Storage select dialog

app/src/main/java/org/koitharu/kotatsu/ui/common/BaseActivity.kt

@@ -11,6 +11,7 @@ import moxy.MvpAppCompatActivity
 import org.koin.core.KoinComponent
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.ui.common.dialog.StorageSelectDialog
 
 abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 
@@ -68,6 +69,10 @@ abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 			recreate()
 			return true
 		}
+		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
+			StorageSelectDialog.Builder(this).create().show()
+			return true
+		}
 		return super.onKeyDown(keyCode, event)
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/common/dialog/StorageSelectDialog.kt

@@ -0,0 +1,75 @@
+package org.koitharu.kotatsu.ui.common.dialog
+
+import android.content.Context
+import android.content.DialogInterface
+import android.os.Environment
+import android.view.View
+import android.view.ViewGroup
+import android.widget.BaseAdapter
+import androidx.annotation.StringRes
+import androidx.appcompat.app.AlertDialog
+import kotlinx.android.synthetic.main.item_storage.view.*
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.utils.ext.findParent
+import org.koitharu.kotatsu.utils.ext.inflate
+import org.koitharu.kotatsu.utils.ext.longHashCode
+import java.io.File
+
+class StorageSelectDialog private constructor(private val delegate: AlertDialog) :
+	DialogInterface by delegate {
+
+	fun show() = delegate.show()
+
+	class Builder(context: Context) {
+
+		private val delegate = AlertDialog.Builder(context)
+			.setAdapter(VolumesAdapter(context)) { _, _ ->
+
+			}
+
+		fun setTitle(@StringRes titleResId: Int): Builder {
+			delegate.setTitle(titleResId)
+			return this
+		}
+
+		fun setTitle(title: CharSequence): Builder {
+			delegate.setTitle(title)
+			return this
+		}
+
+		fun create() = StorageSelectDialog(delegate.create())
+	}
+
+	private class VolumesAdapter(context: Context): BaseAdapter() {
+
+		private val volumes = getAvailableVolumes(context)
+
+		override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
+			val view = convertView ?: parent.inflate(R.layout.item_storage)
+			val item = volumes[position]
+			view.textView_title.text = item.second
+			view.textView_subtitle.text = item.first.path
+			return view
+		}
+
+		override fun getItem(position: Int): Any = volumes[position]
+
+		override fun getItemId(position: Int) = volumes[position].first.absolutePath.longHashCode()
+
+		override fun getCount() = volumes.size
+
+	}
+
+	private companion object {
+
+		@JvmStatic
+		fun getAvailableVolumes(context: Context): List<Pair<File,String>> = context.getExternalFilesDirs(null).mapNotNull {
+			val root = it.findParent { x -> x.name == "Android" }?.parentFile ?: return@mapNotNull null
+			root to when {
+				Environment.isExternalStorageEmulated(root) -> context.getString(R.string.internal_storage)
+				Environment.isExternalStorageRemovable(root) -> context.getString(R.string.external_storage)
+				else -> root.name
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/utils/ext/FileExt.kt

@@ -18,4 +18,12 @@ fun File.computeSize(): Long = listFiles()?.sumByLong { x ->
 	} else {
 		x.length()
 	}
-} ?: 0L
+} ?: 0L
+
+inline fun File.findParent(predicate: (File) -> Boolean): File? {
+	var current = this
+	while(!predicate(current)) {
+		current = current.parentFile ?: return null
+	}
+	return current
+}

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

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:tools="http://schemas.android.com/tools"
+	android:orientation="vertical"
+	android:layout_width="match_parent"
+	android:minHeight="?listPreferredItemHeightLarge"
+	android:paddingStart="?listPreferredItemPaddingStart"
+	android:paddingEnd="?listPreferredItemPaddingEnd"
+	android:gravity="center_vertical"
+	android:background="?selectableItemBackground"
+	android:layout_height="wrap_content">
+
+	<TextView
+		android:id="@+id/textView_title"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:maxLines="1"
+		android:ellipsize="end"
+		tools:text="@tools:sample/lorem[3]"
+		android:textColor="?android:textColorPrimary"
+		android:textAppearance="@style/TextAppearance.MaterialComponents.Body1" />
+
+	<TextView
+		android:id="@+id/textView_subtitle"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:layout_marginTop="6dp"
+		android:maxLines="1"
+		android:ellipsize="end"
+		android:textColor="?android:textColorSecondary"
+		tools:text="@tools:sample/lorem[3]"
+		android:textAppearance="@style/TextAppearance.MaterialComponents.Body2" />
+
+</LinearLayout>

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

@@ -100,4 +100,6 @@
     <string name="clear_search_history">Очистить историю поиска</string>
     <string name="search_history_cleared">История поиска очищена</string>
 	<string name="gestures_only">Только жесты</string>
+	<string name="internal_storage">Internal storage</string>
+	<string name="external_storage">External storage</string>
 </resources>

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

@@ -101,4 +101,6 @@
     <string name="clear_search_history">Clear search history</string>
     <string name="search_history_cleared">Search history cleared</string>
 	<string name="gestures_only">Gestures only</string>
+	<string name="internal_storage">Internal storage</string>
+	<string name="external_storage">External storage</string>
 </resources>