Merge pull request #4269 from Bnyro/master

feat: swipe to delete downloads

app/src/main/java/com/github/libretube/ui/adapters/DownloadsAdapter.kt

@@ -11,6 +11,7 @@ import androidx.recyclerview.widget.RecyclerView
 import com.github.libretube.R
 import com.github.libretube.constants.IntentData
 import com.github.libretube.databinding.DownloadedMediaRowBinding
+import com.github.libretube.db.DatabaseHolder
 import com.github.libretube.db.obj.DownloadWithItems
 import com.github.libretube.extensions.formatAsFileSize
 import com.github.libretube.helpers.ImageHelper
@@ -18,6 +19,10 @@ import com.github.libretube.ui.activities.OfflinePlayerActivity
 import com.github.libretube.ui.sheets.DownloadOptionsBottomSheet
 import com.github.libretube.ui.viewholders.DownloadsViewHolder
 import com.github.libretube.util.TextUtils
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.runBlocking
+import kotlin.io.path.deleteIfExists
 import kotlin.io.path.fileSize
 
 class DownloadsAdapter(
@@ -90,10 +95,8 @@ class DownloadsAdapter(
             }
 
             root.setOnLongClickListener {
-                DownloadOptionsBottomSheet(download, items) {
-                    downloads.removeAt(position)
-                    notifyItemRemoved(position)
-                    notifyItemRangeChanged(position, itemCount)
+                DownloadOptionsBottomSheet(download) {
+                    showDeleteDialog(root.context, position)
                 }.show(
                     (root.context as AppCompatActivity).supportFragmentManager
                 )
@@ -102,6 +105,40 @@ class DownloadsAdapter(
         }
     }
 
+    fun showDeleteDialog(context: Context, position: Int) {
+        MaterialAlertDialogBuilder(context)
+            .setTitle(R.string.delete)
+            .setMessage(R.string.irreversible)
+            .setPositiveButton(R.string.okay) { _, _ ->
+                deleteDownload(position)
+            }
+            .setNegativeButton(R.string.cancel, null)
+            .show()
+    }
+
+    private fun deleteDownload(position: Int) {
+        val download = downloads[position].download
+        val items = downloads[position].downloadItems
+
+        items.forEach {
+            it.path.deleteIfExists()
+        }
+        download.thumbnailPath?.deleteIfExists()
+
+        runBlocking(Dispatchers.IO) {
+            DatabaseHolder.Database.downloadDao().deleteDownload(download)
+        }
+        downloads.removeAt(position)
+        notifyItemRemoved(position)
+        notifyItemRangeChanged(position, itemCount)
+    }
+
+    fun restoreItem(position: Int) {
+        // moves the item back to its initial horizontal position
+        notifyItemRemoved(position)
+        notifyItemInserted(position)
+    }
+
     override fun getItemCount(): Int {
         return downloads.size
     }

app/src/main/java/com/github/libretube/ui/fragments/DownloadsFragment.kt

@@ -11,6 +11,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.github.libretube.R
@@ -84,7 +85,7 @@ class DownloadsFragment : Fragment() {
 
         binding.downloads.layoutManager = LinearLayoutManager(context)
 
-        binding.downloads.adapter = DownloadsAdapter(requireContext(), downloads) {
+        val adapter = DownloadsAdapter(requireContext(), downloads) {
             var isDownloading = false
             val ids = it.downloadItems
                 .filter { item -> item.path.fileSize() < item.downloadSize }
@@ -110,6 +111,28 @@ class DownloadsFragment : Fragment() {
             return@DownloadsAdapter isDownloading.not()
         }
 
+        binding.downloads.adapter = adapter
+
+        val itemTouchCallback = object: ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {
+            override fun getMovementFlags(
+                recyclerView: RecyclerView,
+                viewHolder: RecyclerView.ViewHolder
+            ): Int = makeMovementFlags(0, ItemTouchHelper.LEFT)
+
+            override fun onMove(
+                recyclerView: RecyclerView,
+                viewHolder: RecyclerView.ViewHolder,
+                target: RecyclerView.ViewHolder
+            ): Boolean = false
+
+            override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+                adapter.showDeleteDialog(requireContext(), viewHolder.absoluteAdapterPosition)
+                // put the item back to the center, as it's currently out of the screen
+                adapter.restoreItem(viewHolder.absoluteAdapterPosition)
+            }
+        }
+        ItemTouchHelper(itemTouchCallback).attachToRecyclerView(binding.downloads)
+
         binding.downloads.adapter?.registerAdapterDataObserver(
             object : RecyclerView.AdapterDataObserver() {
                 override fun onItemRangeRemoved(positionStart: Int, itemCount: Int) {

app/src/main/java/com/github/libretube/ui/sheets/DownloadOptionsBottomSheet.kt

@@ -5,22 +5,16 @@ import android.os.Bundle
 import androidx.core.content.ContextCompat
 import com.github.libretube.R
 import com.github.libretube.constants.IntentData
-import com.github.libretube.db.DatabaseHolder
 import com.github.libretube.db.obj.Download
-import com.github.libretube.db.obj.DownloadItem
 import com.github.libretube.enums.ShareObjectType
 import com.github.libretube.helpers.NavigationHelper
 import com.github.libretube.obj.ShareData
 import com.github.libretube.services.OfflinePlayerService
 import com.github.libretube.ui.dialogs.ShareDialog
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
-import kotlin.io.path.deleteIfExists
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.runBlocking
 
 class DownloadOptionsBottomSheet(
     private val download: Download,
-    private val items: List<DownloadItem>,
     private val onDelete: () -> Unit
 ) : BaseBottomSheet() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -50,23 +44,8 @@ class DownloadOptionsBottomSheet(
                 }
 
                 3 -> {
-                    MaterialAlertDialogBuilder(requireContext())
-                        .setTitle(R.string.delete)
-                        .setMessage(R.string.irreversible)
-                        .setPositiveButton(R.string.okay) { _, _ ->
-                            items.forEach {
-                                it.path.deleteIfExists()
-                            }
-                            download.thumbnailPath?.deleteIfExists()
-
-                            runBlocking(Dispatchers.IO) {
-                                DatabaseHolder.Database.downloadDao().deleteDownload(download)
-                            }
-                            onDelete.invoke()
-                            dialog?.dismiss()
-                        }
-                        .setNegativeButton(R.string.cancel, null)
-                        .show()
+                    onDelete.invoke()
+                    dialog?.dismiss()
                 }
             }
         }