Improve favorite categories screen (fix #1047)

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/ReorderableListAdapter.kt

@@ -71,5 +71,11 @@ open class ReorderableListAdapter<T : ListModel> : ListDelegationAdapter<List<T>
 			val newItem = newList[newItemPosition]
 			return newItem == oldItem
 		}
+
+		override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? {
+			val oldItem = oldList[oldItemPosition]
+			val newItem = newList[newItemPosition]
+			return newItem.getChangePayload(oldItem)
+		}
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/FavouriteCategoriesActivity.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.View
 import android.view.ViewGroup
 import androidx.activity.viewModels
+import androidx.appcompat.view.ActionMode
 import androidx.core.graphics.Insets
 import androidx.core.view.updateLayoutParams
 import androidx.core.view.updatePadding
@@ -100,6 +101,18 @@ class FavouriteCategoriesActivity :
 		return item != null && selectionController.onItemLongClick(item.id)
 	}
 
+	override fun onSupportActionModeStarted(mode: ActionMode) {
+		super.onSupportActionModeStarted(mode)
+		viewBinding.fabAdd.hide()
+		viewModel.setActionsEnabled(false)
+	}
+
+	override fun onSupportActionModeFinished(mode: ActionMode) {
+		super.onSupportActionModeFinished(mode)
+		viewBinding.fabAdd.show()
+		viewModel.setActionsEnabled(true)
+	}
+
 	override fun onShowAllClick(isChecked: Boolean) {
 		viewModel.setAllCategoriesVisible(isChecked)
 	}
@@ -138,6 +151,14 @@ class FavouriteCategoriesActivity :
 		0,
 	) {
 
+		override fun getDragDirs(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder): Int {
+			return if (actionModeDelegate.isActionModeStarted) {
+				0
+			} else {
+				super.getDragDirs(recyclerView, viewHolder)
+			}
+		}
+
 		override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) = Unit
 
 		override fun onMove(

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/FavouritesCategoriesViewModel.kt

@@ -7,6 +7,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.cancelAndJoin
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.mapLatest
@@ -34,13 +35,15 @@ class FavouritesCategoriesViewModel @Inject constructor(
 ) : BaseViewModel() {
 
 	private var commitJob: Job? = null
+	private val isActionsEnabled = MutableStateFlow(true)
 
 	val content = combine(
 		repository.observeCategoriesWithCovers(),
 		observeAllCategories(),
 		settings.observeAsFlow(AppSettings.KEY_ALL_FAVOURITES_VISIBLE) { isAllFavouritesVisible },
-	) { cats, all, showAll ->
+		isActionsEnabled,
-		cats.toUiList(all, showAll)
+	) { cats, all, showAll, hasActions ->
+		cats.toUiList(all, showAll, hasActions)
 	}.withErrorHandling()
 		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Eagerly, listOf(LoadingState))
 
@@ -77,6 +80,10 @@ class FavouritesCategoriesViewModel @Inject constructor(
 		}
 	}
 
+	fun setActionsEnabled(value: Boolean) {
+		isActionsEnabled.value = value
+	}
+
 	fun getCategories(ids: LongSet): ArrayList<FavouriteCategory> {
 		val items = content.requireValue()
 		return items.mapNotNullTo(ArrayList(ids.size)) { item ->
@@ -86,7 +93,8 @@ class FavouritesCategoriesViewModel @Inject constructor(
 
 	private fun Map<FavouriteCategory, List<Cover>>.toUiList(
 		allFavorites: Pair<Int, List<Cover>>,
-		showAll: Boolean
+		showAll: Boolean,
+		hasActions: Boolean,
 	): List<ListModel> {
 		if (isEmpty()) {
 			return listOf(
@@ -104,6 +112,7 @@ class FavouritesCategoriesViewModel @Inject constructor(
 				mangaCount = allFavorites.first,
 				covers = allFavorites.second,
 				isVisible = showAll,
+				isActionsEnabled = hasActions,
 			),
 		)
 		mapTo(result) { (category, covers) ->
@@ -111,6 +120,7 @@ class FavouritesCategoriesViewModel @Inject constructor(
 				mangaCount = covers.size,
 				covers = covers.take(3),
 				category = category,
+				isActionsEnabled = hasActions,
 				isTrackerEnabled = settings.isTrackerEnabled && AppSettings.TRACK_FAVOURITES in settings.trackSources,
 			)
 		}

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/adapter/AllCategoriesListModel.kt

@@ -8,17 +8,17 @@ data class AllCategoriesListModel(
 	val mangaCount: Int,
 	val covers: List<Cover>,
 	val isVisible: Boolean,
+	val isActionsEnabled: Boolean,
 ) : ListModel {
 
 	override fun areItemsTheSame(other: ListModel): Boolean {
 		return other is AllCategoriesListModel
 	}
 
-	override fun getChangePayload(previousState: ListModel): Any? {
+	override fun getChangePayload(previousState: ListModel): Any? = when {
-		return if (previousState is AllCategoriesListModel && previousState.isVisible != isVisible) {
+		previousState !is AllCategoriesListModel -> super.getChangePayload(previousState)
-			ListModelDiffCallback.PAYLOAD_CHECKED_CHANGED
+		previousState.isVisible != isVisible -> ListModelDiffCallback.PAYLOAD_CHECKED_CHANGED
-		} else {
+		previousState.isActionsEnabled != isActionsEnabled -> ListModelDiffCallback.PAYLOAD_ANYTHING_CHANGED
-			super.getChangePayload(previousState)
+		else -> super.getChangePayload(previousState)
-		}
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/adapter/CategoryAD.kt

@@ -68,6 +68,8 @@ fun categoryAD(
 	binding.imageViewHandle.setOnTouchListener(eventListener)
 
 	bind {
+		binding.imageViewHandle.isVisible = item.isActionsEnabled
+		binding.imageViewEdit.isVisible = item.isActionsEnabled
 		binding.textViewTitle.text = item.category.title
 		binding.textViewSubtitle.text = if (item.mangaCount == 0) {
 			getString(R.string.empty)
@@ -138,6 +140,7 @@ fun allCategoriesAD(
 				item.mangaCount,
 			)
 		}
+		binding.imageViewVisible.isVisible = item.isActionsEnabled
 		binding.imageViewVisible.setImageResource(
 			if (item.isVisible) {
 				R.drawable.ic_eye

app/src/main/kotlin/org/koitharu/kotatsu/favourites/ui/categories/adapter/CategoryListModel.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.favourites.ui.categories.adapter
 
 import org.koitharu.kotatsu.core.model.FavouriteCategory
 import org.koitharu.kotatsu.favourites.domain.model.Cover
+import org.koitharu.kotatsu.list.ui.ListModelDiffCallback
 import org.koitharu.kotatsu.list.ui.model.ListModel
 
 class CategoryListModel(
@@ -9,12 +10,19 @@ class CategoryListModel(
 	val covers: List<Cover>,
 	val category: FavouriteCategory,
 	val isTrackerEnabled: Boolean,
+	val isActionsEnabled: Boolean,
 ) : ListModel {
 
 	override fun areItemsTheSame(other: ListModel): Boolean {
 		return other is CategoryListModel && other.category.id == category.id
 	}
 
+	override fun getChangePayload(previousState: ListModel): Any? = when {
+		previousState !is CategoryListModel -> super.getChangePayload(previousState)
+		previousState.isActionsEnabled != isActionsEnabled -> ListModelDiffCallback.PAYLOAD_ANYTHING_CHANGED
+		else -> super.getChangePayload(previousState)
+	}
+
 	override fun equals(other: Any?): Boolean {
 		if (this === other) return true
 		if (javaClass != other?.javaClass) return false
@@ -23,6 +31,7 @@ class CategoryListModel(
 
 		if (mangaCount != other.mangaCount) return false
 		if (isTrackerEnabled != other.isTrackerEnabled) return false
+		if (isActionsEnabled != other.isActionsEnabled) return false
 		if (covers != other.covers) return false
 		if (category.id != other.category.id) return false
 		if (category.title != other.category.title) return false
@@ -36,6 +45,7 @@ class CategoryListModel(
 	override fun hashCode(): Int {
 		var result = mangaCount
 		result = 31 * result + isTrackerEnabled.hashCode()
+		result = 31 * result + isActionsEnabled.hashCode()
 		result = 31 * result + covers.hashCode()
 		result = 31 * result + category.id.hashCode()
 		result = 31 * result + category.title.hashCode()

app/src/main/res/layout-w600dp-land/activity_details.xml

@@ -179,6 +179,7 @@
 				layout="@layout/layout_details_chips"
 				android:layout_width="0dp"
 				android:layout_height="wrap_content"
+				android:layout_marginHorizontal="@dimen/screen_padding"
 				app:layout_constraintEnd_toEndOf="parent"
 				app:layout_constraintStart_toStartOf="parent"
 				app:layout_constraintTop_toBottomOf="@id/barrier_header" />

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

@@ -54,18 +54,17 @@
 		app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior"
 		tools:listitem="@layout/item_category" />
 
-	<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
+	<com.google.android.material.floatingactionbutton.FloatingActionButton
 		android:id="@+id/fab_add"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
 		android:layout_margin="16dp"
 		android:contentDescription="@string/add_new_category"
-		android:text="@string/create_category"
+		android:src="@drawable/ic_add"
 		app:fabSize="normal"
-		app:icon="@drawable/ic_add"
 		app:layout_anchor="@id/recyclerView"
 		app:layout_anchorGravity="bottom|end"
-		app:layout_behavior="org.koitharu.kotatsu.core.ui.util.ShrinkOnScrollBehavior"
+		app:layout_behavior="com.google.android.material.behavior.HideBottomViewOnScrollBehavior"
 		app:layout_dodgeInsetEdges="bottom" />
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>