Using Display listener for landscape/seascape changes

Bug: 146150882
Change-Id: Idd2ef053bd10d9add93a1366e49c0e231f2c391b
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();
         }
     }