Implemented Source Selector

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

@@ -0,0 +1,70 @@
+<?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.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:padding="8dp">
+
+    <ImageView
+        android:id="@+id/icon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_margin="8dp"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+    <TextView
+        android:id="@+id/name"
+        style="@style/TextAppearance.AppCompat.Button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="16dp"
+        android:layout_marginRight="16dp"
+        app:layout_constraintHorizontal_chainStyle="spread_inside"
+        app:layout_constraintLeft_toRightOf="@id/icon"
+        app:layout_constraintRight_toLeftOf="@id/settings"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"/>
+
+    <ImageButton
+        android:id="@+id/settings"
+        style="@style/Widget.AppCompat.Button.Borderless"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:adjustViewBounds="true"
+        app:srcCompat="@drawable/ic_settings"
+        app:tint="?attr/colorControlNormal"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toRightOf="@id/name"
+        app:layout_constraintRight_toLeftOf="@id/go"/>
+
+    <Button
+        android:id="@+id/go"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="GO!"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintRight_toRightOf="parent"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>