Fix MangaLib provider

.idea/codeStyles/Project.xml

@@ -23,7 +23,6 @@
       </option>
     </AndroidXmlCodeStyleSettings>
     <JetCodeStyleSettings>
-      <option name="ALLOW_TRAILING_COMMA" value="true" />
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </JetCodeStyleSettings>
     <codeStyleSettings language="CMake">

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,7 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="BooleanLiteralArgument" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
+    <inspection_tool class="TrailingComma" enabled="true" level="INFORMATION" enabled_by_default="true" />
+  </profile>
+</component>

.idea/kotlinc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+</project>

.idea/vcs.xml

@@ -1,5 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GitSharedSettings">
+    <option name="FORCE_PUSH_PROHIBITED_PATTERNS">
+      <list>
+        <option value="master" />
+        <option value="devel" />
+        <option value="legacy" />
+      </list>
+    </option>
+  </component>
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
   </component>

README.md

@@ -2,13 +2,13 @@
 
 Kotatsu is a free and open source manga reader for Android.
 
-![Android minSdk](https://img.shields.io/badge/android-5.0+-brightgreen) ![GitHub top language](https://img.shields.io/github/languages/top/nv95/Kotatsu) [![Build Status](https://travis-ci.org/nv95/Kotatsu.svg?branch=master)](https://travis-ci.org/nv95/Kotatsu) ![License](https://img.shields.io/github/license/nv95/Kotatsu) [![4pda](https://img.shields.io/badge/discuss-4pda-2982CC)](http://4pda.ru/forum/index.php?showtopic=697669)
+![Android 5.0](https://img.shields.io/badge/android-5.0+-brightgreen) ![Kotlin](https://img.shields.io/github/languages/top/nv95/Kotatsu) [![Build Status](https://travis-ci.org/nv95/Kotatsu.svg?branch=master)](https://travis-ci.org/nv95/Kotatsu) ![License](https://img.shields.io/github/license/nv95/Kotatsu) [![4pda](https://img.shields.io/badge/discuss-4pda-2982CC)](http://4pda.ru/forum/index.php?showtopic=697669)
 
 ### Download
 
-Latest unstable build: [get here](https://github.com/nv95/Kotatsu/releases/latest)
+Latest release: [get here](https://github.com/nv95/Kotatsu/releases/latest)
 
-Stable release: _Coming soon_
+Legacy build (Android 4.1+): [available here](https://github.com/nv95/Kotatsu/releases/tag/v0.3-legacy)
 
 ### Main Features
 
@@ -20,16 +20,13 @@ Stable release: _Coming soon_
 * Tablet-optimized modern UI
 * Reading third-party comics from CBZ
 * Standard and Webtoon-optimized reader
-
-### Coming Features
-
-* Checking for new chapters
+* Notifications about new chapters
 
 ### Screenshots
 
-| ![Screenshot_20200226-210337](https://user-images.githubusercontent.com/8948226/75573590-d467f180-5a65-11ea-8338-a34af4679ed6.png) | ![Screenshot_20200226-210310](https://user-images.githubusercontent.com/8948226/75573612-dcc02c80-5a65-11ea-9afb-293dadfb3cfd.png) | ![Screenshot_20200226-210232](https://user-images.githubusercontent.com/8948226/75573621-e0ec4a00-5a65-11ea-92b9-72ab90281a2b.png) |
+| ![Screenshot_20200226-210337](https://user-images.githubusercontent.com/8948226/80315102-3478db00-87fe-11ea-9ce8-4bbd1c254b2b.png) | ![Screenshot_20200226-210310](https://user-images.githubusercontent.com/8948226/80315110-3f337000-87fe-11ea-95df-944c196b6667.png) | ![Screenshot_20200226-210232](https://user-images.githubusercontent.com/8948226/80315121-49ee0500-87fe-11ea-8d9b-537a041bbf2f.png) |
 |---|---|---|
-| ![Screenshot_20200226-210405](https://user-images.githubusercontent.com/8948226/75573629-e34ea400-5a65-11ea-86a1-4496032ac0f0.png)  | ![Screenshot_20200226-210151](https://user-images.githubusercontent.com/8948226/75573632-e5186780-5a65-11ea-81b0-7c296157709c.png) | ![Screenshot_20200226-210223](https://user-images.githubusercontent.com/8948226/75573639-e6e22b00-5a65-11ea-84a6-6257f532fd2c.png) |
+| ![Screenshot_20200226-210405](https://user-images.githubusercontent.com/8948226/80315130-55d9c700-87fe-11ea-8350-2c8452906eb7.png)  | ![Screenshot_20200226-210151](https://user-images.githubusercontent.com/8948226/80315135-612cf280-87fe-11ea-984c-aa18567d5bbc.png) | ![Screenshot_20200226-210223](https://user-images.githubusercontent.com/8948226/80315146-6be78780-87fe-11ea-8439-ca1ca578172b.png) |
 
 ### License
 [![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](http://www.gnu.org/licenses/gpl-3.0.en.html)  

app/build.gradle

@@ -1,7 +1,9 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
-apply plugin: 'kotlin-kapt'
+plugins {
+	id 'com.android.application'
+	id 'kotlin-android'
+	id 'kotlin-android-extensions'
+	id 'kotlin-kapt'
+}
 
 def gitCommits = 'git rev-list --count HEAD'.execute([], rootDir).text.trim().toInteger()
 def gitBranch = 'git branch --show-current'.execute([], rootDir).text.trim()
@@ -15,17 +17,16 @@ android {
 		minSdkVersion 21
 		targetSdkVersion 29
 		versionCode gitCommits
-		versionName '0.2-b1'
+		versionName '0.3.2'
 
 		buildConfigField 'String', 'GIT_BRANCH', "\"${gitBranch}\""
 
 		kapt {
 			arguments {
-				arg('room.schemaLocation', "$projectDir/schemas".toString())
+				arg 'room.schemaLocation', "$projectDir/schemas".toString()
 			}
 		}
 	}
-	archivesBaseName = "kotatsu_${gitCommits}"
 	compileOptions {
 		sourceCompatibility JavaVersion.VERSION_1_8
 		targetCompatibility JavaVersion.VERSION_1_8
@@ -38,6 +39,7 @@ android {
 			applicationIdSuffix = '.debug'
 		}
 		release {
+			multiDexEnabled false
 			minifyEnabled true
 			shrinkResources true
 			proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
@@ -58,19 +60,21 @@ androidExtensions {
 dependencies {
 	implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
 	implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
-	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5'
+	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.5'
 
-	implementation 'androidx.core:core-ktx:1.3.0-beta01'
-	implementation 'androidx.fragment:fragment-ktx:1.2.4'
+	implementation 'androidx.core:core-ktx:1.3.0-rc01'
 	implementation 'androidx.appcompat:appcompat:1.2.0-beta01'
-	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta4'
-	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-beta01'
-	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha02'
+	implementation 'androidx.activity:activity-ktx:1.2.0-alpha04'
+	implementation 'androidx.fragment:fragment-ktx:1.3.0-alpha04'
+	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-alpha02'
+	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta5'
+	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-rc01'
+	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha03'
 	implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
-	implementation 'androidx.preference:preference:1.1.0'
+	implementation 'androidx.preference:preference-ktx:1.1.1'
 	implementation 'androidx.work:work-runtime-ktx:2.3.4'
-	implementation 'com.google.android.material:material:1.2.0-alpha05'
+	implementation 'com.google.android.material:material:1.2.0-alpha06'
 
 	implementation 'androidx.room:room-runtime:2.2.5'
 	implementation 'androidx.room:room-ktx:2.2.5'
@@ -82,18 +86,18 @@ dependencies {
 	implementation 'com.github.moxy-community:moxy-ktx:2.1.2'
 	kapt 'com.github.moxy-community:moxy-compiler:2.1.2'
 
-	implementation 'com.squareup.okhttp3:okhttp:4.5.0'
-	implementation 'com.squareup.okio:okio:2.5.0'
+	implementation 'com.squareup.okhttp3:okhttp:4.6.0'
+	implementation 'com.squareup.okio:okio:2.6.0'
 	implementation 'org.jsoup:jsoup:1.13.1'
 
-	implementation 'org.koin:koin-android:2.1.4'
-	implementation 'io.coil-kt:coil:0.9.5'
+	implementation 'org.koin:koin-android:2.1.5'
+	implementation 'io.coil-kt:coil:0.10.1'
 	implementation 'com.davemorrissey.labs:subsampling-scale-image-view:3.10.0'
 	implementation 'com.tomclaw.cache:cache:1.0'
 
-	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.2'
-	debugImplementation 'com.github.ChuckerTeam.Chucker:library:3.1.2'
-	releaseImplementation 'com.github.ChuckerTeam.Chucker:library-no-op:3.1.2'
+	debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.3'
+	debugImplementation 'com.github.ChuckerTeam.Chucker:library:3.2.0'
+	releaseImplementation 'com.github.ChuckerTeam.Chucker:library-no-op:3.2.0'
 
 	testImplementation 'junit:junit:4.13'
 	testImplementation 'org.json:json:20190722'

app/proguard-rules.pro

@@ -9,4 +9,5 @@
 -keep class org.koitharu.kotatsu.core.db.entity.* { *; }
 -keepclassmembers public class * extends org.koitharu.kotatsu.core.parser.MangaRepository {
 	public <init>(...);
-}
+}
+-dontwarn okhttp3.internal.platform.ConscryptPlatform

app/src/main/AndroidManifest.xml

@@ -46,18 +46,40 @@
 			android:label="@string/settings" />
 		<activity
 			android:name=".ui.reader.SimpleSettingsActivity"
-			android:label="@string/settings" />
+			android:label="@string/settings">
+			<intent-filter>
+				<action android:name="android.intent.action.MANAGE_NETWORK_USAGE" />
+				<category android:name="android.intent.category.DEFAULT" />
+			</intent-filter>
+		</activity>
 		<activity android:name=".ui.browser.BrowserActivity" />
 		<activity
 			android:name=".ui.utils.CrashActivity"
 			android:label="@string/error_occurred"
 			android:theme="@android:style/Theme.DeviceDefault.Dialog"
 			android:windowSoftInputMode="stateAlwaysHidden" />
+		<activity
+			android:name=".ui.main.list.favourites.categories.CategoriesActivity"
+			android:label="@string/favourites_categories"
+			android:windowSoftInputMode="stateAlwaysHidden" />
+		<activity
+			android:name=".ui.widget.shelf.ShelfConfigActivity"
+			android:label="@string/manga_shelf">
+			<intent-filter>
+				<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+			</intent-filter>
+		</activity>
 
 		<service
 			android:name=".ui.download.DownloadService"
 			android:foregroundServiceType="dataSync" />
 		<service android:name=".ui.settings.AppUpdateService" />
+		<service
+			android:name=".ui.widget.shelf.ShelfWidgetService"
+			android:permission="android.permission.BIND_REMOTEVIEWS" />
+		<service
+			android:name=".ui.widget.recent.RecentWidgetService"
+			android:permission="android.permission.BIND_REMOTEVIEWS" />
 
 		<provider
 			android:name=".ui.search.MangaSuggestionsProvider"
@@ -73,6 +95,27 @@
 				android:resource="@xml/filepaths" />
 		</provider>
 
+		<receiver
+			android:name=".ui.widget.shelf.ShelfWidgetProvider"
+			android:label="@string/manga_shelf">
+			<intent-filter>
+				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+			</intent-filter>
+			<meta-data
+				android:name="android.appwidget.provider"
+				android:resource="@xml/widget_shelf" />
+		</receiver>
+		<receiver
+			android:name=".ui.widget.recent.RecentWidgetProvider"
+			android:label="@string/recent_manga">
+			<intent-filter>
+				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+			</intent-filter>
+			<meta-data
+				android:name="android.appwidget.provider"
+				android:resource="@xml/widget_recent" />
+		</receiver>
+
 	</application>
 
 </manifest>

app/src/main/java/org/koitharu/kotatsu/KotatsuApp.kt

@@ -4,7 +4,8 @@ import android.app.Application
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.room.Room
 import coil.Coil
-import coil.ImageLoader
+import coil.ComponentRegistry
+import coil.ImageLoaderBuilder
 import coil.util.CoilUtils
 import com.chuckerteam.chucker.api.ChuckerCollector
 import com.chuckerteam.chucker.api.ChuckerInterceptor
@@ -25,7 +26,10 @@ import org.koitharu.kotatsu.core.local.cookies.persistence.SharedPrefsCookiePers
 import org.koitharu.kotatsu.core.parser.UserAgentInterceptor
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.domain.favourites.FavouritesRepository
+import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.ui.utils.AppCrashHandler
+import org.koitharu.kotatsu.ui.widget.WidgetUpdater
 import org.koitharu.kotatsu.utils.CacheUtils
 import java.util.concurrent.TimeUnit
 
@@ -48,6 +52,9 @@ class KotatsuApp : Application() {
 			initErrorHandler()
 		}
 		AppCompatDelegate.setDefaultNightMode(AppSettings(this).theme)
+		val widgetUpdater = WidgetUpdater(applicationContext)
+		FavouritesRepository.subscribe(widgetUpdater)
+		HistoryRepository.subscribe(widgetUpdater)
 	}
 
 	private fun initKoin() {
@@ -79,16 +86,19 @@ class KotatsuApp : Application() {
 	}
 
 	private fun initCoil() {
-		Coil.setDefaultImageLoader(ImageLoader(applicationContext) {
-			okHttpClient {
-				okHttp()
-					.cache(CoilUtils.createDefaultCache(applicationContext))
-					.build()
-			}
-			componentRegistry {
-				add(CbzFetcher())
-			}
-		})
+		Coil.setImageLoader(
+			ImageLoaderBuilder(applicationContext)
+				.okHttpClient(
+					okHttp()
+						.cache(CoilUtils.createDefaultCache(applicationContext))
+						.build()
+				).componentRegistry(
+					ComponentRegistry.Builder()
+						.add(CbzFetcher())
+						.build()
+				)
+				.build()
+		)
 	}
 
 	private fun initErrorHandler() {

app/src/main/java/org/koitharu/kotatsu/core/db/FavouriteCategoriesDao.kt

@@ -17,4 +17,7 @@ abstract class FavouriteCategoriesDao {
 
 	@Query("DELETE FROM favourite_categories WHERE category_id = :id")
 	abstract suspend fun delete(id: Long)
+
+	@Query("UPDATE favourite_categories SET title = :title WHERE category_id = :id")
+	abstract suspend fun update(id: Long, title: String)
 }

app/src/main/java/org/koitharu/kotatsu/core/db/FavouritesDao.kt

@@ -9,8 +9,12 @@ import org.koitharu.kotatsu.core.db.entity.MangaEntity
 abstract class FavouritesDao {
 
 	@Transaction
-	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY :orderBy LIMIT :limit OFFSET :offset")
-	abstract suspend fun findAll(offset: Int, limit: Int, orderBy: String): List<FavouriteManga>
+	@Query("SELECT * FROM favourites GROUP BY manga_id ORDER BY created_at LIMIT :limit OFFSET :offset")
+	abstract suspend fun findAll(offset: Int, limit: Int): List<FavouriteManga>
+
+	@Transaction
+	@Query("SELECT * FROM favourites WHERE category_id = :categoryId GROUP BY manga_id ORDER BY created_at LIMIT :limit OFFSET :offset")
+	abstract suspend fun findAll(categoryId: Long, offset: Int, limit: Int): List<FavouriteManga>
 
 	@Query("SELECT * FROM manga WHERE manga_id IN (SELECT manga_id FROM favourites)")
 	abstract suspend fun findAllManga(): List<MangaEntity>

app/src/main/java/org/koitharu/kotatsu/core/model/MangaSource.kt

@@ -20,5 +20,8 @@ enum class MangaSource(
 	MANGACHAN("Манга-тян", "ru", MangaChanRepository::class.java),
 	DESUME("Desu.me", "ru", DesuMeRepository::class.java),
 	HENCHAN("Хентай-тян", "ru", HenChanRepository::class.java),
-	YAOICHAN("Яой-тян", "ru", YaoiChanRepository::class.java)
+	YAOICHAN("Яой-тян", "ru", YaoiChanRepository::class.java),
+	MANGATOWN("MangaTown", "en", MangaTownRepository::class.java),
+	MANGALIB("MangaLib", "ru", MangaLibRepository::class.java)
+	// HENTAILIB("HentaiLib", "ru", HentaiLibRepository::class.java)
 }

app/src/main/java/org/koitharu/kotatsu/core/parser/LocalMangaRepository.kt

@@ -14,6 +14,7 @@ import org.koitharu.kotatsu.utils.AlphanumComparator
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.readText
 import org.koitharu.kotatsu.utils.ext.safe
+import org.koitharu.kotatsu.utils.ext.sub
 import java.io.File
 import java.util.*
 import java.util.zip.ZipEntry
@@ -29,8 +30,8 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 		sortOrder: SortOrder?,
 		tag: MangaTag?
 	): List<Manga> {
-		val files = context.getExternalFilesDirs("manga")
-			.flatMap { x -> x?.listFiles(CbzFilter())?.toList().orEmpty() }
+		val files = getAvailableStorageDirs(context)
+			.flatMap { x -> x.listFiles(CbzFilter())?.toList().orEmpty() }
 		return files.mapNotNull { x -> safe { getFromFile(x) } }
 	}
 
@@ -133,9 +134,24 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 
 	companion object {
 
+		private const val DIR_NAME = "manga"
+
 		fun isFileSupported(name: String): Boolean {
 			val ext = name.substringAfterLast('.').toLowerCase(Locale.ROOT)
 			return ext == "cbz" || ext == "zip"
 		}
+
+		fun getAvailableStorageDirs(context: Context): List<File> {
+			val result = ArrayList<File>(5)
+			result += context.filesDir.sub(DIR_NAME)
+			result += context.getExternalFilesDirs(DIR_NAME)
+			return result.distinctBy { it.canonicalPath }.filter { it.exists() || it.mkdir() }
+		}
+
+		fun getFallbackStorageDir(context: Context): File? {
+			return context.getExternalFilesDir(DIR_NAME) ?: context.filesDir.sub(DIR_NAME).takeIf {
+				(it.exists() || it.mkdir()) && it.canWrite()
+			}
+		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/core/parser/RemoteMangaRepository.kt

@@ -1,18 +1,15 @@
 package org.koitharu.kotatsu.core.parser
 
-import org.koin.core.KoinComponent
-import org.koin.core.inject
 import org.koitharu.kotatsu.core.model.MangaPage
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaTag
 import org.koitharu.kotatsu.core.model.SortOrder
 import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-abstract class RemoteMangaRepository : MangaRepository, KoinComponent {
+abstract class RemoteMangaRepository(protected val loaderContext: MangaLoaderContext) : MangaRepository {
 
 	protected abstract val source: MangaSource
 
-	protected val loaderContext by inject<MangaLoaderContext>()
 	protected val conf by lazy(LazyThreadSafetyMode.NONE) {
 		loaderContext.getSettings(source)
 	}

app/src/main/java/org/koitharu/kotatsu/core/parser/site/ChanRepository.kt

@@ -4,9 +4,12 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.*
 
-abstract class ChanRepository : RemoteMangaRepository() {
+abstract class ChanRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(
+	loaderContext
+) {
 
 	protected abstract val defaultDomain: String
 

app/src/main/java/org/koitharu/kotatsu/core/parser/site/DesuMeRepository.kt

@@ -4,9 +4,13 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
-import org.koitharu.kotatsu.utils.ext.*
+import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.utils.ext.map
+import org.koitharu.kotatsu.utils.ext.mapIndexed
+import org.koitharu.kotatsu.utils.ext.parseHtml
+import org.koitharu.kotatsu.utils.ext.parseJson
 
-class DesuMeRepository : RemoteMangaRepository() {
+class DesuMeRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(loaderContext) {
 
 	override val source = MangaSource.DESUME
 

app/src/main/java/org/koitharu/kotatsu/core/parser/site/GroupleRepository.kt

@@ -4,9 +4,11 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.*
 
-abstract class GroupleRepository : RemoteMangaRepository() {
+abstract class GroupleRepository(loaderContext: MangaLoaderContext) :
+	RemoteMangaRepository(loaderContext) {
 
 	protected abstract val defaultDomain: String
 
@@ -20,7 +22,7 @@ abstract class GroupleRepository : RemoteMangaRepository() {
 		offset: Int,
 		query: String?,
 		sortOrder: SortOrder?,
-		tag: MangaTag?,
+		tag: MangaTag?
 	): List<Manga> {
 		val domain = conf.getDomain(defaultDomain)
 		val doc = when {
@@ -28,8 +30,11 @@ abstract class GroupleRepository : RemoteMangaRepository() {
 				"https://$domain/search",
 				mapOf("q" to query, "offset" to offset.toString())
 			)
-			tag == null -> loaderContext.httpGet("https://$domain/list?sortType=${getSortKey(
-				sortOrder)}&offset=$offset")
+			tag == null -> loaderContext.httpGet(
+				"https://$domain/list?sortType=${getSortKey(
+					sortOrder
+				)}&offset=$offset"
+			)
 			else -> loaderContext.httpGet(
 				"https://$domain/list/genre/${tag.key}?sortType=${getSortKey(
 					sortOrder

app/src/main/java/org/koitharu/kotatsu/core/parser/site/HenChanRepository.kt

@@ -5,11 +5,12 @@ import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaTag
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.parseHtml
 import org.koitharu.kotatsu.utils.ext.withDomain
 
-class HenChanRepository : ChanRepository() {
+class HenChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(loaderContext) {
 
 	override val defaultDomain = "h-chan.me"
 	override val source = MangaSource.HENCHAN

app/src/main/java/org/koitharu/kotatsu/core/parser/site/HentaiLibRepository.kt

@@ -0,0 +1,10 @@
+package org.koitharu.kotatsu.core.parser.site
+
+/*
+class HentaiLibRepository(loaderContext: MangaLoaderContext) : MangaLibRepository(loaderContext) {
+
+	protected override val defaultDomain = "hentailib.me"
+
+	override val source = MangaSource.HENTAILIB
+
+}*/

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaChanRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class MangaChanRepository : ChanRepository() {
+class MangaChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(loaderContext) {
 
 	override val defaultDomain = "manga-chan.me"
 	override val source = MangaSource.MANGACHAN

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaLibRepository.kt

@@ -0,0 +1,223 @@
+package org.koitharu.kotatsu.core.parser.site
+
+import org.json.JSONArray
+import org.json.JSONObject
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.exceptions.ParseException
+import org.koitharu.kotatsu.core.model.*
+import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.utils.ext.*
+
+open class MangaLibRepository(loaderContext: MangaLoaderContext) :
+	RemoteMangaRepository(loaderContext) {
+
+	protected open val defaultDomain = "mangalib.me"
+
+	override val source = MangaSource.MANGALIB
+
+	override val sortOrders = setOf(
+		SortOrder.RATING,
+		SortOrder.ALPHABETICAL,
+		SortOrder.POPULARITY,
+		SortOrder.UPDATED,
+		SortOrder.NEWEST
+	)
+
+	override suspend fun getList(
+		offset: Int,
+		query: String?,
+		sortOrder: SortOrder?,
+		tag: MangaTag?
+	): List<Manga> {
+		if (!query.isNullOrEmpty()) {
+			return search(query)
+		}
+		val domain = conf.getDomain(defaultDomain)
+		val page = (offset / 60f).toIntUp()
+		val url = buildString {
+			append("https://")
+			append(domain)
+			append("/manga-list?dir=")
+			append(getSortKey(sortOrder))
+			append("&page=")
+			append(page)
+			if (tag != null) {
+				append("&includeGenres[]=")
+				append(tag.key)
+			}
+		}
+		val doc = loaderContext.httpGet(url).parseHtml()
+		val root = doc.body().getElementById("manga-list") ?: throw ParseException("Root not found")
+		val items = root.selectFirst("div.media-cards-grid").select("div.media-card-wrap")
+		return items.mapNotNull { card ->
+			val a = card.selectFirst("a.media-card") ?: return@mapNotNull null
+			val href = a.attr("href").withDomain(domain)
+			Manga(
+				id = href.longHashCode(),
+				title = card.selectFirst("h3").text(),
+				coverUrl = a.attr("data-src").withDomain(domain),
+				altTitle = null,
+				author = null,
+				rating = Manga.NO_RATING,
+				url = href,
+				tags = emptySet(),
+				state = null,
+				source = source
+			)
+		}
+	}
+
+	override fun onCreatePreferences() = setOf(R.string.key_parser_domain)
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val doc = loaderContext.httpGet(manga.url + "?section=info").parseHtml()
+		val root = doc.body().getElementById("main-page") ?: throw ParseException("Root not found")
+		val title = root.selectFirst("div.media-header__wrap")?.children()
+		val info = root.selectFirst("div.media-content")
+		val chaptersDoc = loaderContext.httpGet(manga.url + "?section=chapters").parseHtml()
+		val scripts = chaptersDoc.body().select("script")
+		var chapters: ArrayList<MangaChapter>? = null
+		scripts@ for (script in scripts) {
+			val raw = script.html().lines()
+			for (line in raw) {
+				if (line.startsWith("window.__CHAPTERS_DATA__")) {
+					val json = JSONObject(line.substringAfter('=').substringBeforeLast(';'))
+					val list = json.getJSONArray("list")
+					val total = list.length()
+					chapters = ArrayList(total)
+					for (i in 0 until total) {
+						val item = list.getJSONObject(i)
+						val url = buildString {
+							append(manga.url)
+							append("/v")
+							append(item.getInt("chapter_volume"))
+							append("/c")
+							append(item.getString("chapter_number"))
+							append('/')
+							append(item.getJSONArray("teams").getJSONObject(0).getString("slug"))
+						}
+						var name = item.getString("chapter_name")
+						if (name.isNullOrBlank() || name == "null") {
+							name = "Том " + item.getInt("chapter_volume") +
+									" Глава " + item.getString("chapter_number")
+						}
+						chapters.add(
+							MangaChapter(
+								id = url.longHashCode(),
+								url = url,
+								source = source,
+								number = total - i,
+								name = name
+							)
+						)
+					}
+					chapters.reverse()
+					break@scripts
+				}
+			}
+		}
+		return manga.copy(
+			title = title?.getOrNull(0)?.text()?.takeUnless(String::isBlank) ?: manga.title,
+			altTitle = title?.getOrNull(1)?.text()?.substringBefore('/')?.trim(),
+			rating = root.selectFirst("div.media-stats-item__score")
+				?.selectFirst("span")
+				?.text()?.toFloatOrNull()?.div(5f) ?: manga.rating,
+			author = info.getElementsMatchingOwnText("Автор").firstOrNull()
+				?.nextElementSibling()?.text() ?: manga.author,
+			tags = info.getElementsMatchingOwnText("Жанры")?.firstOrNull()
+				?.nextElementSibling()?.select("a")?.mapNotNull { a ->
+					MangaTag(
+						title = a.text(),
+						key = a.attr("href").substringAfterLast('='),
+						source = source
+					)
+				}?.toSet() ?: manga.tags,
+			description = info.getElementsMatchingOwnText("Описание")?.firstOrNull()
+				?.nextElementSibling()?.html(),
+			chapters = chapters
+		)
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val doc = loaderContext.httpGet(chapter.url).parseHtml()
+		val scripts = doc.head().select("script")
+		val pg = doc.body().getElementById("pg").html().substringAfter('=').substringBeforeLast(';')
+		val pages = JSONArray(pg)
+		for (script in scripts) {
+			val raw = script.html().trim()
+			if (raw.startsWith("window.__info")) {
+				val json = JSONObject(raw.substringAfter('=').substringBeforeLast(';'))
+				val domain = json.getJSONObject("servers").run {
+					getStringOrNull("main") ?: getString(
+						json.getJSONObject("img").getString("server")
+					)
+				}
+				val url = json.getJSONObject("img").getString("url")
+				return pages.map { x ->
+					val pageUrl = "$domain$url${x.getString("u")}"
+					MangaPage(
+						id = pageUrl.longHashCode(),
+						source = source,
+						url = pageUrl
+					)
+				}
+			}
+		}
+		throw ParseException("Script with info not found")
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val domain = conf.getDomain(defaultDomain)
+		val url = "https://$domain/manga-list"
+		val doc = loaderContext.httpGet(url).parseHtml()
+		val scripts = doc.body().select("script")
+		for (script in scripts) {
+			val raw = script.html().trim()
+			if (raw.startsWith("window.__DATA")) {
+				val json = JSONObject(raw.substringAfter('=').substringBeforeLast(';'))
+				val genres = json.getJSONObject("filters").getJSONArray("genres")
+				val result = HashSet<MangaTag>(genres.length())
+				for (x in genres) {
+					result += MangaTag(
+						source = source,
+						key = x.getInt("id").toString(),
+						title = x.getString("name")
+					)
+				}
+				return result
+			}
+		}
+		throw ParseException("Script with genres not found")
+	}
+
+	private fun getSortKey(sortOrder: SortOrder?) = when (sortOrder) {
+		SortOrder.RATING -> "desc&sort=rate"
+		SortOrder.ALPHABETICAL -> "asc&sort=name"
+		SortOrder.POPULARITY -> "desc&sort=views"
+		SortOrder.UPDATED -> "desc&sort=last_chapter_at"
+		SortOrder.NEWEST -> "desc&sort=created_at"
+		else -> "desc&sort=last_chapter_at"
+	}
+
+	private suspend fun search(query: String): List<Manga> {
+		val domain = conf.getDomain(defaultDomain)
+		val json = loaderContext.httpGet("https://$domain/search?query=${query.urlEncoded()}")
+			.parseJsonArray()
+		return json.map { jo ->
+			val url = "https://$domain/${jo.getString("slug")}"
+			Manga(
+				id = url.longHashCode(),
+				url = url,
+				title = jo.getString("rus_name"),
+				altTitle = jo.getString("name"),
+				author = null,
+				tags = emptySet(),
+				rating = Manga.NO_RATING,
+				state = null,
+				source = source,
+				coverUrl = "https://$domain/uploads/cover/${jo.getString("slug")}/${jo.getString("cover")}/cover_thumb.jpg"
+			)
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MangaTownRepository.kt

@@ -0,0 +1,173 @@
+package org.koitharu.kotatsu.core.parser.site
+
+import org.intellij.lang.annotations.Language
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.exceptions.ParseException
+import org.koitharu.kotatsu.core.model.*
+import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
+import org.koitharu.kotatsu.domain.MangaLoaderContext
+import org.koitharu.kotatsu.utils.ext.*
+import java.util.*
+
+class MangaTownRepository(loaderContext: MangaLoaderContext) : RemoteMangaRepository(loaderContext) {
+
+	override val source = MangaSource.MANGATOWN
+
+	override val sortOrders = setOf(
+		SortOrder.ALPHABETICAL,
+		SortOrder.RATING,
+		SortOrder.POPULARITY,
+		SortOrder.UPDATED
+	)
+
+	override suspend fun getList(
+		offset: Int,
+		query: String?,
+		sortOrder: SortOrder?,
+		tag: MangaTag?
+	): List<Manga> {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val scheme = if (ssl) "https" else "http"
+		val sortKey = when (sortOrder) {
+			SortOrder.ALPHABETICAL -> "?name.az"
+			SortOrder.RATING -> "?rating.za"
+			SortOrder.UPDATED -> "?last_chapter_time.za"
+			else -> ""
+		}
+		val page = (offset / 30) + 1
+		val url = when {
+			!query.isNullOrEmpty() -> "$scheme://$domain/search?name=${query.urlEncoded()}"
+			tag != null -> "$scheme://$domain/directory/${tag.key}/$page.htm$sortKey"
+			else -> "$scheme://$domain/directory/$page.htm$sortKey"
+		}
+		val doc = loaderContext.httpGet(url).parseHtml()
+		val root = doc.body().selectFirst("ul.manga_pic_list")
+			?: throw ParseException("Root not found")
+		return root.select("li").mapNotNull { li ->
+			val a = li.selectFirst("a.manga_cover")
+			val href = a.attr("href").withDomain(domain, ssl)
+			val views = li.select("p.view")
+			val status = views.findOwnText { x -> x.startsWith("Status:") }
+				?.substringAfter(':')?.trim()?.toLowerCase(Locale.ROOT)
+			Manga(
+				id = href.longHashCode(),
+				title = a.attr("title"),
+				coverUrl = a.selectFirst("img").attr("src"),
+				source = MangaSource.MANGATOWN,
+				altTitle = null,
+				rating = li.selectFirst("p.score")?.selectFirst("b")
+					?.ownText()?.toFloatOrNull()?.div(5f) ?: Manga.NO_RATING,
+				largeCoverUrl = null,
+				author = views.findText { x -> x.startsWith("Author:") }?.substringAfter(':')
+					?.trim(),
+				state = when (status) {
+					"ongoing" -> MangaState.ONGOING
+					"completed" -> MangaState.FINISHED
+					else -> null
+				},
+				tags = li.selectFirst("p.keyWord")?.select("a")?.mapNotNull tags@{ x ->
+					MangaTag(
+						title = x.attr("title"),
+						key = x.attr("href").parseTagKey() ?: return@tags null,
+						source = MangaSource.MANGATOWN
+					)
+				}?.toSet().orEmpty(),
+				url = href
+			)
+		}
+	}
+
+	override suspend fun getDetails(manga: Manga): Manga {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val doc = loaderContext.httpGet(manga.url).parseHtml()
+		val root = doc.body().selectFirst("section.main")
+			?.selectFirst("div.article_content") ?: throw ParseException("Cannot find root")
+		val info = root.selectFirst("div.detail_info").selectFirst("ul")
+		val chaptersList = root.selectFirst("div.chapter_content")
+			?.selectFirst("ul.chapter_list")?.select("li")?.asReversed()
+		return manga.copy(
+			tags = manga.tags + info.select("li").find { x ->
+				x.selectFirst("b")?.ownText() == "Genre(s):"
+			}?.select("a")?.mapNotNull { a ->
+				MangaTag(
+					title = a.attr("title"),
+					key = a.attr("href").parseTagKey() ?: return@mapNotNull null,
+					source = MangaSource.MANGATOWN
+				)
+			}.orEmpty(),
+			description = info.getElementById("show")?.ownText(),
+			chapters = chaptersList?.mapIndexedNotNull { i, li ->
+					val href = li.selectFirst("a").attr("href").withDomain(domain, ssl)
+				val name = li.select("span").filter { it.className().isEmpty() }.joinToString(" - ") { it.text() }.trim()
+					MangaChapter(
+						id = href.longHashCode(),
+						url = href,
+						source = MangaSource.MANGATOWN,
+						number = i + 1,
+						name = if (name.isEmpty()) "${manga.title} - ${i + 1}" else name
+					)
+				}
+		)
+	}
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val doc = loaderContext.httpGet(chapter.url).parseHtml()
+		val root = doc.body().selectFirst("div.page_select")
+			?: throw ParseException("Cannot find root")
+		return root.selectFirst("select").select("option").mapNotNull {
+			val href = it.attr("value").withDomain(domain, ssl)
+			if (href.endsWith("featured.html")) {
+				return@mapNotNull null
+			}
+			MangaPage(
+				id = href.longHashCode(),
+				url = href,
+				source = MangaSource.MANGATOWN
+			)
+		}
+	}
+
+	override suspend fun getPageFullUrl(page: MangaPage): String {
+		val domain = conf.getDomain(DOMAIN)
+		val ssl = conf.isUseSsl(false)
+		val doc = loaderContext.httpGet(page.url).parseHtml()
+		return doc.getElementById("image").attr("src").withDomain(domain, ssl)
+	}
+
+	override suspend fun getTags(): Set<MangaTag> {
+		val domain = conf.getDomain(DOMAIN)
+		val doc = loaderContext.httpGet("http://$domain/directory/").parseHtml()
+		val root = doc.body().selectFirst("aside.right")
+			.getElementsContainingOwnText("Genres")
+			.first()
+			.nextElementSibling()
+		return root.select("li").mapNotNull { li ->
+			val a = li.selectFirst("a") ?: return@mapNotNull null
+			val key = a.attr("href").parseTagKey()
+			if (key.isNullOrEmpty()) {
+				return@mapNotNull null
+			}
+			MangaTag(
+				source = MangaSource.MANGATOWN,
+				key = key,
+				title = a.text()
+			)
+		}.toSet()
+	}
+
+
+	override fun onCreatePreferences() = setOf(R.string.key_parser_domain, R.string.key_parser_ssl)
+
+	private fun String.parseTagKey() = split('/').findLast { TAG_REGEX matches it }
+
+	private companion object {
+
+		@Language("RegExp")
+		val TAG_REGEX = Regex("[^\\-]+-[^\\-]+-[^\\-]+-[^\\-]+-[^\\-]+-[^\\-]+")
+		const val DOMAIN = "www.mangatown.com"
+	}
+}

app/src/main/java/org/koitharu/kotatsu/core/parser/site/MintMangaRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class MintMangaRepository : GroupleRepository() {
+class MintMangaRepository(loaderContext: MangaLoaderContext) : GroupleRepository(loaderContext) {
 
 	override val source = MangaSource.MINTMANGA
 	override val defaultDomain: String = "mintmanga.live"

app/src/main/java/org/koitharu/kotatsu/core/parser/site/ReadmangaRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class ReadmangaRepository : GroupleRepository() {
+class ReadmangaRepository(loaderContext: MangaLoaderContext) : GroupleRepository(loaderContext) {
 
 	override val defaultDomain = "readmanga.me"
 	override val source = MangaSource.READMANGA_RU

app/src/main/java/org/koitharu/kotatsu/core/parser/site/SelfMangaRepository.kt

@@ -1,8 +1,9 @@
 package org.koitharu.kotatsu.core.parser.site
 
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 
-class SelfMangaRepository : GroupleRepository() {
+class SelfMangaRepository(loaderContext: MangaLoaderContext) : GroupleRepository(loaderContext) {
 
 	override val defaultDomain = "selfmanga.ru"
 	override val source = MangaSource.SELFMANGA

app/src/main/java/org/koitharu/kotatsu/core/parser/site/YaoiChanRepository.kt

@@ -4,11 +4,12 @@ import org.koitharu.kotatsu.core.exceptions.ParseException
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
+import org.koitharu.kotatsu.domain.MangaLoaderContext
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import org.koitharu.kotatsu.utils.ext.parseHtml
 import org.koitharu.kotatsu.utils.ext.withDomain
 
-class YaoiChanRepository : ChanRepository() {
+class YaoiChanRepository(loaderContext: MangaLoaderContext) : ChanRepository(loaderContext) {
 
 	override val source = MangaSource.YAOICHAN
 	override val defaultDomain = "yaoi-chan.me"

app/src/main/java/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -3,11 +3,15 @@ package org.koitharu.kotatsu.core.prefs
 import android.content.Context
 import android.content.SharedPreferences
 import android.content.res.Resources
+import android.os.StatFs
 import android.provider.Settings
 import androidx.appcompat.app.AppCompatDelegate
+import androidx.core.content.edit
 import androidx.preference.PreferenceManager
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.parser.LocalMangaRepository
 import org.koitharu.kotatsu.utils.delegates.prefs.*
+import java.io.File
 
 class AppSettings private constructor(resources: Resources, private val prefs: SharedPreferences) :
 	SharedPreferences by prefs {
@@ -73,6 +77,11 @@ class AppSettings private constructor(resources: Resources, private val prefs: S
 		true
 	)
 
+	val readerAnimation by BoolPreferenceDelegate(
+		resources.getString(R.string.key_reader_animation),
+		false
+	)
+
 	private var sourcesOrderStr by NullableStringPreferenceDelegate(resources.getString(R.string.key_sources_order))
 
 	var sourcesOrder: List<Int>
@@ -83,6 +92,24 @@ class AppSettings private constructor(resources: Resources, private val prefs: S
 
 	var hiddenSources by StringSetPreferenceDelegate(resources.getString(R.string.key_sources_hidden))
 
+	fun getStorageDir(context: Context): File? {
+		val value = prefs.getString(context.getString(R.string.key_local_storage), null)?.let {
+			File(it)
+		}?.takeIf { it.exists() && it.canWrite() }
+		return value ?: LocalMangaRepository.getFallbackStorageDir(context)
+	}
+
+	fun setStorageDir(context: Context, file: File?) {
+		val key = context.getString(R.string.key_local_storage)
+		prefs.edit {
+			if (file == null) {
+				remove(key)
+			} else {
+				putString(key, file.path)
+			}
+		}
+	}
+
 	fun subscribe(listener: SharedPreferences.OnSharedPreferenceChangeListener) {
 		prefs.registerOnSharedPreferenceChangeListener(listener)
 	}

app/src/main/java/org/koitharu/kotatsu/core/prefs/AppWidgetConfig.kt

@@ -0,0 +1,26 @@
+package org.koitharu.kotatsu.core.prefs
+
+import android.content.Context
+import android.content.SharedPreferences
+import org.koitharu.kotatsu.utils.delegates.prefs.LongPreferenceDelegate
+
+class AppWidgetConfig private constructor(
+	private val prefs: SharedPreferences,
+	val widgetId: Int
+) :	SharedPreferences by prefs {
+
+	var categoryId by LongPreferenceDelegate(CATEGORY_ID, 0L)
+
+	companion object {
+
+		private const val CATEGORY_ID = "cat_id"
+
+		fun getInstance(context: Context, widgetId: Int) = AppWidgetConfig(
+			context.getSharedPreferences(
+				"appwidget_$widgetId",
+				Context.MODE_PRIVATE
+			), widgetId
+		)
+	}
+
+}

app/src/main/java/org/koitharu/kotatsu/core/prefs/SourceConfig.kt

@@ -8,16 +8,20 @@ interface SourceConfig {
 
 	fun getDomain(defaultValue: String): String
 
+	fun isUseSsl(defaultValue: Boolean): Boolean
+
 	private class PrefSourceConfig(context: Context, source: MangaSource) : SourceConfig {
 
 		private val prefs = context.getSharedPreferences(source.name, Context.MODE_PRIVATE)
 
 		private val keyDomain = context.getString(R.string.key_parser_domain)
+		private val keySsl = context.getString(R.string.key_parser_ssl)
 
 		override fun getDomain(defaultValue: String) = prefs.getString(keyDomain, defaultValue)
 			?.takeUnless(String::isBlank)
 			?: defaultValue
 
+		override fun isUseSsl(defaultValue: Boolean) = prefs.getBoolean(keySsl, defaultValue)
 	}
 
 	companion object {

app/src/main/java/org/koitharu/kotatsu/domain/MangaProviderFactory.kt

@@ -2,13 +2,19 @@ package org.koitharu.kotatsu.domain
 
 import org.koin.core.KoinComponent
 import org.koin.core.get
+import org.koin.core.inject
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.parser.LocalMangaRepository
 import org.koitharu.kotatsu.core.parser.MangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
+import java.lang.ref.WeakReference
+import java.util.*
 
 object MangaProviderFactory : KoinComponent {
 
+	private val loaderContext by inject<MangaLoaderContext>()
+	private val cache = EnumMap<MangaSource, WeakReference<MangaRepository>>(MangaSource::class.java)
+
 	fun getSources(includeHidden: Boolean): List<MangaSource> {
 		val settings = get<AppSettings>()
 		val list = MangaSource.values().toList() - MangaSource.LOCAL
@@ -18,7 +24,7 @@ object MangaProviderFactory : KoinComponent {
 			val e = order.indexOf(x.ordinal)
 			if (e == -1) order.size + x.ordinal else e
 		}
-		return if(includeHidden) {
+		return if (includeHidden) {
 			sorted
 		} else {
 			sorted.filterNot { x ->
@@ -27,9 +33,24 @@ object MangaProviderFactory : KoinComponent {
 		}
 	}
 
-	fun createLocal() = LocalMangaRepository()
+	fun createLocal(): LocalMangaRepository =
+		(cache[MangaSource.LOCAL]?.get() as? LocalMangaRepository)
+			?: LocalMangaRepository().also {
+				cache[MangaSource.LOCAL] = WeakReference<MangaRepository>(it)
+			}
 
+	@Throws(Throwable::class)
 	fun create(source: MangaSource): MangaRepository {
-		return source.cls.newInstance()
+		cache[source]?.get()?.let {
+			return it
+		}
+		val instance = try {
+			source.cls.getDeclaredConstructor(MangaLoaderContext::class.java)
+				.newInstance(loaderContext)
+		} catch (e: NoSuchMethodException) {
+			source.cls.newInstance()
+		}
+		cache[source] = WeakReference<MangaRepository>(instance)
+		return instance
 	}
 }

app/src/main/java/org/koitharu/kotatsu/domain/favourites/FavouritesRepository.kt

@@ -19,7 +19,12 @@ class FavouritesRepository : KoinComponent {
 	private val db: MangaDatabase by inject()
 
 	suspend fun getAllManga(offset: Int): List<Manga> {
-		val entities = db.favouritesDao.findAll(offset, 20, "created_at")
+		val entities = db.favouritesDao.findAll(offset, 20)
+		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
+	}
+
+	suspend fun getManga(categoryId: Long, offset: Int): List<Manga> {
+		val entities = db.favouritesDao.findAll(categoryId, offset, 20)
 		return entities.map { it.manga.toManga(it.tags.map(TagEntity::toMangaTag).toSet()) }
 	}
 
@@ -42,6 +47,9 @@ class FavouritesRepository : KoinComponent {
 		val id = db.favouriteCategoriesDao.insert(entity)
 		return entity.toFavouriteCategory(id)
 	}
+	suspend fun renameCategory(id: Long, title: String) {
+		db.favouriteCategoriesDao.update(id, title)
+	}
 
 	suspend fun removeCategory(id: Long) {
 		db.favouriteCategoriesDao.delete(id)

app/src/main/java/org/koitharu/kotatsu/domain/history/ChapterExtra.kt

@@ -2,5 +2,5 @@ package org.koitharu.kotatsu.domain.history
 
 enum class ChapterExtra {
 
-	READ, CURRENT, UNREAD, NEW
+	READ, CURRENT, UNREAD, NEW, CHECKED
 }

app/src/main/java/org/koitharu/kotatsu/domain/history/HistoryRepository.kt

@@ -17,6 +17,7 @@ import java.util.*
 class HistoryRepository : KoinComponent {
 
 	private val db: MangaDatabase by inject()
+	private val trackingRepository by lazy(::TrackingRepository)
 
 	suspend fun getList(offset: Int, limit: Int = 20): List<Manga> {
 		val entities = db.historyDao.findAll(offset, limit)
@@ -28,19 +29,17 @@ class HistoryRepository : KoinComponent {
 		db.withTransaction {
 			db.tagsDao.upsert(tags)
 			db.mangaDao.upsert(MangaEntity.from(manga), tags)
-			if (db.historyDao.upsert(
-					HistoryEntity(
-						mangaId = manga.id,
-						createdAt = System.currentTimeMillis(),
-						updatedAt = System.currentTimeMillis(),
-						chapterId = chapterId,
-						page = page,
-						scroll = scroll
-					)
+			db.historyDao.upsert(
+				HistoryEntity(
+					mangaId = manga.id,
+					createdAt = System.currentTimeMillis(),
+					updatedAt = System.currentTimeMillis(),
+					chapterId = chapterId,
+					page = page,
+					scroll = scroll
 				)
-			) {
-				TrackingRepository().insertOrNothing(manga)
-			}
+			)
+			trackingRepository.upsert(manga)
 		}
 		notifyHistoryChanged()
 	}

app/src/main/java/org/koitharu/kotatsu/domain/local/MangaIndex.kt

@@ -7,6 +7,7 @@ import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaChapter
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaTag
+import org.koitharu.kotatsu.utils.ext.getStringOrNull
 import org.koitharu.kotatsu.utils.ext.map
 import org.koitharu.kotatsu.utils.ext.safe
 
@@ -44,12 +45,12 @@ class MangaIndex(source: String?) {
 		Manga(
 			id = json.getLong("id"),
 			title = json.getString("title"),
-			altTitle = json.getString("title_alt"),
+			altTitle = json.getStringOrNull("title_alt"),
 			url = json.getString("url"),
 			source = source,
 			rating = json.getDouble("rating").toFloat(),
 			coverUrl = json.getString("cover"),
-			description = json.getString("description"),
+			description = json.getStringOrNull("description"),
 			tags = json.getJSONArray("tags").map { x ->
 				MangaTag(
 					title = x.getString("title"),

app/src/main/java/org/koitharu/kotatsu/domain/tracking/TrackingRepository.kt

@@ -52,7 +52,7 @@ class TrackingRepository : KoinComponent {
 		db.tracksDao.upsert(entity)
 	}
 
-	suspend fun insertOrNothing(manga: Manga) {
+	suspend fun upsert(manga: Manga) {
 		val chapters = manga.chapters ?: return
 		val entity = TrackEntity(
 			mangaId = manga.id,
@@ -62,6 +62,6 @@ class TrackingRepository : KoinComponent {
 			lastCheck = System.currentTimeMillis(),
 			lastNotifiedChapterId = 0L
 		)
-		db.tracksDao.insert(entity)
+		db.tracksDao.upsert(entity)
 	}
 }

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

@@ -1,12 +1,9 @@
 package org.koitharu.kotatsu.ui.common
 
-import android.content.pm.PackageManager
 import android.view.KeyEvent
 import android.view.MenuItem
 import android.view.View
 import androidx.appcompat.widget.Toolbar
-import androidx.core.app.ActivityCompat
-import androidx.core.content.ContextCompat
 import moxy.MvpAppCompatActivity
 import org.koin.core.KoinComponent
 import org.koitharu.kotatsu.BuildConfig
@@ -14,8 +11,6 @@ import org.koitharu.kotatsu.R
 
 abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 
-	private var permissionCallback: ((Boolean) -> Unit)? = null
-
 	override fun setContentView(layoutResID: Int) {
 		super.setContentView(layoutResID)
 		setupToolbar()
@@ -35,48 +30,12 @@ abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 		true
 	} else super.onOptionsItemSelected(item)
 
-	fun requestPermission(permission: String, callback: (Boolean) -> Unit) {
-		if (ContextCompat.checkSelfPermission(
-				this,
-				permission
-			) == PackageManager.PERMISSION_GRANTED
-		) {
-			callback(true)
-		} else {
-			permissionCallback = callback
-			ActivityCompat.requestPermissions(this, arrayOf(permission), REQUEST_PERMISSION)
-		}
-	}
-
-	override fun onRequestPermissionsResult(
-		requestCode: Int,
-		permissions: Array<out String>,
-		grantResults: IntArray
-	) {
-		super.onRequestPermissionsResult(requestCode, permissions, grantResults)
-		if (requestCode == REQUEST_PERMISSION) {
-			grantResults.singleOrNull()?.let {
-				permissionCallback?.invoke(it == PackageManager.PERMISSION_GRANTED)
-			}
-			permissionCallback = null
-		}
-	}
-
 	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
 		//TODO remove. Just for testing
 		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
 			recreate()
 			return true
 		}
-		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
-			throw StackOverflowError("test")
-			return true
-		}
 		return super.onKeyDown(keyCode, event)
 	}
-
-	private companion object {
-
-		const val REQUEST_PERMISSION = 30
-	}
 }

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

@@ -2,7 +2,6 @@ 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
@@ -10,7 +9,8 @@ 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.core.parser.LocalMangaRepository
+import org.koitharu.kotatsu.utils.ext.getStorageName
 import org.koitharu.kotatsu.utils.ext.inflate
 import org.koitharu.kotatsu.utils.ext.longHashCode
 import java.io.File
@@ -20,12 +20,24 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 
 	fun show() = delegate.show()
 
-	class Builder(context: Context) {
+	class Builder(context: Context, defaultValue: File?, listener: OnStorageSelectListener) {
 
+		private val adapter = VolumesAdapter(context)
 		private val delegate = AlertDialog.Builder(context)
-			.setAdapter(VolumesAdapter(context)) { _, _ ->
 
+		init {
+			if (adapter.isEmpty) {
+				delegate.setMessage(R.string.cannot_find_available_storage)
+			} else {
+				val checked = adapter.volumes.indexOfFirst {
+					it.first.canonicalPath == defaultValue?.canonicalPath
+				}
+				delegate.setSingleChoiceItems(adapter, checked) { d, i ->
+					listener.onStorageSelected(adapter.getItem(i).first)
+					d.dismiss()
+				}
 			}
+		}
 
 		fun setTitle(@StringRes titleResId: Int): Builder {
 			delegate.setTitle(titleResId)
@@ -37,12 +49,17 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 			return this
 		}
 
+		fun setNegativeButton(@StringRes textId: Int): Builder {
+			delegate.setNegativeButton(textId, null)
+			return this
+		}
+
 		fun create() = StorageSelectDialog(delegate.create())
 	}
 
-	private class VolumesAdapter(context: Context): BaseAdapter() {
+	private class VolumesAdapter(context: Context) : BaseAdapter() {
 
-		private val volumes = getAvailableVolumes(context)
+		val volumes = getAvailableVolumes(context)
 
 		override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
 			val view = convertView ?: parent.inflate(R.layout.item_storage)
@@ -52,7 +69,7 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 			return view
 		}
 
-		override fun getItem(position: Int): Any = volumes[position]
+		override fun getItem(position: Int): Pair<File, String> = volumes[position]
 
 		override fun getItemId(position: Int) = volumes[position].first.absolutePath.longHashCode()
 
@@ -60,15 +77,17 @@ class StorageSelectDialog private constructor(private val delegate: AlertDialog)
 
 	}
 
+	interface OnStorageSelectListener {
+
+		fun onStorageSelected(file: File)
+	}
+
 	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
+		fun getAvailableVolumes(context: Context): List<Pair<File, String>> {
+			return LocalMangaRepository.getAvailableStorageDirs(context).map {
+				it to it.getStorageName(context)
 			}
 		}
 	}

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

@@ -3,28 +3,16 @@ package org.koitharu.kotatsu.ui.common.dialog
 import android.annotation.SuppressLint
 import android.content.Context
 import android.content.DialogInterface
+import android.text.InputFilter
 import android.view.LayoutInflater
-import android.view.inputmethod.InputMethodManager
-import android.widget.TextView
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
 import kotlinx.android.synthetic.main.dialog_input.view.*
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.utils.ext.showKeyboard
 
 class TextInputDialog private constructor(private val delegate: AlertDialog) :
 	DialogInterface by delegate {
 
-	init {
-		delegate.setOnShowListener {
-			val view = delegate.findViewById<TextView>(R.id.inputEdit)?:return@setOnShowListener
-			view.post {
-				view.requestFocus()
-				view.showKeyboard()
-			}
-		}
-	}
-
 	fun show() = delegate.show()
 
 	class Builder(context: Context) {
@@ -34,10 +22,6 @@ class TextInputDialog private constructor(private val delegate: AlertDialog) :
 
 		private val delegate = AlertDialog.Builder(context)
 			.setView(view)
-			.setOnDismissListener {
-				val imm = view.context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
-				imm.toggleSoftInput(InputMethodManager.HIDE_IMPLICIT_ONLY, 0)
-			}
 
 		fun setTitle(@StringRes titleResId: Int): Builder {
 			delegate.setTitle(titleResId)
@@ -54,11 +38,28 @@ class TextInputDialog private constructor(private val delegate: AlertDialog) :
 			return this
 		}
 
+		fun setMaxLength(maxLength: Int, strict: Boolean): Builder {
+			with(view.inputLayout) {
+				counterMaxLength = maxLength
+				isCounterEnabled = maxLength > 0
+			}
+			if (strict && maxLength > 0) {
+				view.inputEdit.filters += InputFilter.LengthFilter(maxLength)
+			}
+			return this
+		}
+
 		fun setInputType(inputType: Int): Builder {
 			view.inputEdit.inputType = inputType
 			return this
 		}
 
+		fun setText(text: String): Builder {
+			view.inputEdit.setText(text)
+			view.inputEdit.setSelection(text.length)
+			return this
+		}
+
 		fun setPositiveButton(@StringRes textId: Int, listener: (DialogInterface, String) -> Unit): Builder {
 			delegate.setPositiveButton(textId) { dialog, _ ->
 				listener(dialog, view.inputEdit.text?.toString().orEmpty())

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

@@ -1,5 +1,6 @@
 package org.koitharu.kotatsu.ui.common.list
 
+import android.os.Build
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.LayoutRes
@@ -31,10 +32,15 @@ abstract class BaseViewHolder<T, E> protected constructor(view: View) :
 	fun setOnItemClickListener(listener: OnRecyclerItemClickListener<T>?): BaseViewHolder<T, E> {
 		if (listener != null) {
 			itemView.setOnClickListener {
-				listener.onItemClick(boundData ?: return@setOnClickListener, adapterPosition, it)
+				listener.onItemClick(boundData ?: return@setOnClickListener, bindingAdapterPosition, it)
 			}
 			itemView.setOnLongClickListener {
-				listener.onItemLongClick(boundData ?: return@setOnLongClickListener false, adapterPosition, it)
+				listener.onItemLongClick(boundData ?: return@setOnLongClickListener false, bindingAdapterPosition, it)
+			}
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+				itemView.setOnContextClickListener {
+					listener.onItemLongClick(boundData ?: return@setOnContextClickListener false, bindingAdapterPosition, it)
+				}
 			}
 		}
 		return this

app/src/main/java/org/koitharu/kotatsu/ui/details/ChapterHolder.kt

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.ui.details
 
+import android.graphics.Color
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import kotlinx.android.synthetic.main.item_chapter.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaChapter
@@ -14,6 +16,7 @@ class ChapterHolder(parent: ViewGroup) :
 	override fun onBind(data: MangaChapter, extra: ChapterExtra) {
 		textView_title.text = data.name
 		textView_number.text = data.number.toString()
+		imageView_check.isVisible = extra == ChapterExtra.CHECKED
 		when (extra) {
 			ChapterExtra.UNREAD -> {
 				textView_number.setBackgroundResource(R.drawable.bg_badge_default)
@@ -31,6 +34,10 @@ class ChapterHolder(parent: ViewGroup) :
 				textView_number.setBackgroundResource(R.drawable.bg_badge_accent)
 				textView_number.setTextColor(context.getThemeColor(android.R.attr.textColorPrimaryInverse))
 			}
+			ChapterExtra.CHECKED -> {
+				textView_number.setBackgroundResource(R.drawable.bg_badge_accent)
+				textView_number.setTextColor(Color.TRANSPARENT)
+			}
 		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/ChaptersAdapter.kt

@@ -10,6 +10,14 @@ import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
 class ChaptersAdapter(onItemClickListener: OnRecyclerItemClickListener<MangaChapter>) :
 	BaseRecyclerAdapter<MangaChapter, ChapterExtra>(onItemClickListener) {
 
+	private val checkedIds = HashSet<Long>()
+
+	val checkedItemsCount: Int
+		get() = checkedIds.size
+
+	val checkedItemsIds: Set<Long>
+		get() = checkedIds
+
 	var currentChapterId: Long? = null
 		set(value) {
 			field = value
@@ -26,11 +34,37 @@ class ChaptersAdapter(onItemClickListener: OnRecyclerItemClickListener<MangaChap
 	var currentChapterPosition = RecyclerView.NO_POSITION
 		private set
 
+	fun clearChecked() {
+		checkedIds.clear()
+		notifyDataSetChanged()
+	}
+
+	fun checkAll() {
+		for (item in dataSet) {
+			checkedIds.add(item.id)
+		}
+		notifyDataSetChanged()
+	}
+
+	fun setItemIsChecked(itemId: Long, isChecked: Boolean) {
+		if ((isChecked && checkedIds.add(itemId)) || (!isChecked && checkedIds.remove(itemId))) {
+			val pos = findItemPositionById(itemId)
+			if (pos != RecyclerView.NO_POSITION) {
+				notifyItemChanged(pos)
+			}
+		}
+	}
+
+	fun toggleItemChecked(itemId: Long) {
+		setItemIsChecked(itemId, itemId !in checkedIds)
+	}
+
 	override fun onCreateViewHolder(parent: ViewGroup) = ChapterHolder(parent)
 
 	override fun onGetItemId(item: MangaChapter) = item.id
 
 	override fun getExtra(item: MangaChapter, position: Int): ChapterExtra = when {
+		item.id in checkedIds -> ChapterExtra.CHECKED
 		currentChapterPosition == RecyclerView.NO_POSITION
 				|| currentChapterPosition < position -> if (position >= itemCount - newChaptersCount) {
 			ChapterExtra.NEW

app/src/main/java/org/koitharu/kotatsu/ui/details/ChaptersFragment.kt

@@ -1,7 +1,12 @@
 package org.koitharu.kotatsu.ui.details
 
+import android.app.ActivityOptions
 import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
 import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.view.ActionMode
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -9,18 +14,15 @@ import androidx.recyclerview.widget.RecyclerView
 import kotlinx.android.synthetic.main.fragment_chapters.*
 import moxy.ktx.moxyPresenter
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.model.FavouriteCategory
-import org.koitharu.kotatsu.core.model.Manga
-import org.koitharu.kotatsu.core.model.MangaChapter
-import org.koitharu.kotatsu.core.model.MangaHistory
+import org.koitharu.kotatsu.core.model.*
 import org.koitharu.kotatsu.ui.common.BaseFragment
 import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
 import org.koitharu.kotatsu.ui.download.DownloadService
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
-import org.koitharu.kotatsu.utils.ext.showPopupMenu
+import org.koitharu.kotatsu.utils.ext.resolveDp
 
 class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsView,
-	OnRecyclerItemClickListener<MangaChapter> {
+	OnRecyclerItemClickListener<MangaChapter>, ActionMode.Callback {
 
 	@Suppress("unused")
 	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
@@ -28,6 +30,7 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	private var manga: Manga? = null
 
 	private lateinit var adapter: ChaptersAdapter
+	private var actionMode: ActionMode? = null
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
@@ -68,30 +71,39 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	override fun onFavouriteChanged(categories: List<FavouriteCategory>) = Unit
 
 	override fun onItemClick(item: MangaChapter, position: Int, view: View) {
+		if (adapter.checkedItemsCount != 0) {
+			adapter.toggleItemChecked(item.id)
+			if (adapter.checkedItemsCount == 0) {
+				actionMode?.finish()
+			} else {
+				actionMode?.invalidate()
+			}
+			return
+		}
+		val options = ActivityOptions.makeScaleUpAnimation(
+			view,
+			0,
+			0,
+			view.measuredWidth,
+			view.measuredHeight
+		)
 		startActivity(
 			ReaderActivity.newIntent(
 				context ?: return,
 				manga ?: return,
 				item.id
-			)
+			), options.toBundle()
 		)
 	}
 
 	override fun onItemLongClick(item: MangaChapter, position: Int, view: View): Boolean {
-		view.showPopupMenu(R.menu.popup_chapter) {
-			val ctx = context ?: return@showPopupMenu false
-			val m = manga ?: return@showPopupMenu false
-			when (it.itemId) {
-				R.id.action_save_this -> DownloadService.start(ctx, m, setOf(item.id))
-				R.id.action_save_this_next -> DownloadService.start(ctx, m, m.chapters.orEmpty()
-					.filter { x -> x.number >= item.number }.map { x -> x.id })
-				R.id.action_save_this_prev -> DownloadService.start(ctx, m, m.chapters.orEmpty()
-					.filter { x -> x.number <= item.number }.map { x -> x.id })
-				else -> return@showPopupMenu false
-			}
-			true
+		if (actionMode == null) {
+			actionMode = (activity as? AppCompatActivity)?.startSupportActionMode(this)
 		}
-		return true
+		return actionMode?.also {
+			adapter.setItemIsChecked(item.id, true)
+			it.invalidate()
+		} != null
 	}
 
 	private fun scrollToCurrent() {
@@ -99,7 +111,49 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 			?: RecyclerView.NO_POSITION
 		if (pos != RecyclerView.NO_POSITION) {
 			(recyclerView_chapters.layoutManager as? LinearLayoutManager)
-				?.scrollToPositionWithOffset(pos, 100)
+				?.scrollToPositionWithOffset(pos, resources.resolveDp(40))
 		}
 	}
+
+	override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.action_save -> {
+				DownloadService.start(
+					context ?: return false,
+					manga ?: return false,
+					adapter.checkedItemsIds
+				)
+				true
+			}
+			R.id.action_select_all -> {
+				adapter.checkAll()
+				mode.invalidate()
+				true
+			}
+			else -> false
+		}
+	}
+
+	override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
+		mode.menuInflater.inflate(R.menu.mode_chapters, menu)
+		menu.findItem(R.id.action_save).isVisible = manga?.source != MangaSource.LOCAL
+		mode.title = manga?.title
+		return true
+	}
+
+	override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
+		val count = adapter.checkedItemsCount
+		mode.subtitle = resources.getQuantityString(
+			R.plurals.chapters_from_x,
+			count,
+			count,
+			adapter.itemCount
+		)
+		return true
+	}
+
+	override fun onDestroyActionMode(mode: ActionMode?) {
+		adapter.clearChecked()
+		actionMode = null
+	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt

@@ -8,10 +8,13 @@ import android.view.Menu
 import android.view.MenuItem
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.view.ActionMode
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.net.toFile
 import androidx.lifecycle.lifecycleScope
 import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator
 import kotlinx.android.synthetic.main.activity_details.*
 import kotlinx.coroutines.launch
 import moxy.MvpDelegate
@@ -29,7 +32,8 @@ import org.koitharu.kotatsu.utils.MangaShortcut
 import org.koitharu.kotatsu.utils.ShareHelper
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
-class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
+class MangaDetailsActivity : BaseActivity(), MangaDetailsView,
+	TabLayoutMediator.TabConfigurationStrategy {
 
 	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
 
@@ -39,8 +43,8 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_details)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-		pager.adapter = MangaDetailsAdapter(resources, supportFragmentManager)
-		tabs.setupWithViewPager(pager)
+		pager.adapter = MangaDetailsAdapter(this)
+		TabLayoutMediator(tabs, pager, this).attach()
 		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
 			intent?.getParcelableExtra<Manga>(EXTRA_MANGA)?.let {
 				presenter.loadDetails(it, true)
@@ -169,10 +173,28 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		else -> super.onOptionsItemSelected(item)
 	}
 
+	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
+		tab.text = when(position) {
+			0 -> getString(R.string.details)
+			1 -> getString(R.string.chapters)
+			else -> null
+		}
+	}
+
+	override fun onSupportActionModeStarted(mode: ActionMode) {
+		super.onSupportActionModeStarted(mode)
+		pager.isUserInputEnabled = false
+	}
+
+	override fun onSupportActionModeFinished(mode: ActionMode) {
+		super.onSupportActionModeFinished(mode)
+		pager.isUserInputEnabled = true
+	}
+
 	companion object {
 
 		private const val EXTRA_MANGA = "manga"
-		private const val EXTRA_MANGA_ID = "manga_id"
+		const val EXTRA_MANGA_ID = "manga_id"
 
 		const val ACTION_MANGA_VIEW = "${BuildConfig.APPLICATION_ID}.action.VIEW_MANGA"
 

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsAdapter.kt

@@ -1,24 +1,16 @@
 package org.koitharu.kotatsu.ui.details
 
-import android.content.res.Resources
 import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentPagerAdapter
-import org.koitharu.kotatsu.R
+import androidx.fragment.app.FragmentActivity
+import androidx.viewpager2.adapter.FragmentStateAdapter
 
-class MangaDetailsAdapter(private val resources: Resources, fm: FragmentManager) : FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
+class MangaDetailsAdapter(activity: FragmentActivity) : FragmentStateAdapter(activity) {
 
-	override fun getCount() = 2
+	override fun getItemCount() = 2
 
-	override fun getItem(position: Int): Fragment = when(position) {
+	override fun createFragment(position: Int): Fragment = when(position) {
 		0 -> MangaDetailsFragment()
 		1 -> ChaptersFragment()
 		else -> throw IndexOutOfBoundsException("No fragment for position $position")
 	}
-
-	override fun getPageTitle(position: Int): CharSequence? = when(position) {
-		0 -> resources.getString(R.string.details)
-		1 -> resources.getString(R.string.chapters)
-		else -> null
-	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsFragment.kt

@@ -13,7 +13,7 @@ import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.ui.common.BaseFragment
-import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesDialog
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.select.FavouriteCategoriesDialog
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
 import org.koitharu.kotatsu.ui.search.MangaSearchSheet
 import org.koitharu.kotatsu.utils.ext.addChips

app/src/main/java/org/koitharu/kotatsu/ui/download/DownloadService.kt

@@ -8,7 +8,7 @@ import android.webkit.MimeTypeMap
 import android.widget.Toast
 import androidx.core.content.ContextCompat
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import kotlinx.coroutines.*
 import kotlinx.coroutines.sync.Mutex
 import okhttp3.OkHttpClient
@@ -30,6 +30,7 @@ import org.koitharu.kotatsu.utils.ext.safe
 import org.koitharu.kotatsu.utils.ext.sub
 import java.io.File
 import java.util.concurrent.TimeUnit
+import kotlin.collections.set
 import kotlin.math.absoluteValue
 
 class DownloadService : BaseService() {
@@ -39,6 +40,7 @@ class DownloadService : BaseService() {
 
 	private val okHttp by inject<OkHttpClient>()
 	private val cache by inject<PagesCache>()
+	private val settings by inject<AppSettings>()
 	private val jobs = HashMap<Int, Job>()
 	private val mutex = Mutex()
 
@@ -80,12 +82,15 @@ class DownloadService : BaseService() {
 				notification.setCancelId(startId)
 				startForeground(DownloadNotification.NOTIFICATION_ID, notification())
 			}
-			val destination = getExternalFilesDir("manga")!!
+			val destination = settings.getStorageDir(this@DownloadService)
+			checkNotNull(destination) { getString(R.string.cannot_find_available_storage) }
 			var output: MangaZip? = null
 			try {
 				val repo = MangaProviderFactory.create(manga.source)
 				val cover = safe {
-					Coil.loader().get(manga.coverUrl)
+					Coil.execute(GetRequestBuilder(this@DownloadService)
+						.data(manga.coverUrl)
+						.build()).drawable
 				}
 				withContext(Dispatchers.Main) {
 					notification.setLargeIcon(cover)

app/src/main/java/org/koitharu/kotatsu/ui/main/MainActivity.kt

@@ -1,9 +1,11 @@
 package org.koitharu.kotatsu.ui.main
 
+import android.app.ActivityOptions
 import android.content.SharedPreferences
 import android.content.res.ColorStateList
 import android.content.res.Configuration
 import android.graphics.Color
+import android.os.Build
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
@@ -45,7 +47,6 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_main)
-
 		drawerToggle =
 			ActionBarDrawerToggle(this, drawer, toolbar, R.string.open_menu, R.string.close_menu)
 		drawer.addDrawerListener(drawerToggle)
@@ -119,7 +120,16 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 	}
 
 	override fun onOpenReader(state: ReaderState) {
-		startActivity(ReaderActivity.newIntent(this, state))
+		val options = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+			ActivityOptions.makeClipRevealAnimation(
+				fab, 0, 0, fab.measuredWidth, fab.measuredHeight
+			)
+		} else {
+			ActivityOptions.makeScaleUpAnimation(
+				fab, 0, 0, fab.measuredWidth, fab.measuredHeight
+			)
+		}
+		startActivity(ReaderActivity.newIntent(this, state), options?.toBundle())
 	}
 
 	override fun onError(e: Throwable) {

app/src/main/java/org/koitharu/kotatsu/ui/main/list/MangaListFragment.kt

@@ -64,6 +64,9 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		recyclerView_filter.addItemDecoration(ItemTypeDividerDecoration(view.context))
 		recyclerView_filter.addItemDecoration(SectionItemDecoration(false, this))
 		settings.subscribe(this)
+		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
+			onRequestMoreItems(0)
+		}
 	}
 
 	override fun onDestroyView() {
@@ -72,13 +75,6 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		super.onDestroyView()
 	}
 
-	override fun onActivityCreated(savedInstanceState: Bundle?) {
-		super.onActivityCreated(savedInstanceState)
-		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
-			onRequestMoreItems(0)
-		}
-	}
-
 	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
 		inflater.inflate(R.menu.opt_list, menu)
 		super.onCreateOptionsMenu(menu, inflater)
@@ -237,6 +233,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 			ListMode.GRID -> GridLayoutManager(ctx, UiUtils.resolveGridSpanCount(ctx))
 			else -> LinearLayoutManager(ctx)
 		}
+		recyclerView.recycledViewPool.clear()
 		recyclerView.adapter = adapter
 		recyclerView.addItemDecoration(
 			when (mode) {

app/src/main/java/org/koitharu/kotatsu/ui/main/list/MangaListSheet.kt

@@ -57,6 +57,9 @@ abstract class MangaListSheet<E> : BaseBottomSheet(R.layout.sheet_list), MangaLi
 			textView_title.isVisible = false
 			appbar.elevation = resources.getDimension(R.dimen.elevation_large)
 		}
+		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
+			onRequestMoreItems(0)
+		}
 	}
 
 	override fun onDestroyView() {
@@ -65,13 +68,6 @@ abstract class MangaListSheet<E> : BaseBottomSheet(R.layout.sheet_list), MangaLi
 		super.onDestroyView()
 	}
 
-	override fun onActivityCreated(savedInstanceState: Bundle?) {
-		super.onActivityCreated(savedInstanceState)
-		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
-			onRequestMoreItems(0)
-		}
-	}
-
 	protected fun setTitle(title: CharSequence) {
 		toolbar.title = title
 		textView_title.text = title

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/FavouritesListFragment.kt

@@ -6,11 +6,11 @@ import android.view.MenuItem
 import kotlinx.android.synthetic.main.fragment_list.*
 import moxy.ktx.moxyPresenter
 import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.ui.main.list.MangaListFragment
 import org.koitharu.kotatsu.ui.main.list.MangaListView
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.CategoriesActivity
 
-class FavouritesListFragment : MangaListFragment<Unit>(), MangaListView<Unit>{
+class FavouritesListFragment : MangaListFragment<Unit>(), MangaListView<Unit> {
 
 	private val presenter by moxyPresenter(factory = ::FavouritesListPresenter)
 
@@ -19,12 +19,17 @@ class FavouritesListFragment : MangaListFragment<Unit>(), MangaListView<Unit>{
 	}
 
 	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
-//		inflater.inflate(R.menu.opt_history, menu)
+		inflater.inflate(R.menu.opt_favourites, menu)
 		super.onCreateOptionsMenu(menu, inflater)
 	}
 
-	override fun onOptionsItemSelected(item: MenuItem) = when(item.itemId) {
-
+	override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
+		R.id.action_categories -> {
+			context?.let {
+				startActivity(CategoriesActivity.newIntent(it))
+			}
+			true
+		}
 		else -> super.onOptionsItemSelected(item)
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/CategoriesActivity.kt

@@ -0,0 +1,113 @@
+package org.koitharu.kotatsu.ui.main.list.favourites.categories
+
+import android.content.Context
+import android.content.Intent
+import android.content.res.ColorStateList
+import android.graphics.Color
+import android.os.Bundle
+import android.text.InputType
+import android.view.View
+import androidx.appcompat.app.AlertDialog
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.snackbar.Snackbar
+import kotlinx.android.synthetic.main.activity_categories.*
+import moxy.ktx.moxyPresenter
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.BaseActivity
+import org.koitharu.kotatsu.ui.common.dialog.TextInputDialog
+import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
+import org.koitharu.kotatsu.utils.ext.getDisplayMessage
+import org.koitharu.kotatsu.utils.ext.showPopupMenu
+
+class CategoriesActivity : BaseActivity(), OnRecyclerItemClickListener<FavouriteCategory>,
+	FavouriteCategoriesView, View.OnClickListener {
+
+	private val presenter by moxyPresenter(factory = ::FavouriteCategoriesPresenter)
+
+	private lateinit var adapter: CategoriesAdapter
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		setContentView(R.layout.activity_categories)
+		supportActionBar?.setDisplayHomeAsUpEnabled(true)
+		fab_add.imageTintList = ColorStateList.valueOf(Color.WHITE)
+		adapter = CategoriesAdapter(this)
+		recyclerView.addItemDecoration(DividerItemDecoration(this, RecyclerView.VERTICAL))
+		recyclerView.adapter = adapter
+		fab_add.setOnClickListener(this)
+	}
+
+	override fun onClick(v: View) {
+		when (v.id) {
+			R.id.fab_add -> createCategory()
+		}
+	}
+
+	override fun onItemClick(item: FavouriteCategory, position: Int, view: View) {
+		view.showPopupMenu(R.menu.popup_category) {
+			when (it.itemId) {
+				R.id.action_remove -> deleteCategory(item)
+				R.id.action_rename -> renameCategory(item)
+			}
+			true
+		}
+	}
+
+	override fun onCategoriesChanged(categories: List<FavouriteCategory>) {
+		adapter.replaceData(categories)
+		textView_holder.isVisible = categories.isEmpty()
+	}
+
+	override fun onCheckedCategoriesChanged(checkedIds: Set<Int>) = Unit
+
+	override fun onError(e: Throwable) {
+		Snackbar.make(recyclerView, e.getDisplayMessage(resources), Snackbar.LENGTH_LONG)
+			.show()
+	}
+
+	private fun deleteCategory(category: FavouriteCategory) {
+		AlertDialog.Builder(this)
+			.setMessage(getString(R.string.category_delete_confirm, category.title))
+			.setTitle(R.string.remove_category)
+			.setNegativeButton(android.R.string.cancel, null)
+			.setPositiveButton(R.string.remove) { _, _ ->
+				presenter.deleteCategory(category.id)
+			}.create()
+			.show()
+	}
+
+	private fun renameCategory(category: FavouriteCategory) {
+		TextInputDialog.Builder(this)
+			.setTitle(R.string.rename)
+			.setText(category.title)
+			.setHint(R.string.enter_category_name)
+			.setInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME or InputType.TYPE_TEXT_FLAG_CAP_SENTENCES)
+			.setNegativeButton(android.R.string.cancel)
+			.setMaxLength(12, false)
+			.setPositiveButton(R.string.rename) { _, name ->
+				presenter.renameCategory(category.id, name)
+			}.create()
+			.show()
+	}
+
+	private fun createCategory() {
+		TextInputDialog.Builder(this)
+			.setTitle(R.string.add_new_category)
+			.setHint(R.string.enter_category_name)
+			.setInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME or InputType.TYPE_TEXT_FLAG_CAP_SENTENCES)
+			.setNegativeButton(android.R.string.cancel)
+			.setMaxLength(12, false)
+			.setPositiveButton(R.string.add) { _, name ->
+				presenter.createCategory(name)
+			}.create()
+			.show()
+	}
+
+	companion object {
+
+		fun newIntent(context: Context) = Intent(context, CategoriesActivity::class.java)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/CategoriesAdapter.kt

@@ -1,46 +1,17 @@
 package org.koitharu.kotatsu.ui.main.list.favourites.categories
 
-import android.util.SparseBooleanArray
 import android.view.ViewGroup
-import android.widget.Checkable
-import androidx.core.util.set
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.ui.common.list.BaseRecyclerAdapter
-import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
+import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.select.CategoryCheckableHolder
 
-class CategoriesAdapter(private val listener: OnCategoryCheckListener) :
-	BaseRecyclerAdapter<FavouriteCategory, Boolean>() {
+class CategoriesAdapter(onItemClickListener: OnRecyclerItemClickListener<FavouriteCategory>? = null) :
+	BaseRecyclerAdapter<FavouriteCategory, Unit>(onItemClickListener) {
 
-	private val checkedIds = SparseBooleanArray()
-
-	fun setCheckedIds(ids: Iterable<Int>) {
-		checkedIds.clear()
-		ids.forEach {
-			checkedIds[it] = true
-		}
-		notifyDataSetChanged()
-	}
-
-	override fun getExtra(item: FavouriteCategory, position: Int) =
-		checkedIds.get(item.id.toInt(), false)
-
-	override fun onCreateViewHolder(parent: ViewGroup) =
-		CategoryHolder(
-			parent
-		)
+	override fun onCreateViewHolder(parent: ViewGroup) = CategoryHolder(parent)
 
 	override fun onGetItemId(item: FavouriteCategory) = item.id
 
-	override fun onViewHolderCreated(holder: BaseViewHolder<FavouriteCategory, Boolean>) {
-		super.onViewHolderCreated(holder)
-		holder.itemView.setOnClickListener {
-			if (it !is Checkable) return@setOnClickListener
-			it.toggle()
-			if (it.isChecked) {
-				listener.onCategoryChecked(holder.requireData())
-			} else {
-				listener.onCategoryUnchecked(holder.requireData())
-			}
-		}
-	}
+	override fun getExtra(item: FavouriteCategory, position: Int) = Unit
 }

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/CategoryHolder.kt

@@ -1,16 +1,15 @@
 package org.koitharu.kotatsu.ui.main.list.favourites.categories
 
 import android.view.ViewGroup
-import kotlinx.android.synthetic.main.item_category_checkable.*
+import kotlinx.android.synthetic.main.item_category.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 
 class CategoryHolder(parent: ViewGroup) :
-	BaseViewHolder<FavouriteCategory, Boolean>(parent, R.layout.item_category_checkable) {
+	BaseViewHolder<FavouriteCategory, Unit>(parent, R.layout.item_category) {
 
-	override fun onBind(data: FavouriteCategory, extra: Boolean) {
-		checkedTextView.text = data.title
-		checkedTextView.isChecked = extra
+	override fun onBind(data: FavouriteCategory, extra: Unit) {
+		textView.text = data.title
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/FavouriteCategoriesPresenter.kt

@@ -70,10 +70,44 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 		}
 	}
 
-	fun addToCategory(manga: Manga, categoryId: Long) {
+	fun renameCategory(id: Long, name: String) {
 		presenterScope.launch {
 			try {
 				val categories = withContext(Dispatchers.IO) {
+					repository.renameCategory(id, name)
+					repository.getAllCategories()
+				}
+				viewState.onCategoriesChanged(categories)
+			} catch (e: Exception) {
+				if (BuildConfig.DEBUG) {
+					e.printStackTrace()
+				}
+				viewState.onError(e)
+			}
+		}
+	}
+
+	fun deleteCategory(id: Long) {
+		presenterScope.launch {
+			try {
+				val categories = withContext(Dispatchers.IO) {
+					repository.removeCategory(id)
+					repository.getAllCategories()
+				}
+				viewState.onCategoriesChanged(categories)
+			} catch (e: Exception) {
+				if (BuildConfig.DEBUG) {
+					e.printStackTrace()
+				}
+				viewState.onError(e)
+			}
+		}
+	}
+
+	fun addToCategory(manga: Manga, categoryId: Long) {
+		presenterScope.launch {
+			try {
+				withContext(Dispatchers.IO) {
 					repository.addToCategory(manga,categoryId)
 				}
 			} catch (e: Exception) {
@@ -88,7 +122,7 @@ class FavouriteCategoriesPresenter : BasePresenter<FavouriteCategoriesView>() {
 	fun removeFromCategory(manga: Manga, categoryId: Long) {
 		presenterScope.launch {
 			try {
-				val categories = withContext(Dispatchers.IO) {
+				withContext(Dispatchers.IO) {
 					repository.removeFromCategory(manga, categoryId)
 				}
 			} catch (e: Exception) {

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/select/CategoriesSelectAdapter.kt

@@ -0,0 +1,46 @@
+package org.koitharu.kotatsu.ui.main.list.favourites.categories.select
+
+import android.util.SparseBooleanArray
+import android.view.ViewGroup
+import android.widget.Checkable
+import androidx.core.util.set
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.BaseRecyclerAdapter
+import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
+
+class CategoriesSelectAdapter(private val listener: OnCategoryCheckListener) :
+	BaseRecyclerAdapter<FavouriteCategory, Boolean>() {
+
+	private val checkedIds = SparseBooleanArray()
+
+	fun setCheckedIds(ids: Iterable<Int>) {
+		checkedIds.clear()
+		ids.forEach {
+			checkedIds[it] = true
+		}
+		notifyDataSetChanged()
+	}
+
+	override fun getExtra(item: FavouriteCategory, position: Int) =
+		checkedIds.get(item.id.toInt(), false)
+
+	override fun onCreateViewHolder(parent: ViewGroup) =
+		CategoryCheckableHolder(
+			parent
+		)
+
+	override fun onGetItemId(item: FavouriteCategory) = item.id
+
+	override fun onViewHolderCreated(holder: BaseViewHolder<FavouriteCategory, Boolean>) {
+		super.onViewHolderCreated(holder)
+		holder.itemView.setOnClickListener {
+			if (it !is Checkable) return@setOnClickListener
+			it.toggle()
+			if (it.isChecked) {
+				listener.onCategoryChecked(holder.requireData())
+			} else {
+				listener.onCategoryUnchecked(holder.requireData())
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/select/CategoryCheckableHolder.kt

@@ -0,0 +1,16 @@
+package org.koitharu.kotatsu.ui.main.list.favourites.categories.select
+
+import android.view.ViewGroup
+import kotlinx.android.synthetic.main.item_category_checkable.*
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
+
+class CategoryCheckableHolder(parent: ViewGroup) :
+	BaseViewHolder<FavouriteCategory, Boolean>(parent, R.layout.item_category_checkable) {
+
+	override fun onBind(data: FavouriteCategory, extra: Boolean) {
+		checkedTextView.text = data.title
+		checkedTextView.isChecked = extra
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/select/FavouriteCategoriesDialog.kt

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.ui.main.list.favourites.categories
+package org.koitharu.kotatsu.ui.main.list.favourites.categories.select
 
 import android.os.Bundle
 import android.text.InputType
@@ -12,6 +12,8 @@ import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.ui.common.BaseBottomSheet
 import org.koitharu.kotatsu.ui.common.dialog.TextInputDialog
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesPresenter
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesView
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 import org.koitharu.kotatsu.utils.ext.withArgs
 
@@ -23,11 +25,13 @@ class FavouriteCategoriesDialog : BaseBottomSheet(R.layout.dialog_favorite_categ
 
 	private val manga get() = arguments?.getParcelable<Manga>(ARG_MANGA)
 
-	private var adapter: CategoriesAdapter? = null
+	private var adapter: CategoriesSelectAdapter? = null
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
-		adapter = CategoriesAdapter(this)
+		adapter =
+			CategoriesSelectAdapter(
+				this)
 		recyclerView_categories.adapter = adapter
 		textView_add.setOnClickListener {
 			createCategory()
@@ -66,6 +70,7 @@ class FavouriteCategoriesDialog : BaseBottomSheet(R.layout.dialog_favorite_categ
 		TextInputDialog.Builder(context ?: return)
 			.setTitle(R.string.add_new_category)
 			.setHint(R.string.enter_category_name)
+			.setMaxLength(12, false)
 			.setInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME or InputType.TYPE_TEXT_FLAG_CAP_SENTENCES)
 			.setNegativeButton(android.R.string.cancel)
 			.setPositiveButton(R.string.add) { _, name ->
@@ -79,8 +84,10 @@ class FavouriteCategoriesDialog : BaseBottomSheet(R.layout.dialog_favorite_categ
 		private const val ARG_MANGA = "manga"
 		private const val TAG = "FavouriteCategoriesDialog"
 
-		fun show(fm: FragmentManager, manga: Manga) = FavouriteCategoriesDialog().withArgs(1) {
+		fun show(fm: FragmentManager, manga: Manga) = FavouriteCategoriesDialog()
+			.withArgs(1) {
 			putParcelable(ARG_MANGA, manga)
-		}.show(fm, TAG)
+		}.show(fm,
+			TAG)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/main/list/favourites/categories/select/OnCategoryCheckListener.kt

@@ -1,4 +1,4 @@
-package org.koitharu.kotatsu.ui.main.list.favourites.categories
+package org.koitharu.kotatsu.ui.main.list.favourites.categories.select
 
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 

app/src/main/java/org/koitharu/kotatsu/ui/main/list/history/HistoryListFragment.kt

@@ -48,7 +48,7 @@ class HistoryListFragment : MangaListFragment<MangaHistory>(), MangaListView<Man
 	}
 
 	override fun setUpEmptyListHolder() {
-		textView_holder.setText(R.string.history_is_empty)
+		textView_holder.setText(R.string.text_history_holder)
 		textView_holder.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0)
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/main/list/local/LocalListFragment.kt

@@ -1,11 +1,12 @@
 package org.koitharu.kotatsu.ui.main.list.local
 
-import android.app.Activity
 import android.content.ActivityNotFoundException
-import android.content.Intent
+import android.net.Uri
 import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
+import androidx.activity.result.ActivityResultCallback
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.fragment_list.*
@@ -17,7 +18,7 @@ import org.koitharu.kotatsu.ui.main.list.MangaListFragment
 import org.koitharu.kotatsu.utils.ext.ellipsize
 import java.io.File
 
-class LocalListFragment : MangaListFragment<File>() {
+class LocalListFragment : MangaListFragment<File>(), ActivityResultCallback<Uri> {
 
 	private val presenter by moxyPresenter(factory = ::LocalListPresenter)
 
@@ -35,11 +36,9 @@ class LocalListFragment : MangaListFragment<File>() {
 	override fun onOptionsItemSelected(item: MenuItem): Boolean {
 		return when (item.itemId) {
 			R.id.action_import -> {
-				val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
-				intent.addCategory(Intent.CATEGORY_OPENABLE)
-				intent.type = "*/*"
 				try {
-					startActivityForResult(intent, REQUEST_IMPORT)
+					registerForActivityResult(ActivityResultContracts.OpenDocument(), this)
+						.launch(arrayOf("*/*"))
 				} catch (e: ActivityNotFoundException) {
 					if (BuildConfig.DEBUG) {
 						e.printStackTrace()
@@ -59,17 +58,13 @@ class LocalListFragment : MangaListFragment<File>() {
 	}
 
 	override fun setUpEmptyListHolder() {
-		textView_holder.setText(R.string.no_saved_manga)
+		textView_holder.setText(R.string.text_local_holder)
 		textView_holder.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0)
 	}
 
-	override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-		super.onActivityResult(requestCode, resultCode, data)
-		when (requestCode) {
-			REQUEST_IMPORT -> if (resultCode == Activity.RESULT_OK) {
-				val uri = data?.data ?: return
-				presenter.importFile(context?.applicationContext ?: return, uri)
-			}
+	override fun onActivityResult(result: Uri?) {
+		if (result != null) {
+			presenter.importFile(context?.applicationContext ?: return, result)
 		}
 	}
 

app/src/main/java/org/koitharu/kotatsu/ui/main/list/local/LocalListPresenter.kt

@@ -15,6 +15,7 @@ import org.koitharu.kotatsu.core.exceptions.UnsupportedFileException
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.parser.LocalMangaRepository
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.ui.common.BasePresenter
@@ -64,7 +65,7 @@ class LocalListPresenter : BasePresenter<MangaListView<File>>() {
 				if (!LocalMangaRepository.isFileSupported(name)) {
 					throw UnsupportedFileException("Unsupported file on $uri")
 				}
-				val dest = context.getExternalFilesDir("manga")?.sub(name)
+				val dest = get<AppSettings>().getStorageDir(context)?.sub(name)
 					?: throw IOException("External files dir unavailable")
 				context.contentResolver.openInputStream(uri)?.use { source ->
 					dest.outputStream().use { output ->

app/src/main/java/org/koitharu/kotatsu/ui/reader/PageLoader.kt

@@ -16,7 +16,7 @@ import kotlin.coroutines.CoroutineContext
 class PageLoader : KoinComponent, CoroutineScope, DisposableHandle {
 
 	private val job = SupervisorJob()
-	private val tasks = HashMap<String, Job>()
+	private val tasks = HashMap<String, Deferred<File>>()
 	private val okHttp by inject<OkHttpClient>()
 	private val cache by inject<PagesCache>()
 
@@ -30,8 +30,13 @@ class PageLoader : KoinComponent, CoroutineScope, DisposableHandle {
 				return it
 			}
 		}
+		val task = tasks[url]?.takeUnless { it.isCancelled }
+		return (task ?: loadAsync(url).also { tasks[url] = it }).await()
+	}
+
+	private fun loadAsync(url: String) = async(Dispatchers.IO) {
 		val uri = Uri.parse(url)
-		return if (uri.scheme == "cbz") {
+		if (uri.scheme == "cbz") {
 			val zip = ZipFile(uri.schemeSpecificPart)
 			val entry = zip.getEntry(uri.fragment)
 			zip.getInputStream(entry).use {
@@ -46,13 +51,12 @@ class PageLoader : KoinComponent, CoroutineScope, DisposableHandle {
 				.cacheControl(CacheUtils.CONTROL_DISABLED)
 				.build()
 			okHttp.newCall(request).await().use { response ->
-				val body = response.body!!
-				val type = body.contentType()
-				check(type?.type == "image") {
-					"Unexpected content type ${type?.type}/${type?.subtype}"
+				val body = response.body
+				checkNotNull(body) {
+					"Null response"
 				}
 				cache.put(url) { out ->
-					response.body!!.byteStream().copyTo(out)
+					body.byteStream().copyTo(out)
 				}
 			}
 		}
@@ -60,5 +64,6 @@ class PageLoader : KoinComponent, CoroutineScope, DisposableHandle {
 
 	override fun dispose() {
 		coroutineContext.cancel()
+		tasks.clear()
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderActivity.kt

@@ -4,12 +4,16 @@ import android.Manifest
 import android.content.Context
 import android.content.Intent
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.view.*
 import android.widget.Toast
+import androidx.activity.result.ActivityResultCallback
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import androidx.core.view.postDelayed
 import androidx.core.view.updatePadding
@@ -42,7 +46,8 @@ import org.koitharu.kotatsu.utils.ext.*
 
 class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnChapterChangeListener,
 	GridTouchHelper.OnGridTouchListener, OnPageSelectListener, ReaderConfigDialog.Callback,
-	ReaderListener, SharedPreferences.OnSharedPreferenceChangeListener {
+	ReaderListener, SharedPreferences.OnSharedPreferenceChangeListener,
+	View.OnApplyWindowInsetsListener, ActivityResultCallback<Boolean> {
 
 	private val presenter by moxyPresenter(factory = ::ReaderPresenter)
 	private val settings by inject<AppSettings>()
@@ -65,7 +70,8 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		toolbar_bottom.inflateMenu(R.menu.opt_reader_bottom)
 		toolbar_bottom.setOnMenuItemClickListener(::onOptionsItemSelected)
 
-		state = savedInstanceState?.getParcelable(EXTRA_STATE)
+		@Suppress("RemoveExplicitTypeArguments")
+		state = savedInstanceState?.getParcelable<ReaderState>(EXTRA_STATE)
 			?: intent.getParcelableExtra<ReaderState>(EXTRA_STATE)
 					?: let {
 				Toast.makeText(this, R.string.error_occurred, Toast.LENGTH_SHORT).show()
@@ -79,10 +85,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 				getString(R.string.chapter_d_of_d, state.chapter?.number ?: 0, size)
 		}
 
-		appbar_bottom.setOnApplyWindowInsetsListener { view, insets ->
-			view.updatePadding(bottom = insets.systemWindowInsetBottom)
-			insets
-		}
+		rootLayout.setOnApplyWindowInsetsListener(this)
 
 		settings.subscribe(this)
 		loadSettings()
@@ -180,13 +183,17 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		}
 		R.id.action_save_page -> {
 			if (reader?.hasItems == true) {
-				requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) {
-					if (it) {
-						presenter.savePage(
-							resolver = contentResolver,
-							page = reader?.currentPage ?: return@requestPermission
-						)
-					}
+				if (ContextCompat.checkSelfPermission(
+						this,
+						Manifest.permission.WRITE_EXTERNAL_STORAGE
+					) == PackageManager.PERMISSION_GRANTED
+				) {
+					onActivityResult(true)
+				} else {
+					registerForActivityResult(
+						ActivityResultContracts.RequestPermission(),
+						this
+					).launch(Manifest.permission.WRITE_EXTERNAL_STORAGE)
 				}
 			} else {
 				showWaitWhileLoading()
@@ -196,6 +203,15 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		else -> super.onOptionsItemSelected(item)
 	}
 
+	override fun onActivityResult(result: Boolean) {
+		if (result) {
+			presenter.savePage(
+				resolver = contentResolver,
+				page = reader?.currentPage ?: return
+			)
+		}
+	}
+
 	override fun saveState(chapterId: Long, page: Int, scroll: Float) {
 		state = state.copy(chapterId = chapterId, page = page, scroll = scroll)
 		ReaderPresenter.saveState(state)
@@ -226,13 +242,11 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 				setUiIsVisible(!appbar_top.isVisible)
 			}
 			GridTouchHelper.AREA_TOP,
-			GridTouchHelper.AREA_LEFT,
-			-> if (isTapSwitchEnabled) {
+			GridTouchHelper.AREA_LEFT -> if (isTapSwitchEnabled) {
 				reader?.switchPageBy(-1)
 			}
 			GridTouchHelper.AREA_BOTTOM,
-			GridTouchHelper.AREA_RIGHT,
-			-> if (isTapSwitchEnabled) {
+			GridTouchHelper.AREA_RIGHT -> if (isTapSwitchEnabled) {
 				reader?.switchPageBy(1)
 			}
 		}
@@ -270,15 +284,13 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		KeyEvent.KEYCODE_SPACE,
 		KeyEvent.KEYCODE_PAGE_DOWN,
 		KeyEvent.KEYCODE_DPAD_DOWN,
-		KeyEvent.KEYCODE_DPAD_RIGHT,
-		-> {
+		KeyEvent.KEYCODE_DPAD_RIGHT -> {
 			reader?.switchPageBy(1)
 			true
 		}
 		KeyEvent.KEYCODE_PAGE_UP,
 		KeyEvent.KEYCODE_DPAD_UP,
-		KeyEvent.KEYCODE_DPAD_LEFT,
-		-> {
+		KeyEvent.KEYCODE_DPAD_LEFT -> {
 			reader?.switchPageBy(-1)
 			true
 		}
@@ -356,6 +368,11 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 		}
 	}
 
+	override fun onApplyWindowInsets(v: View, insets: WindowInsets): WindowInsets {
+		appbar_top.updatePadding(top = insets.systemWindowInsetTop)
+		appbar_bottom.updatePadding(bottom = insets.systemWindowInsetBottom)
+		return insets.consumeSystemWindowInsets()
+	}
 
 	private fun loadSettings() {
 		settings.readerPageSwitch.let {

app/src/main/java/org/koitharu/kotatsu/ui/reader/SimpleSettingsActivity.kt

@@ -4,9 +4,11 @@ import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import androidx.fragment.app.commit
+import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.ui.common.BaseActivity
 import org.koitharu.kotatsu.ui.settings.MainSettingsFragment
+import org.koitharu.kotatsu.ui.settings.NetworkSettingsFragment
 import org.koitharu.kotatsu.ui.settings.ReaderSettingsFragment
 
 class SimpleSettingsActivity : BaseActivity() {
@@ -15,10 +17,10 @@ class SimpleSettingsActivity : BaseActivity() {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_settings_simple)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-		val section = intent?.getIntExtra(EXTRA_SECTION, 0)
 		supportFragmentManager.commit {
-			replace(R.id.container, when(section) {
-				SECTION_READER -> ReaderSettingsFragment()
+			replace(R.id.container, when(intent?.action) {
+				Intent.ACTION_MANAGE_NETWORK_USAGE -> NetworkSettingsFragment()
+				ACTION_READER -> ReaderSettingsFragment()
 				else -> MainSettingsFragment()
 			})
 		}
@@ -26,10 +28,9 @@ class SimpleSettingsActivity : BaseActivity() {
 
 	companion object {
 
-		private const val EXTRA_SECTION = "section"
-		private const val SECTION_READER = 1
+		private const val ACTION_READER = "${BuildConfig.APPLICATION_ID}.action.MANAGE_READER_SETTINGS"
 
 		fun newReaderSettingsIntent(context: Context) = Intent(context, SimpleSettingsActivity::class.java)
-			.putExtra(EXTRA_SECTION, SECTION_READER)
+			.setAction(ACTION_READER)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/base/AbstractReader.kt

@@ -46,10 +46,6 @@ abstract class AbstractReader(contentLayoutId: Int) : BaseFragment(contentLayout
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
 		adapter = onCreateAdapter(pages)
-	}
-
-	override fun onActivityCreated(savedInstanceState: Bundle?) {
-		super.onActivityCreated(savedInstanceState)
 		@Suppress("RemoveExplicitTypeArguments")
 		val state = savedInstanceState?.getParcelable<ReaderState>(ARG_STATE)
 			?: requireArguments().getParcelable<ReaderState>(ARG_STATE)!!

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PageAnimTransformer.kt

@@ -0,0 +1,36 @@
+package org.koitharu.kotatsu.ui.reader.standard
+
+import android.view.View
+import androidx.viewpager2.widget.ViewPager2
+
+class PageAnimTransformer : ViewPager2.PageTransformer {
+
+	override fun transformPage(page: View, position: Float) {
+		page.apply {
+			val pageWidth = width
+			when {
+				position < -1 -> alpha = 0f
+				position <= 0 -> { // [-1,0]
+					alpha = 1f
+					translationX = 0f
+					translationZ = 0f
+					scaleX = 1 + FACTOR * position
+					scaleY = 1f
+				}
+				position <= 1 -> { // (0,1]
+					alpha = 1f
+					translationX = pageWidth * -position
+					translationZ = -1f
+					scaleX = 1f
+					scaleY = 1f
+				}
+				else -> alpha = 0f
+			}
+		}
+	}
+
+	private companion object {
+
+		const val FACTOR = 0.1f
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PageHolder.kt

@@ -9,6 +9,7 @@ import kotlinx.android.synthetic.main.item_page.*
 import kotlinx.coroutines.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 import org.koitharu.kotatsu.ui.reader.PageLoader
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
@@ -43,7 +44,8 @@ class PageHolder(parent: ViewGroup, private val loader: PageLoader) :
 			ssiv.recycle()
 			try {
 				val uri = withContext(Dispatchers.IO) {
-					loader.loadFile(data.url, force)
+					val pageUrl = MangaProviderFactory.create(data.source).getPageFullUrl(data)
+					loader.loadFile(pageUrl, force)
 				}.toUri()
 				ssiv.setImage(ImageSource.uri(uri))
 			} catch (e: CancellationException) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/standard/PagerReaderFragment.kt

@@ -1,10 +1,14 @@
 package org.koitharu.kotatsu.ui.reader.standard
 
+import android.content.Context
+import android.content.SharedPreferences
 import android.os.Bundle
 import android.view.View
 import kotlinx.android.synthetic.main.fragment_reader_standard.*
+import org.koin.android.ext.android.inject
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.ui.reader.ReaderState
 import org.koitharu.kotatsu.ui.reader.base.AbstractReader
 import org.koitharu.kotatsu.ui.reader.base.BaseReaderAdapter
@@ -12,19 +16,34 @@ import org.koitharu.kotatsu.ui.reader.base.GroupedList
 import org.koitharu.kotatsu.utils.ext.doOnPageChanged
 import org.koitharu.kotatsu.utils.ext.withArgs
 
-class PagerReaderFragment : AbstractReader(R.layout.fragment_reader_standard) {
+class PagerReaderFragment : AbstractReader(R.layout.fragment_reader_standard),
+	SharedPreferences.OnSharedPreferenceChangeListener {
 
 	private var paginationListener: PagerPaginationListener? = null
+	private val settings by inject<AppSettings>()
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
 		paginationListener = PagerPaginationListener(adapter!!, 2, this)
 		pager.adapter = adapter
+		if (settings.readerAnimation) {
+			pager.setPageTransformer(PageAnimTransformer())
+		}
 		pager.offscreenPageLimit = 2
 		pager.registerOnPageChangeCallback(paginationListener!!)
 		pager.doOnPageChanged(::notifyPageChanged)
 	}
 
+	override fun onAttach(context: Context) {
+		super.onAttach(context)
+		settings.subscribe(this)
+	}
+
+	override fun onDetach() {
+		settings.unsubscribe(this)
+		super.onDetach()
+	}
+
 	override fun onDestroyView() {
 		paginationListener = null
 		super.onDestroyView()
@@ -47,6 +66,18 @@ class PagerReaderFragment : AbstractReader(R.layout.fragment_reader_standard) {
 
 	override fun restorePageScroll(position: Int, scroll: Float) = Unit
 
+	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+		when (key) {
+			getString(R.string.key_reader_animation) -> {
+				if (settings.readerAnimation) {
+					pager.setPageTransformer(PageAnimTransformer())
+				} else {
+					pager.setPageTransformer(null)
+				}
+			}
+		}
+	}
+
 	companion object {
 
 		fun newInstance(state: ReaderState) = PagerReaderFragment().withArgs(1) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/thumbnails/PageThumbnailHolder.kt

@@ -3,7 +3,7 @@ package org.koitharu.kotatsu.ui.reader.thumbnails
 import android.view.ViewGroup
 import androidx.core.net.toUri
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import coil.size.PixelSize
 import coil.size.Size
 import kotlinx.android.synthetic.main.item_page_thumb.*
@@ -38,9 +38,10 @@ class PageThumbnailHolder(parent: ViewGroup, private val scope: CoroutineScope)
 					val pageUrl = MangaProviderFactory.create(data.source).getPageFullUrl(data)
 					extra[pageUrl]?.toUri()?.toString() ?: pageUrl
 				}
-				val drawable = Coil.get(url) {
-					size(thumbSize)
-				}
+				val drawable = Coil.execute(GetRequestBuilder(context)
+					.data(url)
+					.size(thumbSize)
+					.build()).drawable
 				withContext(Dispatchers.Main) {
 					imageView_thumb.setImageDrawable(drawable)
 				}

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonFrameLayout.kt

@@ -1,41 +1,17 @@
 package org.koitharu.kotatsu.ui.reader.wetoon
 
 import android.content.Context
-import android.graphics.RectF
 import android.util.AttributeSet
 import android.widget.FrameLayout
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import kotlinx.android.synthetic.main.item_page_webtoon.view.*
 import org.koitharu.kotatsu.R
 
 class WebtoonFrameLayout @JvmOverloads constructor(
 	context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
 ) : FrameLayout(context, attrs, defStyleAttr) {
 
-	private val pan = RectF()
-
 	private val target by lazy {
-		findViewById<SubsamplingScaleImageView>(R.id.ssiv)
+		findViewById<WebtoonImageView>(R.id.ssiv)
 	}
 
-	fun dispatchVerticalScroll(dy: Int): Int {
-		target.getPanRemaining(pan)
-		val c = target.center ?: return 0
-		val s = target.scale
-		return when {
-			dy > 0 -> {
-				val delta = minOf(pan.bottom.toInt(), dy)
-				c.offset(0f, delta.toFloat() / s)
-				target.setScaleAndCenter(s, c)
-				delta
-			}
-			dy < 0 -> {
-				val delta = minOf(pan.top.toInt(), -dy)
-				c.offset(0f, -delta.toFloat() / s)
-				target.setScaleAndCenter(s, c)
-				-delta
-			}
-			else -> 0
-		}
-	}
+	fun dispatchVerticalScroll(dy: Int) = target.dispatchVerticalScroll(dy)
 }

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonHolder.kt

@@ -10,6 +10,7 @@ import kotlinx.android.synthetic.main.item_page_webtoon.*
 import kotlinx.coroutines.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaPage
+import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
 import org.koitharu.kotatsu.ui.reader.PageLoader
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
@@ -42,7 +43,8 @@ class WebtoonHolder(parent: ViewGroup, private val loader: PageLoader) :
 			ssiv.recycle()
 			try {
 				val uri = withContext(Dispatchers.IO) {
-					loader.loadFile(data.url, force)
+					val pageUrl = MangaProviderFactory.create(data.source).getPageFullUrl(data)
+					loader.loadFile(pageUrl, force)
 				}.toUri()
 				ssiv.setImage(ImageSource.uri(uri))
 			} catch (e: CancellationException) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonImageView.kt

@@ -0,0 +1,43 @@
+package org.koitharu.kotatsu.ui.reader.wetoon
+
+import android.content.Context
+import android.graphics.PointF
+import android.graphics.RectF
+import android.util.AttributeSet
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+import org.koitharu.kotatsu.utils.ext.toIntUp
+
+class WebtoonImageView : SubsamplingScaleImageView {
+
+	constructor(context: Context?) : super(context)
+	constructor(context: Context?, attr: AttributeSet?) : super(context, attr)
+
+	private val pan = RectF()
+	private val ct = PointF()
+
+	fun dispatchVerticalScroll(dy: Int): Int {
+		if (!isReady) {
+			return 0
+		}
+		getPanRemaining(pan)
+		// pan.offset(0f, -nonConsumedScroll.toFloat())
+		ct.set(width / 2f, height / 2f)
+		viewToSourceCoord(ct.x, ct.y, ct) ?: return 0
+		val s = scale
+		return when {
+			dy > 0 -> {
+				val delta = minOf(pan.bottom.toIntUp(), dy)
+				ct.offset(0f, delta.toFloat() / s)
+				setScaleAndCenter(s, ct)
+				delta
+			}
+			dy < 0 -> {
+				val delta = minOf(pan.top.toInt(), -dy)
+				ct.offset(0f, -delta.toFloat() / s)
+				setScaleAndCenter(s, ct)
+				-delta
+			}
+			else -> 0
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/reader/wetoon/WebtoonRecyclerView.kt

@@ -2,16 +2,27 @@ package org.koitharu.kotatsu.ui.reader.wetoon
 
 import android.content.Context
 import android.util.AttributeSet
-import android.view.Gravity
-import android.view.View
+import androidx.core.view.ViewCompat
 import androidx.core.view.children
 import androidx.recyclerview.widget.RecyclerView
-import kotlin.math.sign
 
 class WebtoonRecyclerView @JvmOverloads constructor(
 	context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
 ) : RecyclerView(context, attrs, defStyleAttr) {
 
+	override fun startNestedScroll(axes: Int) = startNestedScroll(axes, ViewCompat.TYPE_TOUCH)
+
+	override fun startNestedScroll(axes: Int, type: Int): Boolean {
+		return true
+	}
+
+	override fun dispatchNestedPreScroll(
+		dx: Int,
+		dy: Int,
+		consumed: IntArray?,
+		offsetInWindow: IntArray?
+	) = dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow, ViewCompat.TYPE_TOUCH)
+
 	override fun dispatchNestedPreScroll(
 		dx: Int,
 		dy: Int,
@@ -20,21 +31,11 @@ class WebtoonRecyclerView @JvmOverloads constructor(
 		type: Int
 	): Boolean {
 		val consumedY = consumeVerticalScroll(dy)
-		val superRes = super.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow, type)
-		consumed?.set(1, consumed[1] + consumedY)
-		return superRes || consumedY != 0
-	}
-
-	override fun dispatchNestedPreScroll(
-		dx: Int,
-		dy: Int,
-		consumed: IntArray?,
-		offsetInWindow: IntArray?
-	): Boolean {
-		val consumedY = consumeVerticalScroll(dy)
-		val superRes = super.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow)
-		consumed?.set(1, consumed[1] + consumedY)
-		return superRes || consumedY != 0
+		if (consumed != null) {
+			consumed[0] = 0
+			consumed[1] = consumedY
+		}
+		return consumedY != 0
 	}
 
 	private fun consumeVerticalScroll(dy: Int): Int {

app/src/main/java/org/koitharu/kotatsu/ui/settings/AppUpdateService.kt

@@ -1,10 +1,12 @@
 package org.koitharu.kotatsu.ui.settings
 
+import android.annotation.SuppressLint
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.graphics.BitmapFactory
 import android.net.Uri
 import android.os.Build
@@ -22,8 +24,18 @@ import org.koitharu.kotatsu.core.github.VersionId
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.ui.common.BaseService
 import org.koitharu.kotatsu.utils.FileSizeUtils
+import org.koitharu.kotatsu.utils.ext.byte2HexFormatted
+import java.io.ByteArrayInputStream
+import java.io.InputStream
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+import java.security.cert.CertificateEncodingException
+import java.security.cert.CertificateException
+import java.security.cert.CertificateFactory
+import java.security.cert.X509Certificate
 import java.util.concurrent.TimeUnit
 
+
 class AppUpdateService : BaseService() {
 
 	override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
@@ -92,25 +104,26 @@ class AppUpdateService : BaseService() {
 		)
 		builder.setSmallIcon(R.drawable.ic_stat_update)
 		builder.setAutoCancel(true)
-		builder.setColor(ContextCompat.getColor(this, R.color.blue_primary_dark))
+		builder.color = ContextCompat.getColor(this, R.color.blue_primary_dark)
 		builder.setLargeIcon(BitmapFactory.decodeResource(resources, R.mipmap.ic_launcher))
 		manager.notify(NOTIFICATION_ID, builder.build())
 	}
 
 	companion object {
 
+		private const val CERT_SHA1 = "2C:19:C7:E8:07:61:2B:8E:94:51:1B:FD:72:67:07:64:5D:C2:58:AE"
 		private const val NOTIFICATION_ID = 202
 		private const val CHANNEL_ID = "update"
 		private val PERIOD = TimeUnit.HOURS.toMillis(6)
 
-		fun start(context: Context) {
-			try {
-				context.startService(Intent(context, AppUpdateService::class.java))
-			} catch (_: IllegalStateException) {
-			}
+		fun isUpdateSupported(context: Context): Boolean {
+			return getCertificateSHA1Fingerprint(context) == CERT_SHA1
 		}
 
 		fun startIfRequired(context: Context) {
+			if (!isUpdateSupported(context)) {
+				return
+			}
 			val settings = AppSettings(context)
 			if (settings.appUpdateAuto) {
 				val lastUpdate = settings.appUpdate
@@ -119,5 +132,47 @@ class AppUpdateService : BaseService() {
 				}
 			}
 		}
+
+		private fun start(context: Context) {
+			try {
+				context.startService(Intent(context, AppUpdateService::class.java))
+			} catch (_: IllegalStateException) {
+			}
+		}
+
+		@Suppress("DEPRECATION")
+		@SuppressLint("PackageManagerGetSignatures")
+		private fun getCertificateSHA1Fingerprint(context: Context): String? {
+			val packageInfo = try {
+				context.packageManager.getPackageInfo(
+					context.packageName,
+					PackageManager.GET_SIGNATURES
+				)
+			} catch (e: PackageManager.NameNotFoundException) {
+				e.printStackTrace()
+				return null
+			}
+			val signatures = packageInfo?.signatures
+			val cert: ByteArray = signatures?.firstOrNull()?.toByteArray() ?: return null
+			val input: InputStream = ByteArrayInputStream(cert)
+			val c = try {
+				val cf = CertificateFactory.getInstance("X509")
+				cf.generateCertificate(input) as X509Certificate
+			} catch (e: CertificateException) {
+				e.printStackTrace()
+				return null
+			}
+			return try {
+				val md: MessageDigest = MessageDigest.getInstance("SHA1")
+				val publicKey: ByteArray = md.digest(c.getEncoded())
+				publicKey.byte2HexFormatted()
+			} catch (e: NoSuchAlgorithmException) {
+				e.printStackTrace()
+				null
+			} catch (e: CertificateEncodingException) {
+				e.printStackTrace()
+				null
+			}
+		}
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/settings/MainSettingsFragment.kt

@@ -16,13 +16,17 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.prefs.ListMode
 import org.koitharu.kotatsu.ui.common.BasePreferenceFragment
+import org.koitharu.kotatsu.ui.common.dialog.StorageSelectDialog
 import org.koitharu.kotatsu.ui.main.list.ListModeSelectDialog
 import org.koitharu.kotatsu.ui.settings.utils.MultiSummaryProvider
 import org.koitharu.kotatsu.ui.tracker.TrackWorker
+import org.koitharu.kotatsu.utils.ext.getStorageName
+import java.io.File
 
 
 class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
-	SharedPreferences.OnSharedPreferenceChangeListener {
+	SharedPreferences.OnSharedPreferenceChangeListener,
+	StorageSelectDialog.OnStorageSelectListener {
 
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_main)
@@ -37,15 +41,28 @@ class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
 		}
 		findPreference<MultiSelectListPreference>(R.string.key_reader_switchers)?.summaryProvider =
 			MultiSummaryProvider(R.string.gestures_only)
+		findPreference<Preference>(R.string.key_app_update_auto)?.run {
+			isVisible = AppUpdateService.isUpdateSupported(context)
+		}
+		findPreference<Preference>(R.string.key_local_storage)?.run {
+			summary = settings.getStorageDir(context)?.getStorageName(context)
+				?: getString(R.string.not_available)
+		}
 	}
 
-	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String?) {
 		when (key) {
 			getString(R.string.key_list_mode) -> findPreference<Preference>(R.string.key_list_mode)?.summary =
 				LIST_MODES[settings.listMode]?.let(::getString)
 			getString(R.string.key_theme) -> {
 				AppCompatDelegate.setDefaultNightMode(settings.theme)
 			}
+			getString(R.string.key_local_storage) -> {
+				findPreference<Preference>(R.string.key_local_storage)?.run {
+					summary = settings.getStorageDir(context)?.getStorageName(context)
+						?: getString(R.string.not_available)
+				}
+			}
 		}
 	}
 
@@ -86,10 +103,23 @@ class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
 				}
 				true
 			}
+			getString(R.string.key_local_storage) -> {
+				val ctx = context ?: return false
+				StorageSelectDialog.Builder(ctx, settings.getStorageDir(ctx),this)
+					.setTitle(preference.title)
+					.setNegativeButton(android.R.string.cancel)
+					.create()
+					.show()
+				true
+			}
 			else -> super.onPreferenceTreeClick(preference)
 		}
 	}
 
+	override fun onStorageSelected(file: File) {
+		settings.setStorageDir(context ?: return, file)
+	}
+
 	private companion object {
 
 		val LIST_MODES = arrayMapOf(

app/src/main/java/org/koitharu/kotatsu/ui/settings/NetworkSettingsFragment.kt

@@ -0,0 +1,12 @@
+package org.koitharu.kotatsu.ui.settings
+
+import android.os.Bundle
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.ui.common.BasePreferenceFragment
+
+class NetworkSettingsFragment : BasePreferenceFragment(R.string.settings) {
+
+	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+		//TODO https://developer.android.com/training/basics/network-ops/managing
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/settings/SettingsActivity.kt

@@ -30,6 +30,7 @@ class SettingsActivity : BaseActivity(),
 		}
 	}
 
+	@Suppress("DEPRECATION")
 	override fun onPreferenceStartFragment(caller: PreferenceFragmentCompat, pref: Preference): Boolean {
 		val fm = supportFragmentManager
 		val fragment = fm.fragmentFactory.instantiate(classLoader, pref.fragment)

app/src/main/java/org/koitharu/kotatsu/ui/settings/sources/SourcesAdapter.kt

@@ -47,11 +47,11 @@ class SourcesAdapter(private val onItemClickListener: OnRecyclerItemClickListene
 			settings.hiddenSources = hiddenItems.map { x -> x.name }.toSet()
 		}
 		holder.imageView_config.setOnClickListener { v ->
-			onItemClickListener.onItemClick(holder.requireData(), holder.adapterPosition, v)
+			onItemClickListener.onItemClick(holder.requireData(), holder.bindingAdapterPosition, v)
 		}
 		holder.imageView_handle.setOnTouchListener { v, event ->
 			if (event.actionMasked == MotionEvent.ACTION_DOWN) {
-				onItemClickListener.onItemLongClick(holder.requireData(), holder.adapterPosition, v)
+				onItemClickListener.onItemLongClick(holder.requireData(), holder.bindingAdapterPosition, v)
 			} else {
 				false
 			}

app/src/main/java/org/koitharu/kotatsu/ui/settings/sources/SourcesReorderCallback.kt

@@ -11,8 +11,8 @@ class SourcesReorderCallback : ItemTouchHelper.SimpleCallback(ItemTouchHelper.DO
 		target: RecyclerView.ViewHolder
 	): Boolean {
 		val adapter = recyclerView.adapter as? SourcesAdapter ?: return false
-		val oldPos = viewHolder.adapterPosition
-		val newPos = target.adapterPosition
+		val oldPos = viewHolder.bindingAdapterPosition
+		val newPos = target.bindingAdapterPosition
 		adapter.moveItem(oldPos, newPos)
 		return true
 	}

app/src/main/java/org/koitharu/kotatsu/ui/tracker/TrackWorker.kt

@@ -8,10 +8,9 @@ import android.os.Build
 import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationCompat
 import androidx.core.content.ContextCompat
-import androidx.core.graphics.drawable.toBitmap
 import androidx.work.*
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.koin.core.KoinComponent
@@ -24,6 +23,7 @@ import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.domain.tracking.TrackingRepository
 import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
 import org.koitharu.kotatsu.utils.ext.safe
+import org.koitharu.kotatsu.utils.ext.toBitmapOrNull
 import org.koitharu.kotatsu.utils.ext.toUriOrNull
 import java.util.concurrent.TimeUnit
 
@@ -136,9 +136,9 @@ class TrackWorker(context: Context, workerParams: WorkerParameters) :
 			setContentText(summary)
 			setContentText(manga.title)
 			setNumber(newChapters.size)
-			setLargeIcon(safe {
-				Coil.loader().get(manga.coverUrl).toBitmap()
-			})
+			setLargeIcon(Coil.execute(GetRequestBuilder(applicationContext)
+				.data(manga.coverUrl)
+				.build()).toBitmapOrNull())
 			setSmallIcon(R.drawable.ic_stat_book_plus)
 			val style = NotificationCompat.InboxStyle(this)
 			for (chapter in newChapters) {

app/src/main/java/org/koitharu/kotatsu/ui/utils/AppCrashHandler.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.ui.utils
 
 import android.content.Context
 import android.content.Intent
+import android.util.Log
 import java.io.PrintWriter
 import java.io.StringWriter
 import kotlin.system.exitProcess
@@ -19,9 +20,10 @@ class AppCrashHandler(private val applicationContext: Context) : Thread.Uncaught
 		intent.flags = (Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_NEW_TASK)
 		try {
 			applicationContext.startActivity(intent)
-		} catch (e: Throwable) {
-			e.printStackTrace()
+		} catch (t: Throwable) {
+			t.printStackTrace()
 		}
+		Log.e("CRASH", e.message, e)
 		exitProcess(1)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/widget/WidgetUpdater.kt

@@ -0,0 +1,31 @@
+package org.koitharu.kotatsu.ui.widget
+
+import android.appwidget.AppWidgetManager
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import org.koitharu.kotatsu.domain.favourites.OnFavouritesChangeListener
+import org.koitharu.kotatsu.domain.history.OnHistoryChangeListener
+import org.koitharu.kotatsu.ui.widget.recent.RecentWidgetProvider
+import org.koitharu.kotatsu.ui.widget.shelf.ShelfWidgetProvider
+
+class WidgetUpdater(private val context: Context) : OnFavouritesChangeListener,
+	OnHistoryChangeListener {
+
+	override fun onFavouritesChanged(mangaId: Long) {
+		updateWidget(ShelfWidgetProvider::class.java)
+	}
+
+	override fun onHistoryChanged() {
+		updateWidget(RecentWidgetProvider::class.java)
+	}
+
+	private fun updateWidget(cls: Class<*>) {
+		val intent = Intent(context, cls)
+		intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
+		val ids = AppWidgetManager.getInstance(context)
+			.getAppWidgetIds(ComponentName(context, cls))
+		intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
+		context.sendBroadcast(intent)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/recent/RecentListFactory.kt

@@ -0,0 +1,61 @@
+package org.koitharu.kotatsu.ui.widget.recent
+
+import android.content.Context
+import android.content.Intent
+import android.widget.RemoteViews
+import android.widget.RemoteViewsService
+import coil.Coil
+import coil.request.GetRequestBuilder
+import kotlinx.coroutines.runBlocking
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.Manga
+import org.koitharu.kotatsu.domain.history.HistoryRepository
+import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+import org.koitharu.kotatsu.utils.ext.requireBitmap
+import java.io.IOException
+
+class RecentListFactory(private val context: Context) : RemoteViewsService.RemoteViewsFactory {
+
+	private val dataSet = ArrayList<Manga>()
+
+	override fun onCreate() {
+	}
+
+	override fun getLoadingView() = null
+
+	override fun getItemId(position: Int) = dataSet[position].id
+
+	override fun onDataSetChanged() {
+		dataSet.clear()
+		val data = runBlocking { HistoryRepository().getList(0, 10) }
+		dataSet.addAll(data)
+	}
+
+	override fun hasStableIds() = true
+
+	override fun getViewAt(position: Int): RemoteViews {
+		val views = RemoteViews(context.packageName, R.layout.item_recent)
+		val item = dataSet[position]
+		try {
+			val cover = runBlocking {
+				Coil.execute(GetRequestBuilder(context)
+					.data(item.coverUrl)
+					.build()).requireBitmap()
+			}
+			views.setImageViewBitmap(R.id.imageView_cover, cover)
+		} catch (e: IOException) {
+			views.setImageViewResource(R.id.imageView_cover, R.drawable.ic_placeholder)
+		}
+		val intent = Intent()
+		intent.putExtra(MangaDetailsActivity.EXTRA_MANGA_ID, item.id)
+		views.setOnClickFillInIntent(R.id.imageView_cover, intent)
+		return views
+	}
+
+	override fun getCount() = dataSet.size
+
+	override fun getViewTypeCount() = 1
+
+	override fun onDestroy() {
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/recent/RecentWidgetProvider.kt

@@ -0,0 +1,39 @@
+package org.koitharu.kotatsu.ui.widget.recent
+
+import android.app.PendingIntent
+import android.appwidget.AppWidgetManager
+import android.appwidget.AppWidgetProvider
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.widget.RemoteViews
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+
+class RecentWidgetProvider : AppWidgetProvider() {
+
+	override fun onUpdate(
+		context: Context,
+		appWidgetManager: AppWidgetManager,
+		appWidgetIds: IntArray
+	) {
+		appWidgetIds.forEach { id ->
+			val views = RemoteViews(context.packageName, R.layout.widget_recent)
+			val adapter = Intent(context, RecentWidgetService::class.java)
+			adapter.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id)
+			adapter.data = Uri.parse(adapter.toUri(Intent.URI_INTENT_SCHEME))
+			views.setRemoteAdapter(R.id.stackView, adapter)
+			val intent = Intent(context, MangaDetailsActivity::class.java)
+			intent.action = MangaDetailsActivity.ACTION_MANGA_VIEW
+			views.setPendingIntentTemplate(R.id.stackView, PendingIntent.getActivity(
+				context,
+				0,
+				intent,
+				PendingIntent.FLAG_UPDATE_CURRENT
+			))
+			views.setEmptyView(R.id.stackView, R.id.textView_holder)
+			appWidgetManager.updateAppWidget(id, views)
+		}
+		appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.stackView)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/recent/RecentWidgetService.kt

@@ -0,0 +1,11 @@
+package org.koitharu.kotatsu.ui.widget.recent
+
+import android.content.Intent
+import android.widget.RemoteViewsService
+
+class RecentWidgetService : RemoteViewsService() {
+
+	override fun onGetViewFactory(intent: Intent): RemoteViewsFactory {
+		return RecentListFactory(this)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/CategorySelectAdapter.kt

@@ -0,0 +1,35 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.view.ViewGroup
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.BaseRecyclerAdapter
+import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
+
+class CategorySelectAdapter(onItemClickListener: OnRecyclerItemClickListener<FavouriteCategory>? = null) :
+	BaseRecyclerAdapter<FavouriteCategory, Boolean>(onItemClickListener) {
+
+	var checkedItemId = 0L
+		private set
+
+	fun setCheckedId(id: Long) {
+		val oldId = checkedItemId
+		checkedItemId = id
+		val oldPos = findItemPositionById(oldId)
+		val newPos = findItemPositionById(id)
+		if (newPos != -1) {
+			notifyItemChanged(newPos)
+		}
+		if (oldPos != -1) {
+			notifyItemChanged(oldPos)
+		}
+	}
+
+	override fun getExtra(item: FavouriteCategory, position: Int) =
+		checkedItemId == item.id
+
+	override fun onCreateViewHolder(parent: ViewGroup) = CategorySelectHolder(
+		parent
+	)
+
+	override fun onGetItemId(item: FavouriteCategory) = item.id
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/CategorySelectHolder.kt

@@ -0,0 +1,16 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.view.ViewGroup
+import kotlinx.android.synthetic.main.item_category_checkable.*
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.ui.common.list.BaseViewHolder
+
+class CategorySelectHolder(parent: ViewGroup) :
+	BaseViewHolder<FavouriteCategory, Boolean>(parent, R.layout.item_category_checkable_single) {
+
+	override fun onBind(data: FavouriteCategory, extra: Boolean) {
+		checkedTextView.text = data.title
+		checkedTextView.isChecked = extra
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/ShelfConfigActivity.kt

@@ -0,0 +1,102 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.app.Activity
+import android.appwidget.AppWidgetManager
+import android.content.Intent
+import android.content.res.ColorStateList
+import android.graphics.Color
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.snackbar.Snackbar
+import kotlinx.android.synthetic.main.activity_categories.*
+import moxy.ktx.moxyPresenter
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.FavouriteCategory
+import org.koitharu.kotatsu.core.prefs.AppWidgetConfig
+import org.koitharu.kotatsu.ui.common.BaseActivity
+import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesPresenter
+import org.koitharu.kotatsu.ui.main.list.favourites.categories.FavouriteCategoriesView
+import org.koitharu.kotatsu.utils.ext.getDisplayMessage
+import java.util.*
+import kotlin.collections.ArrayList
+
+class ShelfConfigActivity : BaseActivity(), FavouriteCategoriesView,
+	OnRecyclerItemClickListener<FavouriteCategory> {
+
+	private val presenter by moxyPresenter(factory = ::FavouriteCategoriesPresenter)
+
+	private lateinit var adapter: CategorySelectAdapter
+	private lateinit var config: AppWidgetConfig
+
+	override fun onCreate(savedInstanceState: Bundle?) {
+		super.onCreate(savedInstanceState)
+		setContentView(R.layout.activity_categories)
+		supportActionBar?.setDisplayHomeAsUpEnabled(true)
+		fab_add.imageTintList = ColorStateList.valueOf(Color.WHITE)
+		adapter = CategorySelectAdapter(this)
+		recyclerView.addItemDecoration(DividerItemDecoration(this, RecyclerView.VERTICAL))
+		recyclerView.adapter = adapter
+		fab_add.isVisible = false
+		val appWidgetId = intent?.getIntExtra(
+			AppWidgetManager.EXTRA_APPWIDGET_ID,
+			AppWidgetManager.INVALID_APPWIDGET_ID
+		) ?: AppWidgetManager.INVALID_APPWIDGET_ID
+		if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
+			finish()
+			return
+		}
+		config = AppWidgetConfig.getInstance(this, appWidgetId)
+		adapter.setCheckedId(config.categoryId)
+	}
+
+	override fun onCreateOptionsMenu(menu: Menu?): Boolean {
+		menuInflater.inflate(R.menu.opt_config, menu)
+		return super.onCreateOptionsMenu(menu)
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
+		R.id.action_done -> {
+			config.categoryId = adapter.checkedItemId
+			updateWidget()
+			setResult(
+				Activity.RESULT_OK,
+				Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, config.widgetId)
+			)
+			finish()
+			true
+		}
+		else -> super.onOptionsItemSelected(item)
+	}
+
+	override fun onItemClick(item: FavouriteCategory, position: Int, view: View) {
+		adapter.setCheckedId(item.id)
+	}
+
+	override fun onCategoriesChanged(categories: List<FavouriteCategory>) {
+		val data = ArrayList<FavouriteCategory>(categories.size + 1)
+		data += FavouriteCategory(0L, getString(R.string.favourites), Date())
+		data += categories
+		adapter.replaceData(data)
+	}
+
+	override fun onCheckedCategoriesChanged(checkedIds: Set<Int>) = Unit
+
+	override fun onError(e: Throwable) {
+		Snackbar.make(recyclerView, e.getDisplayMessage(resources), Snackbar.LENGTH_LONG)
+			.show()
+	}
+
+	private fun updateWidget() {
+		val intent = Intent(this, ShelfWidgetProvider::class.java)
+		intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
+		val ids = intArrayOf(config.widgetId)
+		intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
+		sendBroadcast(intent)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/ShelfListFactory.kt

@@ -0,0 +1,65 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.content.Context
+import android.content.Intent
+import android.widget.RemoteViews
+import android.widget.RemoteViewsService
+import coil.Coil
+import coil.request.GetRequestBuilder
+import kotlinx.coroutines.runBlocking
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.Manga
+import org.koitharu.kotatsu.core.prefs.AppWidgetConfig
+import org.koitharu.kotatsu.domain.favourites.FavouritesRepository
+import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+import org.koitharu.kotatsu.utils.ext.requireBitmap
+import java.io.IOException
+
+class ShelfListFactory(private val context: Context, widgetId: Int) : RemoteViewsService.RemoteViewsFactory {
+
+	private val dataSet = ArrayList<Manga>()
+	private val config = AppWidgetConfig.getInstance(context, widgetId)
+
+	override fun onCreate() {
+	}
+
+	override fun getLoadingView() = null
+
+	override fun getItemId(position: Int) = dataSet[position].id
+
+	override fun onDataSetChanged() {
+		dataSet.clear()
+		val data = runBlocking {
+			FavouritesRepository().getManga(config.categoryId, 0)
+		}
+		dataSet.addAll(data)
+	}
+
+	override fun hasStableIds() = true
+
+	override fun getViewAt(position: Int): RemoteViews {
+		val views = RemoteViews(context.packageName, R.layout.item_shelf)
+		val item = dataSet[position]
+		views.setTextViewText(R.id.textView_title, item.title)
+		try {
+			val cover = runBlocking {
+				Coil.execute(GetRequestBuilder(context)
+					.data(item.coverUrl)
+					.build()).requireBitmap()
+			}
+			views.setImageViewBitmap(R.id.imageView_cover, cover)
+		} catch (e: IOException) {
+			views.setImageViewResource(R.id.imageView_cover, R.drawable.ic_placeholder)
+		}
+		val intent = Intent()
+		intent.putExtra(MangaDetailsActivity.EXTRA_MANGA_ID, item.id)
+		views.setOnClickFillInIntent(R.id.rootLayout, intent)
+		return views
+	}
+
+	override fun getCount() = dataSet.size
+
+	override fun getViewTypeCount() = 1
+
+	override fun onDestroy() = Unit
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/ShelfWidgetProvider.kt

@@ -0,0 +1,39 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.app.PendingIntent
+import android.appwidget.AppWidgetManager
+import android.appwidget.AppWidgetProvider
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.widget.RemoteViews
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+
+class ShelfWidgetProvider : AppWidgetProvider() {
+
+	override fun onUpdate(
+		context: Context,
+		appWidgetManager: AppWidgetManager,
+		appWidgetIds: IntArray
+	) {
+		appWidgetIds.forEach { id ->
+			val views = RemoteViews(context.packageName, R.layout.widget_shelf)
+			val adapter = Intent(context, ShelfWidgetService::class.java)
+			adapter.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id)
+			adapter.data = Uri.parse(adapter.toUri(Intent.URI_INTENT_SCHEME))
+			views.setRemoteAdapter(R.id.gridView, adapter)
+			val intent = Intent(context, MangaDetailsActivity::class.java)
+			intent.action = MangaDetailsActivity.ACTION_MANGA_VIEW
+			views.setPendingIntentTemplate(R.id.gridView, PendingIntent.getActivity(
+				context,
+				0,
+				intent,
+				PendingIntent.FLAG_UPDATE_CURRENT
+			))
+			views.setEmptyView(R.id.gridView, R.id.textView_holder)
+			appWidgetManager.updateAppWidget(id, views)
+		}
+		appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.gridView)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/ShelfWidgetService.kt

@@ -0,0 +1,14 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.appwidget.AppWidgetManager
+import android.content.Intent
+import android.widget.RemoteViewsService
+
+class ShelfWidgetService : RemoteViewsService() {
+
+	override fun onGetViewFactory(intent: Intent): RemoteViewsFactory {
+		val widgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
+			AppWidgetManager.INVALID_APPWIDGET_ID)
+		return ShelfListFactory(this, widgetId)
+	}
+}

app/src/main/java/org/koitharu/kotatsu/utils/AlphanumComparator.kt

@@ -16,7 +16,7 @@ class AlphanumComparator : Comparator<String> {
 			val thatChunk = getChunk(s2, s2Length, thatMarker)
 			thatMarker += thatChunk.length
 			// If both chunks contain numeric characters, sort them numerically
-			var result = 0
+			var result: Int
 			if (thisChunk[0].isDigit() && thatChunk[0].isDigit()) { // Simple chunk comparison by length.
 				val thisChunkLength = thisChunk.length
 				result = thisChunkLength - thatChunk.length
@@ -37,8 +37,8 @@ class AlphanumComparator : Comparator<String> {
 		return s1Length - s2Length
 	}
 
-	private fun getChunk(s: String, slength: Int, marker: Int): String {
-		var marker = marker
+	private fun getChunk(s: String, slength: Int, cmarker: Int): String {
+		var marker = cmarker
 		val chunk = StringBuilder()
 		var c = s[marker]
 		chunk.append(c)

app/src/main/java/org/koitharu/kotatsu/utils/CacheUtils.kt

@@ -12,7 +12,6 @@ object CacheUtils {
 
 	@JvmStatic
 	val CONTROL_DISABLED = CacheControl.Builder()
-		.noCache()
 		.noStore()
 		.build()
 

app/src/main/java/org/koitharu/kotatsu/utils/MangaShortcut.kt

@@ -9,17 +9,16 @@ import androidx.annotation.RequiresApi
 import androidx.core.content.pm.ShortcutInfoCompat
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.graphics.drawable.IconCompat
-import androidx.core.graphics.drawable.toBitmap
 import coil.Coil
-import coil.api.get
+import coil.request.GetRequestBuilder
 import coil.size.PixelSize
-import coil.size.Scale
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.domain.MangaDataRepository
 import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+import org.koitharu.kotatsu.utils.ext.requireBitmap
 import org.koitharu.kotatsu.utils.ext.safe
 
 class MangaShortcut(private val manga: Manga) {
@@ -62,15 +61,14 @@ class MangaShortcut(private val manga: Manga) {
 
 	private suspend fun buildShortcutInfo(
 		context: Context,
-		manga: Manga,
+		manga: Manga
 	): ShortcutInfoCompat.Builder {
 		val icon = safe {
 			val size = getIconSize(context)
 			withContext(Dispatchers.IO) {
-				val bmp = Coil.loader().get(manga.coverUrl) {
-					size(size)
-					scale(Scale.FILL)
-				}.toBitmap()
+				val bmp = Coil.execute(GetRequestBuilder(context)
+					.data(manga.coverUrl)
+					.build()).requireBitmap()
 				ThumbnailUtils.extractThumbnail(bmp, size.width, size.height, 0)
 			}
 		}

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

@@ -0,0 +1,20 @@
+package org.koitharu.kotatsu.utils.ext
+
+import androidx.core.graphics.drawable.toBitmap
+import coil.request.ErrorResult
+import coil.request.RequestResult
+import coil.request.SuccessResult
+
+fun RequestResult.requireBitmap() = when(this) {
+	is SuccessResult -> drawable.toBitmap()
+	is ErrorResult -> throw throwable
+}
+
+fun RequestResult.toBitmapOrNull() = when(this) {
+	is SuccessResult -> try {
+		drawable.toBitmap()
+	} catch (_: Throwable) {
+		null
+	}
+	is ErrorResult -> null
+}

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

@@ -1,6 +1,7 @@
 package org.koitharu.kotatsu.utils.ext
 
 import android.content.res.Resources
+import android.util.Log
 import kotlinx.coroutines.delay
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
@@ -43,4 +44,12 @@ fun Throwable.getDisplayMessage(resources: Resources) = when (this) {
 	} else {
 		resources.getString(R.string.error_occurred)
 	}
+}
+
+inline fun <T> measured(tag: String, block: () -> T): T {
+	val time = System.currentTimeMillis()
+	val res = block()
+	val spent = System.currentTimeMillis() - time
+	Log.d("measured", "$tag ${spent.format(1)} ms")
+	return res
 }

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

@@ -1,5 +1,10 @@
 package org.koitharu.kotatsu.utils.ext
 
+import android.content.Context
+import android.os.Build
+import android.os.Environment
+import android.os.storage.StorageManager
+import org.koitharu.kotatsu.R
 import java.io.File
 import java.util.zip.ZipEntry
 import java.util.zip.ZipFile
@@ -22,8 +27,22 @@ fun File.computeSize(): Long = listFiles()?.sumByLong { x ->
 
 inline fun File.findParent(predicate: (File) -> Boolean): File? {
 	var current = this
-	while(!predicate(current)) {
+	while (!predicate(current)) {
 		current = current.parentFile ?: return null
 	}
 	return current
-}
+}
+
+fun File.getStorageName(context: Context): String = safe {
+	val manager = context.getSystemService(Context.STORAGE_SERVICE) as StorageManager
+	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+		manager.getStorageVolume(this)?.getDescription(context)?.let {
+			return@safe it
+		}
+	}
+	when {
+		Environment.isExternalStorageEmulated(this) -> context.getString(R.string.internal_storage)
+		Environment.isExternalStorageRemovable(this) -> context.getString(R.string.external_storage)
+		else -> null
+	}
+} ?: context.getString(R.string.other_storage)

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

@@ -6,7 +6,7 @@ import org.json.JSONObject
 fun <T> JSONArray.map(block: (JSONObject) -> T): List<T> {
 	val len = length()
 	val result = ArrayList<T>(len)
-	for(i in 0 until len) {
+	for (i in 0 until len) {
 		val jo = getJSONObject(i)
 		result.add(block(jo))
 	}
@@ -16,9 +16,24 @@ fun <T> JSONArray.map(block: (JSONObject) -> T): List<T> {
 fun <T> JSONArray.mapIndexed(block: (Int, JSONObject) -> T): List<T> {
 	val len = length()
 	val result = ArrayList<T>(len)
-	for(i in 0 until len) {
+	for (i in 0 until len) {
 		val jo = getJSONObject(i)
 		result.add(block(i, jo))
 	}
 	return result
+}
+
+fun JSONObject.getStringOrNull(name: String): String? = opt(name)?.toString()
+
+operator fun JSONArray.iterator(): Iterator<JSONObject> = JSONIterator(this)
+
+private class JSONIterator(private val array: JSONArray) : Iterator<JSONObject> {
+
+	private val total = array.length()
+	private var index = 0
+
+	override fun hasNext() = index < total - 1
+
+	override fun next(): JSONObject = array.getJSONObject(index++)
+
 }

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

@@ -2,9 +2,11 @@ package org.koitharu.kotatsu.utils.ext
 
 import okhttp3.Response
 import okhttp3.internal.closeQuietly
+import org.json.JSONArray
 import org.json.JSONObject
 import org.jsoup.Jsoup
 import org.jsoup.nodes.Document
+import org.jsoup.select.Elements
 
 fun Response.parseHtml(): Document {
 	try {
@@ -27,4 +29,33 @@ fun Response.parseJson(): JSONObject {
 	} finally {
 		closeQuietly()
 	}
+}
+
+fun Response.parseJsonArray(): JSONArray {
+	try {
+		val string = body?.string() ?: throw NullPointerException("Response body is null")
+		return JSONArray(string)
+	} finally {
+		closeQuietly()
+	}
+}
+
+inline fun Elements.findOwnText(predicate: (String) -> Boolean): String? {
+	for (x in this) {
+		val ownText = x.ownText()
+		if (predicate(ownText)) {
+			return ownText
+		}
+	}
+	return null
+}
+
+inline fun Elements.findText(predicate: (String) -> Boolean): String? {
+	for (x in this) {
+		val text = x.text()
+		if (predicate(text)) {
+			return text
+		}
+	}
+	return null
 }

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

@@ -22,4 +22,13 @@ fun Number.format(decimals: Int = 0, decPoint: Char = '.', thousandsSep: Char? =
 		is Double -> formatter.format(this.toDouble())
 		else -> formatter.format(this.toLong())
 	}
+}
+
+fun Float.toIntUp(): Int {
+	val intValue = toInt()
+	return if (this == intValue.toFloat()) {
+		intValue
+	} else {
+		intValue + 1
+	}
 }