Pass OverviewComponentObserver as a parameter.

Instead of instantiating a new OVerviewComponentObserver, instantiate
one in QuickstepLauncher and pass it down to relevant classes.

Test: Manual
Bug: 336155199
Flag: ACONFIG com.android.window.flags.enable_desktop_windowing_mode DEVELOPMENT
Change-Id: Ifcc40c63f0649544a92e7f6d4a00d9edcd9f7fe1

quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java

@@ -166,6 +166,8 @@ import com.android.launcher3.util.StartActivityParams;
 import com.android.launcher3.util.TouchController;
 import com.android.launcher3.widget.LauncherWidgetHolder;
 import com.android.quickstep.OverviewCommandHelper;
+import com.android.quickstep.OverviewComponentObserver;
+import com.android.quickstep.RecentsAnimationDeviceState;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskUtils;
@@ -264,6 +266,10 @@ public class QuickstepLauncher extends Launcher implements RecentsViewContainer
                         getDepthController(), getStatsLogManager(),
                         systemUiProxy, RecentsModel.INSTANCE.get(this),
                         () -> onStateBack());
+        RecentsAnimationDeviceState deviceState = new RecentsAnimationDeviceState(asContext());
+        // TODO(b/337863494): Explore use of the same OverviewComponentObserver across launcher
+        OverviewComponentObserver overviewComponentObserver = new OverviewComponentObserver(
+                asContext(), deviceState);
         if (enableDesktopWindowingMode()) {
             mDesktopRecentsTransitionController = new DesktopRecentsTransitionController(
                     getStateManager(), systemUiProxy, getIApplicationThread(),
@@ -272,7 +278,7 @@ public class QuickstepLauncher extends Launcher implements RecentsViewContainer
         overviewPanel.init(mActionsView, mSplitSelectStateController,
                 mDesktopRecentsTransitionController);
         mSplitWithKeyboardShortcutController = new SplitWithKeyboardShortcutController(this,
-                mSplitSelectStateController);
+                mSplitSelectStateController, overviewComponentObserver, deviceState);
         mSplitToWorkspaceController = new SplitToWorkspaceController(this,
                 mSplitSelectStateController);
         mActionsView.updateDimension(getDeviceProfile(), overviewPanel.getLastComputedTaskSize());
@@ -287,7 +293,8 @@ public class QuickstepLauncher extends Launcher implements RecentsViewContainer
         if (enableDesktopWindowingMode()) {
             mDesktopVisibilityController = new DesktopVisibilityController(this);
             mDesktopVisibilityController.registerSystemUiListener();
-            mSplitSelectStateController.initSplitFromDesktopController(this);
+            mSplitSelectStateController.initSplitFromDesktopController(this,
+                    overviewComponentObserver);
         }
         mHotseatPredictionController = new HotseatPredictionController(this);
 

quickstep/src/com/android/quickstep/OverviewComponentObserver.java

@@ -109,6 +109,8 @@ public final class OverviewComponentObserver {
      * Sets a listener for changes in {@link #isHomeAndOverviewSame()}
      */
     public void setOverviewChangeListener(Consumer<Boolean> overviewChangeListener) {
+        // TODO(b/337861962): This method should be able to support multiple listeners instead of
+        // one so that we can reuse the same instance of this class across multiple places
         mOverviewChangeListener = overviewChangeListener;
     }
 

quickstep/src/com/android/quickstep/util/SplitSelectStateController.java

@@ -90,7 +90,6 @@ import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
 import com.android.quickstep.OverviewComponentObserver;
 import com.android.quickstep.RecentsAnimationCallbacks;
 import com.android.quickstep.RecentsAnimationController;
-import com.android.quickstep.RecentsAnimationDeviceState;
 import com.android.quickstep.RecentsAnimationTargets;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.SplitSelectionListener;
@@ -646,8 +645,13 @@ public class SplitSelectStateController {
         }
     }
 
-    public void initSplitFromDesktopController(QuickstepLauncher launcher) {
-        initSplitFromDesktopController(new SplitFromDesktopController(launcher));
+    /**
+     * Init {@code SplitFromDesktopController}
+     */
+    public void initSplitFromDesktopController(QuickstepLauncher launcher,
+            OverviewComponentObserver overviewComponentObserver) {
+        initSplitFromDesktopController(
+                new SplitFromDesktopController(launcher, overviewComponentObserver));
     }
 
     @VisibleForTesting
@@ -956,12 +960,10 @@ public class SplitSelectStateController {
         private ISplitSelectListener mSplitSelectListener;
         private Drawable mAppIcon;
 
-        public SplitFromDesktopController(QuickstepLauncher launcher) {
+        public SplitFromDesktopController(QuickstepLauncher launcher,
+                OverviewComponentObserver overviewComponentObserver) {
             mLauncher = launcher;
-            RecentsAnimationDeviceState deviceState = new RecentsAnimationDeviceState(
-                    launcher.getApplicationContext());
-            mOverviewComponentObserver =
-                    new OverviewComponentObserver(launcher.getApplicationContext(), deviceState);
+            mOverviewComponentObserver = overviewComponentObserver;
             mSplitPlaceholderSize = mLauncher.getResources().getDimensionPixelSize(
                     R.dimen.split_placeholder_size);
             mSplitPlaceholderInset = mLauncher.getResources().getDimensionPixelSize(

quickstep/src/com/android/quickstep/util/SplitWithKeyboardShortcutController.java

@@ -62,12 +62,13 @@ public class SplitWithKeyboardShortcutController {
     private final int mSplitPlaceholderInset;
 
     public SplitWithKeyboardShortcutController(QuickstepLauncher launcher,
-            SplitSelectStateController controller) {
+            SplitSelectStateController controller,
+            OverviewComponentObserver overviewComponentObserver,
+            RecentsAnimationDeviceState deviceState) {
         mLauncher = launcher;
         mController = controller;
-        mDeviceState = new RecentsAnimationDeviceState(launcher.getApplicationContext());
-        mOverviewComponentObserver = new OverviewComponentObserver(launcher.getApplicationContext(),
-                mDeviceState);
+        mDeviceState = deviceState;
+        mOverviewComponentObserver = overviewComponentObserver;
 
         mSplitPlaceholderSize = mLauncher.getResources().getDimensionPixelSize(
                 R.dimen.split_placeholder_size);