Merge "Show disabled seek bar when session is destroyed" into rvc-dev am: c52300ea49

Change-Id: Ia124a7953cee4074432c4a71c30126c5ebb8f892

packages/SystemUI/src/com/android/systemui/media/SeekBarObserver.kt

@@ -61,6 +61,7 @@ class SeekBarObserver(view: View) : Observer<SeekBarViewModel.Progress> {
         if (!data.enabled) {
             seekBarView.setEnabled(false)
             seekBarView.getThumb().setAlpha(0)
+            seekBarView.setProgress(0)
             elapsedTimeView.setText("")
             totalTimeView.setText("")
             return

packages/SystemUI/src/com/android/systemui/media/SeekBarViewModel.kt

@@ -77,13 +77,25 @@ class SeekBarViewModel(val bgExecutor: DelayableExecutor) {
         val seekAvailable = ((playbackState?.actions ?: 0L) and PlaybackState.ACTION_SEEK_TO) != 0L
         val position = playbackState?.position?.toInt()
         val duration = mediaMetadata?.getLong(MediaMetadata.METADATA_KEY_DURATION)?.toInt()
-        val enabled = if (duration != null && duration <= 0) false else true
+        val enabled = if (playbackState == null ||
+                playbackState?.getState() == PlaybackState.STATE_NONE ||
+                (duration != null && duration <= 0)) false else true
         _data = Progress(enabled, seekAvailable, position, duration, color)
         if (shouldPollPlaybackPosition()) {
             checkPlaybackPosition()
         }
     }
 
+    /**
+     * Puts the seek bar into a resumption state.
+     *
+     * This should be called when the media session behind the controller has been destroyed.
+     */
+    @AnyThread
+    fun clearController() = bgExecutor.execute {
+        _data = _data.copy(enabled = false)
+    }
+
     @AnyThread
     private fun checkPlaybackPosition(): Runnable = bgExecutor.executeDelayed({
         val currentPosition = controller?.playbackState?.position?.toInt()

packages/SystemUI/src/com/android/systemui/qs/QSMediaPlayer.java

@@ -170,6 +170,8 @@ public class QSMediaPlayer extends MediaControlPanel {
     public void clearControls() {
         super.clearControls();
 
+        mSeekBarViewModel.clearController();
+
         View guts = mMediaNotifView.findViewById(R.id.media_guts);
         View options = mMediaNotifView.findViewById(R.id.qs_media_controls_options);
 

packages/SystemUI/tests/src/com/android/systemui/media/SeekBarViewModelTest.kt

@@ -86,7 +86,29 @@ public class SeekBarViewModelTest : SysuiTestCase() {
     }
 
     @Test
-    fun updateDuration() {
+    fun updateDurationWithPlayback() {
+        // GIVEN that the duration is contained within the metadata
+        val duration = 12000L
+        val metadata = MediaMetadata.Builder().run {
+            putLong(MediaMetadata.METADATA_KEY_DURATION, duration)
+            build()
+        }
+        whenever(mockController.getMetadata()).thenReturn(metadata)
+        // AND a valid playback state (ie. media session is not destroyed)
+        val state = PlaybackState.Builder().run {
+            setState(PlaybackState.STATE_PLAYING, 200L, 1f)
+            build()
+        }
+        whenever(mockController.getPlaybackState()).thenReturn(state)
+        // WHEN the controller is updated
+        viewModel.updateController(mockController, Color.RED)
+        // THEN the duration is extracted
+        assertThat(viewModel.progress.value!!.duration).isEqualTo(duration)
+        assertThat(viewModel.progress.value!!.enabled).isTrue()
+    }
+
+    @Test
+    fun updateDurationWithoutPlayback() {
         // GIVEN that the duration is contained within the metadata
         val duration = 12000L
         val metadata = MediaMetadata.Builder().run {
@@ -98,7 +120,7 @@ public class SeekBarViewModelTest : SysuiTestCase() {
         viewModel.updateController(mockController, Color.RED)
         // THEN the duration is extracted
         assertThat(viewModel.progress.value!!.duration).isEqualTo(duration)
-        assertThat(viewModel.progress.value!!.enabled).isTrue()
+        assertThat(viewModel.progress.value!!.enabled).isFalse()
     }
 
     @Test
@@ -110,6 +132,12 @@ public class SeekBarViewModelTest : SysuiTestCase() {
             build()
         }
         whenever(mockController.getMetadata()).thenReturn(metadata)
+        // AND a valid playback state (ie. media session is not destroyed)
+        val state = PlaybackState.Builder().run {
+            setState(PlaybackState.STATE_PLAYING, 200L, 1f)
+            build()
+        }
+        whenever(mockController.getPlaybackState()).thenReturn(state)
         // WHEN the controller is updated
         viewModel.updateController(mockController, Color.RED)
         // THEN the seek bar is disabled
@@ -125,6 +153,12 @@ public class SeekBarViewModelTest : SysuiTestCase() {
             build()
         }
         whenever(mockController.getMetadata()).thenReturn(metadata)
+        // AND a valid playback state (ie. media session is not destroyed)
+        val state = PlaybackState.Builder().run {
+            setState(PlaybackState.STATE_PLAYING, 200L, 1f)
+            build()
+        }
+        whenever(mockController.getPlaybackState()).thenReturn(state)
         // WHEN the controller is updated
         viewModel.updateController(mockController, Color.RED)
         // THEN the seek bar is disabled
@@ -372,4 +406,30 @@ public class SeekBarViewModelTest : SysuiTestCase() {
         // THEN an update task is queued
         assertThat(fakeExecutor.numPending()).isEqualTo(1)
     }
+
+    @Test
+    fun clearSeekBar() {
+        // GIVEN that the duration is contained within the metadata
+        val metadata = MediaMetadata.Builder().run {
+            putLong(MediaMetadata.METADATA_KEY_DURATION, 12000L)
+            build()
+        }
+        whenever(mockController.getMetadata()).thenReturn(metadata)
+        // AND a valid playback state (ie. media session is not destroyed)
+        val state = PlaybackState.Builder().run {
+            setState(PlaybackState.STATE_PLAYING, 200L, 1f)
+            build()
+        }
+        whenever(mockController.getPlaybackState()).thenReturn(state)
+        // AND the controller has been updated
+        viewModel.updateController(mockController, Color.RED)
+        // WHEN the controller is cleared on the event when the session is destroyed
+        viewModel.clearController()
+        with(fakeExecutor) {
+            advanceClockToNext()
+            runAllReady()
+        }
+        // THEN the seek bar is disabled
+        assertThat(viewModel.progress.value!!.enabled).isFalse()
+    }
 }