Fixes #2948 - Updated Volume control delegate to have a function where clients can handle action cancelled event. (#3500)

Author: daron-walters

app/src/common/shared/org/mozilla/vrbrowser/ui/views/VolumeControl.java

@@ -3,7 +3,9 @@
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.util.AttributeSet;
+import android.util.Log;
 import android.view.MotionEvent;
+import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.SeekBar;
 
@@ -38,18 +40,19 @@ public VolumeControl(Context context, AttributeSet attrs, int defStyleAttr, int
         initialize();
     }
 
-    public interface Delegate {
-        void onVolumeChange(double aVolume);
-    }
-
     @SuppressLint("ClickableViewAccessibility")
     private void initialize() {
         inflate(getContext(), R.layout.volume_control, this);
         mSeekBar = findViewById(R.id.volumeSeekBar);
         mSeekBar.setProgress(100);
         mSeekBar.setOnSeekBarChangeListener(this);
         mSeekBar.setOnTouchListener((v, event) -> {
-            if (event.getAction() == MotionEvent.ACTION_UP) {
+
+            if ((event.getAction() == MotionEvent.ACTION_UP) || (event.getAction() == MotionEvent.ACTION_CANCEL)) {
+                if ((event.getAction() == MotionEvent.ACTION_CANCEL) && (mDelegate != null)) {
+                    mDelegate.onSeekBarActionCancelled();
+                }
+
                 return true;
             }
             return false;
@@ -60,7 +63,6 @@ public void setDelegate(Delegate aDelegate) {
         mDelegate = aDelegate;
     }
 
-
     public void setVolume(double aVolume) {
         mVolume = aVolume;
         if (!mTouching) {
@@ -101,4 +103,10 @@ public void onStartTrackingTouch(SeekBar seekBar) {
     public void onStopTrackingTouch(SeekBar seekBar) {
         mTouching = false;
     }
+
+    public interface Delegate {
+        void onVolumeChange(double aVolume);
+
+        void onSeekBarActionCancelled();
+    }
 }

app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/MediaControlsWidget.java

@@ -200,12 +200,23 @@ public void onSeekPreview(String aText, double aRatio) {
             }
         });
 
-        mVolumeControl.setDelegate(v -> {
-            mMedia.setVolume(v);
-            if (mMedia.isMuted()) {
-                mMedia.setMuted(false);
+
+        mVolumeControl.setDelegate(new VolumeControl.Delegate() {
+
+            @Override
+            public void onVolumeChange(double aVolume) {
+                mMedia.setVolume(aVolume);
+                if (mMedia.isMuted()) {
+                    mMedia.setMuted(false);
+                }
+                mVolumeControl.requestFocusFromTouch();
+            }
+
+            @Override
+            public void onSeekBarActionCancelled() {
+                mHideVolumeSlider = true;
+                startVolumeCtrlHandler();
             }
-            mVolumeControl.requestFocusFromTouch();
         });