queue: add ability to play songs [#92]

Add the ability to jump to arbitrary points in the queue.

This comes at the cost of the long-press option to move items, since
they simply cannot co-exist without visual issues.

CHANGELOG.md

@@ -12,6 +12,7 @@ at the cost of longer loading times
 - Added Last Added sorting
 - Search now takes sort tags and file names in account [#184]
 - Added option to clear playback state in settings
+- Added ability to play songs from queue
 
 #### What's Improved
 - App now exposes an (immutable) queue.

app/src/main/java/org/oxycblt/auxio/music/system/IndexerService.kt

@@ -72,6 +72,11 @@ class IndexerService : Service(), Indexer.Controller, Settings.Callback {
         indexingNotification = IndexingNotification(this)
         observingNotification = ObservingNotification(this)
 
+        wakeLock =
+            getSystemServiceSafe(PowerManager::class)
+                .newWakeLock(
+                    PowerManager.PARTIAL_WAKE_LOCK, BuildConfig.APPLICATION_ID + ".IndexerService")
+
         settings = Settings(this, this)
         indexerContentObserver = SystemContentObserver()
 
@@ -81,11 +86,6 @@ class IndexerService : Service(), Indexer.Controller, Settings.Callback {
             onStartIndexing()
         }
 
-        wakeLock =
-            getSystemServiceSafe(PowerManager::class)
-                .newWakeLock(
-                    PowerManager.PARTIAL_WAKE_LOCK, BuildConfig.APPLICATION_ID + ".IndexerService")
-
         logD("Service created.")
     }
 

app/src/main/java/org/oxycblt/auxio/playback/PlaybackViewModel.kt

@@ -36,6 +36,7 @@ import org.oxycblt.auxio.playback.state.PlaybackStateManager
 import org.oxycblt.auxio.playback.state.RepeatMode
 import org.oxycblt.auxio.settings.Settings
 import org.oxycblt.auxio.util.application
+import org.oxycblt.auxio.util.logD
 import org.oxycblt.auxio.util.logE
 
 /**
@@ -195,6 +196,19 @@ class PlaybackViewModel(application: Application) :
         playbackManager.prev()
     }
 
+    /**
+     * Go to an item in the queue using it's recyclerview adapter index. No-ops if out of bounds.
+     */
+    fun goto(adapterIndex: Int) {
+        val index = adapterIndex + (playbackManager.queue.size - _nextUp.value.size)
+        logD(adapterIndex)
+        logD(playbackManager.queue.size - _nextUp.value.size)
+
+        if (index in playbackManager.queue.indices) {
+            playbackManager.goto(index)
+        }
+    }
+
     /** Remove a queue item using it's recyclerview adapter index. */
     fun removeQueueDataItem(adapterIndex: Int) {
         val index = adapterIndex + (playbackManager.queue.size - _nextUp.value.size)

app/src/main/java/org/oxycblt/auxio/playback/queue/QueueAdapter.kt

@@ -19,32 +19,26 @@ package org.oxycblt.auxio.playback.queue
 
 import android.annotation.SuppressLint
 import android.content.Context
-import android.graphics.drawable.ColorDrawable
 import android.view.MotionEvent
 import android.view.View
 import androidx.core.view.isInvisible
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.shape.MaterialShapeDrawable
 import org.oxycblt.auxio.IntegerTable
+import org.oxycblt.auxio.R
 import org.oxycblt.auxio.databinding.ItemQueueSongBinding
 import org.oxycblt.auxio.music.Song
-import org.oxycblt.auxio.ui.recycler.BindingViewHolder
-import org.oxycblt.auxio.ui.recycler.MonoAdapter
-import org.oxycblt.auxio.ui.recycler.SongViewHolder
-import org.oxycblt.auxio.ui.recycler.SyncBackingData
-import org.oxycblt.auxio.util.context
-import org.oxycblt.auxio.util.disableDropShadowCompat
-import org.oxycblt.auxio.util.inflater
-import org.oxycblt.auxio.util.stateList
-import org.oxycblt.auxio.util.textSafe
+import org.oxycblt.auxio.ui.recycler.*
+import org.oxycblt.auxio.util.*
 
-class QueueAdapter(listener: QueueItemListener) :
+class QueueAdapter(private val listener: QueueItemListener) :
     MonoAdapter<Song, QueueItemListener, QueueSongViewHolder>(listener) {
     override val data = SyncBackingData(this, QueueSongViewHolder.DIFFER)
     override val creator = QueueSongViewHolder.CREATOR
 }
 
 interface QueueItemListener {
+    fun onClick(viewHolder: RecyclerView.ViewHolder)
     fun onPickUp(viewHolder: RecyclerView.ViewHolder)
 }
 
@@ -57,13 +51,13 @@ private constructor(
     val backgroundView: View
         get() = binding.background
 
-    init {
-        binding.body.background =
-            MaterialShapeDrawable.createWithElevationOverlay(binding.root.context).apply {
-                fillColor = (binding.body.background as ColorDrawable).color.stateList
-            }
+    val backgroundDrawable =
+        MaterialShapeDrawable.createWithElevationOverlay(binding.root.context).apply {
+            fillColor = binding.context.getAttrColorSafe(R.attr.colorSurface).stateList
+        }
 
-        binding.root.disableDropShadowCompat()
+    init {
+        binding.body.background = backgroundDrawable
     }
 
     @SuppressLint("ClickableViewAccessibility")
@@ -77,6 +71,8 @@ private constructor(
         binding.songName.requestLayout()
         binding.songInfo.requestLayout()
 
+        binding.body.setOnClickListener { listener.onClick(this) }
+
         // Roll our own drag handlers as the default ones suck
         binding.songDragHandle.setOnTouchListener { _, motionEvent ->
             binding.songDragHandle.performClick()
@@ -85,11 +81,6 @@ private constructor(
                 true
             } else false
         }
-
-        binding.body.setOnLongClickListener {
-            listener.onPickUp(this)
-            true
-        }
     }
 
     companion object {

app/src/main/java/org/oxycblt/auxio/playback/queue/QueueDragCallback.kt

@@ -22,7 +22,6 @@ import android.view.animation.AccelerateDecelerateInterpolator
 import androidx.core.view.isInvisible
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
-import com.google.android.material.shape.MaterialShapeDrawable
 import kotlin.math.abs
 import kotlin.math.max
 import kotlin.math.min
@@ -87,7 +86,7 @@ class QueueDragCallback(private val playbackModel: PlaybackViewModel) : ItemTouc
         if (shouldLift && isCurrentlyActive && actionState == ItemTouchHelper.ACTION_STATE_DRAG) {
             logD("Lifting queue item")
 
-            val bg = holder.bodyView.background as MaterialShapeDrawable
+            val bg = holder.backgroundDrawable
             val elevation = recyclerView.context.getDimenSafe(R.dimen.elevation_small)
             holder.itemView
                 .animate()
@@ -125,7 +124,7 @@ class QueueDragCallback(private val playbackModel: PlaybackViewModel) : ItemTouc
         if (holder.itemView.translationZ != 0f) {
             logD("Dropping queue item")
 
-            val bg = holder.bodyView.background as MaterialShapeDrawable
+            val bg = holder.backgroundDrawable
             holder.itemView
                 .animate()
                 .translationZ(0.0f)

app/src/main/java/org/oxycblt/auxio/playback/queue/QueueFragment.kt

@@ -61,6 +61,10 @@ class QueueFragment : ViewBindingFragment<FragmentQueueBinding>(), QueueItemList
         binding.queueRecycler.adapter = null
     }
 
+    override fun onClick(viewHolder: RecyclerView.ViewHolder) {
+        playbackModel.goto(viewHolder.bindingAdapterPosition)
+    }
+
     override fun onPickUp(viewHolder: RecyclerView.ViewHolder) {
         touchHelper.startDrag(viewHolder)
     }

app/src/main/java/org/oxycblt/auxio/playback/state/PlaybackStateManager.kt

@@ -200,9 +200,9 @@ class PlaybackStateManager private constructor() {
         // Increment the index, if it cannot be incremented any further, then
         // repeat and pause/resume playback depending on the setting
         if (index < _queue.lastIndex) {
-            goto(index + 1, true)
+            gotoImpl(index + 1, true)
         } else {
-            goto(0, repeatMode == RepeatMode.ALL)
+            gotoImpl(0, repeatMode == RepeatMode.ALL)
         }
     }
 
@@ -214,11 +214,16 @@ class PlaybackStateManager private constructor() {
             rewind()
             isPlaying = true
         } else {
-            goto(max(index - 1, 0), true)
+            gotoImpl(max(index - 1, 0), true)
         }
     }
 
-    private fun goto(idx: Int, play: Boolean) {
+    @Synchronized
+    fun goto(index: Int) {
+        gotoImpl(index, true)
+    }
+
+    private fun gotoImpl(idx: Int, play: Boolean) {
         index = idx
         seekTo(0)
         notifyIndexMoved()

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

@@ -21,11 +21,15 @@
         android:src="@drawable/ic_delete_24"
         app:tint="?attr/colorSurface" />
 
-    <androidx.constraintlayout.widget.ConstraintLayout
+    <FrameLayout
         android:id="@+id/body"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="?attr/colorSurface">
+        android:layout_height="wrap_content">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="?attr/selectableItemBackground">
 
         <org.oxycblt.auxio.image.StyledImageView
             android:id="@+id/song_album_cover"
@@ -73,5 +77,7 @@
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintTop_toTopOf="@+id/song_album_cover" />
 
-    </androidx.constraintlayout.widget.ConstraintLayout>
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+    </FrameLayout>
 </FrameLayout>