Add Remove from history action on details activity

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

@@ -7,12 +7,16 @@ import org.koitharu.kotatsu.R
 
 class ReversibleActionObserver(
 	private val snackbarHost: View,
+	private val snackbarAnchor: View? = null,
 ) : FlowCollector<ReversibleAction> {
 
 	override suspend fun emit(value: ReversibleAction) {
 		val handle = value.handle
 		val length = if (handle == null) Snackbar.LENGTH_SHORT else Snackbar.LENGTH_LONG
 		val snackbar = Snackbar.make(snackbarHost, value.stringResId, length)
+		if (snackbarAnchor?.isShown == true) {
+			snackbar.anchorView = snackbarAnchor
+		}
 		if (handle != null) {
 			snackbar.setAction(R.string.undo) { handle.reverseAsync() }
 		}

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsActivity.kt

@@ -138,7 +138,7 @@ class DetailsActivity :
 				},
 			),
 		)
-		viewModel.onActionDone.observeEvent(this, ReversibleActionObserver(viewBinding.containerDetails))
+		viewModel.onActionDone.observeEvent(this, ReversibleActionObserver(viewBinding.containerDetails, viewBinding.layoutBottom))
 		viewModel.onShowTip.observeEvent(this) { showTip() }
 		viewModel.historyInfo.observe(this, ::onHistoryChanged)
 		viewModel.selectedBranch.observe(this) {
@@ -187,6 +187,9 @@ class DetailsActivity :
 			buttonTip = null
 			val menu = PopupMenu(v.context, v)
 			menu.inflate(R.menu.popup_read)
+			menu.menu.findItem(R.id.action_forget)?.isVisible = viewModel.historyInfo.value.run {
+				!isIncognitoMode && history != null
+			}
 			menu.setOnMenuItemClickListener(this)
 			menu.setForceShowIcon(true)
 			menu.show()
@@ -203,6 +206,11 @@ class DetailsActivity :
 				true
 			}
 
+			R.id.action_forget -> {
+				viewModel.removeFromHistory()
+				true
+			}
+
 			R.id.action_pages_thumbs -> {
 				val history = viewModel.historyInfo.value.history
 				PagesThumbnailsSheet.show(

app/src/main/kotlin/org/koitharu/kotatsu/details/ui/DetailsViewModel.kt

@@ -346,6 +346,13 @@ class DetailsViewModel @Inject constructor(
 		settings.closeTip(DetailsActivity.TIP_BUTTON)
 	}
 
+	fun removeFromHistory() {
+		launchJob(Dispatchers.Default) {
+			val handle = historyRepository.delete(setOf(mangaId))
+			onActionDone.call(ReversibleAction(R.string.removed_from_history, handle))
+		}
+	}
+
 	private fun doLoad() = launchLoadingJob(Dispatchers.Default) {
 		detailsLoadUseCase.invoke(intent)
 			.onEachWhile {

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

@@ -12,4 +12,9 @@
 		android:icon="@drawable/ic_grid"
 		android:title="@string/pages" />
 
+	<item
+		android:id="@+id/action_forget"
+		android:icon="@drawable/ic_delete"
+		android:title="@string/remove_from_history" />
+
 </menu>

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

@@ -597,4 +597,5 @@
 	<string name="pages_saving">Saving pages</string>
 	<string name="ask_for_dest_dir_every_time">Ask for the destination dir every time</string>
 	<string name="default_page_save_dir">Default page save directory</string>
+	<string name="remove_from_history">Remove from history</string>
 </resources>