Merge "Using IHomeTransitionListener for listening for Launcher state when taskbar recreates" into main
diff --git a/quickstep/src/com/android/launcher3/HomeTransitionController.java b/quickstep/src/com/android/launcher3/HomeTransitionController.java
deleted file mode 100644
index c4a2e9e..0000000
--- a/quickstep/src/com/android/launcher3/HomeTransitionController.java
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2023 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;
-
-import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
-
-import androidx.annotation.Nullable;
-
-import com.android.launcher3.uioverrides.QuickstepLauncher;
-import com.android.quickstep.SystemUiProxy;
-import com.android.wm.shell.shared.IHomeTransitionListener;
-
-/**
- * Controls launcher response to home activity visibility changing.
- */
-public class HomeTransitionController {
-
-    @Nullable private QuickstepLauncher mLauncher;
-    @Nullable private IHomeTransitionListener mHomeTransitionListener;
-
-    public void registerHomeTransitionListener(QuickstepLauncher launcher) {
-        mLauncher = launcher;
-        mHomeTransitionListener = new IHomeTransitionListener.Stub() {
-            @Override
-            public void onHomeVisibilityChanged(boolean isVisible) {
-                MAIN_EXECUTOR.execute(() -> {
-                    if (mLauncher != null && mLauncher.getTaskbarUIController() != null) {
-                        mLauncher.getTaskbarUIController().onLauncherVisibilityChanged(isVisible);
-                    }
-                });
-            }
-        };
-
-        SystemUiProxy.INSTANCE.get(mLauncher).setHomeTransitionListener(mHomeTransitionListener);
-    }
-
-    public void unregisterHomeTransitionListener() {
-        SystemUiProxy.INSTANCE.get(mLauncher).setHomeTransitionListener(null);
-        mHomeTransitionListener = null;
-        mLauncher = null;
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index a59aead..def6287 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -35,6 +35,7 @@
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Flags;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.QuickstepTransitionManager;
 import com.android.launcher3.R;
@@ -49,8 +50,10 @@
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.MultiPropertyFactory;
 import com.android.launcher3.util.OnboardingPrefs;
+import com.android.quickstep.HomeVisibilityState;
 import com.android.quickstep.LauncherActivityInterface;
 import com.android.quickstep.RecentsAnimationCallbacks;
+import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.util.GroupTask;
 import com.android.quickstep.util.TISBindHelper;
 import com.android.quickstep.views.RecentsView;
@@ -79,6 +82,7 @@
                     AnimatedFloat.VALUE, DISPLAY_PROGRESS_COUNT, Float::max);
 
     private final QuickstepLauncher mLauncher;
+    private final HomeVisibilityState mHomeState;
 
     private final DeviceProfile.OnDeviceProfileChangeListener mOnDeviceProfileChangeListener =
             dp -> {
@@ -87,6 +91,8 @@
                     mControllers.taskbarViewController.onRotationChanged(dp);
                 }
             };
+    private final HomeVisibilityState.VisibilityChangeListener  mVisibilityChangeListener =
+            this::onLauncherVisibilityChanged;
 
     // Initialized in init.
     private final TaskbarLauncherStateController
@@ -94,6 +100,7 @@
 
     public LauncherTaskbarUIController(QuickstepLauncher launcher) {
         mLauncher = launcher;
+        mHomeState =  SystemUiProxy.INSTANCE.get(mLauncher).getHomeVisibilityState();
     }
 
     @Override
@@ -104,8 +111,11 @@
                 mControllers.getSharedState().sysuiStateFlags);
 
         mLauncher.setTaskbarUIController(this);
-
-        onLauncherVisibilityChanged(mLauncher.hasBeenResumed(), true /* fromInit */);
+        mHomeState.addListener(mVisibilityChangeListener);
+        onLauncherVisibilityChanged(
+                Flags.useActivityOverlay()
+                        ? mHomeState.isHomeVisible() : mLauncher.hasBeenResumed(),
+                true /* fromInit */);
 
         onStashedInAppChanged(mLauncher.getDeviceProfile());
         mLauncher.addOnDeviceProfileChangeListener(mOnDeviceProfileChangeListener);
@@ -129,6 +139,7 @@
 
         mLauncher.setTaskbarUIController(null);
         mLauncher.removeOnDeviceProfileChangeListener(mOnDeviceProfileChangeListener);
+        mHomeState.removeListener(mVisibilityChangeListener);
         updateTaskTransitionSpec(true);
     }
 
@@ -234,7 +245,8 @@
 
     @Override
     public void refreshResumedState() {
-        onLauncherVisibilityChanged(mLauncher.hasBeenResumed());
+        onLauncherVisibilityChanged(Flags.useActivityOverlay()
+                ? mHomeState.isHomeVisible() : mLauncher.hasBeenResumed());
     }
 
     @Override
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
index 8d48154..1a120da 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
@@ -656,7 +656,8 @@
      * Returns if the current Launcher state has hotseat on top of other elemnets.
      */
     public boolean isInHotseatOnTopStates() {
-        return mLauncherState != LauncherState.ALL_APPS;
+        return mLauncherState != LauncherState.ALL_APPS
+                && !mLauncher.getWorkspace().isOverlayShown();
     }
 
     boolean isInOverview() {
diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index b49c752..8b923ad 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -62,8 +62,8 @@
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 import static com.android.quickstep.util.AnimUtils.completeRunnableListCallback;
 import static com.android.quickstep.util.SplitAnimationTimings.TABLET_HOME_TO_SPLIT;
-import static com.android.window.flags.Flags.enableDesktopWindowingMode;
 import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_HOME_KEY;
+import static com.android.window.flags.Flags.enableDesktopWindowingMode;
 import static com.android.wm.shell.common.split.SplitScreenConstants.SNAP_TO_50_50;
 
 import android.animation.Animator;
@@ -105,7 +105,6 @@
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Flags;
-import com.android.launcher3.HomeTransitionController;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherSettings.Favorites;
@@ -245,8 +244,6 @@
 
     private boolean mIsPredictiveBackToHomeInProgress;
 
-    private HomeTransitionController mHomeTransitionController;
-
     @Override
     protected void setupViews() {
         super.setupViews();
@@ -277,11 +274,6 @@
         mAppTransitionManager.registerRemoteAnimations();
         mAppTransitionManager.registerRemoteTransitions();
 
-        if (FeatureFlags.enableHomeTransitionListener()) {
-            mHomeTransitionController = new HomeTransitionController();
-            mHomeTransitionController.registerHomeTransitionListener(this);
-        }
-
         mTISBindHelper = new TISBindHelper(this, this::onTISConnected);
         mDepthController = new DepthController(this);
         mDesktopVisibilityController = new DesktopVisibilityController(this);
@@ -523,10 +515,6 @@
             mLauncherUnfoldAnimationController.onDestroy();
         }
 
-        if (mHomeTransitionController != null) {
-            mHomeTransitionController.unregisterHomeTransitionListener();
-        }
-
         if (mDesktopVisibilityController != null) {
             mDesktopVisibilityController.unregisterSystemUiListener();
         }
diff --git a/quickstep/src/com/android/quickstep/HomeVisibilityState.kt b/quickstep/src/com/android/quickstep/HomeVisibilityState.kt
new file mode 100644
index 0000000..241e16d
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/HomeVisibilityState.kt
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2024 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.quickstep
+
+import android.os.RemoteException
+import android.util.Log
+import com.android.launcher3.config.FeatureFlags
+import com.android.launcher3.util.Executors
+import com.android.wm.shell.shared.IHomeTransitionListener.Stub
+import com.android.wm.shell.shared.IShellTransitions
+
+/** Class to track visibility state of Launcher */
+class HomeVisibilityState {
+
+    var isHomeVisible = true
+        private set
+
+    private var listeners = mutableSetOf<VisibilityChangeListener>()
+
+    fun addListener(l: VisibilityChangeListener) = listeners.add(l)
+
+    fun removeListener(l: VisibilityChangeListener) = listeners.remove(l)
+
+    fun init(transitions: IShellTransitions?) {
+        if (!FeatureFlags.enableHomeTransitionListener()) return
+        try {
+            transitions?.setHomeTransitionListener(
+                object : Stub() {
+                    override fun onHomeVisibilityChanged(isVisible: Boolean) {
+                        Executors.MAIN_EXECUTOR.execute {
+                            isHomeVisible = isVisible
+                            listeners.forEach { it.onHomeVisibilityChanged(isVisible) }
+                        }
+                    }
+                }
+            )
+        } catch (e: RemoteException) {
+            Log.w(TAG, "Failed call setHomeTransitionListener", e)
+        }
+    }
+
+    interface VisibilityChangeListener {
+        fun onHomeVisibilityChanged(isVisible: Boolean)
+    }
+
+    override fun toString() = "{HomeVisibilityState isHomeVisible=$isHomeVisible}"
+
+    companion object {
+
+        private const val TAG = "HomeVisibilityState"
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
index 97c48e6..7c17e4e 100644
--- a/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/LauncherActivityInterface.java
@@ -35,6 +35,7 @@
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Flags;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherAnimUtils;
 import com.android.launcher3.LauncherInitListener;
@@ -206,8 +207,17 @@
     @UiThread
     private Launcher getVisibleLauncher() {
         Launcher launcher = getCreatedActivity();
-        return (launcher != null) && launcher.isStarted()
-                && (isInLiveTileMode() || launcher.hasBeenResumed()) ? launcher : null;
+        if (launcher == null) {
+            return null;
+        }
+        if (launcher.isStarted() && (isInLiveTileMode() || launcher.hasBeenResumed())) {
+            return launcher;
+        }
+        if (Flags.useActivityOverlay()
+                && SystemUiProxy.INSTANCE.get(launcher).getHomeVisibilityState().isHomeVisible()) {
+            return launcher;
+        }
+        return null;
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 3c3307a..4183842 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -63,7 +63,6 @@
 import com.android.internal.logging.InstanceId;
 import com.android.internal.util.ScreenshotRequest;
 import com.android.internal.view.AppearanceRegion;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.Preconditions;
 import com.android.quickstep.util.ActiveGestureLog;
@@ -92,7 +91,6 @@
 import com.android.wm.shell.onehanded.IOneHanded;
 import com.android.wm.shell.recents.IRecentTasks;
 import com.android.wm.shell.recents.IRecentTasksListener;
-import com.android.wm.shell.shared.IHomeTransitionListener;
 import com.android.wm.shell.shared.IShellTransitions;
 import com.android.wm.shell.splitscreen.ISplitScreen;
 import com.android.wm.shell.splitscreen.ISplitScreenListener;
@@ -158,7 +156,7 @@
     private IOnBackInvokedCallback mBackToLauncherCallback;
     private IRemoteAnimationRunner mBackToLauncherRunner;
     private IDragAndDrop mDragAndDrop;
-    private IHomeTransitionListener mHomeTransitionListener;
+    private final HomeVisibilityState mHomeVisibilityState = new HomeVisibilityState();
 
     // Used to dedupe calls to SystemUI
     private int mLastShelfHeight;
@@ -270,7 +268,7 @@
         setBubblesListener(mBubblesListener);
         registerSplitScreenListener(mSplitScreenListener);
         registerSplitSelectListener(mSplitSelectListener);
-        setHomeTransitionListener(mHomeTransitionListener);
+        mHomeVisibilityState.init(mShellTransitions);
         setStartingWindowListener(mStartingWindowListener);
         setLauncherUnlockAnimationController(
                 mLauncherActivityClass, mLauncherUnlockAnimationController);
@@ -1115,22 +1113,8 @@
         mRemoteTransitions.remove(remoteTransition);
     }
 
-    public void setHomeTransitionListener(IHomeTransitionListener listener) {
-        if (!FeatureFlags.enableHomeTransitionListener()) {
-            return;
-        }
-
-        mHomeTransitionListener = listener;
-
-        if (mShellTransitions != null) {
-            try {
-                mShellTransitions.setHomeTransitionListener(listener);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Failed call setHomeTransitionListener", e);
-            }
-        } else  {
-            Log.w(TAG, "Unable to call setHomeTransitionListener because ShellTransitions is null");
-        }
+    public HomeVisibilityState getHomeVisibilityState() {
+        return mHomeVisibilityState;
     }
 
     /**
@@ -1571,7 +1555,7 @@
         pw.println("\tmSplitSelectListener=" + mSplitSelectListener);
         pw.println("\tmOneHanded=" + mOneHanded);
         pw.println("\tmShellTransitions=" + mShellTransitions);
-        pw.println("\tmHomeTransitionListener=" + mHomeTransitionListener);
+        pw.println("\tmHomeVisibilityState=" + mHomeVisibilityState);
         pw.println("\tmStartingWindow=" + mStartingWindow);
         pw.println("\tmStartingWindowListener=" + mStartingWindowListener);
         pw.println("\tmSysuiUnlockAnimationController=" + mSysuiUnlockAnimationController);