Merge "Dismiss stage split when unlock after folded" into sc-v2-dev am: 3c4e9ed3b8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15371910

Change-Id: Ib8ad17a64341043c5f6618138a92a8dad53db46a

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreen.java

@@ -81,6 +81,12 @@ public interface SplitScreen {
      */
     void onKeyguardOccludedChanged(boolean occluded);
 
+    /**
+     * Called when the visibility of the keyguard changes.
+     * @param showing Indicates if the keyguard is now visible.
+     */
+    void onKeyguardVisibilityChanged(boolean showing);
+
     /** Get a string representation of a stage type */
     static String stageTypeToString(@StageType int stage) {
         switch (stage) {

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreenController.java

@@ -172,6 +172,10 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
         mStageCoordinator.onKeyguardOccludedChanged(occluded);
     }
 
+    public void onKeyguardVisibilityChanged(boolean showing) {
+        mStageCoordinator.onKeyguardVisibilityChanged(showing);
+    }
+
     public void exitSplitScreenOnHide(boolean exitSplitScreenOnHide) {
         mStageCoordinator.exitSplitScreenOnHide(exitSplitScreenOnHide);
     }
@@ -371,6 +375,13 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
                 }
             });
         }
+
+        @Override
+        public void onKeyguardVisibilityChanged(boolean showing) {
+            mMainExecutor.execute(() -> {
+                SplitScreenController.this.onKeyguardVisibilityChanged(showing);
+            });
+        }
     }
 
     /**

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java

@@ -136,7 +136,10 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
     /** Whether the device is supporting legacy split or not. */
     private boolean mUseLegacySplit;
 
-    @SplitScreen.StageType int mDismissTop = NO_DISMISS;
+    @SplitScreen.StageType private int mDismissTop = NO_DISMISS;
+
+    /** The target stage to dismiss to when unlock after folded. */
+    @SplitScreen.StageType private int mTopStageAfterFoldDismiss = STAGE_TYPE_UNDEFINED;
 
     private final Runnable mOnTransitionAnimationComplete = () -> {
         // If still playing, let it finish.
@@ -443,6 +446,13 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
         mKeyguardOccluded = occluded;
     }
 
+    void onKeyguardVisibilityChanged(boolean showing) {
+        if (!showing && mMainStage.isActive()
+                && mTopStageAfterFoldDismiss != STAGE_TYPE_UNDEFINED) {
+            exitSplitScreen(mTopStageAfterFoldDismiss == STAGE_TYPE_MAIN ? mMainStage : mSideStage);
+        }
+    }
+
     void exitSplitScreen() {
         exitSplitScreen(null /* childrenToTop */);
     }
@@ -458,6 +468,7 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
         mTaskOrganizer.applyTransaction(wct);
         // Reset divider position.
         mSplitLayout.resetDividerPosition();
+        mTopStageAfterFoldDismiss = STAGE_TYPE_UNDEFINED;
     }
 
     /**
@@ -808,8 +819,13 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
     }
 
     private void onFoldedStateChanged(boolean folded) {
-        if (folded && mMainStage.isActive()) {
-            exitSplitScreen(mMainStage);
+        mTopStageAfterFoldDismiss = STAGE_TYPE_UNDEFINED;
+        if (!folded) return;
+
+        if (mMainStage.isFocused()) {
+            mTopStageAfterFoldDismiss = STAGE_TYPE_MAIN;
+        } else if (mSideStage.isFocused()) {
+            mTopStageAfterFoldDismiss = STAGE_TYPE_SIDE;
         }
     }
 

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageTaskListener.java

@@ -97,6 +97,15 @@ class StageTaskListener implements ShellTaskOrganizer.TaskListener {
         return mChildrenTaskInfo.contains(taskId);
     }
 
+    /** @return {@code true} if this listener contains the currently focused task. */
+    boolean isFocused() {
+        if (mRootTaskInfo.isFocused) return true;
+        for (int i = mChildrenTaskInfo.size() - 1; i >= 0; --i) {
+            if (mChildrenTaskInfo.valueAt(i).isFocused) return true;
+        }
+        return false;
+    }
+
     @Override
     @CallSuper
     public void onTaskAppeared(ActivityManager.RunningTaskInfo taskInfo, SurfaceControl leash) {

packages/SystemUI/src/com/android/systemui/wmshell/WMShell.java

@@ -241,6 +241,11 @@ public final class WMShell extends SystemUI
     @VisibleForTesting
     void initSplitScreen(SplitScreen splitScreen) {
         mSplitScreenKeyguardCallback = new KeyguardUpdateMonitorCallback() {
+            @Override
+            public void onKeyguardVisibilityChanged(boolean showing) {
+                splitScreen.onKeyguardVisibilityChanged(showing);
+            }
+
             @Override
             public void onKeyguardOccludedChanged(boolean occluded) {
                 splitScreen.onKeyguardOccludedChanged(occluded);