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Prevent windows of embedding activities excluded from a11y

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Unable to switch focus to the left pane while a11y
tools enabled because only the top-most visible
window in the Task was interested in A11y.

Allowing the top-most visible window of each TaskFragment
to be focused in a11y.

Bug: 198739177
Test: change focus to left pane in talkback mode
Change-Id: Ie7d7d44018ae4ec7cd17b876f352d43c2f3a11a5
This commit is contained in:
Louis Chang
2021-09-07 15:29:01 +08:00
parent 506fa0bebd
commit cce2d8a9ce
1 changed files with 12 additions and 10 deletions
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22
services/core/java/com/android/server/wm/AccessibilityController.java
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@@ -1701,7 +1701,7 @@ final class AccessibilityController {
boolean focusedWindowAdded = false;
final int visibleWindowCount = visibleWindows.size();
HashSet<Integer> skipRemainingWindowsForTasks = new HashSet<>();
ArrayList<TaskFragment> skipRemainingWindowsForTaskFragments = new ArrayList<>();
ArrayList<ShellRoot> shellRoots = getSortedShellRoots(dc.mShellRoots);
@@ -1723,10 +1723,10 @@ final class AccessibilityController {
computeWindowRegionInScreen(windowState, regionInScreen);
if (windowMattersToAccessibility(windowState, regionInScreen, unaccountedSpace,
skipRemainingWindowsForTasks)) {
skipRemainingWindowsForTaskFragments)) {
addPopulatedWindowInfo(windowState, regionInScreen, windows, addedWindows);
updateUnaccountedSpace(windowState, regionInScreen, unaccountedSpace,
skipRemainingWindowsForTasks);
skipRemainingWindowsForTaskFragments);
focusedWindowAdded |= windowState.isFocused();
} else if (isUntouchableNavigationBar(windowState, mTempRegion1)) {
// If this widow is navigation bar without touchable region, accounting the
@@ -1782,7 +1782,7 @@ final class AccessibilityController {
private boolean windowMattersToAccessibility(WindowState windowState,
Region regionInScreen, Region unaccountedSpace,
HashSet<Integer> skipRemainingWindowsForTasks) {
ArrayList<TaskFragment> skipRemainingWindowsForTaskFragments) {
final RecentsAnimationController controller = mService.getRecentsAnimationController();
if (controller != null && controller.shouldIgnoreForAccessibility(windowState)) {
return false;
@@ -1793,8 +1793,9 @@ final class AccessibilityController {
}
// If the window is part of a task that we're finished with - ignore.
final Task task = windowState.getTask();
if (task != null && skipRemainingWindowsForTasks.contains(task.mTaskId)) {
final TaskFragment taskFragment = windowState.getTaskFragment();
if (taskFragment != null
&& skipRemainingWindowsForTaskFragments.contains(taskFragment)) {
return false;
}
@@ -1820,7 +1821,8 @@ final class AccessibilityController {
}
private void updateUnaccountedSpace(WindowState windowState, Region regionInScreen,
Region unaccountedSpace, HashSet<Integer> skipRemainingWindowsForTasks) {
Region unaccountedSpace,
ArrayList<TaskFragment> skipRemainingWindowsForTaskFragments) {
if (windowState.mAttrs.type
!= WindowManager.LayoutParams.TYPE_ACCESSIBILITY_OVERLAY) {
@@ -1850,11 +1852,11 @@ final class AccessibilityController {
Region.Op.REVERSE_DIFFERENCE);
}
final Task task = windowState.getTask();
if (task != null) {
final TaskFragment taskFragment = windowState.getTaskFragment();
if (taskFragment != null) {
// If the window is associated with a particular task, we can skip the
// rest of the windows for that task.
skipRemainingWindowsForTasks.add(task.mTaskId);
skipRemainingWindowsForTaskFragments.add(taskFragment);
} else if (!windowState.hasTapExcludeRegion()) {
// If the window is not associated with a particular task, then it is
// globally modal. In this case we can skip all remaining windows when