Always notify SystemUI when launching activity to existing task

- SysUI can determine what to do based on the type of activity launched
  (ie. expand PIP/Bubbles to fullscreen)

Bug: 148977481
Test: atest TaskStackChangedListenerTest
Test: Launch app in split primary, ensure launching app again triggers
      recents
Test: Launch app in PIP, ensure launching app again triggers it to go
      fullscreen
Test: Launch app in bubble, ensure launching app again triggers bubble
      to expand
Change-Id: I754a71a72dd0e660930b19acbf9fe6ccbb453152
diff --git a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
index 48457f6..0a461e1 100644
--- a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
+++ b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
@@ -1233,6 +1233,17 @@
         }
 
         @Override
+        public void onActivityRestartAttempt(RunningTaskInfo task, boolean homeTaskVisible,
+                boolean clearedTask) {
+            for (Bubble b : mBubbleData.getBubbles()) {
+                if (b.getDisplayId() == task.displayId) {
+                    expandStackAndSelectBubble(b.getKey());
+                    return;
+                }
+            }
+        }
+
+        @Override
         public void onActivityLaunchOnSecondaryDisplayRerouted() {
             if (mStackView != null) {
                 mBubbleData.setExpanded(false);
diff --git a/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java b/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java
index 8ada3c3..9267907 100644
--- a/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java
+++ b/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java
@@ -127,7 +127,12 @@
         }
 
         @Override
-        public void onPinnedActivityRestartAttempt(boolean clearedTask) {
+        public void onActivityRestartAttempt(ActivityManager.RunningTaskInfo task,
+                boolean homeTaskVisible, boolean clearedTask) {
+            if (task.configuration.windowConfiguration.getWindowingMode()
+                    != WINDOWING_MODE_PINNED) {
+                return;
+            }
             mTouchHandler.getMotionHelper().expandPip(clearedTask /* skipAnimation */);
         }
     };
diff --git a/packages/SystemUI/src/com/android/systemui/pip/tv/PipManager.java b/packages/SystemUI/src/com/android/systemui/pip/tv/PipManager.java
index cb1a218..cc9993d 100644
--- a/packages/SystemUI/src/com/android/systemui/pip/tv/PipManager.java
+++ b/packages/SystemUI/src/com/android/systemui/pip/tv/PipManager.java
@@ -678,7 +678,12 @@
         }
 
         @Override
-        public void onPinnedActivityRestartAttempt(boolean clearedTask) {
+        public void onActivityRestartAttempt(RunningTaskInfo task, boolean homeTaskVisible,
+                boolean clearedTask) {
+            if (task.configuration.windowConfiguration.getWindowingMode()
+                    != WINDOWING_MODE_PINNED) {
+                return;
+            }
             if (DEBUG) Log.d(TAG, "onPinnedActivityRestartAttempt()");
 
             // If PIPed activity is launched again by Launcher or intent, make it fullscreen.
diff --git a/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyRecentsImpl.java b/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyRecentsImpl.java
index f3e2f10..5bf44c6 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyRecentsImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyRecentsImpl.java
@@ -20,6 +20,8 @@
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS;
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED;
 
+import static com.android.systemui.shared.system.WindowManagerWrapper.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
+
 import android.annotation.Nullable;
 import android.app.ActivityManager;
 import android.app.trust.TrustManager;
@@ -37,6 +39,7 @@
 import com.android.systemui.R;
 import com.android.systemui.shared.recents.IOverviewProxy;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
+import com.android.systemui.shared.system.TaskStackChangeListener;
 import com.android.systemui.stackdivider.Divider;
 import com.android.systemui.statusbar.phone.StatusBar;
 
@@ -63,6 +66,21 @@
     private TrustManager mTrustManager;
     private OverviewProxyService mOverviewProxyService;
 
+    private TaskStackChangeListener mListener = new TaskStackChangeListener() {
+        @Override
+        public void onActivityRestartAttempt(ActivityManager.RunningTaskInfo task,
+                boolean homeTaskVisible, boolean clearedTask) {
+            if (task.configuration.windowConfiguration.getWindowingMode()
+                    != WINDOWING_MODE_SPLIT_SCREEN_PRIMARY) {
+                return;
+            }
+
+            if (homeTaskVisible) {
+                showRecentApps(false /* triggeredFromAltTab */);
+            }
+        }
+    };
+
     @SuppressWarnings("OptionalUsedAsFieldOrParameterType")
     @Inject
     public OverviewProxyRecentsImpl(Optional<Lazy<StatusBar>> statusBarLazy,
@@ -77,6 +95,7 @@
         mHandler = new Handler();
         mTrustManager = (TrustManager) context.getSystemService(Context.TRUST_SERVICE);
         mOverviewProxyService = Dependency.get(OverviewProxyService.class);
+        ActivityManagerWrapper.getInstance().registerTaskStackListener(mListener);
     }
 
     @Override