Add full support for child deletions

app/src/main/java/com/lagradost/cloudstream3/ui/download/DownloadAdapter.kt

@@ -285,7 +285,12 @@ class DownloadAdapter(
                 }
 
                 downloadButton.setDefaultClickListener(data, downloadChildEpisodeTextExtra, mediaClickCallback)
-                downloadButton.isVisible = true
+                downloadButton.isVisible = !isMultiDeleteState
+
+                downloadButton.setOnLongClickListener {
+                    multiDeleteStateCallback.invoke(VisualDownloadItem.Child(card))
+                    true
+                }
 
                 downloadChildEpisodeText.apply {
                     text = context.getNameFull(data.name, data.episode, data.season)
@@ -295,6 +300,35 @@ class DownloadAdapter(
                 downloadChildEpisodeHolder.setOnClickListener {
                     mediaClickCallback.invoke(DownloadClickEvent(DOWNLOAD_ACTION_PLAY_FILE, data))
                 }
+
+                downloadChildEpisodeHolder.apply {
+                    if (isMultiDeleteState) {
+                        setOnClickListener {
+                            toggleIsChecked(deleteCheckbox, VisualDownloadItem.Child(card))
+                        }
+                    } else {
+                        setOnClickListener {
+                            mediaClickCallback.invoke(DownloadClickEvent(DOWNLOAD_ACTION_PLAY_FILE, data))
+                        }
+                    }
+
+                    setOnLongClickListener {
+                        multiDeleteStateCallback.invoke(VisualDownloadItem.Child(card))
+                        true
+                    }
+                }
+
+                if (isMultiDeleteState) {
+                    deleteCheckbox.setOnCheckedChangeListener { _, isChecked ->
+                        selectedIds[data.id] = isChecked
+                        selectedChangedCallback.invoke(VisualDownloadItem.Child(card), isChecked)
+                    }
+                } else deleteCheckbox.setOnCheckedChangeListener(null)
+
+                deleteCheckbox.apply {
+                    isVisible = isMultiDeleteState
+                    isChecked = selectedIds[data.id] == true
+                }
             }
         }
     }

app/src/main/java/com/lagradost/cloudstream3/ui/download/DownloadChildFragment.kt

@@ -4,10 +4,12 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProvider
 import com.lagradost.cloudstream3.R
 import com.lagradost.cloudstream3.databinding.FragmentChildDownloadsBinding
+import com.lagradost.cloudstream3.mvvm.observe
 import com.lagradost.cloudstream3.ui.download.DownloadButtonSetup.handleDownloadClick
 import com.lagradost.cloudstream3.ui.result.FOCUS_SELF
 import com.lagradost.cloudstream3.ui.result.setLinearListLayout
@@ -86,6 +88,10 @@ class DownloadChildFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
+        // We always want fresh selections
+        // when navigating to downloads
+        downloadsViewModel.clearSelectedItems()
+
         val folder = arguments?.getString("folder")
         val name = arguments?.getString("name")
         if (folder == null) {
@@ -105,6 +111,12 @@ class DownloadChildFragment : Fragment() {
             setAppBarNoScrollFlagsOnTV()
         }
 
+        observe(downloadsViewModel.selectedItems) {
+            handleSelectedChange(it)
+            binding?.btnDelete?.text =
+                getString(R.string.delete_count).format(it.count())
+        }
+
         val adapter = DownloadAdapter(
             {},
             { downloadClickEvent ->
@@ -113,8 +125,19 @@ class DownloadChildFragment : Fragment() {
                     setUpDownloadDeleteListener(folder)
                 }
             },
-            { _, _ -> },
-            { _ -> }
+            { card, isChecked ->
+                if (isChecked) {
+                    downloadsViewModel.addSelected(card)
+                } else downloadsViewModel.removeSelected(card)
+            },
+            { card ->
+                if (card !is VisualDownloadItem.Child) return@DownloadAdapter
+                downloadsViewModel.addSelected(card)
+                (binding?.downloadChildList?.adapter as? DownloadAdapter)?.updateSelectedItem(
+                    card.child.data.id,
+                    true
+                )
+            }
         )
 
         binding?.downloadChildList?.apply {
@@ -131,6 +154,34 @@ class DownloadChildFragment : Fragment() {
         updateList(folder)
     }
 
+    private fun handleSelectedChange(selected: MutableList<VisualDownloadItem>) {
+        val adapter = binding?.downloadChildList?.adapter as? DownloadAdapter
+        if (selected.isNotEmpty()) {
+            binding?.downloadDeleteAppbar?.isVisible = true
+
+            binding?.btnDelete?.setOnClickListener {
+                context?.let { ctx -> downloadsViewModel.handleMultiDelete(ctx) }
+            }
+
+            binding?.btnCancel?.setOnClickListener {
+                adapter?.setIsMultiDeleteState(false)
+                downloadsViewModel.clearSelectedItems()
+            }
+
+            binding?.btnSelectAll?.setOnClickListener {
+                adapter?.selectAllItems()
+                downloadsViewModel.selectAllItems()
+            }
+
+            adapter?.setIsMultiDeleteState(true)
+        } else {
+            binding?.downloadDeleteAppbar?.isVisible = false
+
+            adapter?.setIsMultiDeleteState(false)
+            downloadsViewModel.clearSelectedItems()
+        }
+    }
+
     private fun setUpDownloadDeleteListener(folder: String) {
         downloadDeleteEventListener = { id: Int ->
             val list = (binding?.downloadChildList?.adapter as? DownloadAdapter)?.currentList

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

@@ -2,10 +2,8 @@
 <androidx.cardview.widget.CardView 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:id="@+id/download_child_episode_holder"
     android:layout_width="match_parent"
-
     android:layout_height="50dp"
     android:layout_marginBottom="5dp"
     android:foreground="@drawable/outline_drawable"
@@ -18,7 +16,6 @@
 
     <androidx.core.widget.ContentLoadingProgressBar
         android:id="@+id/download_child_episode_progress"
-
         style="@android:style/Widget.Material.ProgressBar.Horizontal"
         android:layout_width="match_parent"
         android:layout_height="5dp"
@@ -56,12 +53,10 @@
                 android:layout_gravity="center_vertical"
                 android:layout_marginStart="10dp"
                 android:layout_marginEnd="10dp"
-
                 android:ellipsize="marquee"
                 android:gravity="center_vertical"
                 android:marqueeRepeatLimit="marquee_forever"
                 android:scrollHorizontally="true"
-
                 android:singleLine="true"
                 android:textColor="?attr/textColor"
                 tools:text="Episode 1 Episode 1 Episode 1 Episode 1 Episode 1 Episode 1 Episode 1" />
@@ -78,7 +73,6 @@
                 tools:text="128MB / 237MB" />
         </LinearLayout>
 
-
         <com.lagradost.cloudstream3.ui.download.button.PieFetchButton
             android:id="@+id/download_button"
             android:layout_width="@dimen/download_size"
@@ -89,5 +83,16 @@
             android:focusable="true"
             android:nextFocusLeft="@id/download_child_episode_holder"
             android:padding="10dp" />
+
+        <CheckBox
+            android:id="@+id/delete_checkbox"
+            android:layout_width="@dimen/download_size"
+            android:layout_height="@dimen/download_size"
+            android:layout_gravity="center_vertical|end"
+            android:layout_marginStart="-50dp"
+            android:focusable="true"
+            android:nextFocusLeft="@id/download_child_episode_holder"
+            android:padding="10dp"
+            android:visibility="gone" />
     </GridLayout>
 </androidx.cardview.widget.CardView>

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

@@ -14,21 +14,74 @@
         android:layout_height="wrap_content"
         android:background="@android:color/transparent">
 
-        <com.google.android.material.appbar.MaterialToolbar
-            android:id="@+id/download_child_toolbar"
+        <FrameLayout
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:background="?attr/primaryGrayBackground"
-            android:paddingTop="@dimen/navbar_height"
-            app:layout_scrollFlags="scroll|enterAlways"
-            app:navigationIconTint="?attr/iconColor"
-            app:titleTextColor="?attr/textColor"
-            tools:title="Overlord" />
+            android:layout_height="wrap_content">
+
+            <LinearLayout
+                android:id="@+id/download_delete_appbar"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:background="?attr/colorPrimary"
+                android:padding="8dp"
+                android:visibility="gone"
+                android:elevation="100dp">
+
+                <ImageView
+                    android:id="@+id/btnCancel"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:src="@drawable/ic_baseline_close_24"
+                    android:contentDescription="@string/cancel"
+                    android:padding="8dp"
+                    android:layout_gravity="center_vertical"
+                    app:tint="@android:color/white" />
+
+                <Button
+                    android:id="@+id/btnDelete"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="?attr/selectableItemBackground"
+                    android:text="@string/delete"
+                    android:textColor="@android:color/white"
+                    android:layout_gravity="center_vertical" />
+
+                <View
+                    android:layout_width="0dp"
+                    android:layout_height="0dp"
+                    android:layout_weight="1" />
+
+                <Button
+                    android:id="@+id/btnSelectAll"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:background="?attr/selectableItemBackground"
+                    android:text="@string/select_all"
+                    android:textColor="@android:color/white"
+                    android:layout_marginEnd="8dp" />
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content">
+
+                <com.google.android.material.appbar.MaterialToolbar
+                    android:id="@+id/download_child_toolbar"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:background="?attr/primaryGrayBackground"
+                    android:paddingTop="@dimen/navbar_height"
+                    app:layout_scrollFlags="scroll|enterAlways"
+                    app:navigationIconTint="?attr/iconColor"
+                    app:titleTextColor="?attr/textColor"
+                    tools:title="Overlord" />
+            </LinearLayout>
+        </FrameLayout>
     </com.google.android.material.appbar.AppBarLayout>
 
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/download_child_list"
-
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:background="?attr/primaryBlackBackground"