Get rid of VolumeSeekBarPreferenceController.setCallback

Set the callback to VolumeSeekBarPreference directly and simplify
SoundSettings.

Bug: 386162594
Flag: EXEMPT refactor
Test: atest&manual
Change-Id: Ic114c15c236da9f3ea3754408adbfa9c841befd0

src/com/android/settings/notification/SoundSettings.java

@@ -46,6 +46,7 @@ import com.android.settings.widget.UpdatableListPreferenceDialogFragment;
 import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.core.instrumentation.Instrumentable;
 import com.android.settingslib.core.lifecycle.Lifecycle;
+import com.android.settingslib.preference.UtilsKt;
 import com.android.settingslib.search.SearchIndexable;
 
 import java.util.ArrayList;
@@ -113,14 +114,12 @@ public class SoundSettings extends DashboardFragment implements OnActivityResult
         if (phoneRingTonePreference != null && openPhoneRingtonePicker) {
             onPreferenceTreeClick(phoneRingTonePreference);
         }
-        if (isCatalystEnabled()) {
-            for (String key : getPreferenceKeysInHierarchy()) {
-                Preference preference = findPreference(key);
-                if (preference instanceof VolumeSeekBarPreference) {
-                    ((VolumeSeekBarPreference) preference).setCallback(mVolumeCallback);
-                }
+        UtilsKt.forEachRecursively(getPreferenceScreen(), preference -> {
+            if (preference instanceof VolumeSeekBarPreference) {
+                ((VolumeSeekBarPreference) preference).setCallback(mVolumeCallback);
             }
-        }
+            return null;
+        });
     }
 
     @Override
@@ -203,22 +202,11 @@ public class SoundSettings extends DashboardFragment implements OnActivityResult
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
-        ArrayList<VolumeSeekBarPreferenceController> volumeControllers = new ArrayList<>();
-        volumeControllers.add(use(AlarmVolumePreferenceController.class));
-        volumeControllers.add(use(MediaVolumePreferenceController.class));
-        volumeControllers.add(use(SeparateRingVolumePreferenceController.class));
-        volumeControllers.add(use(NotificationVolumePreferenceController.class));
-        volumeControllers.add(use(CallVolumePreferenceController.class));
 
         use(HandsFreeProfileOutputPreferenceController.class).setCallback(listPreference ->
                 onPreferenceDataChanged(listPreference));
         mHfpOutputControllerKey =
                 use(HandsFreeProfileOutputPreferenceController.class).getPreferenceKey();
-
-        for (VolumeSeekBarPreferenceController controller : volumeControllers) {
-            controller.setCallback(mVolumeCallback);
-            getSettingsLifecycle().addObserver(controller);
-        }
     }
 
     // === Volumes ===

src/com/android/settings/notification/VolumeSeekBarPreferenceController.java

@@ -24,7 +24,6 @@ import androidx.lifecycle.OnLifecycleEvent;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.R;
-import com.android.settings.notification.VolumeSeekBarPreference.Callback;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 
 /**
@@ -34,7 +33,6 @@ public abstract class VolumeSeekBarPreferenceController extends
         AdjustVolumeRestrictedPreferenceController implements LifecycleObserver {
 
     protected VolumeSeekBarPreference mPreference;
-    protected VolumeSeekBarPreference.Callback mVolumePreferenceCallback;
     protected AudioHelper mHelper;
     protected VolumeSeekBarPreference.Listener mVolumePreferenceListener;
 
@@ -48,10 +46,6 @@ public abstract class VolumeSeekBarPreferenceController extends
         mHelper = helper;
     }
 
-    public void setCallback(Callback callback) {
-        mVolumePreferenceCallback = callback;
-    }
-
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);
@@ -62,7 +56,6 @@ public abstract class VolumeSeekBarPreferenceController extends
 
     protected void setupVolPreference(PreferenceScreen screen) {
         mPreference = screen.findPreference(getPreferenceKey());
-        mPreference.setCallback(mVolumePreferenceCallback);
         mPreference.setListener(mVolumePreferenceListener);
         mPreference.setStream(getAudioStream());
         mPreference.setMuteIcon(getMuteIcon());

tests/robotests/src/com/android/settings/notification/VolumeSeekBarPreferenceControllerTest.java

@@ -31,14 +31,18 @@ import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
 import org.robolectric.RobolectricTestRunner;
 
 @RunWith(RobolectricTestRunner.class)
 public class VolumeSeekBarPreferenceControllerTest {
+    @Rule
+    public final MockitoRule mMockitoRule = MockitoJUnit.rule();
 
     @Mock
     private Context mContext;
@@ -47,8 +51,6 @@ public class VolumeSeekBarPreferenceControllerTest {
     @Mock
     private VolumeSeekBarPreference mPreference;
     @Mock
-    private VolumeSeekBarPreference.Callback mCallback;
-    @Mock
     private VolumeSeekBarPreference.Listener mListener;
     @Mock
     private AudioHelper mHelper;
@@ -57,10 +59,9 @@ public class VolumeSeekBarPreferenceControllerTest {
 
     @Before
     public void setUp() {
-        MockitoAnnotations.initMocks(this);
         when(mScreen.findPreference(nullable(String.class))).thenReturn(mPreference);
         when(mPreference.getKey()).thenReturn("key");
-        mController = new VolumeSeekBarPreferenceControllerTestable(mContext, mCallback, true,
+        mController = new VolumeSeekBarPreferenceControllerTestable(mContext, true,
                 mPreference.getKey(), mListener);
         mController.setAudioHelper(mHelper);
     }
@@ -69,7 +70,6 @@ public class VolumeSeekBarPreferenceControllerTest {
     public void displayPreference_available_shouldUpdatePreference() {
         mController.displayPreference(mScreen);
 
-        verify(mPreference).setCallback(mCallback);
         verify(mPreference).setStream(VolumeSeekBarPreferenceControllerTestable.AUDIO_STREAM);
         verify(mPreference).setMuteIcon(VolumeSeekBarPreferenceControllerTestable.MUTE_ICON);
         verify(mPreference).setListener(mListener);
@@ -77,7 +77,7 @@ public class VolumeSeekBarPreferenceControllerTest {
 
     @Test
     public void displayPreference_notAvailable_shouldNotUpdatePreference() {
-        mController = new VolumeSeekBarPreferenceControllerTestable(mContext, mCallback, false,
+        mController = new VolumeSeekBarPreferenceControllerTestable(mContext, false,
                 mPreference.getKey(), mListener);
 
         mController.displayPreference(mScreen);
@@ -152,19 +152,17 @@ public class VolumeSeekBarPreferenceControllerTest {
         assertThat(mController.getSliderPosition()).isEqualTo(7);
     }
 
-    private class VolumeSeekBarPreferenceControllerTestable
-        extends VolumeSeekBarPreferenceController {
+    private static class VolumeSeekBarPreferenceControllerTestable extends
+            VolumeSeekBarPreferenceController {
 
-        private final static int AUDIO_STREAM = 1;
-        private final static int MUTE_ICON = 2;
+        private static final int AUDIO_STREAM = 1;
+        private static final int MUTE_ICON = 2;
 
-        private boolean mAvailable;
+        private final boolean mAvailable;
 
-        VolumeSeekBarPreferenceControllerTestable(Context context,
-                VolumeSeekBarPreference.Callback callback, boolean available, String key,
+        VolumeSeekBarPreferenceControllerTestable(Context context, boolean available, String key,
                 VolumeSeekBarPreference.Listener listener) {
             super(context, key);
-            setCallback(callback);
             mAvailable = available;
             mVolumePreferenceListener = listener;
         }