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Merge "Fix AccessibilityService#getWindows time out" into rvc-qpr-dev

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This commit is contained in:
Ryan Lin
2020-11-20 03:36:11 +00:00
committed by Android (Google) Code Review
parent c9e117edce f78e72d8fc
commit df28f95e9e
1 changed files with 68 additions and 4 deletions
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72
services/core/java/com/android/server/wm/AccessibilityController.java
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@@ -69,6 +69,7 @@ import com.android.server.wm.WindowManagerInternal.WindowsForAccessibilityCallba
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
@@ -92,6 +93,9 @@ final class AccessibilityController {
private SparseArray<WindowsForAccessibilityObserver> mWindowsForAccessibilityObserver =
new SparseArray<>();
// Set to true if initializing window population complete.
private boolean mAllObserversInitialized = true;
public boolean setMagnificationCallbacksLocked(int displayId,
MagnificationCallbacks callbacks) {
boolean result = false;
@@ -110,7 +114,7 @@ final class AccessibilityController {
}
} else {
final DisplayMagnifier displayMagnifier = mDisplayMagnifiers.get(displayId);
if (displayMagnifier == null) {
if (displayMagnifier == null) {
throw new IllegalStateException("Magnification callbacks already cleared!");
}
displayMagnifier.destroyLocked();
@@ -150,8 +154,10 @@ final class AccessibilityController {
"Windows for accessibility callback of display "
+ displayId + " already set!");
}
mWindowsForAccessibilityObserver.put(displayId,
new WindowsForAccessibilityObserver(mService, displayId, callback));
final WindowsForAccessibilityObserver observer =
new WindowsForAccessibilityObserver(mService, displayId, callback);
mWindowsForAccessibilityObserver.put(displayId, observer);
mAllObserversInitialized &= observer.mInitialized;
} else {
if (isEmbeddedDisplay(dc)) {
// If this display is an embedded one, its window observer should be removed along
@@ -275,6 +281,41 @@ final class AccessibilityController {
if (observer != null) {
observer.performComputeChangedWindowsNotLocked(false);
}
// Since we abandon initializing observers if no window has focus, make sure all observers
// are initialized.
sendCallbackToUninitializedObserversIfNeeded();
}
private void sendCallbackToUninitializedObserversIfNeeded() {
List<WindowsForAccessibilityObserver> unInitializedObservers;
synchronized (mService.mGlobalLock) {
if (mAllObserversInitialized) {
return;
}
if (mService.mRoot.getTopFocusedDisplayContent().mCurrentFocus == null) {
return;
}
unInitializedObservers = new ArrayList<>();
for (int i = mWindowsForAccessibilityObserver.size() - 1; i >= 0; --i) {
final WindowsForAccessibilityObserver observer =
mWindowsForAccessibilityObserver.valueAt(i);
if (!observer.mInitialized) {
unInitializedObservers.add(observer);
}
}
// Reset the flag to record the new added observer.
mAllObserversInitialized = true;
}
boolean areAllObserversInitialized = true;
for (int i = unInitializedObservers.size() - 1; i >= 0; --i) {
final WindowsForAccessibilityObserver observer = unInitializedObservers.get(i);
observer.performComputeChangedWindowsNotLocked(true);
areAllObserversInitialized &= observer.mInitialized;
}
synchronized (mService.mGlobalLock) {
mAllObserversInitialized &= areAllObserversInitialized;
}
}
/**
@@ -361,6 +402,8 @@ final class AccessibilityController {
+ "Magnification display# " + mDisplayMagnifiers.keyAt(i));
}
}
pw.println(prefix
+ "mWindowsForAccessibilityObserver=" + mWindowsForAccessibilityObserver);
}
private void removeObserverOfEmbeddedDisplay(WindowsForAccessibilityObserver
@@ -1214,6 +1257,9 @@ final class AccessibilityController {
private final IntArray mEmbeddedDisplayIdList = new IntArray(0);
// Set to true if initializing window population complete.
private boolean mInitialized;
public WindowsForAccessibilityObserver(WindowManagerService windowManagerService,
int displayId,
WindowsForAccessibilityCallback callback) {
@@ -1272,10 +1318,17 @@ final class AccessibilityController {
// the window manager is still looking for where to put it.
// We will do the work when we get a focus change callback.
final WindowState topFocusedWindowState = getTopFocusWindow();
if (topFocusedWindowState == null) return;
if (topFocusedWindowState == null) {
if (DEBUG) {
Slog.d(LOG_TAG, "top focused window is null, compute it again later");
}
return;
}
final DisplayContent dc = mService.mRoot.getDisplayContent(mDisplayId);
if (dc == null) {
//It should not happen because it is created while adding the callback.
Slog.w(LOG_TAG, "display content is null, should be created later");
return;
}
final Display display = dc.getDisplay();
@@ -1362,6 +1415,7 @@ final class AccessibilityController {
// Recycle the windows as we do not need them.
clearAndRecycleWindows(windows);
mInitialized = true;
}
private boolean windowMattersToAccessibility(WindowState windowState,
@@ -1547,6 +1601,16 @@ final class AccessibilityController {
return mService.mRoot.getTopFocusedDisplayContent().mCurrentFocus;
}
@Override
public String toString() {
return "WindowsForAccessibilityObserver{"
+ "mDisplayId=" + mDisplayId
+ ", mEmbeddedDisplayIdList="
+ Arrays.toString(mEmbeddedDisplayIdList.toArray())
+ ", mInitialized=" + mInitialized
+ '}';
}
private class MyHandler extends Handler {
public static final int MESSAGE_COMPUTE_CHANGED_WINDOWS = 1;