Action mode chapters selection

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

@@ -2,5 +2,5 @@ package org.koitharu.kotatsu.domain.history
 
 enum class ChapterExtra {
 
-	READ, CURRENT, UNREAD, NEW
+	READ, CURRENT, UNREAD, NEW, CHECKED
 }

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

@@ -1,6 +1,8 @@
 package org.koitharu.kotatsu.ui.details
 
+import android.graphics.Color
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import kotlinx.android.synthetic.main.item_chapter.*
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.model.MangaChapter
@@ -14,6 +16,7 @@ class ChapterHolder(parent: ViewGroup) :
 	override fun onBind(data: MangaChapter, extra: ChapterExtra) {
 		textView_title.text = data.name
 		textView_number.text = data.number.toString()
+		imageView_check.isVisible = extra == ChapterExtra.CHECKED
 		when (extra) {
 			ChapterExtra.UNREAD -> {
 				textView_number.setBackgroundResource(R.drawable.bg_badge_default)
@@ -31,6 +34,10 @@ class ChapterHolder(parent: ViewGroup) :
 				textView_number.setBackgroundResource(R.drawable.bg_badge_accent)
 				textView_number.setTextColor(context.getThemeColor(android.R.attr.textColorPrimaryInverse))
 			}
+			ChapterExtra.CHECKED -> {
+				textView_number.setBackgroundResource(R.drawable.bg_badge_accent)
+				textView_number.setTextColor(Color.TRANSPARENT)
+			}
 		}
 	}
 }

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

@@ -10,6 +10,14 @@ import org.koitharu.kotatsu.ui.common.list.OnRecyclerItemClickListener
 class ChaptersAdapter(onItemClickListener: OnRecyclerItemClickListener<MangaChapter>) :
 	BaseRecyclerAdapter<MangaChapter, ChapterExtra>(onItemClickListener) {
 
+	private val checkedIds = HashSet<Long>()
+
+	val checkedItemsCount: Int
+		get() = checkedIds.size
+
+	val checkedItemsIds: Set<Long>
+		get() = checkedIds
+
 	var currentChapterId: Long? = null
 		set(value) {
 			field = value
@@ -26,11 +34,37 @@ class ChaptersAdapter(onItemClickListener: OnRecyclerItemClickListener<MangaChap
 	var currentChapterPosition = RecyclerView.NO_POSITION
 		private set
 
+	fun clearChecked() {
+		checkedIds.clear()
+		notifyDataSetChanged()
+	}
+
+	fun checkAll() {
+		for (item in dataSet) {
+			checkedIds.add(item.id)
+		}
+		notifyDataSetChanged()
+	}
+
+	fun setItemIsChecked(itemId: Long, isChecked: Boolean) {
+		if ((isChecked && checkedIds.add(itemId)) || (!isChecked && checkedIds.remove(itemId))) {
+			val pos = findItemPositionById(itemId)
+			if (pos != RecyclerView.NO_POSITION) {
+				notifyItemChanged(pos)
+			}
+		}
+	}
+
+	fun toggleItemChecked(itemId: Long) {
+		setItemIsChecked(itemId, itemId !in checkedIds)
+	}
+
 	override fun onCreateViewHolder(parent: ViewGroup) = ChapterHolder(parent)
 
 	override fun onGetItemId(item: MangaChapter) = item.id
 
 	override fun getExtra(item: MangaChapter, position: Int): ChapterExtra = when {
+		item.id in checkedIds -> ChapterExtra.CHECKED
 		currentChapterPosition == RecyclerView.NO_POSITION
 				|| currentChapterPosition < position -> if (position >= itemCount - newChaptersCount) {
 			ChapterExtra.NEW

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

@@ -1,11 +1,12 @@
 package org.koitharu.kotatsu.ui.details
 
 import android.app.ActivityOptions
-import android.content.Context
 import android.os.Bundle
+import android.view.Menu
 import android.view.MenuItem
 import android.view.View
-import androidx.appcompat.widget.PopupMenu
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.view.ActionMode
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -21,7 +22,7 @@ import org.koitharu.kotatsu.ui.reader.ReaderActivity
 import org.koitharu.kotatsu.utils.ext.resolveDp
 
 class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsView,
-	OnRecyclerItemClickListener<MangaChapter> {
+	OnRecyclerItemClickListener<MangaChapter>, ActionMode.Callback {
 
 	@Suppress("unused")
 	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
@@ -29,6 +30,7 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	private var manga: Manga? = null
 
 	private lateinit var adapter: ChaptersAdapter
+	private var actionMode: ActionMode? = null
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)
@@ -69,6 +71,15 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	override fun onFavouriteChanged(categories: List<FavouriteCategory>) = Unit
 
 	override fun onItemClick(item: MangaChapter, position: Int, view: View) {
+		if (adapter.checkedItemsCount != 0) {
+			adapter.toggleItemChecked(item.id)
+			if (adapter.checkedItemsCount == 0) {
+				actionMode?.finish()
+			} else {
+				actionMode?.invalidate()
+			}
+			return
+		}
 		val options = ActivityOptions.makeScaleUpAnimation(
 			view,
 			0,
@@ -86,16 +97,13 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	}
 
 	override fun onItemLongClick(item: MangaChapter, position: Int, view: View): Boolean {
-		if (item.source == MangaSource.LOCAL) {
+		if (actionMode == null) {
-			return false
+			actionMode = (activity as? AppCompatActivity)?.startSupportActionMode(this)
 		}
-		return context?.run {
+		return actionMode?.also {
-			val menu = PopupMenu(this, view)
+			adapter.setItemIsChecked(item.id, true)
-			menu.inflate(R.menu.popup_chapter)
+			it.invalidate()
-			menu.setOnMenuItemClickListener(PopupMenuListener(this, manga ?: return false, item))
+		} != null
-			menu.show()
-			true
-		} ?: false
 	}
 
 	private fun scrollToCurrent() {
@@ -107,29 +115,45 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 		}
 	}
 
-	private class PopupMenuListener(
+	override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
-		private val context: Context,
+		return when (item.itemId) {
-		private val manga: Manga,
+			R.id.action_save -> {
-		private val chapter: MangaChapter
+				DownloadService.start(
-	) : PopupMenu.OnMenuItemClickListener {
+					context ?: return false,
-
+					manga ?: return false,
-		override fun onMenuItemClick(item: MenuItem?): Boolean = when (item?.itemId) {
+					adapter.checkedItemsIds
-			R.id.action_save_this -> {
+				)
-				DownloadService.start(context, manga, setOf(chapter.id))
 				true
 			}
-			R.id.action_save_this_next -> {
+			R.id.action_select_all -> {
-				DownloadService.start(context, manga, manga.chapters.orEmpty()
+				adapter.checkAll()
-					.filter { x -> x.number >= chapter.number }.map { x -> x.id })
+				mode.invalidate()
-				true
-			}
-			R.id.action_save_this_prev -> {
-				DownloadService.start(context, manga, manga.chapters.orEmpty()
-					.filter { x -> x.number <= chapter.number }.map { x -> x.id })
 				true
 			}
 			else -> false
 		}
+	}
 
+	override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
+		mode.menuInflater.inflate(R.menu.mode_chapters, menu)
+		menu.findItem(R.id.action_save).isVisible = manga?.source != MangaSource.LOCAL
+		mode.title = manga?.title
+		return true
+	}
+
+	override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
+		val count = adapter.checkedItemsCount
+		mode.subtitle = resources.getQuantityString(
+			R.plurals.chapters_from_x,
+			count,
+			count,
+			adapter.itemCount
+		)
+		return true
+	}
+
+	override fun onDestroyActionMode(mode: ActionMode?) {
+		adapter.clearChecked()
+		actionMode = null
 	}
 }

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

@@ -8,10 +8,13 @@ import android.view.Menu
 import android.view.MenuItem
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.view.ActionMode
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.net.toFile
 import androidx.lifecycle.lifecycleScope
 import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator
 import kotlinx.android.synthetic.main.activity_details.*
 import kotlinx.coroutines.launch
 import moxy.MvpDelegate
@@ -29,7 +32,8 @@ import org.koitharu.kotatsu.utils.MangaShortcut
 import org.koitharu.kotatsu.utils.ShareHelper
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
-class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
+class MangaDetailsActivity : BaseActivity(), MangaDetailsView,
+	TabLayoutMediator.TabConfigurationStrategy {
 
 	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
 
@@ -39,8 +43,8 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_details)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-		pager.adapter = MangaDetailsAdapter(resources, supportFragmentManager)
+		pager.adapter = MangaDetailsAdapter(this)
-		tabs.setupWithViewPager(pager)
+		TabLayoutMediator(tabs, pager, this).attach()
 		if (savedInstanceState?.containsKey(MvpDelegate.MOXY_DELEGATE_TAGS_KEY) != true) {
 			intent?.getParcelableExtra<Manga>(EXTRA_MANGA)?.let {
 				presenter.loadDetails(it, true)
@@ -169,6 +173,24 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView {
 		else -> super.onOptionsItemSelected(item)
 	}
 
+	override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
+		tab.text = when(position) {
+			0 -> getString(R.string.details)
+			1 -> getString(R.string.chapters)
+			else -> null
+		}
+	}
+
+	override fun onSupportActionModeStarted(mode: ActionMode) {
+		super.onSupportActionModeStarted(mode)
+		pager.isUserInputEnabled = false
+	}
+
+	override fun onSupportActionModeFinished(mode: ActionMode) {
+		super.onSupportActionModeFinished(mode)
+		pager.isUserInputEnabled = true
+	}
+
 	companion object {
 
 		private const val EXTRA_MANGA = "manga"

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

@@ -1,24 +1,16 @@
 package org.koitharu.kotatsu.ui.details
 
-import android.content.res.Resources
 import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.FragmentActivity
-import androidx.fragment.app.FragmentPagerAdapter
+import androidx.viewpager2.adapter.FragmentStateAdapter
-import org.koitharu.kotatsu.R
 
-class MangaDetailsAdapter(private val resources: Resources, fm: FragmentManager) : FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
+class MangaDetailsAdapter(activity: FragmentActivity) : FragmentStateAdapter(activity) {
 
-	override fun getCount() = 2
+	override fun getItemCount() = 2
 
-	override fun getItem(position: Int): Fragment = when(position) {
+	override fun createFragment(position: Int): Fragment = when(position) {
 		0 -> MangaDetailsFragment()
 		1 -> ChaptersFragment()
 		else -> throw IndexOutOfBoundsException("No fragment for position $position")
 	}
-
-	override fun getPageTitle(position: Int): CharSequence? = when(position) {
-		0 -> resources.getString(R.string.details)
-		1 -> resources.getString(R.string.chapters)
-		else -> null
-	}
 }

app/src/main/res/drawable/ic_check.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M9,16.17L4.83,12l-1.42,1.41L9,19 21,7l-1.41,-1.41z"/>
+</vector>

app/src/main/res/drawable/ic_save.xml

@@ -0,0 +1,11 @@
+<vector
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:width="24dp"
+	android:height="24dp"
+	android:tint="?colorControlNormal"
+	android:viewportWidth="24"
+	android:viewportHeight="24">
+	<path
+		android:fillColor="@android:color/white"
+		android:pathData="M17,3L5,3c-1.11,0 -2,0.9 -2,2v14c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2L21,7l-4,-4zM19,19L5,19L5,5h11.17L19,7.83L19,19zM12,12c-1.66,0 -3,1.34 -3,3s1.34,3 3,3 3,-1.34 3,-3 -1.34,-3 -3,-3zM6,6h9v4L6,10z" />
+</vector>

app/src/main/res/drawable/ic_select_all.xml

@@ -0,0 +1,11 @@
+<vector
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:width="24dp"
+	android:height="24dp"
+	android:tint="?colorControlNormal"
+	android:viewportWidth="24"
+	android:viewportHeight="24">
+	<path
+		android:fillColor="@android:color/white"
+		android:pathData="M3,5h2L5,3c-1.1,0 -2,0.9 -2,2zM3,13h2v-2L3,11v2zM7,21h2v-2L7,19v2zM3,9h2L5,7L3,7v2zM13,3h-2v2h2L13,3zM19,3v2h2c0,-1.1 -0.9,-2 -2,-2zM5,21v-2L3,19c0,1.1 0.9,2 2,2zM3,17h2v-2L3,15v2zM9,3L7,3v2h2L9,3zM11,21h2v-2h-2v2zM19,13h2v-2h-2v2zM19,21c1.1,0 2,-0.9 2,-2h-2v2zM19,9h2L21,7h-2v2zM19,17h2v-2h-2v2zM15,21h2v-2h-2v2zM15,5h2L17,3h-2v2zM7,17h10L17,7L7,7v10zM9,9h6v6L9,15L9,9z" />
+</vector>

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

@@ -27,7 +27,7 @@
 
 	</com.google.android.material.appbar.AppBarLayout>
 
-	<androidx.viewpager.widget.ViewPager
+	<androidx.viewpager2.widget.ViewPager2
 		android:id="@+id/pager"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"

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

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="@dimen/chapter_list_item_height"
 	android:background="?selectableItemBackground"
-	android:gravity="center_vertical"
-	android:orientation="horizontal"
 	android:paddingStart="12dp"
 	android:paddingEnd="12dp">
 
@@ -13,21 +13,41 @@
 		android:id="@+id/textView_number"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
+		android:layout_centerVertical="true"
 		android:background="@drawable/bg_badge_default"
 		android:gravity="center"
 		android:minWidth="26dp"
+		android:textAlignment="center"
 		android:textColor="?android:textColorSecondaryInverse"
 		tools:text="13" />
 
+	<ImageView
+		android:contentDescription="@null"
+		android:visibility="gone"
+		tools:visibility="visible"
+		android:id="@+id/imageView_check"
+		android:layout_width="0dp"
+		android:layout_height="0dp"
+		android:layout_alignStart="@id/textView_number"
+		android:layout_alignTop="@id/textView_number"
+		android:layout_alignEnd="@id/textView_number"
+		android:layout_alignBottom="@id/textView_number"
+		android:scaleType="fitCenter"
+		android:src="@drawable/ic_check"
+		android:padding="2dp"
+		app:tint="@android:color/white" />
+
 	<TextView
 		android:id="@+id/textView_title"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
+		android:layout_centerVertical="true"
 		android:layout_marginStart="10dp"
+		android:layout_toEndOf="@id/textView_number"
 		android:ellipsize="end"
 		android:maxLines="2"
 		android:text="?android:textColorPrimary"
 		android:textAppearance="@style/TextAppearance.AppCompat.Body1"
 		tools:text="@tools:sample/lorem[15]" />
 
-</LinearLayout>
+</RelativeLayout>

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

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto">
+
+	<item
+		android:id="@+id/action_select_all"
+		android:icon="@drawable/ic_select_all"
+		android:title="@android:string/selectAll"
+		app:showAsAction="ifRoom|withText" />
+
+	<item
+		android:id="@+id/action_save"
+		android:icon="@drawable/ic_save"
+		android:title="@string/save"
+		app:showAsAction="ifRoom|withText" />
+
+</menu>

app/src/main/res/values-ru/plurals.xml

@@ -15,4 +15,9 @@
 		<item quantity="few">%1$d новых главы</item>
 		<item quantity="many">%1$d новых глав</item>
 	</plurals>
+	<plurals name="chapters_from_x">
+		<item quantity="one">%1$d глава из %2$d</item>
+		<item quantity="few">%1$d главы из %2$d</item>
+		<item quantity="many">%1$d глав из %2$d</item>
+	</plurals>
 </resources>

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

@@ -12,4 +12,8 @@
 		<item quantity="one">%1$d new chapter</item>
 		<item quantity="other">%1$d new chapters</item>
 	</plurals>
+	<plurals name="chapters_from_x">
+		<item quantity="one">%1$d chapter from %2$d</item>
+		<item quantity="other">%1$d chapters from %2$d</item>
+	</plurals>
 </resources>