Ask user to update WebView when es2020 is not supported

.idea/deploymentTargetDropDown.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="deploymentTargetDropDown">
-    <targetSelectedWithDropDown>
+    <runningDeviceTargetSelectedWithDropDown>
       <Target>
-        <type value="QUICK_BOOT_TARGET" />
+        <type value="RUNNING_DEVICE_TARGET" />
         <deviceKey>
           <Key>
             <type value="VIRTUAL_DEVICE_PATH" />
@@ -11,7 +11,7 @@
           </Key>
         </deviceKey>
       </Target>
-    </targetSelectedWithDropDown>
+    </runningDeviceTargetSelectedWithDropDown>
-    <timeTargetWasSelectedWithDropDown value="2022-01-22T00:36:10.057058Z" />
+    <timeTargetWasSelectedWithDropDown value="2022-01-24T19:20:51.436372Z" />
   </component>
 </project>

.idea/misc.xml

@@ -3,6 +3,7 @@
   <component name="DesignSurface">
     <option name="filePathToZoomLevelMap">
       <map>
+        <entry key="../../../../layout/custom_preview.xml" value="0.2564814814814815" />
         <entry key="app/src/main/res/layout/reader_activity.xml" value="0.14351851851851852" />
       </map>
     </option>

app/build.gradle

@@ -38,7 +38,7 @@ android {
         minSdkVersion 16
         targetSdkVersion 31
         versionCode 69
-        versionName "5.2.19"
+        versionName "5.2.20"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }
@@ -91,6 +91,7 @@ dependencies {
     implementation "androidx.gridlayout:gridlayout:1.0.0"
     implementation "androidx.biometric:biometric:1.1.0"
     implementation "androidx.work:work-runtime-ktx:2.7.1"
+    implementation 'androidx.webkit:webkit:1.4.0'
 
     implementation "com.daimajia.swipelayout:library:1.2.0@aar"
 

app/release/output-metadata.json

@@ -12,7 +12,7 @@
       "filters": [],
       "attributes": [],
       "versionCode": 69,
-      "versionName": "5.2.19",
+      "versionName": "5.2.20",
       "outputFile": "app-release.apk"
     }
   ],

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

@@ -29,10 +29,10 @@ 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
+import androidx.webkit.WebViewCompat
 import com.facebook.imagepipeline.backends.okhttp3.OkHttpImagePipelineConfigFactory
 import com.github.piasy.biv.BigImageViewer
 import com.github.piasy.biv.loader.fresco.FrescoImageLoader
@@ -43,6 +43,8 @@ import com.google.firebase.crashlytics.FirebaseCrashlytics
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.json.Json
 import okhttp3.*
 import xyz.quaver.io.FileX
 import xyz.quaver.pupil.hitomi.evaluationContext
@@ -83,6 +85,7 @@ val _webViewFlow = MutableSharedFlow<Pair<String, String?>>()
 val webViewFlow = _webViewFlow.asSharedFlow()
 var webViewReady = false
 var webViewFailed = false
+var oldWebView = false
 private var reloadJob: Job? = null
 
 fun reloadWebView() {
@@ -91,6 +94,7 @@ fun reloadWebView() {
     reloadJob = CoroutineScope(Dispatchers.IO).launch {
         webViewReady = false
         webViewFailed = false
+        oldWebView = false
 
         evaluationContext.cancelChildren(CancellationException("reload"))
 
@@ -156,7 +160,21 @@ fun initWebView(context: Context) {
 
         webViewClient = object: WebViewClient() {
             override fun onPageFinished(view: WebView?, url: String?) {
-                webViewReady = true
+                webView.evaluateJavascript(
+                    """
+                        try {
+                            new Function('(x => x?.y ?? z)');
+                            true;
+                        } catch (err) {
+                            false;
+                        }
+                    """.trimIndent()
+                ) {
+                    val es2020: Boolean = Json.decodeFromString(it)
+
+                    webViewReady = es2020
+                    oldWebView = !es2020
+                }
             }
 
             override fun onReceivedError(

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

@@ -16,6 +16,7 @@
 
 package xyz.quaver.pupil.hitomi
 
+import android.util.Log
 import android.webkit.WebView
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.Flow
@@ -25,10 +26,7 @@ import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
-import xyz.quaver.pupil.webView
+import xyz.quaver.pupil.*
-import xyz.quaver.pupil.webViewFailed
-import xyz.quaver.pupil.webViewFlow
-import xyz.quaver.pupil.webViewReady
 import java.util.*
 import kotlin.coroutines.resume
 import kotlin.coroutines.suspendCoroutine
@@ -55,9 +53,11 @@ suspend inline fun <reified T> WebView.evaluate(script: String): T = coroutineSc
 
     while (result == null) {
         try {
-            result = withContext(evaluationContext) {
+            while (!oldWebView && !(webViewReady && !webViewFailed)) yield()
-                while (webViewFailed || !webViewReady) yield()
 
+            result = if (oldWebView)
+                "null"
+            else withContext(evaluationContext) {
                 suspendCoroutine { continuation ->
                     evaluateJavascript(script) {
                         continuation.resume(it)
@@ -82,9 +82,11 @@ suspend inline fun <reified T> WebView.evaluatePromise(
 
     while (result == null) {
         try {
-            result = withContext(evaluationContext) {
+            while (!oldWebView && !(webViewReady && !webViewFailed)) yield()
-                while (webViewFailed || !webViewReady) yield()
 
+            result = if (oldWebView)
+                "null"
+            else withContext(evaluationContext) {
                 val uid = UUID.randomUUID().toString()
 
                 val flow: Flow<Pair<String, String?>> = webViewFlow.transformWhile { (currentUid, result) ->

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

@@ -19,6 +19,7 @@
 package xyz.quaver.pupil.ui
 
 import android.annotation.SuppressLint
+import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
@@ -37,6 +38,7 @@ import androidx.core.content.ContextCompat
 import androidx.core.view.GravityCompat
 import androidx.core.view.ViewCompat
 import androidx.recyclerview.widget.RecyclerView
+import androidx.webkit.WebViewCompat
 import com.google.android.material.navigation.NavigationView
 import com.google.android.material.snackbar.Snackbar
 import com.google.firebase.crashlytics.FirebaseCrashlytics
@@ -105,6 +107,8 @@ class MainActivity :
 
     private lateinit var binding: MainActivityBinding
 
+    private var oldWebViewJob: Job? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = MainActivityBinding.inflate(layoutInflater)
@@ -125,9 +129,40 @@ class MainActivity :
         if (Preferences["download_folder", ""].isEmpty())
             DownloadLocationDialogFragment().show(supportFragmentManager, "Download Location Dialog")
 
+        oldWebViewJob = CoroutineScope(Dispatchers.Unconfined).launch {
+            do {
+                delay(1000)
+                if (oldWebView) {
+                    AlertDialog.Builder(this@MainActivity)
+                        .setTitle(android.R.string.dialog_alert_title)
+                        .setMessage(R.string.old_webview)
+                        .setCancelable(false)
+                        .setPositiveButton(android.R.string.ok) { _, _ ->
+                            WebViewCompat.getCurrentWebViewPackage(this@MainActivity)?.packageName?.let { packageName ->
+                                try {
+                                    startActivity(
+                                        Intent(
+                                            Intent.ACTION_VIEW,
+                                            Uri.parse("market://details?id=$packageName")
+                                        )
+                                    )
+                                } catch (e: ActivityNotFoundException) {
+                                    startActivity(
+                                        Intent(
+                                            Intent.ACTION_VIEW,
+                                            Uri.parse("https://play.google.com/store/apps/details?id=$packageName")
+                                        )
+                                    )
+                                }
+                            }
+                        }
+                        .show()
+                    break
+                }
+            } while (isActive)
+        }
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R &&
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R && !Preferences["download_folder_ignore_warning", false] &&
-            !Preferences["download_folder_ignore_warning", false] &&
             ContextCompat.getExternalFilesDirs(this, null).filterNotNull().map { Uri.fromFile(it).toString() }
                 .contains(Preferences["download_folder", ""])
         ) {
@@ -169,6 +204,8 @@ class MainActivity :
     override fun onDestroy() {
         super.onDestroy()
 
+        oldWebViewJob?.cancel()
+
         (binding.contents.recyclerview.adapter as? GalleryBlockAdapter)?.updateAll = false
     }
 

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

@@ -157,4 +157,5 @@
     <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>
+    <string name="old_webview">WebViewのアップデートが必要です</string>
 </resources>

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

@@ -157,4 +157,5 @@
     <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>
+    <string name="old_webview">WebView 업데이트가 필요합니다</string>
 </resources>

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

@@ -51,6 +51,8 @@
 
     <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="old_webview">You are using an old version of WebView. Please update it on PlayStore</string>
+
     <string name="main_drawer_home">Home</string>
     <string name="main_drawer_history">History</string>
     <string name="main_drawer_downloads">Downloads</string>