Using Display listener for landscape/seascape changes

Bug: 146150882
Change-Id: Idd2ef053bd10d9add93a1366e49c0e231f2c391b
diff --git a/quickstep/src/com/android/launcher3/uioverrides/DisplayRotationListener.java b/quickstep/src/com/android/launcher3/uioverrides/DisplayRotationListener.java
deleted file mode 100644
index 2d9a161..0000000
--- a/quickstep/src/com/android/launcher3/uioverrides/DisplayRotationListener.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import android.content.Context;
-import android.os.Handler;
-
-import com.android.systemui.shared.system.RotationWatcher;
-
-/**
- * Utility class for listening for rotation changes
- */
-public class DisplayRotationListener extends RotationWatcher {
-
-    private final Runnable mCallback;
-    private Handler mHandler;
-
-    public DisplayRotationListener(Context context, Runnable callback) {
-        super(context);
-        mCallback = callback;
-    }
-
-    @Override
-    public void enable() {
-        if (mHandler == null) {
-            mHandler = new Handler();
-        }
-        super.enable();
-    }
-
-    @Override
-    protected void onRotationChanged(int i) {
-        mHandler.post(mCallback);
-    }
-}
diff --git a/src/com/android/launcher3/BaseDraggingActivity.java b/src/com/android/launcher3/BaseDraggingActivity.java
index dda38b3..0d9126b 100644
--- a/src/com/android/launcher3/BaseDraggingActivity.java
+++ b/src/com/android/launcher3/BaseDraggingActivity.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3;
 
+import static com.android.launcher3.util.DefaultDisplay.CHANGE_ROTATION;
+
 import android.app.ActivityOptions;
 import android.content.ActivityNotFoundException;
 import android.content.Intent;
@@ -38,8 +40,10 @@
 import com.android.launcher3.model.AppLaunchTracker;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.touch.ItemClickHandler;
-import com.android.launcher3.uioverrides.DisplayRotationListener;
 import com.android.launcher3.uioverrides.WallpaperColorInfo;
+import com.android.launcher3.util.DefaultDisplay;
+import com.android.launcher3.util.DefaultDisplay.DisplayInfoChangeListener;
+import com.android.launcher3.util.DefaultDisplay.Info;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.TraceHelper;
@@ -48,7 +52,7 @@
  * Extension of BaseActivity allowing support for drag-n-drop
  */
 public abstract class BaseDraggingActivity extends BaseActivity
-        implements WallpaperColorInfo.OnChangeListener {
+        implements WallpaperColorInfo.OnChangeListener, DisplayInfoChangeListener {
 
     private static final String TAG = "BaseDraggingActivity";
 
@@ -63,8 +67,6 @@
 
     private int mThemeRes = R.style.AppTheme;
 
-    private DisplayRotationListener mRotationListener;
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -72,7 +74,7 @@
 
         mIsSafeModeEnabled = TraceHelper.whitelistIpcs("isSafeMode",
                 () -> getPackageManager().isSafeMode());
-        mRotationListener = new DisplayRotationListener(this, this::onDeviceRotationChanged);
+        DefaultDisplay.INSTANCE.get(this).addChangeListener(this);
 
         // Update theme
         WallpaperColorInfo.INSTANCE.get(this).addOnChangeListener(this);
@@ -238,7 +240,7 @@
     protected void onDestroy() {
         super.onDestroy();
         WallpaperColorInfo.INSTANCE.get(this).removeOnChangeListener(this);
-        mRotationListener.disable();
+        DefaultDisplay.INSTANCE.get(this).removeChangeListener(this);
     }
 
     public void runOnceOnStart(Runnable action) {
@@ -251,15 +253,13 @@
 
     protected void onDeviceProfileInitiated() {
         if (mDeviceProfile.isVerticalBarLayout()) {
-            mRotationListener.enable();
             mDeviceProfile.updateIsSeascape(this);
-        } else {
-            mRotationListener.disable();
         }
     }
 
-    private void onDeviceRotationChanged() {
-        if (mDeviceProfile.updateIsSeascape(this)) {
+    @Override
+    public void onDisplayInfoChanged(Info info, int flags) {
+        if ((flags & CHANGE_ROTATION) != 0 && mDeviceProfile.updateIsSeascape(this)) {
             reapplyUi();
         }
     }
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/DisplayRotationListener.java b/src_ui_overrides/com/android/launcher3/uioverrides/DisplayRotationListener.java
deleted file mode 100644
index b1a67e9..0000000
--- a/src_ui_overrides/com/android/launcher3/uioverrides/DisplayRotationListener.java
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import android.content.Context;
-import android.view.OrientationEventListener;
-
-/**
- * Utility class for listening for rotation changes
- */
-public class DisplayRotationListener extends OrientationEventListener {
-
-    private final Runnable mCallback;
-
-    public DisplayRotationListener(Context context, Runnable callback) {
-        super(context);
-        mCallback = callback;
-    }
-
-    @Override
-    public void onOrientationChanged(int i) {
-        mCallback.run();
-    }
-}