Merge "Fix AccessibilityNode's isVisibleToUser behavior." into lmp-dev
diff --git a/core/java/android/view/AccessibilityInteractionController.java b/core/java/android/view/AccessibilityInteractionController.java
index 477c994..a10dda3 100644
--- a/core/java/android/view/AccessibilityInteractionController.java
+++ b/core/java/android/view/AccessibilityInteractionController.java
@@ -18,6 +18,7 @@
import android.graphics.Point;
import android.graphics.Rect;
+import android.graphics.Region;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
@@ -96,7 +97,7 @@
}
public void findAccessibilityNodeInfoByAccessibilityIdClientThread(
- long accessibilityNodeId, int interactionId,
+ long accessibilityNodeId, Region interactiveRegion, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
long interrogatingTid, MagnificationSpec spec) {
Message message = mHandler.obtainMessage();
@@ -109,6 +110,7 @@
args.argi3 = interactionId;
args.arg1 = callback;
args.arg2 = spec;
+ args.arg3 = interactiveRegion;
message.obj = args;
// If the interrogation is performed by the same thread as the main UI
@@ -133,6 +135,7 @@
final IAccessibilityInteractionConnectionCallback callback =
(IAccessibilityInteractionConnectionCallback) args.arg1;
final MagnificationSpec spec = (MagnificationSpec) args.arg2;
+ final Region interactiveRegion = (Region) args.arg3;
args.recycle();
@@ -159,6 +162,7 @@
if (spec != null) {
spec.recycle();
}
+ adjustIsVisibleToUserIfNeeded(infos, interactiveRegion);
callback.setFindAccessibilityNodeInfosResult(infos, interactionId);
infos.clear();
} catch (RemoteException re) {
@@ -168,8 +172,9 @@
}
public void findAccessibilityNodeInfosByViewIdClientThread(long accessibilityNodeId,
- String viewId, int interactionId, IAccessibilityInteractionConnectionCallback callback,
- int flags, int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
+ String viewId, Region interactiveRegion, int interactionId,
+ IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
+ long interrogatingTid, MagnificationSpec spec) {
Message message = mHandler.obtainMessage();
message.what = PrivateHandler.MSG_FIND_ACCESSIBLITY_NODE_INFOS_BY_VIEW_ID;
message.arg1 = flags;
@@ -180,6 +185,7 @@
args.arg1 = callback;
args.arg2 = spec;
args.arg3 = viewId;
+ args.arg4 = interactiveRegion;
message.obj = args;
@@ -205,6 +211,7 @@
(IAccessibilityInteractionConnectionCallback) args.arg1;
final MagnificationSpec spec = (MagnificationSpec) args.arg2;
final String viewId = (String) args.arg3;
+ final Region interactiveRegion = (Region) args.arg4;
args.recycle();
@@ -241,6 +248,7 @@
if (spec != null) {
spec.recycle();
}
+ adjustIsVisibleToUserIfNeeded(infos, interactiveRegion);
callback.setFindAccessibilityNodeInfosResult(infos, interactionId);
} catch (RemoteException re) {
/* ignore - the other side will time out */
@@ -249,8 +257,9 @@
}
public void findAccessibilityNodeInfosByTextClientThread(long accessibilityNodeId,
- String text, int interactionId, IAccessibilityInteractionConnectionCallback callback,
- int flags, int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
+ String text, Region interactiveRegion, int interactionId,
+ IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
+ long interrogatingTid, MagnificationSpec spec) {
Message message = mHandler.obtainMessage();
message.what = PrivateHandler.MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT;
message.arg1 = flags;
@@ -262,6 +271,7 @@
args.argi1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId);
args.argi2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId);
args.argi3 = interactionId;
+ args.arg4 = interactiveRegion;
message.obj = args;
// If the interrogation is performed by the same thread as the main UI
@@ -287,6 +297,7 @@
final int accessibilityViewId = args.argi1;
final int virtualDescendantId = args.argi2;
final int interactionId = args.argi3;
+ final Region interactiveRegion = (Region) args.arg4;
args.recycle();
List<AccessibilityNodeInfo> infos = null;
@@ -347,6 +358,7 @@
if (spec != null) {
spec.recycle();
}
+ adjustIsVisibleToUserIfNeeded(infos, interactiveRegion);
callback.setFindAccessibilityNodeInfosResult(infos, interactionId);
} catch (RemoteException re) {
/* ignore - the other side will time out */
@@ -354,7 +366,8 @@
}
}
- public void findFocusClientThread(long accessibilityNodeId, int focusType, int interactionId,
+ public void findFocusClientThread(long accessibilityNodeId, int focusType,
+ Region interactiveRegion, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags, int interogatingPid,
long interrogatingTid, MagnificationSpec spec) {
Message message = mHandler.obtainMessage();
@@ -368,6 +381,7 @@
args.argi3 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId);
args.arg1 = callback;
args.arg2 = spec;
+ args.arg3 = interactiveRegion;
message.obj = args;
@@ -394,6 +408,7 @@
final IAccessibilityInteractionConnectionCallback callback =
(IAccessibilityInteractionConnectionCallback) args.arg1;
final MagnificationSpec spec = (MagnificationSpec) args.arg2;
+ final Region interactiveRegion = (Region) args.arg3;
args.recycle();
AccessibilityNodeInfo focused = null;
@@ -457,6 +472,7 @@
if (spec != null) {
spec.recycle();
}
+ adjustIsVisibleToUserIfNeeded(focused, interactiveRegion);
callback.setFindAccessibilityNodeInfoResult(focused, interactionId);
} catch (RemoteException re) {
/* ignore - the other side will time out */
@@ -464,7 +480,8 @@
}
}
- public void focusSearchClientThread(long accessibilityNodeId, int direction, int interactionId,
+ public void focusSearchClientThread(long accessibilityNodeId, int direction,
+ Region interactiveRegion, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags, int interogatingPid,
long interrogatingTid, MagnificationSpec spec) {
Message message = mHandler.obtainMessage();
@@ -477,6 +494,7 @@
args.argi3 = interactionId;
args.arg1 = callback;
args.arg2 = spec;
+ args.arg3 = interactiveRegion;
message.obj = args;
@@ -502,6 +520,7 @@
final IAccessibilityInteractionConnectionCallback callback =
(IAccessibilityInteractionConnectionCallback) args.arg1;
final MagnificationSpec spec = (MagnificationSpec) args.arg2;
+ final Region interactiveRegion = (Region) args.arg3;
args.recycle();
@@ -530,6 +549,7 @@
if (spec != null) {
spec.recycle();
}
+ adjustIsVisibleToUserIfNeeded(next, interactiveRegion);
callback.setFindAccessibilityNodeInfoResult(next, interactionId);
} catch (RemoteException re) {
/* ignore - the other side will time out */
@@ -644,6 +664,30 @@
}
}
+ private void adjustIsVisibleToUserIfNeeded(List<AccessibilityNodeInfo> infos,
+ Region interactiveRegion) {
+ if (interactiveRegion == null || infos == null) {
+ return;
+ }
+ final int infoCount = infos.size();
+ for (int i = 0; i < infoCount; i++) {
+ AccessibilityNodeInfo info = infos.get(i);
+ adjustIsVisibleToUserIfNeeded(info, interactiveRegion);
+ }
+ }
+
+ private void adjustIsVisibleToUserIfNeeded(AccessibilityNodeInfo info,
+ Region interactiveRegion) {
+ if (interactiveRegion == null || info == null) {
+ return;
+ }
+ Rect boundsInScreen = mTempRect;
+ info.getBoundsInScreen(boundsInScreen);
+ if (interactiveRegion.quickReject(boundsInScreen)) {
+ info.setVisibleToUser(false);
+ }
+ }
+
private void applyAppScaleAndMagnificationSpecIfNeeded(AccessibilityNodeInfo info,
MagnificationSpec spec) {
if (info == null) {
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 49d925f..dd1cbc9 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -6629,14 +6629,15 @@
@Override
public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId,
- int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
+ Region interactiveRegion, int interactionId,
+ IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId,
- interactionId, callback, flags, interrogatingPid, interrogatingTid,
- spec);
+ interactiveRegion, interactionId, callback, flags, interrogatingPid,
+ interrogatingTid, spec);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
@@ -6669,15 +6670,15 @@
@Override
public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId,
- String viewId, int interactionId,
+ String viewId, Region interactiveRegion, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId,
- viewId, interactionId, callback, flags, interrogatingPid,
- interrogatingTid, spec);
+ viewId, interactiveRegion, interactionId, callback, flags,
+ interrogatingPid, interrogatingTid, spec);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
@@ -6690,14 +6691,15 @@
@Override
public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text,
- int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
+ Region interactiveRegion, int interactionId,
+ IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text,
- interactionId, callback, flags, interrogatingPid, interrogatingTid,
- spec);
+ interactiveRegion, interactionId, callback, flags, interrogatingPid,
+ interrogatingTid, spec);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
@@ -6709,14 +6711,15 @@
}
@Override
- public void findFocus(long accessibilityNodeId, int focusType, int interactionId,
- IAccessibilityInteractionConnectionCallback callback, int flags,
+ public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion,
+ int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
- .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback,
- flags, interrogatingPid, interrogatingTid, spec);
+ .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion,
+ interactionId, callback, flags, interrogatingPid, interrogatingTid,
+ spec);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
@@ -6728,14 +6731,15 @@
}
@Override
- public void focusSearch(long accessibilityNodeId, int direction, int interactionId,
- IAccessibilityInteractionConnectionCallback callback, int flags,
+ public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion,
+ int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid, MagnificationSpec spec) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
- .focusSearchClientThread(accessibilityNodeId, direction, interactionId,
- callback, flags, interrogatingPid, interrogatingTid, spec);
+ .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion,
+ interactionId, callback, flags, interrogatingPid, interrogatingTid,
+ spec);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
diff --git a/core/java/android/view/accessibility/IAccessibilityInteractionConnection.aidl b/core/java/android/view/accessibility/IAccessibilityInteractionConnection.aidl
index 8d15472..faf7789 100644
--- a/core/java/android/view/accessibility/IAccessibilityInteractionConnection.aidl
+++ b/core/java/android/view/accessibility/IAccessibilityInteractionConnection.aidl
@@ -16,6 +16,7 @@
package android.view.accessibility;
+import android.graphics.Region;
import android.os.Bundle;
import android.view.MagnificationSpec;
import android.view.accessibility.AccessibilityNodeInfo;
@@ -29,23 +30,23 @@
*/
oneway interface IAccessibilityInteractionConnection {
- void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, int interactionId,
- IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
- long interrogatingTid, in MagnificationSpec spec);
-
- void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, String viewId,
+ void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, in Region bounds,
int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid, in MagnificationSpec spec);
- void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, int interactionId,
+ void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, String viewId,
+ in Region bounds, int interactionId, IAccessibilityInteractionConnectionCallback callback,
+ int flags, int interrogatingPid, long interrogatingTid, in MagnificationSpec spec);
+
+ void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, in Region bounds,
+ int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
+ int interrogatingPid, long interrogatingTid, in MagnificationSpec spec);
+
+ void findFocus(long accessibilityNodeId, int focusType, in Region bounds, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
long interrogatingTid, in MagnificationSpec spec);
- void findFocus(long accessibilityNodeId, int focusType, int interactionId,
- IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
- long interrogatingTid, in MagnificationSpec spec);
-
- void focusSearch(long accessibilityNodeId, int direction, int interactionId,
+ void focusSearch(long accessibilityNodeId, int direction, in Region bounds, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags, int interrogatingPid,
long interrogatingTid, in MagnificationSpec spec);
diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
index 4e2f52c..5d13fed 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
@@ -42,6 +42,7 @@
import android.database.ContentObserver;
import android.graphics.Point;
import android.graphics.Rect;
+import android.graphics.Region;
import android.hardware.display.DisplayManager;
import android.hardware.input.InputManager;
import android.net.Uri;
@@ -162,6 +163,8 @@
private final List<AccessibilityServiceInfo> mEnabledServicesForFeedbackTempList =
new ArrayList<>();
+ private final Region mTempRegion = new Region();
+
private final Rect mTempRect = new Rect();
private final Point mTempPoint = new Point();
@@ -2161,6 +2164,7 @@
throws RemoteException {
final int resolvedWindowId;
IAccessibilityInteractionConnection connection = null;
+ Region partialInteractiveRegion = mTempRegion;
synchronized (mLock) {
// We treat calls from a profile as if made by its parent as profiles
// share the accessibility state of the parent. The call below
@@ -2182,13 +2186,17 @@
return false;
}
}
+ if (!mSecurityPolicy.computePartialInteractiveRegionForWindowLocked(
+ resolvedWindowId, partialInteractiveRegion)) {
+ partialInteractiveRegion = null;
+ }
}
final int interrogatingPid = Binder.getCallingPid();
final long identityToken = Binder.clearCallingIdentity();
MagnificationSpec spec = getCompatibleMagnificationSpecLocked(resolvedWindowId);
try {
- connection.findAccessibilityNodeInfosByViewId(accessibilityNodeId,
- viewIdResName, interactionId, callback, mFetchFlags, interrogatingPid,
+ connection.findAccessibilityNodeInfosByViewId(accessibilityNodeId, viewIdResName,
+ partialInteractiveRegion, interactionId, callback, mFetchFlags, interrogatingPid,
interrogatingTid, spec);
return true;
} catch (RemoteException re) {
@@ -2208,6 +2216,7 @@
throws RemoteException {
final int resolvedWindowId;
IAccessibilityInteractionConnection connection = null;
+ Region partialInteractiveRegion = mTempRegion;
synchronized (mLock) {
// We treat calls from a profile as if made by its parent as profiles
// share the accessibility state of the parent. The call below
@@ -2229,14 +2238,18 @@
return false;
}
}
+ if (!mSecurityPolicy.computePartialInteractiveRegionForWindowLocked(
+ resolvedWindowId, partialInteractiveRegion)) {
+ partialInteractiveRegion = null;
+ }
}
final int interrogatingPid = Binder.getCallingPid();
final long identityToken = Binder.clearCallingIdentity();
MagnificationSpec spec = getCompatibleMagnificationSpecLocked(resolvedWindowId);
try {
connection.findAccessibilityNodeInfosByText(accessibilityNodeId, text,
- interactionId, callback, mFetchFlags, interrogatingPid, interrogatingTid,
- spec);
+ partialInteractiveRegion, interactionId, callback, mFetchFlags, interrogatingPid,
+ interrogatingTid, spec);
return true;
} catch (RemoteException re) {
if (DEBUG) {
@@ -2255,6 +2268,7 @@
long interrogatingTid) throws RemoteException {
final int resolvedWindowId;
IAccessibilityInteractionConnection connection = null;
+ Region partialInteractiveRegion = mTempRegion;
synchronized (mLock) {
// We treat calls from a profile as if made by its parent as profiles
// share the accessibility state of the parent. The call below
@@ -2276,14 +2290,18 @@
return false;
}
}
+ if (!mSecurityPolicy.computePartialInteractiveRegionForWindowLocked(
+ resolvedWindowId, partialInteractiveRegion)) {
+ partialInteractiveRegion = null;
+ }
}
final int interrogatingPid = Binder.getCallingPid();
final long identityToken = Binder.clearCallingIdentity();
MagnificationSpec spec = getCompatibleMagnificationSpecLocked(resolvedWindowId);
try {
connection.findAccessibilityNodeInfoByAccessibilityId(accessibilityNodeId,
- interactionId, callback, mFetchFlags | flags, interrogatingPid,
- interrogatingTid, spec);
+ partialInteractiveRegion, interactionId, callback, mFetchFlags | flags,
+ interrogatingPid, interrogatingTid, spec);
return true;
} catch (RemoteException re) {
if (DEBUG) {
@@ -2302,6 +2320,7 @@
throws RemoteException {
final int resolvedWindowId;
IAccessibilityInteractionConnection connection = null;
+ Region partialInteractiveRegion = mTempRegion;
synchronized (mLock) {
// We treat calls from a profile as if made by its parent as profiles
// share the accessibility state of the parent. The call below
@@ -2324,13 +2343,17 @@
return false;
}
}
+ if (!mSecurityPolicy.computePartialInteractiveRegionForWindowLocked(
+ resolvedWindowId, partialInteractiveRegion)) {
+ partialInteractiveRegion = null;
+ }
}
final int interrogatingPid = Binder.getCallingPid();
final long identityToken = Binder.clearCallingIdentity();
MagnificationSpec spec = getCompatibleMagnificationSpecLocked(resolvedWindowId);
try {
- connection.findFocus(accessibilityNodeId, focusType, interactionId, callback,
- mFetchFlags, interrogatingPid, interrogatingTid, spec);
+ connection.findFocus(accessibilityNodeId, focusType, partialInteractiveRegion, interactionId,
+ callback, mFetchFlags, interrogatingPid, interrogatingTid, spec);
return true;
} catch (RemoteException re) {
if (DEBUG) {
@@ -2349,6 +2372,7 @@
throws RemoteException {
final int resolvedWindowId;
IAccessibilityInteractionConnection connection = null;
+ Region partialInteractiveRegion = mTempRegion;
synchronized (mLock) {
// We treat calls from a profile as if made by its parent as profiles
// share the accessibility state of the parent. The call below
@@ -2370,13 +2394,17 @@
return false;
}
}
+ if (!mSecurityPolicy.computePartialInteractiveRegionForWindowLocked(
+ resolvedWindowId, partialInteractiveRegion)) {
+ partialInteractiveRegion = null;
+ }
}
final int interrogatingPid = Binder.getCallingPid();
final long identityToken = Binder.clearCallingIdentity();
MagnificationSpec spec = getCompatibleMagnificationSpecLocked(resolvedWindowId);
try {
- connection.focusSearch(accessibilityNodeId, direction, interactionId, callback,
- mFetchFlags, interrogatingPid, interrogatingTid, spec);
+ connection.focusSearch(accessibilityNodeId, direction, partialInteractiveRegion, interactionId,
+ callback, mFetchFlags, interrogatingPid, interrogatingTid, spec);
return true;
} catch (RemoteException re) {
if (DEBUG) {
@@ -3288,6 +3316,42 @@
}
}
+ public boolean computePartialInteractiveRegionForWindowLocked(int windowId,
+ Region outRegion) {
+ if (mWindows == null) {
+ return false;
+ }
+
+ // Windows are ordered in z order so start from the botton and find
+ // the window of interest. After that all windows that cover it should
+ // be subtracted from the resulting region. Note that for accessibility
+ // we are returning only interactive windows.
+ Region windowInteractiveRegion = null;
+ boolean windowInteractiveRegionChanged = false;
+
+ final int windowCount = mWindows.size();
+ for (int i = windowCount - 1; i >= 0; i--) {
+ AccessibilityWindowInfo currentWindow = mWindows.get(i);
+ if (windowInteractiveRegion == null) {
+ if (currentWindow.getId() == windowId) {
+ Rect currentWindowBounds = mTempRect;
+ currentWindow.getBoundsInScreen(currentWindowBounds);
+ outRegion.set(currentWindowBounds);
+ windowInteractiveRegion = outRegion;
+ continue;
+ }
+ } else {
+ Rect currentWindowBounds = mTempRect;
+ currentWindow.getBoundsInScreen(currentWindowBounds);
+ if (windowInteractiveRegion.op(currentWindowBounds, Region.Op.DIFFERENCE)) {
+ windowInteractiveRegionChanged = true;
+ }
+ }
+ }
+
+ return windowInteractiveRegionChanged;
+ }
+
public void updateEventSourceLocked(AccessibilityEvent event) {
if ((event.getEventType() & RETRIEVAL_ALLOWING_EVENT_TYPES) == 0) {
event.setSource(null);