANCEL"
-    override fun onReceive(context: Context?, intent: Intent?) {
-        context ?: return
-
-        when (intent?.action) {
-            ACTION_CANCEL -> {
-                job?.cancel()
-                NotificationManagerCompat.from(context).cancel(R.id.notification_id_import)
-                context.unregisterReceiver(this)
-            }
-        }
-    }
-}
-@SuppressLint("RestrictedApi")
-fun xyz.quaver.pupil.util.downloader.DownloadManager.migrate() {
-    registerReceiver(receiver, IntentFilter().apply { addAction(receiver.ACTION_CANCEL) })
-
-    val notificationManager = NotificationManagerCompat.from(this)
-    val action = NotificationCompat.Action.Builder(0, getText(android.R.string.cancel),
-        PendingIntent.getBroadcast(this, R.id.notification_import_cancel_action.normalizeID(), Intent(receiver.ACTION_CANCEL), PendingIntent.FLAG_UPDATE_CURRENT)
-    ).build()
-    val notification = NotificationCompat.Builder(this, "import")
-        .setContentTitle(getText(R.string.import_old_galleries_notification))
-        .setProgress(0, 0, true)
-        .addAction(action)
-        .setSmallIcon(R.drawable.ic_notification)
-        .setOngoing(true)
-
-    DownloadService.cancel(this)
-
-    job?.cancel()
-    job = CoroutineScope(Dispatchers.IO).launch {
-        val downloadFolders = downloadFolder.listFiles { folder ->
-            folder.isDirectory && !downloadFolderMap.values.contains(folder.name)
-        }?.map {
-            if (it !is FileX)
-                FileX(this@migrate, it)
-            else
-                it
-        }
-
-        if (downloadFolders.isNullOrEmpty()) return@launch
-
-        downloadFolders.forEachIndexed { index, folder ->
-            notification
-                .setContentText(getString(R.string.import_old_galleries_notification_text, index, downloadFolders.size))
-                .setProgress(index, downloadFolders.size, false)
-            notificationManager.notify(R.id.notification_id_import, notification.build())
-
-            kotlin.runCatching {
-                val metadata = kotlin.runCatching {
-                    folder.getChild(".metadata").readText()?.let { Json.parseToJsonElement(it).jsonObject }
-                }.getOrNull()
-
-                val galleryID = folder.name.toIntOrNull() ?: return@runCatching
-
-                val galleryBlock: GalleryBlock? = kotlin.runCatching {
-                    metadata?.get("galleryBlock")?.let { Json.decodeFromJsonElement<GalleryBlock>(it) }
-                }.getOrNull() ?: getGalleryBlock(galleryID)
-                val reader: Reader? = kotlin.runCatching {
-                    metadata?.get("reader")?.let { Json.decodeFromJsonElement<Reader>(it) }
-                }.getOrNull() ?: getReader(galleryID)
-
-                metadata?.get("thumbnail")?.jsonPrimitive?.contentOrNull?.also { thumbnail ->
-                    val file = folder.getChild(".thumbnail").also {
-                        if (it.exists())
-                            it.delete()
-                        it.createNewFile()
-                    }
-
-                    file.writeBytes(Base64.decode(thumbnail, Base64.DEFAULT))
-                }
-
-                val list: MutableList<String?> =
-                    MutableList(reader!!.galleryInfo.files.size) { null }
-
-                folder.listFiles { file ->
-                    file?.nameWithoutExtension?.let {
-                        Regex("""\d{5}""").matches(it) && it.toIntOrNull() != null
-                    } == true
-                }?.forEach {
-                    list[it.nameWithoutExtension.toInt()] = it.name
-                }
-
-                folder.getChild(".metadata").also { if (it.exists()) it.delete(); it.createNewFile() }.writeText(
-                    Json.encodeToString(Metadata(galleryBlock, reader, list))
-                )
-
-                synchronized(Cache) {
-                    Cache.delete(this@migrate, galleryID)
-                }
-                downloadFolderMap[galleryID] = folder.name
-
-                downloadFolder.getChild(".download").let { if (!it.exists()) it.createNewFile(); it.writeText(Json.encodeToString(downloadFolderMap)) }
-            }
-        }
-
-        notification
-            .setContentText(getText(R.string.import_old_galleries_notification_done))
-            .setProgress(0, 0, false)
-            .setOngoing(false)
-            .mActions.clear()
-        notificationManager.notify(R.id.notification_id_import, notification.build())
-
-        kotlin.runCatching {
-            unregisterReceiver(receiver)
-        }
-    }
 }

app/src/main/res/drawable/navigate_next.xml

@@ -1,3 +1,3 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="24.0" android:viewportHeight="24.0">
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="48dp" android:height="48dp" android:viewportWidth="24.0" android:viewportHeight="24.0">
     <path android:fillColor="#FF000000" android:pathData="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/>
 </vector>

app/src/main/res/drawable/navigate_prev.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="48dp" android:height="48dp" android:viewportWidth="24.0" android:viewportHeight="24.0">
+    <group android:pivotX="12" android:scaleX="-1">
+        <path android:fillColor="#FF000000" android:pathData="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/>
+    </group>
+</vector>

app/src/main/res/layout/activity_main_content.xml

@@ -1,147 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~     Pupil, Hitomi.la viewer for Android
-  ~     Copyright (C) 2020  tom5079
-  ~
-  ~     This program is free software: you can redistribute it and/or modify
-  ~     it under the terms of the GNU General Public License as published by
-  ~     the Free Software Foundation, either version 3 of the License, or
-  ~     (at your option) any later version.
-  ~
-  ~     This program is distributed in the hope that it will be useful,
-  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
-  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  ~     GNU General Public License for more details.
-  ~
-  ~     You should have received a copy of the GNU General Public License
-  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-  -->
-
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".ui.MainActivity">
-
-    <androidx.coordinatorlayout.widget.CoordinatorLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
-
-        <com.google.android.material.appbar.AppBarLayout
-            android:id="@+id/main_appbar_layout"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:background="@android:color/transparent"
-            android:visibility="invisible"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintLeft_toLeftOf="parent">
-
-            <View
-                android:layout_width="match_parent"
-                android:layout_height="64dp"
-                android:visibility="invisible"
-                android:background="@android:color/transparent"
-                app:layout_scrollFlags="scroll|enterAlways"
-                app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
-
-        </com.google.android.material.appbar.AppBarLayout>
-
-        <com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            app:handleDrawable="@drawable/thumb"
-            app:handleHasFixedSize="true"
-            app:handleHeight="72dp"
-            app:handleWidth="24dp"
-            app:disableTrack="true"
-            app:hideHandleAfter="1000"
-            app:trackMarginStart="64dp"
-            app:addLastItemPadding="true"
-            app:popupDrawable="@android:color/transparent">
-
-            <androidx.recyclerview.widget.RecyclerView
-                android:id="@+id/main_recyclerview"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:paddingTop="64dp"
-                android:clipToPadding="false"
-                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
-
-        </com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller>
-
-        <androidx.core.widget.ContentLoadingProgressBar
-            style="?android:attr/progressBarStyle"
-            android:id="@+id/main_progressbar"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:indeterminate="true"/>
-
-        <TextView
-            android:id="@+id/main_noresult"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:gravity="center"
-            android:text="@string/main_no_result"
-            android:linksClickable="true"
-            android:visibility="invisible"/>
-
-        <com.github.clans.fab.FloatingActionMenu
-                android:id="@+id/main_fab"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="bottom|end"
-                android:layout_margin="16dp"
-                app:menu_colorNormal="@color/colorAccent">
-
-            <com.github.clans.fab.FloatingActionButton
-                android:id="@+id/main_fab_cancel"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                app:fab_label="@string/main_fab_cancel"
-                app:fab_size="mini"/>
-
-            <com.github.clans.fab.FloatingActionButton
-                android:id="@+id/main_fab_jump"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                app:fab_label="@string/main_jump_title"
-                app:fab_size="mini"/>
-
-            <com.github.clans.fab.FloatingActionButton
-                android:id="@+id/main_fab_random"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                app:fab_label="@string/main_fab_random"
-                app:fab_size="mini"/>
-
-            <com.github.clans.fab.FloatingActionButton
-                android:id="@+id/main_fab_id"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                app:fab_label="@string/main_open_gallery_by_id"
-                app:fab_size="mini"/>
-
-        </com.github.clans.fab.FloatingActionMenu>
-
-    </androidx.coordinatorlayout.widget.CoordinatorLayout>
-
-    <xyz.quaver.pupil.ui.view.FloatingSearchView
-        android:id="@+id/main_searchview"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        app:searchBarMarginLeft="6dp"
-        app:searchBarMarginRight="6dp"
-        app:searchBarMarginTop="6dp"
-        app:searchHint="@string/search_hint"
-        app:suggestionAnimDuration="250"
-        app:showSearchKey="true"
-        app:leftActionMode="showHamburger"
-        app:menu="@menu/main"
-        app:dismissOnOutsideTouch="true"
-        app:close_search_on_keyboard_dismiss="false"
-        tools:ignore="NewApi" />
-
-</RelativeLayout>

app/src/main/res/layout/default_query_dialog.xml

@@ -28,7 +28,7 @@
         tools:ignore="Autofill"
         android:inputType="text"
         android:hint="@string/settings_default_query"
-        android:id="@+id/default_query_dialog_edittext"
+        android:id="@+id/edittext"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         app:layout_constraintTop_toTopOf="parent"
@@ -36,10 +36,10 @@
         app:layout_constraintEnd_toEndOf="parent"/>
 
     <LinearLayout
-        android:id="@+id/default_query_dialog_language_layout"
+        android:id="@+id/language_layout"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/default_query_dialog_edittext"
+        app:layout_constraintTop_toBottomOf="@id/edittext"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent">
 
@@ -49,14 +49,14 @@
             android:text="@string/default_query_dialog_language"/>
 
         <Spinner
-            android:id="@+id/default_query_dialog_language_selector"
+            android:id="@+id/language_selector"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"/>
 
     </LinearLayout>
 
     <LinearLayout
-        android:id="@+id/default_query_dialog_BL_layout"
+        android:id="@+id/BL_layout"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
@@ -64,7 +64,7 @@
         android:paddingStart="0dp"
         android:paddingEnd="8dp"
         android:paddingRight="8dp"
-        app:layout_constraintTop_toBottomOf="@id/default_query_dialog_language_layout"
+        app:layout_constraintTop_toBottomOf="@id/language_layout"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent">
 
@@ -75,14 +75,14 @@
             android:text="@string/default_query_dialog_filter_BL"/>
 
         <CheckBox
-            android:id="@+id/default_query_dialog_BL_checkbox"
+            android:id="@+id/BL_checkbox"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content" />
 
     </LinearLayout>
 
     <LinearLayout
-        android:id="@+id/default_query_dialog_guro_layout"
+        android:id="@+id/guro_layout"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
@@ -90,7 +90,7 @@
         android:paddingStart="0dp"
         android:paddingEnd="8dp"
         android:paddingRight="8dp"
-        app:layout_constraintTop_toBottomOf="@id/default_query_dialog_BL_layout"
+        app:layout_constraintTop_toBottomOf="@id/BL_layout"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent">
 
@@ -101,7 +101,7 @@
             android:text="@string/default_query_dialog_filter_guro"/>
 
         <CheckBox
-            android:id="@+id/default_query_dialog_guro_checkbox"
+            android:id="@+id/guro_checkbox"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content" />
 
@@ -115,7 +115,7 @@
         android:paddingStart="0dp"
         android:paddingEnd="8dp"
         android:paddingRight="8dp"
-        app:layout_constraintTop_toBottomOf="@id/default_query_dialog_guro_layout"
+        app:layout_constraintTop_toBottomOf="@id/guro_layout"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent">
 
@@ -126,7 +126,7 @@
             android:text="@string/default_query_dialog_filter_loli"/>
 
         <CheckBox
-            android:id="@+id/default_query_dialog_loli_checkbox"
+            android:id="@+id/loli_checkbox"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content" />
 

app/src/main/res/layout/gallery_dialog.xml

@@ -19,14 +19,13 @@
 
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/gallery_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:orientation="vertical">
 
     <com.google.android.material.appbar.AppBarLayout
-        android:id="@+id/gallery_toolbar"
+        android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">
 
@@ -41,34 +40,34 @@
                 android:padding="8dp">
 
                 <com.github.piasy.biv.view.BigImageView
-                    android:id="@+id/gallery_cover"
+                    android:id="@+id/cover"
                     android:layout_width="150dp"
                     android:layout_height="wrap_content"
                     android:adjustViewBounds="true"
                     app:layout_constraintTop_toTopOf="parent"
                     app:layout_constraintBottom_toBottomOf="parent"
                     app:layout_constraintLeft_toLeftOf="parent"
-                    app:layout_constraintRight_toLeftOf="@id/gallery_title"
+                    app:layout_constraintRight_toLeftOf="@id/title"
                     tools:ignore="ContentDescription" />
 
                 <TextView
-                    android:id="@+id/gallery_title"
+                    android:id="@+id/title"
                     style="@style/TextAppearance.AppCompat.Headline"
                     android:layout_width="0dp"
                     android:layout_height="wrap_content"
                     app:layout_constraintTop_toTopOf="parent"
-                    app:layout_constraintLeft_toRightOf="@id/gallery_cover"
+                    app:layout_constraintLeft_toRightOf="@id/cover"
                     app:layout_constraintRight_toRightOf="parent"
                     android:layout_marginLeft="8dp"
                     android:layout_marginStart="8dp"/>
 
                 <TextView
                     style="@style/TextAppearance.AppCompat.Medium"
-                    android:id="@+id/gallery_artist"
+                    android:id="@+id/artist"
                     android:layout_width="0dp"
                     android:layout_height="wrap_content"
-                    app:layout_constraintTop_toBottomOf="@id/gallery_title"
-                    app:layout_constraintLeft_toRightOf="@id/gallery_cover"
+                    app:layout_constraintTop_toBottomOf="@id/title"
+                    app:layout_constraintLeft_toRightOf="@id/cover"
                     app:layout_constraintRight_toRightOf="parent"
                     android:layout_marginLeft="8dp"
                     android:layout_marginStart="8dp"/>
@@ -76,15 +75,15 @@
                 <View
                     android:layout_width="match_parent"
                     android:layout_height="0dp"
-                    app:layout_constraintTop_toBottomOf="@id/gallery_artist"
-                    app:layout_constraintBottom_toTopOf="@id/gallery_type"/>
+                    app:layout_constraintTop_toBottomOf="@id/artist"
+                    app:layout_constraintBottom_toTopOf="@id/type"/>
 
                 <com.google.android.material.chip.Chip
-                    android:id="@+id/gallery_type"
+                    android:id="@+id/type"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     app:layout_constraintBottom_toBottomOf="parent"
-                    app:layout_constraintLeft_toRightOf="@id/gallery_cover"
+                    app:layout_constraintLeft_toRightOf="@id/cover"
                     android:layout_marginLeft="8dp"
                     android:layout_marginStart="8dp"/>
 
@@ -100,7 +99,7 @@
         app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
         <LinearLayout
-            android:id="@+id/gallery_contents"
+            android:id="@+id/contents"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:orientation="vertical"/>
@@ -112,7 +111,7 @@
         android:layout_height="match_parent">
 
         <ProgressBar
-            android:id="@+id/gallery_progressbar"
+            android:id="@+id/progressbar"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:layout_constraintLeft_toLeftOf="parent"
@@ -123,11 +122,11 @@
     </androidx.constraintlayout.widget.ConstraintLayout>
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:id="@+id/gallery_fab"
+        android:id="@+id/fab"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_margin="16dp"
-        app:layout_anchor="@id/gallery_toolbar"
+        app:layout_anchor="@id/toolbar"
         app:layout_anchorGravity="bottom|end"/>
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/gallery_dialog_details.xml

@@ -25,14 +25,14 @@
     android:padding="8dp">
 
     <TextView
-        android:id="@+id/gallery_details"
+        android:id="@+id/type"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         style="@style/TextAppearance.MaterialComponents.Body1"
         android:textColor="@color/colorAccent"/>
 
     <LinearLayout
-        android:id="@+id/gallery_details_contents"
+        android:id="@+id/contents"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="vertical"/>

app/src/main/res/layout/gallery_dialog_dotindicator.xml

@@ -25,7 +25,7 @@
     android:layout_margin="8dp">
 
     <com.tbuonomo.viewpagerdotsindicator.DotsIndicator
-        android:id="@+id/gallery_dotindicator"
+        android:id="@+id/dotindicator"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_centerHorizontal="true"

app/src/main/res/layout/gallery_dialog_tags.xml

@@ -26,13 +26,13 @@
 
     <TextView
         style="@style/TextAppearance.MaterialComponents.Body2"
-        android:id="@+id/gallery_details_type"
+        android:id="@+id/type"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:paddingBottom="8dp"/>
 
     <com.google.android.material.chip.ChipGroup
-        android:id="@+id/gallery_details_tags"
+        android:id="@+id/tags"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         app:chipSpacingVertical="4dp"/>

app/src/main/res/layout/galleryblock_item.xml

@@ -0,0 +1,160 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2019  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<xyz.quaver.pupil.ui.view.ProgressCard
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:id="@+id/galleryblock_card"
+	android:layout_width="match_parent"
+	android:layout_height="wrap_content"
+	android:clipChildren="true"
+	app:cardCornerRadius="4dp"
+	android:layout_marginLeft="8dp"
+	android:layout_marginRight="8dp"
+	app:cardUseCompatPadding="true"
+	tools:ignore="RtlHardcoded">
+
+	<androidx.constraintlayout.widget.ConstraintLayout
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content">
+
+		<com.github.piasy.biv.view.BigImageView
+			android:id="@+id/galleryblock_thumbnail"
+			android:layout_width="150dp"
+			android:layout_height="0dp"
+			android:contentDescription="@string/galleryblock_thumbnail_description"
+			android:adjustViewBounds="true"
+			android:clickable="false"
+			app:layout_constraintHeight_default="spread"
+			app:layout_constraintHeight_min="200dp"
+			app:layout_constraintLeft_toLeftOf="parent"
+			app:layout_constraintTop_toTopOf="parent"
+			app:layout_constraintBottom_toTopOf="@id/barrier"/>
+
+		<TextView
+			style="@style/TextAppearance.AppCompat.Headline"
+			android:id="@+id/galleryblock_title"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginTop="8dp"
+			android:layout_marginLeft="8dp"
+			app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
+			app:layout_constraintRight_toRightOf="parent"
+			app:layout_constraintTop_toTopOf="parent" />
+
+		<TextView
+			style="@style/TextAppearance.AppCompat.Medium"
+			android:id="@+id/galleryblock_artist"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginLeft="8dp"
+			app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
+			app:layout_constraintRight_toRightOf="parent"
+			app:layout_constraintTop_toBottomOf="@id/galleryblock_title" />
+
+		<TextView
+			android:id="@+id/galleryblock_series"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginLeft="8dp"
+			app:layout_constraintTop_toBottomOf="@id/galleryblock_artist"
+			app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
+			app:layout_constraintRight_toRightOf="parent"/>
+
+		<TextView
+			android:id="@+id/galleryblock_type"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_marginLeft="8dp"
+			app:layout_constraintTop_toBottomOf="@id/galleryblock_series"
+			app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail" />
+
+		<TextView
+			android:id="@+id/galleryblock_language"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_marginLeft="8dp"
+			android:layout_marginBottom="8dp"
+			app:layout_constraintTop_toBottomOf="@id/galleryblock_type"
+			app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail" />
+
+		<xyz.quaver.pupil.ui.view.TagChipGroup
+			android:id="@+id/galleryblock_tag_group"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:layout_marginLeft="8dp"
+			android:layout_marginTop="16dp"
+			android:layout_marginBottom="16dp"
+			app:chipSpacing="4dp"
+			app:layout_constraintTop_toBottomOf="@id/galleryblock_language"
+			app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
+			app:layout_constraintRight_toRightOf="parent"/>
+
+		<androidx.constraintlayout.widget.Barrier
+			android:id="@+id/barrier"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			app:barrierDirection="bottom"
+			app:constraint_referenced_ids="galleryblock_thumbnail, galleryblock_tag_group"/>
+
+		<View
+			android:id="@+id/divider"
+			android:layout_width="match_parent"
+			android:layout_height="1dp"
+			android:background="?android:attr/listDivider"
+			app:layout_constraintTop_toBottomOf="@id/barrier"
+			android:layout_margin="8dp"/>
+
+		<TextView
+			android:id="@+id/galleryblock_id"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_margin="8dp"
+			app:layout_constraintTop_toBottomOf="@id/divider"
+			app:layout_constraintBottom_toBottomOf="parent"
+			app:layout_constraintLeft_toLeftOf="parent"/>
+
+		<TextView
+			android:id="@+id/galleryblock_pagecount"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:layout_marginTop="8dp"
+			android:layout_marginBottom="8dp"
+			app:layout_constraintTop_toBottomOf="@id/divider"
+			app:layout_constraintBottom_toBottomOf="parent"
+			app:layout_constraintLeft_toLeftOf="parent"
+			app:layout_constraintRight_toRightOf="parent" />
+
+		<ImageView
+			android:id="@+id/galleryblock_favorite"
+			android:contentDescription="@string/app_name"
+			android:layout_width="32dp"
+			android:layout_height="32dp"
+			android:layout_marginRight="8dp"
+			android:layout_marginTop="8dp"
+			android:layout_marginBottom="8dp"
+			app:srcCompat="@drawable/ic_star_empty"
+			app:layout_constraintTop_toBottomOf="@id/divider"
+			app:layout_constraintBottom_toBottomOf="parent"
+			app:layout_constraintRight_toRightOf="parent" />
+
+	</androidx.constraintlayout.widget.ConstraintLayout>
+
+</xyz.quaver.pupil.ui.view.ProgressCard>

app/src/main/res/layout/item_galleryblock.xml

@@ -1,233 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~     Pupil, Hitomi.la viewer for Android
-  ~     Copyright (C) 2019  tom5079
-  ~
-  ~     This program is free software: you can redistribute it and/or modify
-  ~     it under the terms of the GNU General Public License as published by
-  ~     the Free Software Foundation, either version 3 of the License, or
-  ~     (at your option) any later version.
-  ~
-  ~     This program is distributed in the hope that it will be useful,
-  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
-  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  ~     GNU General Public License for more details.
-  ~
-  ~     You should have received a copy of the GNU General Public License
-  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-  -->
-
-<androidx.cardview.widget.CardView
-	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	android:layout_width="match_parent"
-	android:layout_height="wrap_content"
-	android:layout_margin="8dp"
-	app:cardCornerRadius="8dp"
-	android:clipChildren="true"
-	tools:ignore="RtlHardcoded">
-
-	<com.daimajia.swipe.SwipeLayout
-		android:id="@+id/galleryblock_swipe_layout"
-		android:layout_width="match_parent"
-		android:layout_height="wrap_content"
-		app:drag_edge="right"
-		app:show_mode="pull_out">
-
-		<LinearLayout
-            android:layout_width="wrap_content"
-			android:layout_height="match_parent">
-
-			<TextView
-				android:id="@+id/galleryblock_download"
-				android:layout_width="wrap_content"
-				android:layout_height="match_parent"
-				android:minWidth="70dp"
-				android:padding="8dp"
-				android:gravity="center"
-				android:background="@android:color/holo_blue_dark"
-				android:textColor="@android:color/white"
-				android:text="@string/main_download"
-				android:foreground="?android:attr/selectableItemBackground"
-				android:focusable="true"
-				android:clickable="true"
-				tools:ignore="UnusedAttribute" />
-
-			<TextView
-				android:id="@+id/galleryblock_delete"
-				android:layout_width="wrap_content"
-				android:layout_height="match_parent"
-				android:minWidth="70dp"
-				android:padding="8dp"
-				android:gravity="center"
-				android:background="@android:color/holo_red_dark"
-				android:textColor="@android:color/white"
-				android:text="@string/main_delete"
-				android:foreground="?android:attr/selectableItemBackground"
-				android:focusable="true"
-				android:clickable="true"
-				tools:ignore="UnusedAttribute" />
-
-		</LinearLayout>
-
-		<androidx.constraintlayout.widget.ConstraintLayout
-			android:id="@+id/galleryblock_primary"
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:background="?android:attr/selectableItemBackground"
-			android:focusable="true"
-			android:clickable="true">
-
-			<FrameLayout
-				android:id="@+id/galleryblock_progressbar_layout"
-				android:layout_width="match_parent"
-				android:layout_height="4dp"
-				android:visibility="gone"
-				app:layout_constraintTop_toTopOf="parent">
-
-				<androidx.core.widget.ContentLoadingProgressBar
-					style="?android:attr/progressBarStyleHorizontal"
-					android:id="@+id/galleryblock_progressbar"
-					android:layout_width="match_parent"
-					android:layout_height="wrap_content"
-					android:layout_marginBottom="-4dp"
-					android:layout_marginTop="-4dp"
-					android:progress="50"
-					android:layout_gravity="center_vertical"/>
-
-				<ImageView
-					android:id="@+id/galleryblock_progress_complete"
-					android:layout_width="match_parent"
-					android:layout_height="4dp"
-					android:visibility="invisible"
-					android:scaleType="fitXY"
-					android:contentDescription="@string/reader_imageview_description"
-					app:layout_constraintTop_toTopOf="parent"/>
-
-			</FrameLayout>
-
-			<com.github.piasy.biv.view.BigImageView
-				android:id="@+id/galleryblock_thumbnail"
-				android:layout_width="150dp"
-				android:layout_height="0dp"
-				android:contentDescription="@string/galleryblock_thumbnail_description"
-				android:adjustViewBounds="true"
-				app:layout_constraintHeight_default="spread"
-				app:layout_constraintHeight_min="200dp"
-				app:layout_constraintLeft_toLeftOf="parent"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_progressbar_layout"
-				app:layout_constraintBottom_toTopOf="@id/barrier"/>
-
-			<TextView
-				style="@style/TextAppearance.AppCompat.Headline"
-				android:id="@+id/galleryblock_title"
-				android:layout_width="0dp"
-				android:layout_height="wrap_content"
-				android:layout_marginTop="8dp"
-				android:layout_marginLeft="8dp"
-				app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
-				app:layout_constraintRight_toRightOf="parent"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_progressbar_layout"/>
-
-			<TextView
-				style="@style/TextAppearance.AppCompat.Medium"
-				android:id="@+id/galleryblock_artist"
-				android:layout_width="0dp"
-				android:layout_height="wrap_content"
-				android:layout_marginLeft="8dp"
-				app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
-				app:layout_constraintRight_toRightOf="parent"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_title"/>
-
-			<TextView
-				android:id="@+id/galleryblock_series"
-				android:layout_width="0dp"
-				android:layout_height="wrap_content"
-				android:layout_marginLeft="8dp"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_artist"
-				app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
-				app:layout_constraintRight_toRightOf="parent"/>
-
-			<TextView
-				android:id="@+id/galleryblock_type"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_marginLeft="8dp"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_series"
-				app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail" />
-
-			<TextView
-				android:id="@+id/galleryblock_language"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_marginLeft="8dp"
-				android:layout_marginBottom="8dp"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_type"
-				app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail" />
-
-			<xyz.quaver.pupil.ui.view.TagChipGroup
-				android:id="@+id/galleryblock_tag_group"
-				android:layout_width="0dp"
-				android:layout_height="wrap_content"
-				android:layout_marginLeft="8dp"
-				android:layout_marginTop="16dp"
-				android:layout_marginBottom="16dp"
-				app:chipSpacing="4dp"
-				app:layout_constraintTop_toBottomOf="@id/galleryblock_language"
-				app:layout_constraintLeft_toRightOf="@id/galleryblock_thumbnail"
-				app:layout_constraintRight_toRightOf="parent"/>
-
-			<androidx.constraintlayout.widget.Barrier
-				android:id="@+id/barrier"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				app:barrierDirection="bottom"
-				app:constraint_referenced_ids="galleryblock_thumbnail, galleryblock_tag_group"/>
-
-			<View
-				android:id="@+id/divider"
-				android:layout_width="match_parent"
-				android:layout_height="1dp"
-				android:background="?android:attr/listDivider"
-				app:layout_constraintTop_toBottomOf="@id/barrier"
-				android:layout_margin="8dp"/>
-
-			<TextView
-				android:id="@+id/galleryblock_id"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_margin="8dp"
-				app:layout_constraintTop_toBottomOf="@id/divider"
-				app:layout_constraintBottom_toBottomOf="parent"
-				app:layout_constraintLeft_toLeftOf="parent"/>
-
-			<TextView
-				android:id="@+id/galleryblock_pagecount"
-				android:layout_width="wrap_content"
-				android:layout_height="wrap_content"
-				android:layout_marginTop="8dp"
-				android:layout_marginBottom="8dp"
-				app:layout_constraintTop_toBottomOf="@id/divider"
-				app:layout_constraintBottom_toBottomOf="parent"
-				app:layout_constraintLeft_toLeftOf="parent"
-				app:layout_constraintRight_toRightOf="parent" />
-
-			<ImageView
-				android:id="@+id/galleryblock_favorite"
-				android:contentDescription="@string/app_name"
-				android:layout_width="32dp"
-				android:layout_height="32dp"
-				android:layout_marginRight="8dp"
-				android:layout_marginTop="8dp"
-				android:layout_marginBottom="8dp"
-				app:srcCompat="@drawable/ic_star_empty"
-				app:layout_constraintTop_toBottomOf="@id/divider"
-				app:layout_constraintBottom_toBottomOf="parent"
-				app:layout_constraintRight_toRightOf="parent" />
-
-		</androidx.constraintlayout.widget.ConstraintLayout>
-
-	</com.daimajia.swipe.SwipeLayout>
-
-</androidx.cardview.widget.CardView>

app/src/main/res/layout/item_next.xml

@@ -1,54 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~     Pupil, Hitomi.la viewer for Android
-  ~     Copyright (C) 2019  tom5079
-  ~
-  ~     This program is free software: you can redistribute it and/or modify
-  ~     it under the terms of the GNU General Public License as published by
-  ~     the Free Software Foundation, either version 3 of the License, or
-  ~     (at your option) any later version.
-  ~
-  ~     This program is distributed in the hope that it will be useful,
-  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
-  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  ~     GNU General Public License for more details.
-  ~
-  ~     You should have received a copy of the GNU General Public License
-  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-  -->
-
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:orientation="horizontal"
-    android:gravity="center">
-
-    <View
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"/>
-
-    <ImageView
-        android:id="@+id/icon_next"
-        android:contentDescription="@string/page_indicator_placeholder"
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"
-        app:srcCompat="@drawable/ic_navigate_next_black_24dp"
-        app:tint="@color/colorAccent"
-        android:rotation="180"/>
-
-    <TextView
-        android:id="@+id/text_next"
-        android:layout_width="1dp"
-        android:layout_height="wrap_content"
-        android:maxLines="1"
-        android:ellipsize="end" />
-
-    <View
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"/>
-
-</LinearLayout>

app/src/main/res/layout/item_prev.xml

@@ -1,54 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~     Pupil, Hitomi.la viewer for Android
-  ~     Copyright (C) 2019  tom5079
-  ~
-  ~     This program is free software: you can redistribute it and/or modify
-  ~     it under the terms of the GNU General Public License as published by
-  ~     the Free Software Foundation, either version 3 of the License, or
-  ~     (at your option) any later version.
-  ~
-  ~     This program is distributed in the hope that it will be useful,
-  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
-  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  ~     GNU General Public License for more details.
-  ~
-  ~     You should have received a copy of the GNU General Public License
-  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
-  -->
-
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:orientation="horizontal"
-    android:gravity="center">
-
-    <View
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"/>
-
-    <ImageView
-        android:id="@+id/icon_prev"
-        android:contentDescription="@string/page_indicator_placeholder"
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"
-        app:srcCompat="@drawable/ic_navigate_next_black_24dp"
-        app:tint="@color/colorAccent"
-        android:rotation="180"/>
-
-    <TextView
-        android:id="@+id/text_prev"
-        android:layout_width="1dp"
-        android:layout_height="wrap_content"
-        android:maxLines="1"
-        android:ellipsize="end" />
-
-    <View
-        android:layout_width="0dp"
-        android:layout_height="match_parent"
-        android:layout_weight="1"/>
-
-</LinearLayout>

app/src/main/res/layout/lock_activity.xml

@@ -41,7 +41,7 @@
         app:layout_constraintBottom_toTopOf="@id/lock_button_layout">
 
         <com.google.android.material.floatingactionbutton.FloatingActionButton
-            android:id="@+id/lock_fingerprint"
+            android:id="@+id/fingerprint_btn"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:srcCompat="@drawable/fingerprint"
@@ -64,7 +64,7 @@
         android:gravity="center">
 
         <com.google.android.material.floatingactionbutton.FloatingActionButton
-            android:id="@+id/lock_pattern"
+            android:id="@+id/pattern_btn"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:tint="@null"
@@ -73,7 +73,7 @@
             app:fabSize="mini"/>
 
         <com.google.android.material.floatingactionbutton.FloatingActionButton
-            android:id="@+id/lock_pin"
+            android:id="@+id/pin_btn"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:tint="@null"
@@ -84,7 +84,7 @@
             app:fabSize="mini"/>
 
         <com.google.android.material.floatingactionbutton.FloatingActionButton
-            android:id="@+id/lock_password"
+            android:id="@+id/password_btn"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:tint="@null"

app/src/main/res/layout/main_activity.xml

@@ -21,17 +21,18 @@
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
-	android:id="@+id/main_drawer_layout"
+	android:id="@+id/drawer"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent"
 	tools:openDrawer="start">
 
-	<include layout="@layout/activity_main_content"
+	<include android:id="@+id/contents"
+		layout="@layout/main_activity_content"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"/>
 
 	<com.google.android.material.navigation.NavigationView
-		android:id="@+id/main_nav_view"
+		android:id="@+id/nav_view"
 		android:layout_width="wrap_content"
 		android:layout_height="match_parent"
 		android:layout_gravity="start"

app/src/main/res/layout/main_activity_content.xml

@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~     Pupil, Hitomi.la viewer for Android
+  ~     Copyright (C) 2020  tom5079
+  ~
+  ~     This program is free software: you can redistribute it and/or modify
+  ~     it under the terms of the GNU General Public License as published by
+  ~     the Free Software Foundation, either version 3 of the License, or
+  ~     (at your option) any later version.
+  ~
+  ~     This program is distributed in the hope that it will be useful,
+  ~     but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~     GNU General Public License for more details.
+  ~
+  ~     You should have received a copy of the GNU General Public License
+  ~     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.MainActivity">
+
+    <xyz.quaver.pupil.ui.view.MainView
+        android:id="@+id/view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:handleDrawable="@drawable/thumb"
+            app:handleHasFixedSize="true"
+            app:handleHeight="72dp"
+            app:handleWidth="24dp"
+            app:disableTrack="true"
+            app:hideHandleAfter="1000"
+            app:trackMarginStart="64dp"
+            app:addLastItemPadding="true"
+            app:popupDrawable="@android:color/transparent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/recyclerview"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:paddingTop="64dp"
+                android:clipToPadding="false"
+                app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
+
+        </com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller>
+
+    </xyz.quaver.pupil.ui.view.MainView>
+
+    <androidx.core.widget.ContentLoadingProgressBar
+        style="?android:attr/progressBarStyle"
+        android:id="@+id/progressbar"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:indeterminate="true"/>
+
+    <TextView
+        android:id="@+id/noresult"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:text="@string/main_no_result"
+        android:linksClickable="true"
+        android:visibility="invisible"/>
+
+    <com.github.clans.fab.FloatingActionMenu
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="16dp"
+        app:menu_colorNormal="@color/colorAccent">
+
+        <com.github.clans.fab.FloatingActionButton
+            android:id="@+id/cancel_fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:fab_label="@string/main_fab_cancel"
+            app:fab_size="mini"/>
+
+        <com.github.clans.fab.FloatingActionButton
+            android:id="@+id/jump_fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:fab_label="@string/main_jump_title"
+            app:fab_size="mini"/>
+
+        <com.github.clans.fab.FloatingActionButton
+            android:id="@+id/random_fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:fab_label="@string/main_fab_random"
+            app:fab_size="mini"/>
+
+        <com.github.clans.fab.FloatingActionButton
+            android:id="@+id/id_fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:fab_label="@string/main_open_gallery_by_id"
+            app:fab_size="mini"/>
+
+    </com.github.clans.fab.FloatingActionMenu>
+
+    <xyz.quaver.pupil.ui.view.FloatingSearchView
+        android:id="@+id/searchview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:searchBarMarginLeft="6dp"
+        app:searchBarMarginRight="6dp"
+        app:searchBarMarginTop="6dp"
+        app:searchHint="@string/search_hint"
+        app:suggestionAnimDuration="250"
+        app:showSearchKey="true"
+        app:leftActionMode="showHamburger"
+        app:menu="@menu/main"
+        app:dismissOnOutsideTouch="true"
+        app:close_search_on_keyboard_dismiss="false" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/numberpicker_dialog.xml

@@ -25,7 +25,7 @@
 
     <TextView
         style="?android:textAppearanceLarge"
-        android:id="@+id/dialog_title"
+        android:id="@+id/title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/reader_go_to_page"
@@ -33,20 +33,20 @@
         app:layout_constraintStart_toStartOf="parent"/>
 
     <NumberPicker
-        android:id="@+id/dialog_number_picker"
+        android:id="@+id/number_picker"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/dialog_title"
+        app:layout_constraintTop_toBottomOf="@id/title"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"/>
 
     <Button
-        android:id="@+id/dialog_ok"
+        android:id="@+id/ok_button"
         style="?borderlessButtonStyle"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@android:string/ok"
-        app:layout_constraintTop_toBottomOf="@id/dialog_number_picker"
+        app:layout_constraintTop_toBottomOf="@id/number_picker"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"/>
 

app/src/main/res/layout/pattern_lock_fragment.xml

@@ -25,7 +25,7 @@
     tools:context=".ui.fragment.PatternLockFragment">
 
     <com.andrognito.patternlockview.PatternLockView
-        android:id="@+id/lock_pattern_view"
+        android:id="@+id/pattern_lock_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_gravity="center"

app/src/main/res/layout/progress_card_view.xml

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<merge
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:parentTag="androidx.cardview.widget.CardView">
+
+    <com.daimajia.swipe.SwipeLayout
+        android:id="@+id/swipe_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:drag_edge="right"
+        app:show_mode="pull_out">
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent">
+
+            <TextView
+                android:id="@+id/download"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:minWidth="70dp"
+                android:padding="8dp"
+                android:gravity="center"
+                android:background="@android:color/holo_blue_dark"
+                android:textColor="@android:color/white"
+                android:text="@string/main_download"
+                android:foreground="?android:attr/selectableItemBackground"
+                android:focusable="true"
+                android:clickable="true"
+                tools:ignore="UnusedAttribute" />
+
+            <TextView
+                android:id="@+id/delete"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:minWidth="70dp"
+                android:padding="8dp"
+                android:gravity="center"
+                android:background="@android:color/holo_red_dark"
+                android:textColor="@android:color/white"
+                android:text="@string/main_delete"
+                android:foreground="?android:attr/selectableItemBackground"
+                android:focusable="true"
+                android:clickable="true"
+                tools:ignore="UnusedAttribute" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/content"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:clickable="true"
+            android:focusable="true"
+            android:background="?android:attr/selectableItemBackground"
+            android:orientation="vertical">
+
+            <androidx.core.widget.ContentLoadingProgressBar
+                style="?android:attr/progressBarStyleHorizontal"
+                android:id="@+id/progressbar"
+                android:layout_width="match_parent"
+                android:layout_height="4dp"
+                android:progress="50"
+                app:layout_constraintTop_toTopOf="parent"/>
+
+        </LinearLayout>
+
+    </com.daimajia.swipe.SwipeLayout>
+
+</merge>

app/src/main/res/layout/proxy_dialog.xml

@@ -24,7 +24,7 @@
     android:padding="16dp">
 
     <TextView
-        android:id="@+id/proxy_title"
+        android:id="@+id/title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:paddingBottom="16dp"
@@ -35,46 +35,46 @@
         app:layout_constraintLeft_toLeftOf="parent"/>
 
     <TextView
-        android:id="@+id/proxy_type_text"
+        android:id="@+id/type_text"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/proxy_title"
+        app:layout_constraintTop_toBottomOf="@id/title"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         android:text="@string/proxy_dialog_type"
         android:textAppearance="?android:attr/listSeparatorTextViewStyle"/>
 
     <Spinner
-        android:id="@+id/proxy_type_selector"
+        android:id="@+id/type_selector"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/proxy_type_text"/>
+        app:layout_constraintTop_toBottomOf="@id/type_text"/>
 
     <TextView
-        android:id="@+id/proxy_server_text"
+        android:id="@+id/server_text"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/proxy_type_selector"
+        app:layout_constraintTop_toBottomOf="@id/type_selector"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         android:text="@string/proxy_dialog_server"
         android:textAppearance="?android:attr/listSeparatorTextViewStyle"/>
 
     <LinearLayout
-        android:id="@+id/proxy_address_layout"
+        android:id="@+id/address_layout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/proxy_server_text">
+        app:layout_constraintTop_toBottomOf="@id/server_text">
 
         <androidx.appcompat.widget.AppCompatEditText
-            android:id="@+id/proxy_addr"
+            android:id="@+id/addr"
             android:layout_width="0dp"
             android:layout_weight="2"
             android:layout_height="wrap_content"
             android:hint="@string/proxy_dialog_addr_hint"/>
 
         <androidx.appcompat.widget.AppCompatEditText
-            android:id="@+id/proxy_port"
+            android:id="@+id/port"
             android:layout_width="0dp"
             android:layout_weight="1"
             android:layout_height="wrap_content"
@@ -83,39 +83,39 @@
     </LinearLayout>
 
     <androidx.appcompat.widget.AppCompatEditText
-        android:id="@+id/proxy_username"
+        android:id="@+id/username"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/proxy_address_layout"
+        app:layout_constraintTop_toBottomOf="@id/address_layout"
         android:hint="@string/proxy_dialog_username_hint"
         android:enabled="false"/>
 
     <androidx.appcompat.widget.AppCompatEditText
-        android:id="@+id/proxy_password"
+        android:id="@+id/password"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        app:layout_constraintTop_toBottomOf="@id/proxy_username"
+        app:layout_constraintTop_toBottomOf="@id/username"
         android:hint="@string/proxy_dialog_password_hint"
         android:enabled="false"/>
 
     <Button
-        android:id="@+id/proxy_cancel"
+        android:id="@+id/cancel_button"
         style="?borderlessButtonStyle"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@android:string/cancel"
-        app:layout_constraintTop_toBottomOf="@id/proxy_password"
+        app:layout_constraintTop_toBottomOf="@id/password"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toStartOf="@id/proxy_ok"
-        app:layout_constraintRight_toLeftOf="@id/proxy_ok"/>
+        app:layout_constraintEnd_toStartOf="@id/ok_button"
+        app:layout_constraintRight_toLeftOf="@id/ok_button"/>
 
     <Button
-        android:id="@+id/proxy_ok"
+        android:id="@+id/ok_button"
         style="?borderlessButtonStyle"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@android:string/ok"
-        app:layout_constraintTop_toBottomOf="@id/proxy_password"
+        app:layout_constraintTop_toBottomOf="@id/password"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintRight_toRightOf="parent"/>

app/src/main/res/layout/reader_activity.xml

@@ -18,7 +18,6 @@
   -->
 
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/reader_layout"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
@@ -40,7 +39,7 @@
         app:popupDrawable="@android:color/transparent">
 
         <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/reader_recyclerview"
+            android:id="@+id/recyclerview"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
@@ -56,13 +55,13 @@
         android:layout_margin="8dp"/>
 
     <ProgressBar
-        android:id="@+id/reader_download_progressbar"
+        android:id="@+id/download_progressbar"
         style="@style/Widget.AppCompat.ProgressBar.Horizontal"
         android:layout_width="match_parent"
         android:layout_height="4dp"/>
     
     <com.github.clans.fab.FloatingActionMenu
-        android:id="@+id/reader_fab"
+        android:id="@+id/fab"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|end"
@@ -70,7 +69,7 @@
         app:menu_colorNormal="@color/colorAccent">
 
         <com.github.clans.fab.FloatingActionButton
-            android:id="@+id/reader_fab_download"
+            android:id="@+id/download_fab"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:srcCompat="@drawable/ic_download"
@@ -78,7 +77,7 @@
             app:fab_size="mini"/>
 
         <com.github.clans.fab.FloatingActionButton
-            android:id="@+id/reader_fab_retry"
+            android:id="@+id/retry_fab"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:srcCompat="@drawable/refresh"
@@ -86,7 +85,7 @@
             app:fab_size="mini"/>
 
         <com.github.clans.fab.FloatingActionButton
-            android:id="@+id/reader_fab_auto"
+            android:id="@+id/auto_fab"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:srcCompat="@drawable/eye_white"
@@ -94,7 +93,7 @@
             app:fab_size="mini"/>
 
         <com.github.clans.fab.FloatingActionButton
-            android:id="@+id/reader_fab_fullscreen"
+            android:id="@+id/fullscreen_fab"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:srcCompat="@drawable/ic_fullscreen"

app/src/main/res/layout/swipe_pageturn_view.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:parentTag="android.widget.FrameLayout">
+
+    <TextView
+        android:id="@+id/prev"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="top|center"
+        android:maxLines="1"
+        android:ellipsize="end"
+        app:drawableStartCompat="@drawable/navigate_prev"
+        app:drawableLeftCompat="@drawable/navigate_prev"
+        app:drawableTint="@color/colorAccent" />
+
+    <TextView
+        android:id="@+id/next"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|center"
+        android:maxLines="1"
+        android:ellipsize="end"
+        app:drawableEndCompat="@drawable/navigate_next"
+        app:drawableRightCompat="@drawable/navigate_next"
+        app:drawableTint="@color/colorAccent" />
+
+</merge>

app/src/main/res/values-ja/strings.xml

@@ -48,7 +48,7 @@
     <string name="main_jump_title">ページ移動</string>
     <string name="main_jump_message">現ページ番号: %1$d\nページ数: %2$d</string>
     <string name="unable_to_connect">hitomi.laに接続できません</string>
-    <string name="main_move">%1$dページへ移動</string>
+    <string name="main_move_to_page">%1$dページへ移動</string>
     <string name="settings_clear_downloads">ダウンロード削除</string>
     <string name="settings_clear_downloads_alert_message">ダウンロードしたギャラリーを全て削除します。\n実行しますか？</string>
     <string name="settings_mirror_summary">ミラーサーバからイメージをロード</string>
@@ -73,7 +73,7 @@
     <string name="main_menu_sort">ソート</string>
     <string name="main_menu_sort_newest">投稿日時順</string>
     <string name="main_menu_sort_popular">人気順</string>
-    <string name="ignore_update">無視</string>
+    <string name="ignore">無視</string>
     <string name="lock_corrupted">ロックファイルが破損されています。Pupilを再再インストールしてください。</string>
     <string name="settings_dark_mode_title">ダークモード</string>
     <string name="settings_dark_mode_summary">夜にシコりたい方々へ</string>
@@ -151,8 +151,10 @@
     <string name="no_camera">この機器には前面カメラが装着されていません</string>
     <string name="error">エラー</string>
     <string name="settings_cache_limit">キャッシュサイズ制限</string>
-    <string name="settings_cache_unlimited">制限なし</string>
+    <string name="unlimited">制限なし</string>
     <string name="settings_tag_translation">タグ言語</string>
     <string name="settings_tag_translation_message">Githubにて翻訳に参加できます</string>
-    <string name="settings_concurrent_download">並列ダウンロード</string>
+    <string name="settings_max_concurrent_download">並列ダウンロード</string>
+    <string name="unaccessible_download_folder">アンドロイド11以上では外部からのアプリ内部空間接近が不可能です。ダウンロードフォルダを変更しますか？</string>
+    <string name="settings_networking">ネットワーク</string>
 </resources>

app/src/main/res/values-ko/strings.xml

@@ -47,7 +47,7 @@
     <string name="main_jump_title">페이지 이동</string>
     <string name="main_jump_message">현재 페이지: %1$d\n페이지 수: %2$d</string>
     <string name="unable_to_connect">hitomi.la에 연결할 수 없습니다</string>
-    <string name="main_move">%1$d 페이지로 이동</string>
+    <string name="main_move_to_page">%1$d 페이지로 이동</string>
     <string name="settings_clear_downloads">다운로드 삭제</string>
     <string name="settings_clear_downloads_alert_message">다운로드 된 만화를 모두 삭제합니다.\n계속하시겠습니까?</string>
     <string name="main_drawer_favorite">즐겨찾기</string>
@@ -71,7 +71,7 @@
     <string name="main_menu_sort">정렬</string>
     <string name="main_menu_sort_popular">인기순</string>
     <string name="main_menu_sort_newest">시간순</string>
-    <string name="ignore_update">무시</string>
+    <string name="ignore">무시</string>
     <string name="lock_corrupted">잠금 파일이 손상되었습니다! 앱을 재설치 해 주시기 바랍니다.</string>
     <string name="settings_dark_mode_title">다크 모드</string>
     <string name="settings_dark_mode_summary">딥 다크한 모오드</string>
@@ -151,8 +151,10 @@
     <string name="no_camera">이 장치에는 전면 카메라가 없습니다</string>
     <string name="error">오류</string>
     <string name="settings_cache_limit">캐시 크기 제한</string>
-    <string name="settings_cache_unlimited">무제한</string>
+    <string name="unlimited">무제한</string>
     <string name="settings_tag_translation">태그 언어</string>
     <string name="settings_tag_translation_message">Github에서 번역에 참여하세요</string>
-    <string name="settings_concurrent_download">병렬 다운로드</string>
+    <string name="settings_max_concurrent_download">병렬 다운로드</string>
+    <string name="unaccessible_download_folder">안드로이드 11 이상에서는 외부에서 현재 다운로드 폴더에 접근할 수 없습니다. 변경하시겠습니까?</string>
+    <string name="settings_networking">네트워크</string>
 </resources>

app/src/main/res/values/arrays.xml

@@ -48,11 +48,6 @@
         <item>japanese|日本語</item>
     </string-array>
 
-    <string-array name="mirrors">
-        <item>HITOMI|hitomi.la</item>
-        <item>HIYOBI|hiyobi.me</item>
-    </string-array>
-
     <string-array name="proxy_type">
         <item>Direct</item>
         <item>HTTP</item>
@@ -70,7 +65,7 @@
     </string-array>
 
     <string-array name="cache_size_text">
-        <item>@string/settings_cache_unlimited</item>
+        <item>@string/unlimited</item>
         <item>1G</item>
         <item>2G</item>
         <item>4G</item>
@@ -79,4 +74,24 @@
         <item>32G</item>
     </string-array>
 
+    <string-array name="concurrent_download">
+        <item>0</item>
+        <item>1</item>
+        <item>2</item>
+        <item>4</item>
+        <item>8</item>
+        <item>16</item>
+        <item>32</item>
+    </string-array>
+
+    <string-array name="concurrent_download_text">
+        <item>@string/unlimited</item>
+        <item>1</item>
+        <item>2</item>
+        <item>4</item>
+        <item>8</item>
+        <item>16</item>
+        <item>32</item>
+    </string-array>
+
 </resources>

app/src/main/res/values/attrs.xml

@@ -21,4 +21,11 @@
     <declare-styleable name="TagChipGroup">
         <attr name="maxTag" format="integer"/>
     </declare-styleable>
+
+    <declare-styleable name="RippleCircleStatus">
+        <attr name="half" format="enum">
+            <enum name="top" value="1"/>
+            <enum name="bottom" value="-1"/>
+        </attr>
+    </declare-styleable>
 </resources>

app/src/main/res/values/colors.xml

@@ -4,6 +4,8 @@
     <color name="colorPrimaryDark">#0093c4</color>
     <color name="colorAccent">#D81B60</color>
 
+    <color name="material_light_blue_300">#4fc3f7</color>
+    <color name="material_light_blue_700">#0288d1</color>
     <color name="material_pink_600">#d81b60</color>
     <color name="material_blue_700">#1976d2</color>
     <color name="material_green_a700">#00c853</color>

app/src/main/res/values/strings.xml

@@ -28,7 +28,9 @@
     <string name="warning">Warning</string>
     <string name="error">Error</string>
 
-    <string name="ignore_update">Ignore</string>
+    <string name="ignore">Ignore</string>
+
+    <string name="unlimited">Unlimited</string>
 
     <string name="copied_to_clipboard">Copied to clipboard</string>
 
@@ -47,6 +49,8 @@
 
     <string name="main_no_result">No result</string>
 
+    <string name="unaccessible_download_folder">From Android 11 and above, current Download folder cannot be accessed by outside apps. Would you like to change the download folder?</string>
+
     <string name="main_drawer_home">Home</string>
     <string name="main_drawer_history">History</string>
     <string name="main_drawer_downloads">Downloads</string>
@@ -71,7 +75,7 @@
     <string name="main_fab_random">Open a random gallery</string>
     <string name="main_fab_cancel">Cancel all downloads</string>
 
-    <string name="main_move">Move to page %1$d</string>
+    <string name="main_move_to_page">Move to page %1$d</string>
 
     <string name="main_download">DOWNLOAD</string>
     <string name="main_delete">DELETE</string>
@@ -164,7 +168,6 @@
     <string name="settings_download_folder_custom">Custom Location</string>
     <string name="settings_download_folder_not_writable">This folder is not writable. Please select another folder.</string>
     <string name="settings_cache_limit">Cache Limit</string>
-    <string name="settings_cache_unlimited">Unlimited</string>
     <string name="settings_nomedia_title">Hide image from gallery</string>
     <string name="settings_low_quality">Low quality images</string>
     <string name="settings_low_quality_summary">Load low quality images to improve load speed and data usage</string>
@@ -174,14 +177,17 @@
     <string name="settings_app_lock">App lock</string>
     <string name="settings_app_lock_type">App lock type</string>
 
+    <!-- SETTINGS/NETWORKING -->
+    <string name="settings_networking">Networking</string>
+    <string name="settings_mirror_summary">Load images from mirrors</string>
+    <string name="settings_proxy_title">Proxy</string>
+    <string name="settings_max_concurrent_download">Concurrent Download</string>
+
     <!-- SETTINGS/MISCELLANEOUS -->
 
     <string name="settings_miscellaneous_title">Miscellaneous</string>
     <string name="settings_tag_translation">Tag Language</string>
-    <string name="settings_concurrent_download">Concurrent Download</string>
     <string name="settings_tag_translation_message">Participate in translation on Github</string>
-    <string name="settings_mirror_summary">Load images from mirrors</string>
-    <string name="settings_proxy_title">Proxy</string>
     <string name="settings_rtl">Turn pages Right-to-Left</string>
     <string name="settings_security_mode_title">Enable security mode</string>
     <string name="settings_security_mode_summary">Enable security mode to make the screen invisible on recent app window</string>

app/src/main/res/xml/root_preferences.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto">
+<PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
 
     <Preference
         app:key="app_version"
@@ -72,6 +73,23 @@
 
     </PreferenceCategory>
 
+    <PreferenceCategory
+        app:title="@string/settings_networking">
+
+        <Preference
+            app:key="proxy"
+            app:title="@string/settings_proxy_title"/>
+
+        <ListPreference
+            app:key="max_concurrent_download"
+            android:title="@string/settings_max_concurrent_download"
+            app:entries="@array/concurrent_download_text"
+            app:entryValues="@array/concurrent_download"
+            android:defaultValue="0"
+            app:useSimpleSummaryProvider="true"/>
+
+    </PreferenceCategory>
+
     <PreferenceCategory
         app:title="@string/settings_miscellaneous_title">
 
@@ -80,15 +98,6 @@
             app:title="@string/settings_tag_translation"
             app:useSimpleSummaryProvider="true"/>
 
-        <Preference
-            app:key="mirrors"
-            app:title="@string/settings_mirror_title"
-            app:summary="@string/settings_mirror_summary"/>
-
-        <Preference
-            app:key="proxy"
-            app:title="@string/settings_proxy_title"/>
-
         <SwitchPreferenceCompat
             app:key="rtl"
             app:title="@string/settings_rtl"

app/src/test/java/xyz/quaver/pupil/ExampleUnitTest.kt

@@ -26,21 +26,21 @@ package xyz.quaver.pupil
  * See [testing documentation](http://d.android.com/tools/testing).
  */
 
-import kotlinx.serialization.*
-import kotlinx.serialization.json.Json
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import org.junit.Assert.assertEquals
+import org.junit.Before
 import org.junit.Test
+import xyz.quaver.pupil.hitomi.getGalleryInfo
+import xyz.quaver.pupil.hitomi.imageUrlFromImage
 import java.lang.reflect.ParameterizedType
-import kotlin.reflect.KClass
-import kotlin.reflect.KType
-import kotlin.reflect.typeOf
+import java.util.concurrent.TimeUnit
 
 class ExampleUnitTest {
-
     @Test
     fun test() {
         val a = mutableSetOf<Int>()
 
         print(a::class.java.methods.firstOrNull { it.name == "add" }?.genericParameterTypes?.firstOrNull() as? ParameterizedType)
     }
-
 }

build.gradle

@@ -3,29 +3,29 @@
 buildscript {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath 'com.android.tools.build:gradle:7.0.4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
         classpath "org.jetbrains.kotlin:kotlin-serialization:$kotlin_version"
-        classpath "com.google.gms:google-services:4.3.3"
+        classpath "com.google.gms:google-services:4.3.10"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
-        classpath "com.google.firebase:firebase-crashlytics-gradle:2.3.0"
-        classpath "com.google.firebase:perf-plugin:1.3.2"
-        classpath "com.google.android.gms:oss-licenses-plugin:0.10.2"
+        classpath "com.google.firebase:firebase-crashlytics-gradle:2.8.1"
+        classpath "com.google.firebase:perf-plugin:1.4.0"
+        classpath "com.google.android.gms:oss-licenses-plugin:0.10.4"
     }
 }
 
 allprojects {
     repositories {
-        maven { url  "http://dl.bintray.com/piasy/maven" }
         google()
+        mavenCentral()
         jcenter()
         maven { url "https://jitpack.io" }
-        maven { url "https://guardian.github.com/maven/repo-releases" }
+        maven { url "https://guardian.github.io/maven/repo-releases/" }
     }
 }
 

gradle.properties

@@ -20,4 +20,4 @@ kotlin.code.style=official
 android.enableJetifier=true
 android.useAndroidX=true
 
-kotlin_version=1.4.10
+kotlin_version=1.6.10

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip