Merge "Use transition for desktop-mode switch when enabled" into tm-qpr-dev am: d6c6f5865f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19973186

Change-Id: I8e5b1c58353dcb546b3d4ed64696f26c957f3e02
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

libs/WindowManager/Shell/src/com/android/wm/shell/dagger/WMShellModule.java

@@ -599,12 +599,12 @@ public abstract class WMShellModule {
             Context context, ShellInit shellInit,
             ShellTaskOrganizer shellTaskOrganizer,
             RootDisplayAreaOrganizer rootDisplayAreaOrganizer,
-            @ShellMainThread Handler mainHandler
+            @ShellMainThread Handler mainHandler,
+            Transitions transitions
     ) {
         if (DesktopMode.IS_SUPPORTED) {
             return Optional.of(new DesktopModeController(context, shellInit, shellTaskOrganizer,
-                    rootDisplayAreaOrganizer,
+                    rootDisplayAreaOrganizer, mainHandler, transitions));
-                    mainHandler));
         } else {
             return Optional.empty();
         }

libs/WindowManager/Shell/src/com/android/wm/shell/desktopmode/DesktopModeController.java

@@ -18,6 +18,7 @@ package com.android.wm.shell.desktopmode;
 
 import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
+import static android.view.WindowManager.TRANSIT_CHANGE;
 
 import static com.android.wm.shell.protolog.ShellProtoLogGroup.WM_SHELL_DESKTOP_MODE;
 
@@ -37,6 +38,7 @@ import com.android.wm.shell.RootDisplayAreaOrganizer;
 import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.common.annotations.ShellMainThread;
 import com.android.wm.shell.sysui.ShellInit;
+import com.android.wm.shell.transition.Transitions;
 
 /**
  * Handles windowing changes when desktop mode system setting changes
@@ -47,15 +49,18 @@ public class DesktopModeController {
     private final ShellTaskOrganizer mShellTaskOrganizer;
     private final RootDisplayAreaOrganizer mRootDisplayAreaOrganizer;
     private final SettingsObserver mSettingsObserver;
+    private final Transitions mTransitions;
 
     public DesktopModeController(Context context, ShellInit shellInit,
             ShellTaskOrganizer shellTaskOrganizer,
             RootDisplayAreaOrganizer rootDisplayAreaOrganizer,
-            @ShellMainThread Handler mainHandler) {
+            @ShellMainThread Handler mainHandler,
+            Transitions transitions) {
         mContext = context;
         mShellTaskOrganizer = shellTaskOrganizer;
         mRootDisplayAreaOrganizer = rootDisplayAreaOrganizer;
         mSettingsObserver = new SettingsObserver(mContext, mainHandler);
+        mTransitions = transitions;
         shellInit.addInitCallback(this::onInit, this);
     }
 
@@ -89,8 +94,12 @@ public class DesktopModeController {
         }
         wct.merge(mRootDisplayAreaOrganizer.prepareWindowingModeChange(displayId,
                 targetWindowingMode), true /* transfer */);
+        if (Transitions.ENABLE_SHELL_TRANSITIONS) {
+            mTransitions.startTransition(TRANSIT_CHANGE, wct, null);
+        } else {
             mRootDisplayAreaOrganizer.applyTransaction(wct);
         }
+    }
 
     /**
      * A {@link ContentObserver} for listening to changes to {@link Settings.System#DESKTOP_MODE}

libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/desktopmode/DesktopModeControllerTest.java

@@ -43,6 +43,7 @@ import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.ShellTestCase;
 import com.android.wm.shell.common.ShellExecutor;
 import com.android.wm.shell.sysui.ShellInit;
+import com.android.wm.shell.transition.Transitions;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -63,6 +64,8 @@ public class DesktopModeControllerTest extends ShellTestCase {
     private ShellExecutor mTestExecutor;
     @Mock
     private Handler mMockHandler;
+    @Mock
+    private Transitions mMockTransitions;
 
     private DesktopModeController mController;
     private ShellInit mShellInit;
@@ -72,7 +75,7 @@ public class DesktopModeControllerTest extends ShellTestCase {
         mShellInit = Mockito.spy(new ShellInit(mTestExecutor));
 
         mController = new DesktopModeController(mContext, mShellInit, mShellTaskOrganizer,
-                mRootDisplayAreaOrganizer, mMockHandler);
+                mRootDisplayAreaOrganizer, mMockHandler, mMockTransitions);
 
         mShellInit.init();
     }