Update history fragment

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

@@ -27,6 +27,9 @@ abstract class HistoryDao {
     @Query("UPDATE history SET page = :page, chapter_id = :chapterId, updated_at = :updatedAt WHERE manga_id = :mangaId")
     abstract suspend fun update(mangaId: Long, page: Int, chapterId: Long, updatedAt: Long): Int
 
+    @Query("DELETE FROM history WHERE manga_id = :mangaId")
+    abstract suspend fun delete(mangaId: Long)
+
     suspend fun update(entity: HistoryEntity) = update(entity.mangaId, entity.page, entity.chapterId, entity.updatedAt)
 
     @Transaction

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

@@ -53,6 +53,11 @@ class HistoryRepository : KoinComponent {
 		notifyHistoryChanged()
 	}
 
+	suspend fun delete(manga: Manga) {
+		db.historyDao().delete(manga.id)
+		notifyHistoryChanged()
+	}
+
 	companion object {
 
 		private val listeners = HashSet<OnHistoryChangeListener>()

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

@@ -2,11 +2,9 @@ package org.koitharu.kotatsu.ui.main.list
 
 import android.content.SharedPreferences
 import android.os.Bundle
-import android.view.Menu
-import android.view.MenuInflater
-import android.view.MenuItem
-import android.view.View
+import android.view.*
 import androidx.annotation.CallSuper
+import androidx.appcompat.widget.PopupMenu
 import androidx.core.view.GravityCompat
 import androidx.core.view.isVisible
 import androidx.drawerlayout.widget.DrawerLayout
@@ -42,7 +40,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 
 	private val settings by inject<AppSettings>()
 
-	private lateinit var adapter: MangaListAdapter
+	private var adapter: MangaListAdapter? = null
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
@@ -65,6 +63,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 	}
 
 	override fun onDestroyView() {
+		adapter = null
 		settings.unsubscribe(this)
 		super.onDestroyView()
 	}
@@ -103,8 +102,23 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		startActivity(MangaDetailsActivity.newIntent(context ?: return, item))
 	}
 
+	override fun onItemLongClick(item: Manga, position: Int, view: View): Boolean {
+		val menu = PopupMenu(context ?: return false, view)
+		onCreatePopupMenu(menu.menuInflater, menu.menu, item)
+		return if (menu.menu.hasVisibleItems()) {
+			menu.setOnMenuItemClickListener {
+				onPopupMenuItemSelected(it, item)
+			}
+			menu.gravity = GravityCompat.END or Gravity.TOP
+			menu.show()
+			true
+		} else {
+			false
+		}
+	}
+
 	override fun onListChanged(list: List<Manga>) {
-		adapter.replaceData(list)
+		adapter?.replaceData(list)
 		if (list.isEmpty()) {
 			setUpEmptyListHolder()
 			layout_holder.isVisible = true
@@ -114,7 +128,20 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 	}
 
 	override fun onListAppended(list: List<Manga>) {
-		adapter.appendData(list)
+		adapter?.appendData(list)
+	}
+
+	@CallSuper
+	override fun onItemRemoved(item: Manga) {
+		adapter?.let {
+			it.removeItem(item)
+			if (it.itemCount == 0) {
+				setUpEmptyListHolder()
+				layout_holder.isVisible = true
+			} else {
+				layout_holder.isVisible = false
+			}
+		}
 	}
 
 	override fun onError(e: Exception) {
@@ -181,7 +208,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 		recyclerView.adapter = null
 		recyclerView.layoutManager = null
 		recyclerView.clearItemDecorations()
-		adapter.listMode = mode
+		adapter?.listMode = mode
 		recyclerView.layoutManager = when (mode) {
 			ListMode.GRID -> GridLayoutManager(ctx, 3)
 			else -> LinearLayoutManager(ctx)
@@ -196,7 +223,7 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 				)
 			}
 		)
-		adapter.notifyDataSetChanged()
+		adapter?.notifyDataSetChanged()
 		recyclerView.firstItem = position
 	}
 
@@ -213,4 +240,8 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list), Mang
 			else -> null
 		}
 	}
+
+	protected open fun onCreatePopupMenu(inflater: MenuInflater, menu: Menu, data: Manga) = Unit
+
+	protected open fun onPopupMenuItemSelected(item: MenuItem, data: Manga) = false
 }

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

@@ -23,4 +23,7 @@ interface MangaListView<E> : MvpView {
 
 	@StateStrategyType(AddToEndSingleStrategy::class)
 	fun onInitFilter(sortOrders: List<SortOrder>, tags: List<MangaTag>, currentFilter: MangaFilter?)
+
+	@StateStrategyType(AddToEndStrategy::class)
+	fun onItemRemoved(item: Manga)
 }

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

@@ -6,6 +6,7 @@ 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
 

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

@@ -3,14 +3,18 @@ package org.koitharu.kotatsu.ui.main.list.history
 import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
+import androidx.appcompat.app.AlertDialog
+import com.google.android.material.snackbar.Snackbar
 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.core.model.MangaHistory
 import org.koitharu.kotatsu.ui.main.list.MangaListFragment
 import org.koitharu.kotatsu.ui.main.list.MangaListView
+import org.koitharu.kotatsu.utils.ext.ellipsize
 
-class HistoryListFragment : MangaListFragment<MangaHistory>(), MangaListView<MangaHistory>{
+class HistoryListFragment : MangaListFragment<MangaHistory>(), MangaListView<MangaHistory> {
 
 	private val presenter by moxyPresenter(factory = ::HistoryListPresenter)
 
@@ -23,12 +27,20 @@ class HistoryListFragment : MangaListFragment<MangaHistory>(), MangaListView<Man
 		super.onCreateOptionsMenu(menu, inflater)
 	}
 
-	override fun onOptionsItemSelected(item: MenuItem) = when(item.itemId) {
-		R.id.action_clear_history -> {
-			presenter.clearHistory()
-			true
+	override fun onOptionsItemSelected(item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.action_clear_history -> {
+				AlertDialog.Builder(context ?: return false)
+					.setTitle(R.string.clear_history)
+					.setMessage(R.string.text_clear_history_prompt)
+					.setNegativeButton(android.R.string.cancel, null)
+					.setPositiveButton(R.string.clear) { _, _ ->
+						presenter.clearHistory()
+					}.show()
+				true
+			}
+			else -> super.onOptionsItemSelected(item)
 		}
-		else -> super.onOptionsItemSelected(item)
 	}
 
 	override fun getTitle(): CharSequence? {
@@ -40,6 +52,31 @@ class HistoryListFragment : MangaListFragment<MangaHistory>(), MangaListView<Man
 		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_history, menu)
+	}
+
+	override fun onPopupMenuItemSelected(item: MenuItem, data: Manga): Boolean {
+		return when (item.itemId) {
+			R.id.action_remove -> {
+				presenter.removeFromHistory(data)
+				true
+			}
+			else -> super.onPopupMenuItemSelected(item, data)
+		}
+	}
+
+	override fun onItemRemoved(item: Manga) {
+		super.onItemRemoved(item)
+		Snackbar.make(
+			recyclerView, getString(
+				R.string._s_removed_from_history,
+				item.title.ellipsize(14)
+			), Snackbar.LENGTH_SHORT
+		).show()
+	}
+
 	companion object {
 
 		fun newInstance() = HistoryListFragment()

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

@@ -5,6 +5,7 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import moxy.InjectViewState
 import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.core.model.Manga
 import org.koitharu.kotatsu.core.model.MangaHistory
 import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.ui.common.BasePresenter
@@ -61,4 +62,19 @@ class HistoryListPresenter : BasePresenter<MangaListView<MangaHistory>>() {
 			}
 		}
 	}
+
+	fun removeFromHistory(manga: Manga) {
+		launch {
+			try {
+				withContext(Dispatchers.IO) {
+					repository.delete(manga)
+				}
+				viewState.onItemRemoved(manga)
+			} catch (e: Exception) {
+				if (BuildConfig.DEBUG) {
+					e.printStackTrace()
+				}
+			}
+		}
+	}
 }

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

@@ -57,4 +57,8 @@ fun String.transliterate(skipMissing: Boolean): String {
 
 fun String.toFileName() = this.transliterate(false)
 	.replace(Regex("[^a-z0-9_\\-]", setOf(RegexOption.IGNORE_CASE)), " ")
-	.replace(Regex("\\s+"), "_")
+	.replace(Regex("\\s+"), "_")
+
+fun String.ellipsize(maxLength: Int) = if (this.length > maxLength) {
+	this.take(maxLength - 1) + Typography.ellipsis
+} else this

app/src/main/res/menu/popup_history.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>

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

@@ -61,4 +61,8 @@
 	<string name="dark">Dark</string>
 	<string name="automatic">Automatic</string>
 	<string name="pages">Pages</string>
+	<string name="clear">Clear</string>
+	<string name="text_clear_history_prompt">Are you rally want to clear all your reading history? This action cannot be undone.</string>
+	<string name="remove">Remove</string>
+	<string name="_s_removed_from_history">\"%s\" removed from history</string>
 </resources>