Remove from favourites via popup menu

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

@@ -37,6 +37,9 @@ abstract class FavouritesDao {
 	@Update
 	abstract suspend fun update(favourite: FavouriteEntity): Int
 
+	@Query("DELETE FROM favourites WHERE manga_id = :mangaId")
+	abstract suspend fun delete(mangaId: Long)
+
 	@Query("DELETE FROM favourites WHERE manga_id = :mangaId AND category_id = :categoryId")
 	abstract suspend fun delete(categoryId: Long, mangaId: Long)
 

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

@@ -93,6 +93,11 @@ class FavouritesRepository(private val db: MangaDatabase) {
 		notifyFavouritesChanged(manga.id)
 	}
 
+	suspend fun removeFromFavourites(manga: Manga) {
+		db.favouritesDao.delete(manga.id)
+		notifyFavouritesChanged(manga.id)
+	}
+
 	companion object {
 
 		private val listeners = ArraySet<OnFavouritesChangeListener>()

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

@@ -28,7 +28,7 @@ class MangaListDetailsHolder(
 		imageRequest?.dispose()
 		textView_title.text = data.title
 		textView_subtitle.textAndVisible = data.altTitle
-		imageView_cover.newImageRequest(data.coverUrl)
+		imageRequest = imageView_cover.newImageRequest(data.coverUrl)
 			.placeholder(R.drawable.ic_placeholder)
 			.fallback(R.drawable.ic_placeholder)
 			.error(R.drawable.ic_placeholder)

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

@@ -1,33 +1,54 @@
 package org.koitharu.kotatsu.ui.list.favourites
 
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
 import kotlinx.android.synthetic.main.fragment_list.*
 import moxy.ktx.moxyPresenter
+import org.koin.android.ext.android.get
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.ui.list.MangaListFragment
 import org.koitharu.kotatsu.ui.list.MangaListView
 import org.koitharu.kotatsu.utils.ext.withArgs
 
-class FavouritesListFragment : MangaListFragment<Unit>(),
-	MangaListView<Unit> {
+class FavouritesListFragment : MangaListFragment<Unit>(), MangaListView<Unit> {
 
-	private val presenter by moxyPresenter(factory = ::FavouritesListPresenter)
+	private val presenter by moxyPresenter {
+		FavouritesListPresenter(categoryId, get())
+	}
 
 	private val categoryId: Long
 		get() = arguments?.getLong(ARG_CATEGORY_ID) ?: 0L
 
 	override fun onRequestMoreItems(offset: Int) {
-		presenter.loadList(categoryId, offset)
+		presenter.loadList(offset)
 	}
 
 	override fun setUpEmptyListHolder() {
-		textView_holder.setText(if (categoryId == 0L) {
-			R.string.you_have_not_favourites_yet
-		} else {
-			R.string.favourites_category_empty
-		})
+		textView_holder.setText(
+			if (categoryId == 0L) {
+				R.string.you_have_not_favourites_yet
+			} else {
+				R.string.favourites_category_empty
+			}
+		)
 		textView_holder.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0)
 	}
 
+	override fun onCreatePopupMenu(inflater: MenuInflater, menu: Menu, data: Manga) {
+		super.onCreatePopupMenu(inflater, menu, data)
+		inflater.inflate(R.menu.popup_favourites, menu)
+	}
+
+	override fun onPopupMenuItemSelected(item: MenuItem, data: Manga) = when(item.itemId) {
+		R.id.action_remove -> {
+			presenter.removeFromFavourites(data)
+			true
+		}
+		else -> super.onPopupMenuItemSelected(item, data)
+	}
+
 	companion object {
 
 		private const val ARG_CATEGORY_ID = "category_id"

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

@@ -4,18 +4,19 @@ import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.launch
 import moxy.InjectViewState
 import moxy.presenterScope
-import org.koin.core.component.get
 import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.domain.favourites.FavouritesRepository
 import org.koitharu.kotatsu.ui.base.BasePresenter
 import org.koitharu.kotatsu.ui.list.MangaListView
 
 @InjectViewState
-class FavouritesListPresenter : BasePresenter<MangaListView<Unit>>() {
+class FavouritesListPresenter(
+	private val categoryId: Long,
+	private val repository: FavouritesRepository
+) : BasePresenter<MangaListView<Unit>>() {
 
-	private val repository = get<FavouritesRepository>()
-
-	fun loadList(categoryId: Long, offset: Int) {
+	fun loadList(offset: Int) {
 		presenterScope.launch {
 			viewState.onLoadingStateChanged(true)
 			try {
@@ -44,4 +45,15 @@ class FavouritesListPresenter : BasePresenter<MangaListView<Unit>>() {
 			}
 		}
 	}
+
+	fun removeFromFavourites(manga: Manga) {
+		launchJob {
+			if (categoryId == 0L) {
+				repository.removeFromFavourites(manga)
+			} else {
+				repository.removeFromCategory(manga, categoryId)
+			}
+			viewState.onItemRemoved(manga)
+		}
+	}
 }

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

@@ -31,11 +31,7 @@ fun <T> List<T>.medianOrNull(): T? = when {
 }
 
 inline fun <T, R> Collection<T>.mapToSet(transform: (T) -> R): Set<R> {
-	val destination = ArraySet<R>(size)
-	for (item in this) {
-		destination.add(transform(item))
-	}
-	return destination
+	return mapTo(ArraySet(size), transform)
 }
 
 inline fun <T, R> Collection<T>.mapNotNullToSet(transform: (T) -> R?): Set<R> {

app/src/main/res/menu/popup_favourites.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu
+	xmlns:android="http://schemas.android.com/apk/res/android">
+
+	<item
+		android:id="@+id/action_remove"
+		android:title="@string/remove" />
+
+</menu>