Merge "Fix some bugs with display iteration/removal ordering" into sc-v2-dev am: 45613c7bdb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14981905

Change-Id: Id808fb2b4a90fbd7ad220971429af8f525be65ee

packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBarController.java

@@ -17,6 +17,7 @@
 package com.android.systemui.navigationbar;
 
 import static android.view.Display.DEFAULT_DISPLAY;
+import static android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR;
 import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_3BUTTON;
 
 import android.content.Context;
@@ -351,9 +352,7 @@ public class NavigationBarController implements Callbacks,
             Log.w(TAG, "Cannot get WindowManager.");
             return;
         }
-        final Context context = isOnDefaultDisplay
-                ? mContext
-                : mContext.createDisplayContext(display);
+        final Context context = mContext.createWindowContext(display, TYPE_NAVIGATION_BAR, null);
         NavigationBar navBar = new NavigationBar(context,
                 mWindowManager,
                 mAssistManagerLazy,

services/core/java/com/android/server/wm/DisplayContent.java

@@ -696,6 +696,8 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
     // well and thus won't change the top resumed / focused record
     boolean mDontMoveToTop;
 
+    private final ArrayList<ActivityRecord> mTmpActivityList = new ArrayList<>();
+
     private final Consumer<WindowState> mUpdateWindowsForAnimator = w -> {
         WindowStateAnimator winAnimator = w.mWinAnimator;
         final ActivityRecord activity = w.mActivityRecord;
@@ -2485,7 +2487,7 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
 
     @Override
     boolean isVisibleRequested() {
-        return isVisible();
+        return isVisible() && !mRemoved && !mRemoving;
     }
 
     @Override
@@ -4508,6 +4510,8 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
             }
         }
 
+        // clear first just in case.
+        mTmpActivityList.clear();
         // Time to remove any exiting applications?
         forAllRootTasks(task -> {
             final ArrayList<ActivityRecord> activities = task.mExitingActivities;
@@ -4515,16 +4519,24 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
                 final ActivityRecord activity = activities.get(j);
                 if (!activity.hasVisible && !mDisplayContent.mClosingApps.contains(activity)
                         && (!activity.mIsExiting || activity.isEmpty())) {
-                    // Make sure there is no animation running on this activity, so any windows
-                    // associated with it will be removed as soon as their animations are
-                    // complete.
-                    cancelAnimation();
-                    ProtoLog.v(WM_DEBUG_ADD_REMOVE,
-                            "performLayout: Activity exiting now removed %s", activity);
-                    activity.removeIfPossible();
+                    mTmpActivityList.add(activity);
                 }
             }
         });
+        if (!mTmpActivityList.isEmpty()) {
+            // Make sure there is no animation running on this activity, so any windows
+            // associated with it will be removed as soon as their animations are
+            // complete.
+            cancelAnimation();
+        }
+        for (int i = 0; i < mTmpActivityList.size(); ++i) {
+            final ActivityRecord activity = mTmpActivityList.get(i);
+            ProtoLog.v(WM_DEBUG_ADD_REMOVE,
+                    "performLayout: Activity exiting now removed %s", activity);
+            activity.removeIfPossible();
+        }
+        // Clear afterwards so we don't hold references.
+        mTmpActivityList.clear();
     }
 
     @Override

services/core/java/com/android/server/wm/RootWindowContainer.java

@@ -816,8 +816,7 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
         }
 
         // Initialize state of exiting tokens.
-        final int numDisplays = mChildren.size();
-        for (int displayNdx = 0; displayNdx < numDisplays; ++displayNdx) {
+        for (int displayNdx = 0; displayNdx < mChildren.size(); ++displayNdx) {
             final DisplayContent displayContent = mChildren.get(displayNdx);
             displayContent.setExitingTokensHasVisible(false);
         }
@@ -866,7 +865,7 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
             recentsAnimationController.checkAnimationReady(defaultDisplay.mWallpaperController);
         }
 
-        for (int displayNdx = 0; displayNdx < numDisplays; ++displayNdx) {
+        for (int displayNdx = 0; displayNdx < mChildren.size(); ++displayNdx) {
             final DisplayContent displayContent = mChildren.get(displayNdx);
             if (displayContent.mWallpaperMayChange) {
                 if (DEBUG_WALLPAPER_LIGHT) Slog.v(TAG, "Wallpaper may change!  Adjusting");
@@ -928,12 +927,12 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
         }
 
         // Time to remove any exiting tokens?
-        for (int displayNdx = 0; displayNdx < numDisplays; ++displayNdx) {
+        for (int displayNdx = mChildren.size() - 1; displayNdx >= 0; --displayNdx) {
             final DisplayContent displayContent = mChildren.get(displayNdx);
             displayContent.removeExistingTokensIfPossible();
         }
 
-        for (int displayNdx = 0; displayNdx < numDisplays; ++displayNdx) {
+        for (int displayNdx = 0; displayNdx < mChildren.size(); ++displayNdx) {
             final DisplayContent displayContent = mChildren.get(displayNdx);
             if (displayContent.pendingLayoutChanges != 0) {
                 displayContent.setLayoutNeeded();

services/core/java/com/android/server/wm/Task.java

@@ -6046,7 +6046,8 @@ class Task extends TaskFragment {
 
     /** Returns true if a removal action is still being deferred. */
     boolean handleCompleteDeferredRemoval() {
-        if (isAnimating(TRANSITION | CHILDREN)) {
+        if (isAnimating(TRANSITION | CHILDREN)
+                || mAtmService.getTransitionController().inTransition(this)) {
             return true;
         }
 

services/core/java/com/android/server/wm/WindowToken.java

@@ -231,6 +231,11 @@ class WindowToken extends WindowContainer<WindowState> {
             ProtoLog.w(WM_DEBUG_WINDOW_MOVEMENT,
                     "removeAllWindowsIfPossible: removing win=%s", win);
             win.removeIfPossible();
+            if (i > mChildren.size()) {
+                // It's possible for removeIfPossible to delete siblings (for example if it is a
+                // starting window, it will perform operations on the ActivityRecord).
+                i = mChildren.size();
+            }
         }
     }