Shelf app widget

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

@@ -25,8 +25,10 @@ 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.ui.tracker.TrackerJobService
 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
 
@@ -47,6 +49,8 @@ class KotatsuApp : Application() {
 		Thread.setDefaultUncaughtExceptionHandler(AppCrashHandler(applicationContext))
 		TrackerJobService.setup(this)
 		AppCompatDelegate.setDefaultNightMode(AppSettings(this).theme)
+		val widgetUpdater = WidgetUpdater(applicationContext)
+		FavouritesRepository.subscribe(widgetUpdater)
 	}
 
 	private fun initKoin() {

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

@@ -172,7 +172,7 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 	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/widget/WidgetUpdater.kt

@@ -0,0 +1,21 @@
+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.ui.widget.shelf.ShelfWidgetProvider
+
+class WidgetUpdater(private val context: Context) : OnFavouritesChangeListener {
+
+	override fun onFavouritesChanged(mangaId: Long) {
+		val intent = Intent(context, ShelfWidgetProvider::class.java)
+		intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
+		val ids = AppWidgetManager.getInstance(context)
+			.getAppWidgetIds(ComponentName(context, ShelfWidgetProvider::class.java))
+		intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
+		context.sendBroadcast(intent)
+	}
+
+}

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

@@ -0,0 +1,62 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.content.Context
+import android.content.Intent
+import android.widget.RemoteViews
+import android.widget.RemoteViewsService
+import androidx.core.graphics.drawable.toBitmap
+import coil.Coil
+import coil.api.get
+import kotlinx.coroutines.runBlocking
+import okio.IOException
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.Manga
+import org.koitharu.kotatsu.domain.favourites.FavouritesRepository
+import org.koitharu.kotatsu.ui.details.MangaDetailsActivity
+
+class ShelfListFactory(context: Context, private val intent: Intent) : RemoteViewsService.RemoteViewsFactory {
+
+	private val packageName = context.packageName
+
+	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 { FavouritesRepository().getAllManga(0) }
+		dataSet.addAll(data)
+	}
+
+	override fun hasStableIds() = true
+
+	override fun getViewAt(position: Int): RemoteViews {
+		val views = RemoteViews(packageName, R.layout.item_shelf)
+		val item = dataSet[position]
+		views.setTextViewText(R.id.textView_title, item.title)
+		try {
+			val cover = runBlocking {
+				Coil.loader().get(item.coverUrl).toBitmap()
+			}
+			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() {
+	}
+}

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 +1,11 @@
+package org.koitharu.kotatsu.ui.widget.shelf
+
+import android.content.Intent
+import android.widget.RemoteViewsService
+
+class ShelfWidgetService : RemoteViewsService() {
+
+	override fun onGetViewFactory(intent: Intent): RemoteViewsFactory {
+		return ShelfListFactory(this, intent)
+	}
+}