| /* |
| ** Copyright 2009, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| package com.android.server.accessibility; |
| |
| import static android.accessibilityservice.AccessibilityServiceInfo.DEFAULT; |
| |
| import android.Manifest; |
| import android.accessibilityservice.AccessibilityService; |
| import android.accessibilityservice.AccessibilityServiceInfo; |
| import android.accessibilityservice.IAccessibilityServiceClient; |
| import android.accessibilityservice.IAccessibilityServiceConnection; |
| import android.app.AlertDialog; |
| import android.app.PendingIntent; |
| import android.app.StatusBarManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.DialogInterface.OnClickListener; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.ServiceConnection; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.ServiceInfo; |
| import android.database.ContentObserver; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.hardware.display.DisplayManager; |
| import android.hardware.input.InputManager; |
| import android.net.Uri; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Process; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| import android.text.TextUtils.SimpleStringSplitter; |
| import android.util.Pools.Pool; |
| import android.util.Pools.SimplePool; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import android.view.Display; |
| import android.view.IWindow; |
| import android.view.IWindowManager; |
| import android.view.InputDevice; |
| import android.view.InputEventConsistencyVerifier; |
| import android.view.KeyCharacterMap; |
| import android.view.KeyEvent; |
| import android.view.MagnificationSpec; |
| import android.view.WindowManager; |
| import android.view.WindowManagerPolicy; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.accessibility.AccessibilityInteractionClient; |
| import android.view.accessibility.AccessibilityManager; |
| import android.view.accessibility.AccessibilityNodeInfo; |
| import android.view.accessibility.IAccessibilityInteractionConnection; |
| import android.view.accessibility.IAccessibilityInteractionConnectionCallback; |
| import android.view.accessibility.IAccessibilityManager; |
| import android.view.accessibility.IAccessibilityManagerClient; |
| |
| import com.android.internal.R; |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.statusbar.IStatusBarService; |
| |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| /** |
| * This class is instantiated by the system as a system level service and can be |
| * accessed only by the system. The task of this service is to be a centralized |
| * event dispatch for {@link AccessibilityEvent}s generated across all processes |
| * on the device. Events are dispatched to {@link AccessibilityService}s. |
| * |
| * @hide |
| */ |
| public class AccessibilityManagerService extends IAccessibilityManager.Stub { |
| |
| private static final boolean DEBUG = false; |
| |
| private static final String LOG_TAG = "AccessibilityManagerService"; |
| |
| // TODO: This is arbitrary. When there is time implement this by watching |
| // when that accessibility services are bound. |
| private static final int WAIT_FOR_USER_STATE_FULLY_INITIALIZED_MILLIS = 3000; |
| |
| private static final String FUNCTION_REGISTER_UI_TEST_AUTOMATION_SERVICE = |
| "registerUiTestAutomationService"; |
| |
| private static final String TEMPORARY_ENABLE_ACCESSIBILITY_UNTIL_KEYGUARD_REMOVED = |
| "temporaryEnableAccessibilityStateUntilKeyguardRemoved"; |
| |
| private static final ComponentName sFakeAccessibilityServiceComponentName = |
| new ComponentName("foo.bar", "FakeService"); |
| |
| private static final String FUNCTION_DUMP = "dump"; |
| |
| private static final char COMPONENT_NAME_SEPARATOR = ':'; |
| |
| private static final int OWN_PROCESS_ID = android.os.Process.myPid(); |
| |
| private static final int MAX_POOL_SIZE = 10; |
| |
| private static int sIdCounter = 0; |
| |
| private static int sNextWindowId; |
| |
| private final Context mContext; |
| |
| private final Object mLock = new Object(); |
| |
| private final Pool<PendingEvent> mPendingEventPool = |
| new SimplePool<PendingEvent>(MAX_POOL_SIZE); |
| |
| private final SimpleStringSplitter mStringColonSplitter = |
| new SimpleStringSplitter(COMPONENT_NAME_SEPARATOR); |
| |
| private final List<AccessibilityServiceInfo> mEnabledServicesForFeedbackTempList = |
| new ArrayList<AccessibilityServiceInfo>(); |
| |
| private final Rect mTempRect = new Rect(); |
| |
| private final Point mTempPoint = new Point(); |
| |
| private final Display mDefaultDisplay; |
| |
| private final PackageManager mPackageManager; |
| |
| private final IWindowManager mWindowManagerService; |
| |
| private final SecurityPolicy mSecurityPolicy; |
| |
| private final MainHandler mMainHandler; |
| |
| private Service mQueryBridge; |
| |
| private AlertDialog mEnableTouchExplorationDialog; |
| |
| private AccessibilityInputFilter mInputFilter; |
| |
| private boolean mHasInputFilter; |
| |
| private final Set<ComponentName> mTempComponentNameSet = new HashSet<ComponentName>(); |
| |
| private final List<AccessibilityServiceInfo> mTempAccessibilityServiceInfoList = |
| new ArrayList<AccessibilityServiceInfo>(); |
| |
| private final RemoteCallbackList<IAccessibilityManagerClient> mGlobalClients = |
| new RemoteCallbackList<IAccessibilityManagerClient>(); |
| |
| private final SparseArray<AccessibilityConnectionWrapper> mGlobalInteractionConnections = |
| new SparseArray<AccessibilityConnectionWrapper>(); |
| |
| private final SparseArray<IBinder> mGlobalWindowTokens = new SparseArray<IBinder>(); |
| |
| private final SparseArray<UserState> mUserStates = new SparseArray<UserState>(); |
| |
| private int mCurrentUserId = UserHandle.USER_OWNER; |
| |
| //TODO: Remove this hack |
| private boolean mInitialized; |
| |
| private UserState getCurrentUserStateLocked() { |
| return getUserStateLocked(mCurrentUserId); |
| } |
| |
| private UserState getUserStateLocked(int userId) { |
| UserState state = mUserStates.get(userId); |
| if (state == null) { |
| state = new UserState(userId); |
| mUserStates.put(userId, state); |
| } |
| return state; |
| } |
| |
| /** |
| * Creates a new instance. |
| * |
| * @param context A {@link Context} instance. |
| */ |
| public AccessibilityManagerService(Context context) { |
| mContext = context; |
| mPackageManager = mContext.getPackageManager(); |
| mWindowManagerService = (IWindowManager) ServiceManager.getService(Context.WINDOW_SERVICE); |
| mSecurityPolicy = new SecurityPolicy(); |
| mMainHandler = new MainHandler(mContext.getMainLooper()); |
| //TODO: (multi-display) We need to support multiple displays. |
| DisplayManager displayManager = (DisplayManager) |
| mContext.getSystemService(Context.DISPLAY_SERVICE); |
| mDefaultDisplay = displayManager.getDisplay(Display.DEFAULT_DISPLAY); |
| registerBroadcastReceivers(); |
| new AccessibilityContentObserver(mMainHandler).register( |
| context.getContentResolver()); |
| } |
| |
| private void registerBroadcastReceivers() { |
| PackageMonitor monitor = new PackageMonitor() { |
| @Override |
| public void onSomePackagesChanged() { |
| synchronized (mLock) { |
| if (getChangingUserId() != mCurrentUserId) { |
| return; |
| } |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| // We have to reload the installed services since some services may |
| // have different attributes, resolve info (does not support equals), |
| // etc. Remove them then to force reload. Do it even if automation is |
| // running since when it goes away, we will have to reload as well. |
| userState.mInstalledServices.clear(); |
| if (userState.mUiAutomationService == null) { |
| if (readConfigurationForUserStateLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void onPackageRemoved(String packageName, int uid) { |
| synchronized (mLock) { |
| final int userId = getChangingUserId(); |
| if (userId != mCurrentUserId) { |
| return; |
| } |
| UserState userState = getUserStateLocked(userId); |
| Iterator<ComponentName> it = userState.mEnabledServices.iterator(); |
| while (it.hasNext()) { |
| ComponentName comp = it.next(); |
| String compPkg = comp.getPackageName(); |
| if (compPkg.equals(packageName)) { |
| it.remove(); |
| // Update the enabled services setting. |
| persistComponentNamesToSettingLocked( |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES, |
| userState.mEnabledServices, userId); |
| // Update the touch exploration granted services setting. |
| userState.mTouchExplorationGrantedServices.remove(comp); |
| persistComponentNamesToSettingLocked( |
| Settings.Secure. |
| TOUCH_EXPLORATION_GRANTED_ACCESSIBILITY_SERVICES, |
| userState.mTouchExplorationGrantedServices, userId); |
| // We will update when the automation service dies. |
| if (userState.mUiAutomationService == null) { |
| onUserStateChangedLocked(userState); |
| } |
| return; |
| } |
| } |
| } |
| } |
| |
| @Override |
| public boolean onHandleForceStop(Intent intent, String[] packages, |
| int uid, boolean doit) { |
| synchronized (mLock) { |
| final int userId = getChangingUserId(); |
| if (userId != mCurrentUserId) { |
| return false; |
| } |
| UserState userState = getUserStateLocked(userId); |
| Iterator<ComponentName> it = userState.mEnabledServices.iterator(); |
| while (it.hasNext()) { |
| ComponentName comp = it.next(); |
| String compPkg = comp.getPackageName(); |
| for (String pkg : packages) { |
| if (compPkg.equals(pkg)) { |
| if (!doit) { |
| return true; |
| } |
| it.remove(); |
| persistComponentNamesToSettingLocked( |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES, |
| userState.mEnabledServices, userId); |
| // We will update when the automation service dies. |
| if (userState.mUiAutomationService == null) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } |
| return false; |
| } |
| } |
| }; |
| |
| // package changes |
| monitor.register(mContext, null, UserHandle.ALL, true); |
| |
| // user change and unlock |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_USER_SWITCHED); |
| intentFilter.addAction(Intent.ACTION_USER_REMOVED); |
| intentFilter.addAction(Intent.ACTION_USER_PRESENT); |
| |
| mContext.registerReceiverAsUser(new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (Intent.ACTION_USER_SWITCHED.equals(action)) { |
| switchUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0)); |
| } else if (Intent.ACTION_USER_REMOVED.equals(action)) { |
| removeUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0)); |
| } else if (Intent.ACTION_USER_PRESENT.equals(action)) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readConfigurationForUserStateLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } |
| }, UserHandle.ALL, intentFilter, null, null); |
| } |
| |
| public int addClient(IAccessibilityManagerClient client, int userId) { |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| // If the client is from a process that runs across users such as |
| // the system UI or the system we add it to the global state that |
| // is shared across users. |
| UserState userState = getUserStateLocked(resolvedUserId); |
| if (mSecurityPolicy.isCallerInteractingAcrossUsers(userId)) { |
| mGlobalClients.register(client); |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Added global client for pid:" + Binder.getCallingPid()); |
| } |
| return userState.getClientState(); |
| } else { |
| userState.mClients.register(client); |
| // If this client is not for the current user we do not |
| // return a state since it is not for the foreground user. |
| // We will send the state to the client on a user switch. |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Added user client for pid:" + Binder.getCallingPid() |
| + " and userId:" + mCurrentUserId); |
| } |
| return (resolvedUserId == mCurrentUserId) ? userState.getClientState() : 0; |
| } |
| } |
| } |
| |
| public boolean sendAccessibilityEvent(AccessibilityEvent event, int userId) { |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| // This method does nothing for a background user. |
| if (resolvedUserId != mCurrentUserId) { |
| return true; // yes, recycle the event |
| } |
| if (mSecurityPolicy.canDispatchAccessibilityEvent(event)) { |
| mSecurityPolicy.updateEventSourceLocked(event); |
| mMainHandler.obtainMessage(MainHandler.MSG_UPDATE_ACTIVE_WINDOW, |
| event.getWindowId(), event.getEventType()).sendToTarget(); |
| notifyAccessibilityServicesDelayedLocked(event, false); |
| notifyAccessibilityServicesDelayedLocked(event, true); |
| } |
| if (mHasInputFilter && mInputFilter != null) { |
| mMainHandler.obtainMessage(MainHandler.MSG_SEND_ACCESSIBILITY_EVENT_TO_INPUT_FILTER, |
| AccessibilityEvent.obtain(event)).sendToTarget(); |
| } |
| event.recycle(); |
| getUserStateLocked(resolvedUserId).mHandledFeedbackTypes = 0; |
| } |
| return (OWN_PROCESS_ID != Binder.getCallingPid()); |
| } |
| |
| public List<AccessibilityServiceInfo> getInstalledAccessibilityServiceList(int userId) { |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| // The automation service is a fake one and should not be reported |
| // to clients as being installed - it really is not. |
| UserState userState = getUserStateLocked(resolvedUserId); |
| if (userState.mUiAutomationService != null) { |
| List<AccessibilityServiceInfo> installedServices = |
| new ArrayList<AccessibilityServiceInfo>(); |
| installedServices.addAll(userState.mInstalledServices); |
| installedServices.remove(userState.mUiAutomationService); |
| return installedServices; |
| } |
| return userState.mInstalledServices; |
| } |
| } |
| |
| public List<AccessibilityServiceInfo> getEnabledAccessibilityServiceList(int feedbackType, |
| int userId) { |
| List<AccessibilityServiceInfo> result = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| |
| // The automation service is a fake one and should not be reported |
| // to clients as being enabled. The automation service is always the |
| // only active one, if it exists. |
| UserState userState = getUserStateLocked(resolvedUserId); |
| if (userState.mUiAutomationService != null) { |
| return Collections.emptyList(); |
| } |
| |
| result = mEnabledServicesForFeedbackTempList; |
| result.clear(); |
| List<Service> services = userState.mBoundServices; |
| while (feedbackType != 0) { |
| final int feedbackTypeBit = (1 << Integer.numberOfTrailingZeros(feedbackType)); |
| feedbackType &= ~feedbackTypeBit; |
| final int serviceCount = services.size(); |
| for (int i = 0; i < serviceCount; i++) { |
| Service service = services.get(i); |
| if ((service.mFeedbackType & feedbackTypeBit) != 0) { |
| result.add(service.mAccessibilityServiceInfo); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| public void interrupt(int userId) { |
| CopyOnWriteArrayList<Service> services; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| // This method does nothing for a background user. |
| if (resolvedUserId != mCurrentUserId) { |
| return; |
| } |
| services = getUserStateLocked(resolvedUserId).mBoundServices; |
| } |
| for (int i = 0, count = services.size(); i < count; i++) { |
| Service service = services.get(i); |
| try { |
| service.mServiceInterface.onInterrupt(); |
| } catch (RemoteException re) { |
| Slog.e(LOG_TAG, "Error during sending interrupt request to " |
| + service.mService, re); |
| } |
| } |
| } |
| |
| public int addAccessibilityInteractionConnection(IWindow windowToken, |
| IAccessibilityInteractionConnection connection, int userId) throws RemoteException { |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked(userId); |
| final int windowId = sNextWindowId++; |
| // If the window is from a process that runs across users such as |
| // the system UI or the system we add it to the global state that |
| // is shared across users. |
| if (mSecurityPolicy.isCallerInteractingAcrossUsers(userId)) { |
| AccessibilityConnectionWrapper wrapper = new AccessibilityConnectionWrapper( |
| windowId, connection, UserHandle.USER_ALL); |
| wrapper.linkToDeath(); |
| mGlobalInteractionConnections.put(windowId, wrapper); |
| mGlobalWindowTokens.put(windowId, windowToken.asBinder()); |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Added global connection for pid:" + Binder.getCallingPid() |
| + " with windowId: " + windowId); |
| } |
| } else { |
| AccessibilityConnectionWrapper wrapper = new AccessibilityConnectionWrapper( |
| windowId, connection, resolvedUserId); |
| wrapper.linkToDeath(); |
| UserState userState = getUserStateLocked(resolvedUserId); |
| userState.mInteractionConnections.put(windowId, wrapper); |
| userState.mWindowTokens.put(windowId, windowToken.asBinder()); |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Added user connection for pid:" + Binder.getCallingPid() |
| + " with windowId: " + windowId + " and userId:" + mCurrentUserId); |
| } |
| } |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Adding interaction connection to windowId: " + windowId); |
| } |
| return windowId; |
| } |
| } |
| |
| public void removeAccessibilityInteractionConnection(IWindow window) { |
| synchronized (mLock) { |
| mSecurityPolicy.resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| IBinder token = window.asBinder(); |
| final int removedWindowId = removeAccessibilityInteractionConnectionInternalLocked( |
| token, mGlobalWindowTokens, mGlobalInteractionConnections); |
| if (removedWindowId >= 0) { |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Removed global connection for pid:" + Binder.getCallingPid() |
| + " with windowId: " + removedWindowId); |
| } |
| return; |
| } |
| final int userCount = mUserStates.size(); |
| for (int i = 0; i < userCount; i++) { |
| UserState userState = mUserStates.valueAt(i); |
| final int removedWindowIdForUser = |
| removeAccessibilityInteractionConnectionInternalLocked( |
| token, userState.mWindowTokens, userState.mInteractionConnections); |
| if (removedWindowIdForUser >= 0) { |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Removed user connection for pid:" + Binder.getCallingPid() |
| + " with windowId: " + removedWindowIdForUser + " and userId:" |
| + mUserStates.keyAt(i)); |
| } |
| return; |
| } |
| } |
| } |
| } |
| |
| private int removeAccessibilityInteractionConnectionInternalLocked(IBinder windowToken, |
| SparseArray<IBinder> windowTokens, |
| SparseArray<AccessibilityConnectionWrapper> interactionConnections) { |
| final int count = windowTokens.size(); |
| for (int i = 0; i < count; i++) { |
| if (windowTokens.valueAt(i) == windowToken) { |
| final int windowId = windowTokens.keyAt(i); |
| windowTokens.removeAt(i); |
| AccessibilityConnectionWrapper wrapper = interactionConnections.get(windowId); |
| wrapper.unlinkToDeath(); |
| interactionConnections.remove(windowId); |
| return windowId; |
| } |
| } |
| return -1; |
| } |
| |
| public void registerUiTestAutomationService(IBinder owner, |
| IAccessibilityServiceClient serviceClient, |
| AccessibilityServiceInfo accessibilityServiceInfo) { |
| mSecurityPolicy.enforceCallingPermission(Manifest.permission.RETRIEVE_WINDOW_CONTENT, |
| FUNCTION_REGISTER_UI_TEST_AUTOMATION_SERVICE); |
| |
| accessibilityServiceInfo.setComponentName(sFakeAccessibilityServiceComponentName); |
| |
| synchronized (mLock) { |
| UserState userState = getCurrentUserStateLocked(); |
| |
| if (userState.mUiAutomationService != null) { |
| throw new IllegalStateException("UiAutomationService " + serviceClient |
| + "already registered!"); |
| } |
| |
| try { |
| owner.linkToDeath(userState.mUiAutomationSerivceOnwerDeathRecipient, 0); |
| } catch (RemoteException re) { |
| Slog.e(LOG_TAG, "Couldn't register for the death of a" |
| + " UiTestAutomationService!", re); |
| return; |
| } |
| |
| userState.mUiAutomationServiceOwner = owner; |
| userState.mUiAutomationServiceClient = serviceClient; |
| |
| // Set the temporary state. |
| userState.mIsAccessibilityEnabled = true; |
| userState.mIsTouchExplorationEnabled = false; |
| userState.mIsEnhancedWebAccessibilityEnabled = false; |
| userState.mIsDisplayMagnificationEnabled = false; |
| userState.mInstalledServices.add(accessibilityServiceInfo); |
| userState.mEnabledServices.clear(); |
| userState.mEnabledServices.add(sFakeAccessibilityServiceComponentName); |
| userState.mTouchExplorationGrantedServices.add(sFakeAccessibilityServiceComponentName); |
| |
| // Use the new state instead of settings. |
| onUserStateChangedLocked(userState); |
| } |
| } |
| |
| public void unregisterUiTestAutomationService(IAccessibilityServiceClient serviceClient) { |
| synchronized (mLock) { |
| UserState userState = getCurrentUserStateLocked(); |
| // Automation service is not bound, so pretend it died to perform clean up. |
| if (userState.mUiAutomationService != null |
| && serviceClient != null |
| && userState.mUiAutomationService != null |
| && userState.mUiAutomationService.mServiceInterface != null |
| && userState.mUiAutomationService.mServiceInterface.asBinder() |
| == serviceClient.asBinder()) { |
| userState.mUiAutomationService.binderDied(); |
| } else { |
| throw new IllegalStateException("UiAutomationService " + serviceClient |
| + " not registered!"); |
| } |
| } |
| } |
| |
| public void temporaryEnableAccessibilityStateUntilKeyguardRemoved( |
| ComponentName service, boolean touchExplorationEnabled) { |
| mSecurityPolicy.enforceCallingPermission( |
| Manifest.permission.TEMPORARY_ENABLE_ACCESSIBILITY, |
| TEMPORARY_ENABLE_ACCESSIBILITY_UNTIL_KEYGUARD_REMOVED); |
| try { |
| if (!mWindowManagerService.isKeyguardLocked()) { |
| return; |
| } |
| } catch (RemoteException re) { |
| return; |
| } |
| synchronized (mLock) { |
| // Set the temporary state. |
| UserState userState = getCurrentUserStateLocked(); |
| |
| // This is a nop if UI automation is enabled. |
| if (userState.mUiAutomationService != null) { |
| return; |
| } |
| |
| userState.mIsAccessibilityEnabled = true; |
| userState.mIsTouchExplorationEnabled = touchExplorationEnabled; |
| userState.mIsEnhancedWebAccessibilityEnabled = false; |
| userState.mIsDisplayMagnificationEnabled = false; |
| userState.mEnabledServices.clear(); |
| userState.mEnabledServices.add(service); |
| userState.mBindingServices.clear(); |
| userState.mTouchExplorationGrantedServices.clear(); |
| userState.mTouchExplorationGrantedServices.add(service); |
| |
| // User the current state instead settings. |
| onUserStateChangedLocked(userState); |
| } |
| } |
| |
| boolean onGesture(int gestureId) { |
| synchronized (mLock) { |
| boolean handled = notifyGestureLocked(gestureId, false); |
| if (!handled) { |
| handled = notifyGestureLocked(gestureId, true); |
| } |
| return handled; |
| } |
| } |
| |
| boolean notifyKeyEvent(KeyEvent event, int policyFlags) { |
| synchronized (mLock) { |
| KeyEvent localClone = KeyEvent.obtain(event); |
| boolean handled = notifyKeyEventLocked(localClone, policyFlags, false); |
| if (!handled) { |
| handled = notifyKeyEventLocked(localClone, policyFlags, true); |
| } |
| return handled; |
| } |
| } |
| |
| /** |
| * Gets the bounds of the accessibility focus in the active window. |
| * |
| * @param outBounds The output to which to write the focus bounds. |
| * @return Whether accessibility focus was found and the bounds are populated. |
| */ |
| // TODO: (multi-display) Make sure this works for multiple displays. |
| boolean getAccessibilityFocusBoundsInActiveWindow(Rect outBounds) { |
| // Instead of keeping track of accessibility focus events per |
| // window to be able to find the focus in the active window, |
| // we take a stateless approach and look it up. This is fine |
| // since we do this only when the user clicks/long presses. |
| Service service = getQueryBridge(); |
| final int connectionId = service.mId; |
| AccessibilityInteractionClient client = AccessibilityInteractionClient.getInstance(); |
| client.addConnection(connectionId, service); |
| try { |
| AccessibilityNodeInfo root = AccessibilityInteractionClient.getInstance() |
| .getRootInActiveWindow(connectionId); |
| if (root == null) { |
| return false; |
| } |
| AccessibilityNodeInfo focus = root.findFocus( |
| AccessibilityNodeInfo.FOCUS_ACCESSIBILITY); |
| if (focus == null) { |
| return false; |
| } |
| focus.getBoundsInScreen(outBounds); |
| |
| MagnificationSpec spec = service.getCompatibleMagnificationSpec(focus.getWindowId()); |
| if (spec != null && !spec.isNop()) { |
| outBounds.offset((int) -spec.offsetX, (int) -spec.offsetY); |
| outBounds.scale(1 / spec.scale); |
| } |
| |
| // Clip to the window rectangle. |
| Rect windowBounds = mTempRect; |
| getActiveWindowBounds(windowBounds); |
| outBounds.intersect(windowBounds); |
| // Clip to the screen rectangle. |
| mDefaultDisplay.getRealSize(mTempPoint); |
| outBounds.intersect(0, 0, mTempPoint.x, mTempPoint.y); |
| |
| return true; |
| } finally { |
| client.removeConnection(connectionId); |
| } |
| } |
| |
| /** |
| * Gets the bounds of the active window. |
| * |
| * @param outBounds The output to which to write the bounds. |
| */ |
| boolean getActiveWindowBounds(Rect outBounds) { |
| IBinder token; |
| synchronized (mLock) { |
| final int windowId = mSecurityPolicy.mActiveWindowId; |
| token = mGlobalWindowTokens.get(windowId); |
| if (token == null) { |
| token = getCurrentUserStateLocked().mWindowTokens.get(windowId); |
| } |
| } |
| try { |
| mWindowManagerService.getWindowFrame(token, outBounds); |
| if (!outBounds.isEmpty()) { |
| return true; |
| } |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| return false; |
| } |
| |
| int getActiveWindowId() { |
| return mSecurityPolicy.mActiveWindowId; |
| } |
| |
| void onTouchInteractionStart() { |
| mSecurityPolicy.onTouchInteractionStart(); |
| } |
| |
| void onTouchInteractionEnd() { |
| mSecurityPolicy.onTouchInteractionEnd(); |
| } |
| |
| void onMagnificationStateChanged() { |
| notifyClearAccessibilityNodeInfoCacheLocked(); |
| } |
| |
| private void switchUser(int userId) { |
| synchronized (mLock) { |
| if (mCurrentUserId == userId && mInitialized) { |
| return; |
| } |
| |
| // Disconnect from services for the old user. |
| UserState oldUserState = getUserStateLocked(mCurrentUserId); |
| oldUserState.onSwitchToAnotherUser(); |
| |
| // Disable the local managers for the old user. |
| if (oldUserState.mClients.getRegisteredCallbackCount() > 0) { |
| mMainHandler.obtainMessage(MainHandler.MSG_SEND_CLEARED_STATE_TO_CLIENTS_FOR_USER, |
| oldUserState.mUserId, 0).sendToTarget(); |
| } |
| |
| // Announce user changes only if more that one exist. |
| UserManager userManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| final boolean announceNewUser = userManager.getUsers().size() > 1; |
| |
| // The user changed. |
| mCurrentUserId = userId; |
| |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService != null) { |
| // Switching users disables the UI automation service. |
| userState.mUiAutomationService.binderDied(); |
| } |
| |
| readConfigurationForUserStateLocked(userState); |
| // Even if reading did not yield change, we have to update |
| // the state since the context in which the current user |
| // state was used has changed since it was inactive. |
| onUserStateChangedLocked(userState); |
| |
| if (announceNewUser) { |
| // Schedule announcement of the current user if needed. |
| mMainHandler.sendEmptyMessageDelayed(MainHandler.MSG_ANNOUNCE_NEW_USER_IF_NEEDED, |
| WAIT_FOR_USER_STATE_FULLY_INITIALIZED_MILLIS); |
| } |
| } |
| } |
| |
| private void removeUser(int userId) { |
| synchronized (mLock) { |
| mUserStates.remove(userId); |
| } |
| } |
| |
| private Service getQueryBridge() { |
| if (mQueryBridge == null) { |
| AccessibilityServiceInfo info = new AccessibilityServiceInfo(); |
| info.setCapabilities(AccessibilityServiceInfo.CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT); |
| mQueryBridge = new Service(UserHandle.USER_NULL, |
| sFakeAccessibilityServiceComponentName, info); |
| } |
| return mQueryBridge; |
| } |
| |
| private boolean notifyGestureLocked(int gestureId, boolean isDefault) { |
| // TODO: Now we are giving the gestures to the last enabled |
| // service that can handle them which is the last one |
| // in our list since we write the last enabled as the |
| // last record in the enabled services setting. Ideally, |
| // the user should make the call which service handles |
| // gestures. However, only one service should handle |
| // gestures to avoid user frustration when different |
| // behavior is observed from different combinations of |
| // enabled accessibility services. |
| UserState state = getCurrentUserStateLocked(); |
| for (int i = state.mBoundServices.size() - 1; i >= 0; i--) { |
| Service service = state.mBoundServices.get(i); |
| if (service.mRequestTouchExplorationMode && service.mIsDefault == isDefault) { |
| service.notifyGesture(gestureId); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean notifyKeyEventLocked(KeyEvent event, int policyFlags, boolean isDefault) { |
| // TODO: Now we are giving the key events to the last enabled |
| // service that can handle them Ideally, the user should |
| // make the call which service handles key events. However, |
| // only one service should handle key events to avoid user |
| // frustration when different behavior is observed from |
| // different combinations of enabled accessibility services. |
| UserState state = getCurrentUserStateLocked(); |
| for (int i = state.mBoundServices.size() - 1; i >= 0; i--) { |
| Service service = state.mBoundServices.get(i); |
| // Key events are handled only by services that declared |
| // this capability and requested to filter key events. |
| if (!service.mRequestFilterKeyEvents || |
| (service.mAccessibilityServiceInfo.getCapabilities() & AccessibilityServiceInfo |
| .CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS) == 0) { |
| continue; |
| } |
| if (service.mIsDefault == isDefault) { |
| service.notifyKeyEvent(event, policyFlags); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void notifyClearAccessibilityNodeInfoCacheLocked() { |
| UserState state = getCurrentUserStateLocked(); |
| for (int i = state.mBoundServices.size() - 1; i >= 0; i--) { |
| Service service = state.mBoundServices.get(i); |
| service.notifyClearAccessibilityNodeInfoCache(); |
| } |
| } |
| |
| /** |
| * Removes an AccessibilityInteractionConnection. |
| * |
| * @param windowId The id of the window to which the connection is targeted. |
| * @param userId The id of the user owning the connection. UserHandle.USER_ALL |
| * if global. |
| */ |
| private void removeAccessibilityInteractionConnectionLocked(int windowId, int userId) { |
| if (userId == UserHandle.USER_ALL) { |
| mGlobalWindowTokens.remove(windowId); |
| mGlobalInteractionConnections.remove(windowId); |
| } else { |
| UserState userState = getCurrentUserStateLocked(); |
| userState.mWindowTokens.remove(windowId); |
| userState.mInteractionConnections.remove(windowId); |
| } |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Removing interaction connection to windowId: " + windowId); |
| } |
| } |
| |
| private boolean readInstalledAccessibilityServiceLocked(UserState userState) { |
| mTempAccessibilityServiceInfoList.clear(); |
| |
| List<ResolveInfo> installedServices = mPackageManager.queryIntentServicesAsUser( |
| new Intent(AccessibilityService.SERVICE_INTERFACE), |
| PackageManager.GET_SERVICES | PackageManager.GET_META_DATA, |
| mCurrentUserId); |
| |
| for (int i = 0, count = installedServices.size(); i < count; i++) { |
| ResolveInfo resolveInfo = installedServices.get(i); |
| ServiceInfo serviceInfo = resolveInfo.serviceInfo; |
| if (!android.Manifest.permission.BIND_ACCESSIBILITY_SERVICE.equals( |
| serviceInfo.permission)) { |
| Slog.w(LOG_TAG, "Skipping accessibilty service " + new ComponentName( |
| serviceInfo.packageName, serviceInfo.name).flattenToShortString() |
| + ": it does not require the permission " |
| + android.Manifest.permission.BIND_ACCESSIBILITY_SERVICE); |
| continue; |
| } |
| AccessibilityServiceInfo accessibilityServiceInfo; |
| try { |
| accessibilityServiceInfo = new AccessibilityServiceInfo(resolveInfo, mContext); |
| mTempAccessibilityServiceInfoList.add(accessibilityServiceInfo); |
| } catch (XmlPullParserException xppe) { |
| Slog.e(LOG_TAG, "Error while initializing AccessibilityServiceInfo", xppe); |
| } catch (IOException ioe) { |
| Slog.e(LOG_TAG, "Error while initializing AccessibilityServiceInfo", ioe); |
| } |
| } |
| |
| if (!mTempAccessibilityServiceInfoList.equals(userState.mInstalledServices)) { |
| userState.mInstalledServices.clear(); |
| userState.mInstalledServices.addAll(mTempAccessibilityServiceInfoList); |
| mTempAccessibilityServiceInfoList.clear(); |
| return true; |
| } |
| |
| mTempAccessibilityServiceInfoList.clear(); |
| return false; |
| } |
| |
| private boolean readEnabledAccessibilityServicesLocked(UserState userState) { |
| mTempComponentNameSet.clear(); |
| readComponentNamesFromSettingLocked(Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES, |
| userState.mUserId, mTempComponentNameSet); |
| if (!mTempComponentNameSet.equals(userState.mEnabledServices)) { |
| userState.mEnabledServices.clear(); |
| userState.mEnabledServices.addAll(mTempComponentNameSet); |
| mTempComponentNameSet.clear(); |
| return true; |
| } |
| mTempComponentNameSet.clear(); |
| return false; |
| } |
| |
| private boolean readTouchExplorationGrantedAccessibilityServicesLocked( |
| UserState userState) { |
| mTempComponentNameSet.clear(); |
| readComponentNamesFromSettingLocked( |
| Settings.Secure.TOUCH_EXPLORATION_GRANTED_ACCESSIBILITY_SERVICES, |
| userState.mUserId, mTempComponentNameSet); |
| if (!mTempComponentNameSet.equals(userState.mTouchExplorationGrantedServices)) { |
| userState.mTouchExplorationGrantedServices.clear(); |
| userState.mTouchExplorationGrantedServices.addAll(mTempComponentNameSet); |
| mTempComponentNameSet.clear(); |
| return true; |
| } |
| mTempComponentNameSet.clear(); |
| return false; |
| } |
| |
| /** |
| * Performs {@link AccessibilityService}s delayed notification. The delay is configurable |
| * and denotes the period after the last event before notifying the service. |
| * |
| * @param event The event. |
| * @param isDefault True to notify default listeners, not default services. |
| */ |
| private void notifyAccessibilityServicesDelayedLocked(AccessibilityEvent event, |
| boolean isDefault) { |
| try { |
| UserState state = getCurrentUserStateLocked(); |
| for (int i = 0, count = state.mBoundServices.size(); i < count; i++) { |
| Service service = state.mBoundServices.get(i); |
| |
| if (service.mIsDefault == isDefault) { |
| if (canDispathEventLocked(service, event, state.mHandledFeedbackTypes)) { |
| state.mHandledFeedbackTypes |= service.mFeedbackType; |
| service.notifyAccessibilityEvent(event); |
| } |
| } |
| } |
| } catch (IndexOutOfBoundsException oobe) { |
| // An out of bounds exception can happen if services are going away |
| // as the for loop is running. If that happens, just bail because |
| // there are no more services to notify. |
| return; |
| } |
| } |
| |
| private void addServiceLocked(Service service, UserState userState) { |
| try { |
| service.linkToOwnDeathLocked(); |
| userState.mBoundServices.add(service); |
| userState.mComponentNameToServiceMap.put(service.mComponentName, service); |
| } catch (RemoteException re) { |
| /* do nothing */ |
| } |
| } |
| |
| /** |
| * Removes a service. |
| * |
| * @param service The service. |
| * @return True if the service was removed, false otherwise. |
| */ |
| private void removeServiceLocked(Service service, UserState userState) { |
| userState.mBoundServices.remove(service); |
| userState.mComponentNameToServiceMap.remove(service.mComponentName); |
| service.unlinkToOwnDeathLocked(); |
| } |
| |
| /** |
| * Determines if given event can be dispatched to a service based on the package of the |
| * event source and already notified services for that event type. Specifically, a |
| * service is notified if it is interested in events from the package and no other service |
| * providing the same feedback type has been notified. Exception are services the |
| * provide generic feedback (feedback type left as a safety net for unforeseen feedback |
| * types) which are always notified. |
| * |
| * @param service The potential receiver. |
| * @param event The event. |
| * @param handledFeedbackTypes The feedback types for which services have been notified. |
| * @return True if the listener should be notified, false otherwise. |
| */ |
| private boolean canDispathEventLocked(Service service, AccessibilityEvent event, |
| int handledFeedbackTypes) { |
| |
| if (!service.canReceiveEventsLocked()) { |
| return false; |
| } |
| |
| if (!event.isImportantForAccessibility() |
| && (service.mFetchFlags |
| & AccessibilityNodeInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS) == 0) { |
| return false; |
| } |
| |
| int eventType = event.getEventType(); |
| if ((service.mEventTypes & eventType) != eventType) { |
| return false; |
| } |
| |
| Set<String> packageNames = service.mPackageNames; |
| CharSequence packageName = event.getPackageName(); |
| |
| if (packageNames.isEmpty() || packageNames.contains(packageName)) { |
| int feedbackType = service.mFeedbackType; |
| if ((handledFeedbackTypes & feedbackType) != feedbackType |
| || feedbackType == AccessibilityServiceInfo.FEEDBACK_GENERIC) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| private void unbindAllServicesLocked(UserState userState) { |
| List<Service> services = userState.mBoundServices; |
| for (int i = 0, count = services.size(); i < count; i++) { |
| Service service = services.get(i); |
| if (service.unbindLocked()) { |
| i--; |
| count--; |
| } |
| } |
| } |
| |
| /** |
| * Populates a set with the {@link ComponentName}s stored in a colon |
| * separated value setting for a given user. |
| * |
| * @param settingName The setting to parse. |
| * @param userId The user id. |
| * @param outComponentNames The output component names. |
| */ |
| private void readComponentNamesFromSettingLocked(String settingName, int userId, |
| Set<ComponentName> outComponentNames) { |
| String settingValue = Settings.Secure.getStringForUser(mContext.getContentResolver(), |
| settingName, userId); |
| outComponentNames.clear(); |
| if (settingValue != null) { |
| TextUtils.SimpleStringSplitter splitter = mStringColonSplitter; |
| splitter.setString(settingValue); |
| while (splitter.hasNext()) { |
| String str = splitter.next(); |
| if (str == null || str.length() <= 0) { |
| continue; |
| } |
| ComponentName enabledService = ComponentName.unflattenFromString(str); |
| if (enabledService != null) { |
| outComponentNames.add(enabledService); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Persists the component names in the specified setting in a |
| * colon separated fashion. |
| * |
| * @param settingName The setting name. |
| * @param componentNames The component names. |
| */ |
| private void persistComponentNamesToSettingLocked(String settingName, |
| Set<ComponentName> componentNames, int userId) { |
| StringBuilder builder = new StringBuilder(); |
| for (ComponentName componentName : componentNames) { |
| if (builder.length() > 0) { |
| builder.append(COMPONENT_NAME_SEPARATOR); |
| } |
| builder.append(componentName.flattenToShortString()); |
| } |
| Settings.Secure.putStringForUser(mContext.getContentResolver(), |
| settingName, builder.toString(), userId); |
| } |
| |
| private void manageServicesLocked(UserState userState) { |
| Map<ComponentName, Service> componentNameToServiceMap = |
| userState.mComponentNameToServiceMap; |
| boolean isEnabled = userState.mIsAccessibilityEnabled; |
| |
| for (int i = 0, count = userState.mInstalledServices.size(); i < count; i++) { |
| AccessibilityServiceInfo installedService = userState.mInstalledServices.get(i); |
| ComponentName componentName = ComponentName.unflattenFromString( |
| installedService.getId()); |
| Service service = componentNameToServiceMap.get(componentName); |
| |
| if (isEnabled) { |
| // Wait for the binding if it is in process. |
| if (userState.mBindingServices.contains(componentName)) { |
| continue; |
| } |
| if (userState.mEnabledServices.contains(componentName)) { |
| if (service == null) { |
| service = new Service(userState.mUserId, componentName, installedService); |
| } else if (userState.mBoundServices.contains(service)) { |
| continue; |
| } |
| service.bindLocked(); |
| } else { |
| if (service != null) { |
| service.unbindLocked(); |
| } |
| } |
| } else { |
| if (service != null) { |
| service.unbindLocked(); |
| } else { |
| userState.mBindingServices.remove(componentName); |
| } |
| } |
| } |
| |
| // No enabled installed services => disable accessibility to avoid |
| // sending accessibility events with no recipient across processes. |
| if (isEnabled && userState.mEnabledServices.isEmpty()) { |
| userState.mIsAccessibilityEnabled = false; |
| Settings.Secure.putIntForUser(mContext.getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_ENABLED, 0, userState.mUserId); |
| } |
| } |
| |
| private void scheduleUpdateClientsIfNeededLocked(UserState userState) { |
| final int clientState = userState.getClientState(); |
| if (userState.mLastSentClientState != clientState |
| && (mGlobalClients.getRegisteredCallbackCount() > 0 |
| || userState.mClients.getRegisteredCallbackCount() > 0)) { |
| userState.mLastSentClientState = clientState; |
| mMainHandler.obtainMessage(MainHandler.MSG_SEND_STATE_TO_CLIENTS, |
| clientState, userState.mUserId) .sendToTarget(); |
| } |
| } |
| |
| private void scheduleUpdateInputFilter(UserState userState) { |
| mMainHandler.obtainMessage(MainHandler.MSG_UPDATE_INPUT_FILTER, userState).sendToTarget(); |
| } |
| |
| private void updateInputFilter(UserState userState) { |
| boolean setInputFilter = false; |
| AccessibilityInputFilter inputFilter = null; |
| synchronized (mLock) { |
| int flags = 0; |
| if (userState.mIsDisplayMagnificationEnabled) { |
| flags |= AccessibilityInputFilter.FLAG_FEATURE_SCREEN_MAGNIFIER; |
| } |
| // Touch exploration without accessibility makes no sense. |
| if (userState.mIsAccessibilityEnabled && userState.mIsTouchExplorationEnabled) { |
| flags |= AccessibilityInputFilter.FLAG_FEATURE_TOUCH_EXPLORATION; |
| } |
| if (userState.mIsFilterKeyEventsEnabled) { |
| flags |= AccessibilityInputFilter.FLAG_FEATURE_FILTER_KEY_EVENTS; |
| } |
| if (flags != 0) { |
| if (!mHasInputFilter) { |
| mHasInputFilter = true; |
| if (mInputFilter == null) { |
| mInputFilter = new AccessibilityInputFilter(mContext, |
| AccessibilityManagerService.this); |
| } |
| inputFilter = mInputFilter; |
| setInputFilter = true; |
| } |
| mInputFilter.setEnabledFeatures(flags); |
| } else { |
| if (mHasInputFilter) { |
| mHasInputFilter = false; |
| mInputFilter.disableFeatures(); |
| inputFilter = null; |
| setInputFilter = true; |
| } |
| } |
| } |
| if (setInputFilter) { |
| try { |
| mWindowManagerService.setInputFilter(inputFilter); |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| } |
| } |
| |
| private void showEnableTouchExplorationDialog(final Service service) { |
| synchronized (mLock) { |
| String label = service.mResolveInfo.loadLabel( |
| mContext.getPackageManager()).toString(); |
| |
| final UserState state = getCurrentUserStateLocked(); |
| if (state.mIsTouchExplorationEnabled) { |
| return; |
| } |
| if (mEnableTouchExplorationDialog != null |
| && mEnableTouchExplorationDialog.isShowing()) { |
| return; |
| } |
| mEnableTouchExplorationDialog = new AlertDialog.Builder(mContext) |
| .setIconAttribute(android.R.attr.alertDialogIcon) |
| .setPositiveButton(android.R.string.ok, new OnClickListener() { |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| // The user allowed the service to toggle touch exploration. |
| state.mTouchExplorationGrantedServices.add(service.mComponentName); |
| persistComponentNamesToSettingLocked( |
| Settings.Secure.TOUCH_EXPLORATION_GRANTED_ACCESSIBILITY_SERVICES, |
| state.mTouchExplorationGrantedServices, state.mUserId); |
| // Enable touch exploration. |
| UserState userState = getUserStateLocked(service.mUserId); |
| userState.mIsTouchExplorationEnabled = true; |
| Settings.Secure.putIntForUser(mContext.getContentResolver(), |
| Settings.Secure.TOUCH_EXPLORATION_ENABLED, 1, |
| service.mUserId); |
| onUserStateChangedLocked(userState); |
| } |
| }) |
| .setNegativeButton(android.R.string.cancel, new OnClickListener() { |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| dialog.dismiss(); |
| } |
| }) |
| .setTitle(R.string.enable_explore_by_touch_warning_title) |
| .setMessage(mContext.getString( |
| R.string.enable_explore_by_touch_warning_message, label)) |
| .create(); |
| mEnableTouchExplorationDialog.getWindow().setType( |
| WindowManager.LayoutParams.TYPE_SYSTEM_ALERT); |
| mEnableTouchExplorationDialog.getWindow().getAttributes().privateFlags |
| |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS; |
| mEnableTouchExplorationDialog.setCanceledOnTouchOutside(true); |
| mEnableTouchExplorationDialog.show(); |
| } |
| } |
| |
| private void onUserStateChangedLocked(UserState userState) { |
| // TODO: Remove this hack |
| mInitialized = true; |
| updateLegacyCapabilities(userState); |
| updateServicesLocked(userState); |
| updateFilterKeyEventsLocked(userState); |
| updateTouchExplorationLocked(userState); |
| updateEnhancedWebAccessibilityLocked(userState); |
| scheduleUpdateInputFilter(userState); |
| scheduleUpdateClientsIfNeededLocked(userState); |
| } |
| |
| private void updateLegacyCapabilities(UserState userState) { |
| // Up to JB-MR1 we had a white list with services that can enable touch |
| // exploration. When a service is first started we show a dialog to the |
| // use to get a permission to white list the service. |
| final int installedServiceCount = userState.mInstalledServices.size(); |
| for (int i = 0; i < installedServiceCount; i++) { |
| AccessibilityServiceInfo serviceInfo = userState.mInstalledServices.get(i); |
| ResolveInfo resolveInfo = serviceInfo.getResolveInfo(); |
| if ((serviceInfo.getCapabilities() |
| & AccessibilityServiceInfo.CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION) == 0 |
| && resolveInfo.serviceInfo.applicationInfo.targetSdkVersion |
| <= Build.VERSION_CODES.JELLY_BEAN_MR1) { |
| ComponentName componentName = new ComponentName( |
| resolveInfo.serviceInfo.packageName, resolveInfo.serviceInfo.name); |
| if (userState.mTouchExplorationGrantedServices.contains(componentName)) { |
| serviceInfo.setCapabilities(serviceInfo.getCapabilities() |
| | AccessibilityServiceInfo.CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION); |
| } |
| } |
| } |
| } |
| |
| private void updateFilterKeyEventsLocked(UserState userState) { |
| final int serviceCount = userState.mBoundServices.size(); |
| for (int i = 0; i < serviceCount; i++) { |
| Service service = userState.mBoundServices.get(i); |
| if (service.mRequestFilterKeyEvents |
| && (service.mAccessibilityServiceInfo.getCapabilities() |
| & AccessibilityServiceInfo |
| .CAPABILITY_CAN_REQUEST_FILTER_KEY_EVENTS) != 0) { |
| userState.mIsFilterKeyEventsEnabled = true; |
| return; |
| } |
| } |
| userState.mIsFilterKeyEventsEnabled = false; |
| } |
| |
| private void updateServicesLocked(UserState userState) { |
| if (userState.mIsAccessibilityEnabled) { |
| manageServicesLocked(userState); |
| } else { |
| unbindAllServicesLocked(userState); |
| } |
| } |
| |
| private boolean readConfigurationForUserStateLocked(UserState userState) { |
| boolean somthingChanged = false; |
| somthingChanged |= readAccessibilityEnabledSettingLocked(userState); |
| somthingChanged |= readInstalledAccessibilityServiceLocked(userState); |
| somthingChanged |= readEnabledAccessibilityServicesLocked(userState); |
| somthingChanged |= readTouchExplorationGrantedAccessibilityServicesLocked(userState); |
| somthingChanged |= readTouchExplorationEnabledSettingLocked(userState); |
| somthingChanged |= readEnhancedWebAccessibilityEnabledChangedLocked(userState); |
| somthingChanged |= readDisplayMagnificationEnabledSettingLocked(userState); |
| return somthingChanged; |
| } |
| |
| private boolean readAccessibilityEnabledSettingLocked(UserState userState) { |
| final boolean accessibilityEnabled = Settings.Secure.getIntForUser( |
| mContext.getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_ENABLED, 0, userState.mUserId) == 1; |
| if (accessibilityEnabled != userState.mIsAccessibilityEnabled) { |
| userState.mIsAccessibilityEnabled = accessibilityEnabled; |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean readTouchExplorationEnabledSettingLocked(UserState userState) { |
| final boolean touchExplorationEnabled = Settings.Secure.getIntForUser( |
| mContext.getContentResolver(), |
| Settings.Secure.TOUCH_EXPLORATION_ENABLED, 0, userState.mUserId) == 1; |
| if (touchExplorationEnabled != userState.mIsTouchExplorationEnabled) { |
| userState.mIsTouchExplorationEnabled = touchExplorationEnabled; |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean readDisplayMagnificationEnabledSettingLocked(UserState userState) { |
| final boolean displayMagnificationEnabled = Settings.Secure.getIntForUser( |
| mContext.getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED, |
| 0, userState.mUserId) == 1; |
| if (displayMagnificationEnabled != userState.mIsDisplayMagnificationEnabled) { |
| userState.mIsDisplayMagnificationEnabled = displayMagnificationEnabled; |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean readEnhancedWebAccessibilityEnabledChangedLocked(UserState userState) { |
| final boolean enhancedWeAccessibilityEnabled = Settings.Secure.getIntForUser( |
| mContext.getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, |
| 0, userState.mUserId) == 1; |
| if (enhancedWeAccessibilityEnabled != userState.mIsEnhancedWebAccessibilityEnabled) { |
| userState.mIsEnhancedWebAccessibilityEnabled = enhancedWeAccessibilityEnabled; |
| return true; |
| } |
| return false; |
| } |
| |
| private void updateTouchExplorationLocked(UserState userState) { |
| boolean enabled = false; |
| final int serviceCount = userState.mBoundServices.size(); |
| for (int i = 0; i < serviceCount; i++) { |
| Service service = userState.mBoundServices.get(i); |
| if (canRequestAndRequestsTouchExplorationLocked(service)) { |
| enabled = true; |
| break; |
| } |
| } |
| if (enabled != userState.mIsTouchExplorationEnabled) { |
| userState.mIsTouchExplorationEnabled = enabled; |
| Settings.Secure.putIntForUser(mContext.getContentResolver(), |
| Settings.Secure.TOUCH_EXPLORATION_ENABLED, enabled ? 1 : 0, |
| userState.mUserId); |
| } |
| try { |
| mWindowManagerService.setTouchExplorationEnabled(enabled); |
| } catch (RemoteException e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| private boolean canRequestAndRequestsTouchExplorationLocked(Service service) { |
| // Service not ready or cannot request the feature - well nothing to do. |
| if (!service.canReceiveEventsLocked() || !service.mRequestTouchExplorationMode) { |
| return false; |
| } |
| // UI test automation service can always enable it. |
| if (service.mIsAutomation) { |
| return true; |
| } |
| if (service.mResolveInfo.serviceInfo.applicationInfo.targetSdkVersion |
| <= Build.VERSION_CODES.JELLY_BEAN_MR1) { |
| // Up to JB-MR1 we had a white list with services that can enable touch |
| // exploration. When a service is first started we show a dialog to the |
| // use to get a permission to white list the service. |
| UserState userState = getUserStateLocked(service.mUserId); |
| if (userState.mTouchExplorationGrantedServices.contains(service.mComponentName)) { |
| return true; |
| } else if (mEnableTouchExplorationDialog == null |
| || !mEnableTouchExplorationDialog.isShowing()) { |
| mMainHandler.obtainMessage( |
| MainHandler.MSG_SHOW_ENABLED_TOUCH_EXPLORATION_DIALOG, |
| service).sendToTarget(); |
| } |
| } else { |
| // Starting in JB-MR2 we request an accessibility service to declare |
| // certain capabilities in its meta-data to allow it to enable the |
| // corresponding features. |
| if ((service.mAccessibilityServiceInfo.getCapabilities() |
| & AccessibilityServiceInfo.CAPABILITY_CAN_REQUEST_TOUCH_EXPLORATION) != 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void updateEnhancedWebAccessibilityLocked(UserState userState) { |
| boolean enabled = false; |
| final int serviceCount = userState.mBoundServices.size(); |
| for (int i = 0; i < serviceCount; i++) { |
| Service service = userState.mBoundServices.get(i); |
| if (canRequestAndRequestsEnhancedWebAccessibilityLocked(service)) { |
| enabled = true; |
| break; |
| } |
| } |
| if (enabled != userState.mIsEnhancedWebAccessibilityEnabled) { |
| userState.mIsEnhancedWebAccessibilityEnabled = enabled; |
| Settings.Secure.putIntForUser(mContext.getContentResolver(), |
| Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, enabled ? 1 : 0, |
| userState.mUserId); |
| } |
| } |
| |
| private boolean canRequestAndRequestsEnhancedWebAccessibilityLocked(Service service) { |
| if (!service.canReceiveEventsLocked() || !service.mRequestEnhancedWebAccessibility ) { |
| return false; |
| } |
| if (service.mIsAutomation || (service.mAccessibilityServiceInfo.getCapabilities() |
| & AccessibilityServiceInfo.CAPABILITY_CAN_REQUEST_ENHANCED_WEB_ACCESSIBILITY) != 0) { |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, final PrintWriter pw, String[] args) { |
| mSecurityPolicy.enforceCallingPermission(Manifest.permission.DUMP, FUNCTION_DUMP); |
| synchronized (mLock) { |
| pw.println("ACCESSIBILITY MANAGER (dumpsys accessibility)"); |
| pw.println(); |
| final int userCount = mUserStates.size(); |
| for (int i = 0; i < userCount; i++) { |
| UserState userState = mUserStates.valueAt(i); |
| pw.append("User state[attributes:{id=" + userState.mUserId); |
| pw.append(", currentUser=" + (userState.mUserId == mCurrentUserId)); |
| pw.append(", accessibilityEnabled=" + userState.mIsAccessibilityEnabled); |
| pw.append(", touchExplorationEnabled=" + userState.mIsTouchExplorationEnabled); |
| pw.append(", displayMagnificationEnabled=" |
| + userState.mIsDisplayMagnificationEnabled); |
| if (userState.mUiAutomationService != null) { |
| pw.append(", "); |
| userState.mUiAutomationService.dump(fd, pw, args); |
| pw.println(); |
| } |
| pw.append("}"); |
| pw.println(); |
| pw.append(" services:{"); |
| final int serviceCount = userState.mBoundServices.size(); |
| for (int j = 0; j < serviceCount; j++) { |
| if (j > 0) { |
| pw.append(", "); |
| pw.println(); |
| pw.append(" "); |
| } |
| Service service = userState.mBoundServices.get(j); |
| service.dump(fd, pw, args); |
| } |
| pw.println("}]"); |
| pw.println(); |
| } |
| } |
| } |
| |
| private class AccessibilityConnectionWrapper implements DeathRecipient { |
| private final int mWindowId; |
| private final int mUserId; |
| private final IAccessibilityInteractionConnection mConnection; |
| |
| public AccessibilityConnectionWrapper(int windowId, |
| IAccessibilityInteractionConnection connection, int userId) { |
| mWindowId = windowId; |
| mUserId = userId; |
| mConnection = connection; |
| } |
| |
| public void linkToDeath() throws RemoteException { |
| mConnection.asBinder().linkToDeath(this, 0); |
| } |
| |
| public void unlinkToDeath() { |
| mConnection.asBinder().unlinkToDeath(this, 0); |
| } |
| |
| @Override |
| public void binderDied() { |
| unlinkToDeath(); |
| synchronized (mLock) { |
| removeAccessibilityInteractionConnectionLocked(mWindowId, mUserId); |
| } |
| } |
| } |
| |
| private final class MainHandler extends Handler { |
| public static final int MSG_SEND_ACCESSIBILITY_EVENT_TO_INPUT_FILTER = 1; |
| public static final int MSG_SEND_STATE_TO_CLIENTS = 2; |
| public static final int MSG_SEND_CLEARED_STATE_TO_CLIENTS_FOR_USER = 3; |
| public static final int MSG_UPDATE_ACTIVE_WINDOW = 4; |
| public static final int MSG_ANNOUNCE_NEW_USER_IF_NEEDED = 5; |
| public static final int MSG_UPDATE_INPUT_FILTER = 6; |
| public static final int MSG_SHOW_ENABLED_TOUCH_EXPLORATION_DIALOG = 7; |
| public static final int MSG_SEND_KEY_EVENT_TO_INPUT_FILTER = 8; |
| |
| public MainHandler(Looper looper) { |
| super(looper); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| final int type = msg.what; |
| switch (type) { |
| case MSG_SEND_ACCESSIBILITY_EVENT_TO_INPUT_FILTER: { |
| AccessibilityEvent event = (AccessibilityEvent) msg.obj; |
| synchronized (mLock) { |
| if (mHasInputFilter && mInputFilter != null) { |
| mInputFilter.notifyAccessibilityEvent(event); |
| } |
| } |
| event.recycle(); |
| } break; |
| case MSG_SEND_KEY_EVENT_TO_INPUT_FILTER: { |
| KeyEvent event = (KeyEvent) msg.obj; |
| final int policyFlags = msg.arg1; |
| synchronized (mLock) { |
| if (mHasInputFilter && mInputFilter != null) { |
| mInputFilter.sendInputEvent(event, policyFlags); |
| } |
| } |
| event.recycle(); |
| } break; |
| case MSG_SEND_STATE_TO_CLIENTS: { |
| final int clientState = msg.arg1; |
| final int userId = msg.arg2; |
| sendStateToClients(clientState, mGlobalClients); |
| sendStateToClientsForUser(clientState, userId); |
| } break; |
| case MSG_SEND_CLEARED_STATE_TO_CLIENTS_FOR_USER: { |
| final int userId = msg.arg1; |
| sendStateToClientsForUser(0, userId); |
| } break; |
| case MSG_UPDATE_ACTIVE_WINDOW: { |
| final int windowId = msg.arg1; |
| final int eventType = msg.arg2; |
| mSecurityPolicy.updateActiveWindow(windowId, eventType); |
| } break; |
| case MSG_ANNOUNCE_NEW_USER_IF_NEEDED: { |
| announceNewUserIfNeeded(); |
| } break; |
| case MSG_UPDATE_INPUT_FILTER: { |
| UserState userState = (UserState) msg.obj; |
| updateInputFilter(userState); |
| } break; |
| case MSG_SHOW_ENABLED_TOUCH_EXPLORATION_DIALOG: { |
| Service service = (Service) msg.obj; |
| showEnableTouchExplorationDialog(service); |
| } break; |
| } |
| } |
| |
| private void announceNewUserIfNeeded() { |
| synchronized (mLock) { |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mIsAccessibilityEnabled) { |
| UserManager userManager = (UserManager) mContext.getSystemService( |
| Context.USER_SERVICE); |
| String message = mContext.getString(R.string.user_switched, |
| userManager.getUserInfo(mCurrentUserId).name); |
| AccessibilityEvent event = AccessibilityEvent.obtain( |
| AccessibilityEvent.TYPE_ANNOUNCEMENT); |
| event.getText().add(message); |
| event.setWindowId(mSecurityPolicy.getRetrievalAllowingWindowLocked()); |
| sendAccessibilityEvent(event, mCurrentUserId); |
| } |
| } |
| } |
| |
| private void sendStateToClientsForUser(int clientState, int userId) { |
| final UserState userState; |
| synchronized (mLock) { |
| userState = getUserStateLocked(userId); |
| } |
| sendStateToClients(clientState, userState.mClients); |
| } |
| |
| private void sendStateToClients(int clientState, |
| RemoteCallbackList<IAccessibilityManagerClient> clients) { |
| try { |
| final int userClientCount = clients.beginBroadcast(); |
| for (int i = 0; i < userClientCount; i++) { |
| IAccessibilityManagerClient client = clients.getBroadcastItem(i); |
| try { |
| client.setState(clientState); |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| } |
| } finally { |
| clients.finishBroadcast(); |
| } |
| } |
| } |
| |
| private PendingEvent obtainPendingEventLocked(KeyEvent event, int policyFlags, int sequence) { |
| PendingEvent pendingEvent = mPendingEventPool.acquire(); |
| if (pendingEvent == null) { |
| pendingEvent = new PendingEvent(); |
| } |
| pendingEvent.event = event; |
| pendingEvent.policyFlags = policyFlags; |
| pendingEvent.sequence = sequence; |
| return pendingEvent; |
| } |
| |
| private void recyclePendingEventLocked(PendingEvent pendingEvent) { |
| pendingEvent.clear(); |
| mPendingEventPool.release(pendingEvent); |
| } |
| |
| /** |
| * This class represents an accessibility service. It stores all per service |
| * data required for the service management, provides API for starting/stopping the |
| * service and is responsible for adding/removing the service in the data structures |
| * for service management. The class also exposes configuration interface that is |
| * passed to the service it represents as soon it is bound. It also serves as the |
| * connection for the service. |
| */ |
| class Service extends IAccessibilityServiceConnection.Stub |
| implements ServiceConnection, DeathRecipient {; |
| |
| final int mUserId; |
| |
| int mId = 0; |
| |
| AccessibilityServiceInfo mAccessibilityServiceInfo; |
| |
| IBinder mService; |
| |
| IAccessibilityServiceClient mServiceInterface; |
| |
| int mEventTypes; |
| |
| int mFeedbackType; |
| |
| Set<String> mPackageNames = new HashSet<String>(); |
| |
| boolean mIsDefault; |
| |
| boolean mRequestTouchExplorationMode; |
| |
| boolean mRequestEnhancedWebAccessibility; |
| |
| boolean mRequestFilterKeyEvents; |
| |
| int mFetchFlags; |
| |
| long mNotificationTimeout; |
| |
| ComponentName mComponentName; |
| |
| Intent mIntent; |
| |
| boolean mIsAutomation; |
| |
| final Rect mTempBounds = new Rect(); |
| |
| final ResolveInfo mResolveInfo; |
| |
| // the events pending events to be dispatched to this service |
| final SparseArray<AccessibilityEvent> mPendingEvents = |
| new SparseArray<AccessibilityEvent>(); |
| |
| final KeyEventDispatcher mKeyEventDispatcher = new KeyEventDispatcher(); |
| |
| boolean mWasConnectedAndDied; |
| |
| // Handler only for dispatching accessibility events since we use event |
| // types as message types allowing us to remove messages per event type. |
| public Handler mEventDispatchHandler = new Handler(mMainHandler.getLooper()) { |
| @Override |
| public void handleMessage(Message message) { |
| final int eventType = message.what; |
| notifyAccessibilityEventInternal(eventType); |
| } |
| }; |
| |
| // Handler for scheduling method invocations on the main thread. |
| public InvocationHandler mInvocationHandler = new InvocationHandler( |
| mMainHandler.getLooper()); |
| |
| public Service(int userId, ComponentName componentName, |
| AccessibilityServiceInfo accessibilityServiceInfo) { |
| mUserId = userId; |
| mResolveInfo = accessibilityServiceInfo.getResolveInfo(); |
| mId = sIdCounter++; |
| mComponentName = componentName; |
| mAccessibilityServiceInfo = accessibilityServiceInfo; |
| mIsAutomation = (sFakeAccessibilityServiceComponentName.equals(componentName)); |
| if (!mIsAutomation) { |
| mIntent = new Intent().setComponent(mComponentName); |
| mIntent.putExtra(Intent.EXTRA_CLIENT_LABEL, |
| com.android.internal.R.string.accessibility_binding_label); |
| mIntent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivity( |
| mContext, 0, new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS), 0)); |
| } |
| setDynamicallyConfigurableProperties(accessibilityServiceInfo); |
| } |
| |
| public void setDynamicallyConfigurableProperties(AccessibilityServiceInfo info) { |
| mEventTypes = info.eventTypes; |
| mFeedbackType = info.feedbackType; |
| String[] packageNames = info.packageNames; |
| if (packageNames != null) { |
| mPackageNames.addAll(Arrays.asList(packageNames)); |
| } |
| mNotificationTimeout = info.notificationTimeout; |
| mIsDefault = (info.flags & DEFAULT) != 0; |
| |
| if (mIsAutomation || info.getResolveInfo().serviceInfo.applicationInfo.targetSdkVersion |
| >= Build.VERSION_CODES.JELLY_BEAN) { |
| if ((info.flags & AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS) != 0) { |
| mFetchFlags |= AccessibilityNodeInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS; |
| } else { |
| mFetchFlags &= ~AccessibilityNodeInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS; |
| } |
| } |
| |
| if ((info.flags & AccessibilityServiceInfo.FLAG_REPORT_VIEW_IDS) != 0) { |
| mFetchFlags |= AccessibilityNodeInfo.FLAG_REPORT_VIEW_IDS; |
| } else { |
| mFetchFlags &= ~AccessibilityNodeInfo.FLAG_REPORT_VIEW_IDS; |
| } |
| |
| mRequestTouchExplorationMode = (info.flags |
| & AccessibilityServiceInfo.FLAG_REQUEST_TOUCH_EXPLORATION_MODE) != 0; |
| mRequestEnhancedWebAccessibility = (info.flags |
| & AccessibilityServiceInfo.FLAG_REQUEST_ENHANCED_WEB_ACCESSIBILITY) != 0; |
| mRequestFilterKeyEvents = (info.flags |
| & AccessibilityServiceInfo.FLAG_REQUEST_FILTER_KEY_EVENTS) != 0; |
| } |
| |
| /** |
| * Binds to the accessibility service. |
| * |
| * @return True if binding is successful. |
| */ |
| public boolean bindLocked() { |
| UserState userState = getUserStateLocked(mUserId); |
| if (!mIsAutomation) { |
| if (mService == null && mContext.bindServiceAsUser( |
| mIntent, this, Context.BIND_AUTO_CREATE, new UserHandle(mUserId))) { |
| userState.mBindingServices.add(mComponentName); |
| } |
| } else { |
| userState.mBindingServices.add(mComponentName); |
| mService = userState.mUiAutomationServiceClient.asBinder(); |
| onServiceConnected(mComponentName, mService); |
| userState.mUiAutomationService = this; |
| } |
| return false; |
| } |
| |
| /** |
| * Unbinds form the accessibility service and removes it from the data |
| * structures for service management. |
| * |
| * @return True if unbinding is successful. |
| */ |
| public boolean unbindLocked() { |
| if (mService == null) { |
| return false; |
| } |
| UserState userState = getUserStateLocked(mUserId); |
| mKeyEventDispatcher.flush(); |
| if (!mIsAutomation) { |
| mContext.unbindService(this); |
| } else { |
| userState.destroyUiAutomationService(); |
| } |
| removeServiceLocked(this, userState); |
| resetLocked(); |
| return true; |
| } |
| |
| public boolean canReceiveEventsLocked() { |
| return (mEventTypes != 0 && mFeedbackType != 0 && mService != null); |
| } |
| |
| @Override |
| public void setOnKeyEventResult(boolean handled, int sequence) { |
| mKeyEventDispatcher.setOnKeyEventResult(handled, sequence); |
| } |
| |
| @Override |
| public AccessibilityServiceInfo getServiceInfo() { |
| synchronized (mLock) { |
| return mAccessibilityServiceInfo; |
| } |
| } |
| |
| @Override |
| public void setServiceInfo(AccessibilityServiceInfo info) { |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mLock) { |
| // If the XML manifest had data to configure the service its info |
| // should be already set. In such a case update only the dynamically |
| // configurable properties. |
| AccessibilityServiceInfo oldInfo = mAccessibilityServiceInfo; |
| if (oldInfo != null) { |
| oldInfo.updateDynamicallyConfigurableProperties(info); |
| setDynamicallyConfigurableProperties(oldInfo); |
| } else { |
| setDynamicallyConfigurableProperties(info); |
| } |
| UserState userState = getUserStateLocked(mUserId); |
| onUserStateChangedLocked(userState); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName componentName, IBinder service) { |
| synchronized (mLock) { |
| mService = service; |
| mServiceInterface = IAccessibilityServiceClient.Stub.asInterface(service); |
| UserState userState = getUserStateLocked(mUserId); |
| addServiceLocked(this, userState); |
| if (userState.mBindingServices.contains(mComponentName) || mWasConnectedAndDied) { |
| userState.mBindingServices.remove(mComponentName); |
| mWasConnectedAndDied = false; |
| try { |
| mServiceInterface.setConnection(this, mId); |
| onUserStateChangedLocked(userState); |
| } catch (RemoteException re) { |
| Slog.w(LOG_TAG, "Error while setting connection for service: " |
| + service, re); |
| binderDied(); |
| } |
| } else { |
| binderDied(); |
| } |
| } |
| } |
| |
| @Override |
| public boolean findAccessibilityNodeInfosByViewId(int accessibilityWindowId, |
| long accessibilityNodeId, String viewIdResName, int interactionId, |
| IAccessibilityInteractionConnectionCallback callback, long interrogatingTid) |
| throws RemoteException { |
| final int resolvedWindowId; |
| IAccessibilityInteractionConnection connection = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| mSecurityPolicy.enforceCanRetrieveWindowContent(this); |
| final boolean permissionGranted = mSecurityPolicy.canRetrieveWindowContent(this); |
| if (!permissionGranted) { |
| return false; |
| } else { |
| resolvedWindowId = resolveAccessibilityWindowIdLocked(accessibilityWindowId); |
| connection = getConnectionLocked(resolvedWindowId); |
| if (connection == null) { |
| return false; |
| } |
| } |
| } |
| final int interrogatingPid = Binder.getCallingPid(); |
| final long identityToken = Binder.clearCallingIdentity(); |
| MagnificationSpec spec = getCompatibleMagnificationSpec(resolvedWindowId); |
| try { |
| connection.findAccessibilityNodeInfosByViewId(accessibilityNodeId, |
| viewIdResName, interactionId, callback, mFetchFlags, interrogatingPid, |
| interrogatingTid, spec); |
| return true; |
| } catch (RemoteException re) { |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "Error findAccessibilityNodeInfoByViewId()."); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identityToken); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean findAccessibilityNodeInfosByText(int accessibilityWindowId, |
| long accessibilityNodeId, String text, int interactionId, |
| IAccessibilityInteractionConnectionCallback callback, long interrogatingTid) |
| throws RemoteException { |
| final int resolvedWindowId; |
| IAccessibilityInteractionConnection connection = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| mSecurityPolicy.enforceCanRetrieveWindowContent(this); |
| resolvedWindowId = resolveAccessibilityWindowIdLocked(accessibilityWindowId); |
| final boolean permissionGranted = |
| mSecurityPolicy.canGetAccessibilityNodeInfoLocked(this, resolvedWindowId); |
| if (!permissionGranted) { |
| return false; |
| } else { |
| connection = getConnectionLocked(resolvedWindowId); |
| if (connection == null) { |
| return false; |
| } |
| } |
| } |
| final int interrogatingPid = Binder.getCallingPid(); |
| final long identityToken = Binder.clearCallingIdentity(); |
| MagnificationSpec spec = getCompatibleMagnificationSpec(resolvedWindowId); |
| try { |
| connection.findAccessibilityNodeInfosByText(accessibilityNodeId, text, |
| interactionId, callback, mFetchFlags, interrogatingPid, interrogatingTid, |
| spec); |
| return true; |
| } catch (RemoteException re) { |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "Error calling findAccessibilityNodeInfosByText()"); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identityToken); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean findAccessibilityNodeInfoByAccessibilityId( |
| int accessibilityWindowId, long accessibilityNodeId, int interactionId, |
| IAccessibilityInteractionConnectionCallback callback, int flags, |
| long interrogatingTid) throws RemoteException { |
| final int resolvedWindowId; |
| IAccessibilityInteractionConnection connection = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| mSecurityPolicy.enforceCanRetrieveWindowContent(this); |
| resolvedWindowId = resolveAccessibilityWindowIdLocked(accessibilityWindowId); |
| final boolean permissionGranted = |
| mSecurityPolicy.canGetAccessibilityNodeInfoLocked(this, resolvedWindowId); |
| if (!permissionGranted) { |
| return false; |
| } else { |
| connection = getConnectionLocked(resolvedWindowId); |
| if (connection == null) { |
| return false; |
| } |
| } |
| } |
| final int interrogatingPid = Binder.getCallingPid(); |
| final long identityToken = Binder.clearCallingIdentity(); |
| MagnificationSpec spec = getCompatibleMagnificationSpec(resolvedWindowId); |
| try { |
| connection.findAccessibilityNodeInfoByAccessibilityId(accessibilityNodeId, |
| interactionId, callback, mFetchFlags | flags, interrogatingPid, |
| interrogatingTid, spec); |
| return true; |
| } catch (RemoteException re) { |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "Error calling findAccessibilityNodeInfoByAccessibilityId()"); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identityToken); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean findFocus(int accessibilityWindowId, long accessibilityNodeId, |
| int focusType, int interactionId, |
| IAccessibilityInteractionConnectionCallback callback, long interrogatingTid) |
| throws RemoteException { |
| final int resolvedWindowId; |
| IAccessibilityInteractionConnection connection = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| mSecurityPolicy.enforceCanRetrieveWindowContent(this); |
| resolvedWindowId = resolveAccessibilityWindowIdLocked(accessibilityWindowId); |
| final boolean permissionGranted = |
| mSecurityPolicy.canGetAccessibilityNodeInfoLocked(this, resolvedWindowId); |
| if (!permissionGranted) { |
| return false; |
| } else { |
| connection = getConnectionLocked(resolvedWindowId); |
| if (connection == null) { |
| return false; |
| } |
| } |
| } |
| final int interrogatingPid = Binder.getCallingPid(); |
| final long identityToken = Binder.clearCallingIdentity(); |
| MagnificationSpec spec = getCompatibleMagnificationSpec(resolvedWindowId); |
| try { |
| connection.findFocus(accessibilityNodeId, focusType, interactionId, callback, |
| mFetchFlags, interrogatingPid, interrogatingTid, spec); |
| return true; |
| } catch (RemoteException re) { |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "Error calling findAccessibilityFocus()"); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identityToken); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean focusSearch(int accessibilityWindowId, long accessibilityNodeId, |
| int direction, int interactionId, |
| IAccessibilityInteractionConnectionCallback callback, long interrogatingTid) |
| throws RemoteException { |
| final int resolvedWindowId; |
| IAccessibilityInteractionConnection connection = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| mSecurityPolicy.enforceCanRetrieveWindowContent(this); |
| resolvedWindowId = resolveAccessibilityWindowIdLocked(accessibilityWindowId); |
| final boolean permissionGranted = |
| mSecurityPolicy.canGetAccessibilityNodeInfoLocked(this, resolvedWindowId); |
| if (!permissionGranted) { |
| return false; |
| } else { |
| connection = getConnectionLocked(resolvedWindowId); |
| if (connection == null) { |
| return false; |
| } |
| } |
| } |
| final int interrogatingPid = Binder.getCallingPid(); |
| final long identityToken = Binder.clearCallingIdentity(); |
| MagnificationSpec spec = getCompatibleMagnificationSpec(resolvedWindowId); |
| try { |
| connection.focusSearch(accessibilityNodeId, direction, interactionId, callback, |
| mFetchFlags, interrogatingPid, interrogatingTid, spec); |
| return true; |
| } catch (RemoteException re) { |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "Error calling accessibilityFocusSearch()"); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identityToken); |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean performAccessibilityAction(int accessibilityWindowId, |
| long accessibilityNodeId, int action, Bundle arguments, int interactionId, |
| IAccessibilityInteractionConnectionCallback callback, long interrogatingTid) |
| throws RemoteException { |
| final int resolvedWindowId; |
| IAccessibilityInteractionConnection connection = null; |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| mSecurityPolicy.enforceCanRetrieveWindowContent(this); |
| resolvedWindowId = resolveAccessibilityWindowIdLocked(accessibilityWindowId); |
| final boolean permissionGranted = mSecurityPolicy.canPerformActionLocked(this, |
| resolvedWindowId, action, arguments); |
| if (!permissionGranted) { |
| return false; |
| } else { |
| connection = getConnectionLocked(resolvedWindowId); |
| if (connection == null) { |
| return false; |
| } |
| } |
| } |
| final int interrogatingPid = Binder.getCallingPid(); |
| final long identityToken = Binder.clearCallingIdentity(); |
| try { |
| connection.performAccessibilityAction(accessibilityNodeId, action, arguments, |
| interactionId, callback, mFetchFlags, interrogatingPid, interrogatingTid); |
| } catch (RemoteException re) { |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "Error calling performAccessibilityAction()"); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(identityToken); |
| } |
| return true; |
| } |
| |
| public boolean performGlobalAction(int action) { |
| synchronized (mLock) { |
| final int resolvedUserId = mSecurityPolicy |
| .resolveCallingUserIdEnforcingPermissionsLocked( |
| UserHandle.getCallingUserId()); |
| if (resolvedUserId != mCurrentUserId) { |
| return false; |
| } |
| } |
| final long identity = Binder.clearCallingIdentity(); |
| try { |
| switch (action) { |
| case AccessibilityService.GLOBAL_ACTION_BACK: { |
| sendDownAndUpKeyEvents(KeyEvent.KEYCODE_BACK); |
| } return true; |
| case AccessibilityService.GLOBAL_ACTION_HOME: { |
| sendDownAndUpKeyEvents(KeyEvent.KEYCODE_HOME); |
| } return true; |
| case AccessibilityService.GLOBAL_ACTION_RECENTS: { |
| openRecents(); |
| } return true; |
| case AccessibilityService.GLOBAL_ACTION_NOTIFICATIONS: { |
| expandNotifications(); |
| } return true; |
| case AccessibilityService.GLOBAL_ACTION_QUICK_SETTINGS: { |
| expandQuickSettings(); |
| } return true; |
| } |
| return false; |
| } finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, final PrintWriter pw, String[] args) { |
| mSecurityPolicy.enforceCallingPermission(Manifest.permission.DUMP, FUNCTION_DUMP); |
| synchronized (mLock) { |
| pw.append("Service[label=" + mAccessibilityServiceInfo.getResolveInfo() |
| .loadLabel(mContext.getPackageManager())); |
| pw.append(", feedbackType" |
| + AccessibilityServiceInfo.feedbackTypeToString(mFeedbackType)); |
| pw.append(", capabilities=" + mAccessibilityServiceInfo.getCapabilities()); |
| pw.append(", eventTypes=" |
| + AccessibilityEvent.eventTypeToString(mEventTypes)); |
| pw.append(", notificationTimeout=" + mNotificationTimeout); |
| pw.append("]"); |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName componentName) { |
| /* do nothing - #binderDied takes care */ |
| } |
| |
| public void linkToOwnDeathLocked() throws RemoteException { |
| mService.linkToDeath(this, 0); |
| } |
| |
| public void unlinkToOwnDeathLocked() { |
| mService.unlinkToDeath(this, 0); |
| } |
| |
| public void resetLocked() { |
| try { |
| // Clear the proxy in the other process so this |
| // IAccessibilityServiceConnection can be garbage collected. |
| mServiceInterface.setConnection(null, mId); |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| mService = null; |
| mServiceInterface = null; |
| } |
| |
| public boolean isConnectedLocked() { |
| return (mService != null); |
| } |
| |
| public void binderDied() { |
| synchronized (mLock) { |
| // It is possible that this service's package was force stopped during |
| // whose handling the death recipient is unlinked and still get a call |
| // on binderDied since the call was made before we unlink but was |
| // waiting on the lock we held during the force stop handling. |
| if (!isConnectedLocked()) { |
| return; |
| } |
| mWasConnectedAndDied = true; |
| mKeyEventDispatcher.flush(); |
| UserState userState = getUserStateLocked(mUserId); |
| // The death recipient is unregistered in removeServiceLocked |
| removeServiceLocked(this, userState); |
| resetLocked(); |
| if (mIsAutomation) { |
| // We no longer have an automation service, so restore |
| // the state based on values in the settings database. |
| userState.mInstalledServices.remove(mAccessibilityServiceInfo); |
| userState.mEnabledServices.remove(mComponentName); |
| userState.destroyUiAutomationService(); |
| } |
| } |
| } |
| |
| /** |
| * Performs a notification for an {@link AccessibilityEvent}. |
| * |
| * @param event The event. |
| */ |
| public void notifyAccessibilityEvent(AccessibilityEvent event) { |
| synchronized (mLock) { |
| final int eventType = event.getEventType(); |
| // Make a copy since during dispatch it is possible the event to |
| // be modified to remove its source if the receiving service does |
| // not have permission to access the window content. |
| AccessibilityEvent newEvent = AccessibilityEvent.obtain(event); |
| AccessibilityEvent oldEvent = mPendingEvents.get(eventType); |
| mPendingEvents.put(eventType, newEvent); |
| |
| final int what = eventType; |
| if (oldEvent != null) { |
| mEventDispatchHandler.removeMessages(what); |
| oldEvent.recycle(); |
| } |
| |
| Message message = mEventDispatchHandler.obtainMessage(what); |
| mEventDispatchHandler.sendMessageDelayed(message, mNotificationTimeout); |
| } |
| } |
| |
| /** |
| * Notifies an accessibility service client for a scheduled event given the event type. |
| * |
| * @param eventType The type of the event to dispatch. |
| */ |
| private void notifyAccessibilityEventInternal(int eventType) { |
| IAccessibilityServiceClient listener; |
| AccessibilityEvent event; |
| |
| synchronized (mLock) { |
| listener = mServiceInterface; |
| |
| // If the service died/was disabled while the message for dispatching |
| // the accessibility event was propagating the listener may be null. |
| if (listener == null) { |
| return; |
| } |
| |
| event = mPendingEvents.get(eventType); |
| |
| // Check for null here because there is a concurrent scenario in which this |
| // happens: 1) A binder thread calls notifyAccessibilityServiceDelayedLocked |
| // which posts a message for dispatching an event. 2) The message is pulled |
| // from the queue by the handler on the service thread and the latter is |
| // just about to acquire the lock and call this method. 3) Now another binder |
| // thread acquires the lock calling notifyAccessibilityServiceDelayedLocked |
| // so the service thread waits for the lock; 4) The binder thread replaces |
| // the event with a more recent one (assume the same event type) and posts a |
| // dispatch request releasing the lock. 5) Now the main thread is unblocked and |
| // dispatches the event which is removed from the pending ones. 6) And ... now |
| // the service thread handles the last message posted by the last binder call |
| // but the event is already dispatched and hence looking it up in the pending |
| // ones yields null. This check is much simpler that keeping count for each |
| // event type of each service to catch such a scenario since only one message |
| // is processed at a time. |
| if (event == null) { |
| return; |
| } |
| |
| mPendingEvents.remove(eventType); |
| if (mSecurityPolicy.canRetrieveWindowContent(this)) { |
| event.setConnectionId(mId); |
| } else { |
| event.setSource(null); |
| } |
| event.setSealed(true); |
| } |
| |
| try { |
| listener.onAccessibilityEvent(event); |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Event " + event + " sent to " + listener); |
| } |
| } catch (RemoteException re) { |
| Slog.e(LOG_TAG, "Error during sending " + event + " to " + listener, re); |
| } finally { |
| event.recycle(); |
| } |
| } |
| |
| public void notifyGesture(int gestureId) { |
| mInvocationHandler.obtainMessage(InvocationHandler.MSG_ON_GESTURE, |
| gestureId, 0).sendToTarget(); |
| } |
| |
| public void notifyKeyEvent(KeyEvent event, int policyFlags) { |
| mInvocationHandler.obtainMessage(InvocationHandler.MSG_ON_KEY_EVENT, |
| policyFlags, 0, event).sendToTarget(); |
| } |
| |
| public void notifyClearAccessibilityNodeInfoCache() { |
| mInvocationHandler.sendEmptyMessage( |
| InvocationHandler.MSG_CLEAR_ACCESSIBILITY_NODE_INFO_CACHE); |
| } |
| |
| private void notifyGestureInternal(int gestureId) { |
| IAccessibilityServiceClient listener = mServiceInterface; |
| if (listener != null) { |
| try { |
| listener.onGesture(gestureId); |
| } catch (RemoteException re) { |
| Slog.e(LOG_TAG, "Error during sending gesture " + gestureId |
| + " to " + mService, re); |
| } |
| } |
| } |
| |
| private void notifyKeyEventInternal(KeyEvent event, int policyFlags) { |
| mKeyEventDispatcher.notifyKeyEvent(event, policyFlags); |
| } |
| |
| private void notifyClearAccessibilityNodeInfoCacheInternal() { |
| IAccessibilityServiceClient listener = mServiceInterface; |
| if (listener != null) { |
| try { |
| listener.clearAccessibilityNodeInfoCache(); |
| } catch (RemoteException re) { |
| Slog.e(LOG_TAG, "Error during requesting accessibility info cache" |
| + " to be cleared.", re); |
| } |
| } |
| } |
| |
| private void sendDownAndUpKeyEvents(int keyCode) { |
| final long token = Binder.clearCallingIdentity(); |
| |
| // Inject down. |
| final long downTime = SystemClock.uptimeMillis(); |
| KeyEvent down = KeyEvent.obtain(downTime, downTime, KeyEvent.ACTION_DOWN, keyCode, 0, 0, |
| KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FROM_SYSTEM, |
| InputDevice.SOURCE_KEYBOARD, null); |
| InputManager.getInstance().injectInputEvent(down, |
| InputManager.INJECT_INPUT_EVENT_MODE_ASYNC); |
| down.recycle(); |
| |
| // Inject up. |
| final long upTime = SystemClock.uptimeMillis(); |
| KeyEvent up = KeyEvent.obtain(downTime, upTime, KeyEvent.ACTION_UP, keyCode, 0, 0, |
| KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FROM_SYSTEM, |
| InputDevice.SOURCE_KEYBOARD, null); |
| InputManager.getInstance().injectInputEvent(up, |
| InputManager.INJECT_INPUT_EVENT_MODE_ASYNC); |
| up.recycle(); |
| |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| private void expandNotifications() { |
| final long token = Binder.clearCallingIdentity(); |
| |
| StatusBarManager statusBarManager = (StatusBarManager) mContext.getSystemService( |
| android.app.Service.STATUS_BAR_SERVICE); |
| statusBarManager.expandNotificationsPanel(); |
| |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| private void expandQuickSettings() { |
| final long token = Binder.clearCallingIdentity(); |
| |
| StatusBarManager statusBarManager = (StatusBarManager) mContext.getSystemService( |
| android.app.Service.STATUS_BAR_SERVICE); |
| statusBarManager.expandSettingsPanel(); |
| |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| private void openRecents() { |
| final long token = Binder.clearCallingIdentity(); |
| |
| IStatusBarService statusBarService = IStatusBarService.Stub.asInterface( |
| ServiceManager.getService("statusbar")); |
| try { |
| statusBarService.toggleRecentApps(); |
| } catch (RemoteException e) { |
| Slog.e(LOG_TAG, "Error toggling recent apps."); |
| } |
| |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| private IAccessibilityInteractionConnection getConnectionLocked(int windowId) { |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Trying to get interaction connection to windowId: " + windowId); |
| } |
| AccessibilityConnectionWrapper wrapper = mGlobalInteractionConnections.get(windowId); |
| if (wrapper == null) { |
| wrapper = getCurrentUserStateLocked().mInteractionConnections.get(windowId); |
| } |
| if (wrapper != null && wrapper.mConnection != null) { |
| return wrapper.mConnection; |
| } |
| if (DEBUG) { |
| Slog.e(LOG_TAG, "No interaction connection to window: " + windowId); |
| } |
| return null; |
| } |
| |
| private int resolveAccessibilityWindowIdLocked(int accessibilityWindowId) { |
| if (accessibilityWindowId == AccessibilityNodeInfo.ACTIVE_WINDOW_ID) { |
| return mSecurityPolicy.mActiveWindowId; |
| } |
| return accessibilityWindowId; |
| } |
| |
| private MagnificationSpec getCompatibleMagnificationSpec(int windowId) { |
| try { |
| IBinder windowToken = mGlobalWindowTokens.get(windowId); |
| if (windowToken == null) { |
| windowToken = getCurrentUserStateLocked().mWindowTokens.get(windowId); |
| } |
| if (windowToken != null) { |
| return mWindowManagerService.getCompatibleMagnificationSpecForWindow( |
| windowToken); |
| } |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| return null; |
| } |
| |
| private final class InvocationHandler extends Handler { |
| |
| public static final int MSG_ON_GESTURE = 1; |
| public static final int MSG_ON_KEY_EVENT = 2; |
| public static final int MSG_CLEAR_ACCESSIBILITY_NODE_INFO_CACHE = 3; |
| public static final int MSG_ON_KEY_EVENT_TIMEOUT = 4; |
| |
| public InvocationHandler(Looper looper) { |
| super(looper, null, true); |
| } |
| |
| @Override |
| public void handleMessage(Message message) { |
| final int type = message.what; |
| switch (type) { |
| case MSG_ON_GESTURE: { |
| final int gestureId = message.arg1; |
| notifyGestureInternal(gestureId); |
| } break; |
| case MSG_ON_KEY_EVENT: { |
| KeyEvent event = (KeyEvent) message.obj; |
| final int policyFlags = message.arg1; |
| notifyKeyEventInternal(event, policyFlags); |
| } break; |
| case MSG_CLEAR_ACCESSIBILITY_NODE_INFO_CACHE: { |
| notifyClearAccessibilityNodeInfoCacheInternal(); |
| } break; |
| case MSG_ON_KEY_EVENT_TIMEOUT: { |
| PendingEvent eventState = (PendingEvent) message.obj; |
| setOnKeyEventResult(false, eventState.sequence); |
| } break; |
| default: { |
| throw new IllegalArgumentException("Unknown message: " + type); |
| } |
| } |
| } |
| } |
| |
| private final class KeyEventDispatcher { |
| |
| private static final long ON_KEY_EVENT_TIMEOUT_MILLIS = 500; |
| |
| private PendingEvent mPendingEvents; |
| |
| private final InputEventConsistencyVerifier mSentEventsVerifier = |
| InputEventConsistencyVerifier.isInstrumentationEnabled() |
| ? new InputEventConsistencyVerifier( |
| this, 0, KeyEventDispatcher.class.getSimpleName()) : null; |
| |
| public void notifyKeyEvent(KeyEvent event, int policyFlags) { |
| final PendingEvent pendingEvent; |
| |
| synchronized (mLock) { |
| pendingEvent = addPendingEventLocked(event, policyFlags); |
| } |
| |
| Message message = mInvocationHandler.obtainMessage( |
| InvocationHandler.MSG_ON_KEY_EVENT_TIMEOUT, pendingEvent); |
| mInvocationHandler.sendMessageDelayed(message, ON_KEY_EVENT_TIMEOUT_MILLIS); |
| |
| try { |
| // Accessibility services are exclusively not in the system |
| // process, therefore no need to clone the motion event to |
| // prevent tampering. It will be cloned in the IPC call. |
| mServiceInterface.onKeyEvent(pendingEvent.event, pendingEvent.sequence); |
| } catch (RemoteException re) { |
| setOnKeyEventResult(false, pendingEvent.sequence); |
| } |
| } |
| |
| public void setOnKeyEventResult(boolean handled, int sequence) { |
| synchronized (mLock) { |
| PendingEvent pendingEvent = removePendingEventLocked(sequence); |
| if (pendingEvent != null) { |
| mInvocationHandler.removeMessages( |
| InvocationHandler.MSG_ON_KEY_EVENT_TIMEOUT, |
| pendingEvent); |
| pendingEvent.handled = handled; |
| finishPendingEventLocked(pendingEvent); |
| } |
| } |
| } |
| |
| public void flush() { |
| synchronized (mLock) { |
| cancelAllPendingEventsLocked(); |
| if (mSentEventsVerifier != null) { |
| mSentEventsVerifier.reset(); |
| } |
| } |
| } |
| |
| private PendingEvent addPendingEventLocked(KeyEvent event, int policyFlags) { |
| final int sequence = event.getSequenceNumber(); |
| PendingEvent pendingEvent = obtainPendingEventLocked(event, policyFlags, sequence); |
| pendingEvent.next = mPendingEvents; |
| mPendingEvents = pendingEvent; |
| return pendingEvent; |
| } |
| |
| private PendingEvent removePendingEventLocked(int sequence) { |
| PendingEvent previous = null; |
| PendingEvent current = mPendingEvents; |
| |
| while (current != null) { |
| if (current.sequence == sequence) { |
| if (previous != null) { |
| previous.next = current.next; |
| } else { |
| mPendingEvents = current.next; |
| } |
| current.next = null; |
| return current; |
| } |
| previous = current; |
| current = current.next; |
| } |
| return null; |
| } |
| |
| private void finishPendingEventLocked(PendingEvent pendingEvent) { |
| if (!pendingEvent.handled) { |
| sendKeyEventToInputFilter(pendingEvent.event, pendingEvent.policyFlags); |
| } |
| // Nullify the event since we do not want it to be |
| // recycled yet. It will be sent to the input filter. |
| pendingEvent.event = null; |
| recyclePendingEventLocked(pendingEvent); |
| } |
| |
| private void sendKeyEventToInputFilter(KeyEvent event, int policyFlags) { |
| if (DEBUG) { |
| Slog.i(LOG_TAG, "Injecting event: " + event); |
| } |
| if (mSentEventsVerifier != null) { |
| mSentEventsVerifier.onKeyEvent(event, 0); |
| } |
| policyFlags |= WindowManagerPolicy.FLAG_PASS_TO_USER; |
| mMainHandler.obtainMessage(MainHandler.MSG_SEND_KEY_EVENT_TO_INPUT_FILTER, |
| policyFlags, 0, event).sendToTarget(); |
| } |
| |
| private void cancelAllPendingEventsLocked() { |
| while (mPendingEvents != null) { |
| PendingEvent pendingEvent = removePendingEventLocked(mPendingEvents.sequence); |
| pendingEvent.handled = false; |
| mInvocationHandler.removeMessages(InvocationHandler.MSG_ON_KEY_EVENT_TIMEOUT, |
| pendingEvent); |
| finishPendingEventLocked(pendingEvent); |
| } |
| } |
| } |
| } |
| |
| private static final class PendingEvent { |
| PendingEvent next; |
| |
| KeyEvent event; |
| int policyFlags; |
| int sequence; |
| boolean handled; |
| |
| public void clear() { |
| if (event != null) { |
| event.recycle(); |
| event = null; |
| } |
| next = null; |
| policyFlags = 0; |
| sequence = 0; |
| handled = false; |
| } |
| } |
| |
| final class SecurityPolicy { |
| private static final int VALID_ACTIONS = |
| AccessibilityNodeInfo.ACTION_CLICK |
| | AccessibilityNodeInfo.ACTION_LONG_CLICK |
| | AccessibilityNodeInfo.ACTION_FOCUS |
| | AccessibilityNodeInfo.ACTION_CLEAR_FOCUS |
| | AccessibilityNodeInfo.ACTION_SELECT |
| | AccessibilityNodeInfo.ACTION_CLEAR_SELECTION |
| | AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS |
| | AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS |
| | AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY |
| | AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY |
| | AccessibilityNodeInfo.ACTION_NEXT_HTML_ELEMENT |
| | AccessibilityNodeInfo.ACTION_PREVIOUS_HTML_ELEMENT |
| | AccessibilityNodeInfo.ACTION_SCROLL_FORWARD |
| | AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD |
| | AccessibilityNodeInfo.ACTION_COPY |
| | AccessibilityNodeInfo.ACTION_PASTE |
| | AccessibilityNodeInfo.ACTION_CUT |
| | AccessibilityNodeInfo.ACTION_SET_SELECTION |
| | AccessibilityNodeInfo.ACTION_EXPAND |
| | AccessibilityNodeInfo.ACTION_COLLAPSE |
| | AccessibilityNodeInfo.ACTION_DISMISS; |
| |
| private static final int RETRIEVAL_ALLOWING_EVENT_TYPES = |
| AccessibilityEvent.TYPE_VIEW_CLICKED |
| | AccessibilityEvent.TYPE_VIEW_FOCUSED |
| | AccessibilityEvent.TYPE_VIEW_HOVER_ENTER |
| | AccessibilityEvent.TYPE_VIEW_HOVER_EXIT |
| | AccessibilityEvent.TYPE_VIEW_LONG_CLICKED |
| | AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED |
| | AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED |
| | AccessibilityEvent.TYPE_VIEW_SELECTED |
| | AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED |
| | AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED |
| | AccessibilityEvent.TYPE_VIEW_SCROLLED |
| | AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED |
| | AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED; |
| |
| private int mActiveWindowId; |
| private boolean mTouchInteractionInProgress; |
| |
| private boolean canDispatchAccessibilityEvent(AccessibilityEvent event) { |
| final int eventType = event.getEventType(); |
| switch (eventType) { |
| // All events that are for changes in a global window |
| // state should *always* be dispatched. |
| case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED: |
| case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED: |
| // All events generated by the user touching the |
| // screen should *always* be dispatched. |
| case AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_START: |
| case AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END: |
| case AccessibilityEvent.TYPE_GESTURE_DETECTION_START: |
| case AccessibilityEvent.TYPE_GESTURE_DETECTION_END: |
| case AccessibilityEvent.TYPE_TOUCH_INTERACTION_START: |
| case AccessibilityEvent.TYPE_TOUCH_INTERACTION_END: |
| // These will change the active window, so dispatch. |
| case AccessibilityEvent.TYPE_VIEW_HOVER_ENTER: |
| case AccessibilityEvent.TYPE_VIEW_HOVER_EXIT: { |
| return true; |
| } |
| // All events for changes in window content should be |
| // dispatched *only* if this window is the active one. |
| default: |
| return event.getWindowId() == mActiveWindowId; |
| } |
| } |
| |
| public void updateEventSourceLocked(AccessibilityEvent event) { |
| if ((event.getEventType() & RETRIEVAL_ALLOWING_EVENT_TYPES) == 0) { |
| event.setSource(null); |
| } |
| } |
| |
| public void updateActiveWindow(int windowId, int eventType) { |
| // The active window is either the window that has input focus or |
| // the window that the user is currently touching. If the user is |
| // touching a window that does not have input focus as soon as the |
| // the user stops touching that window the focused window becomes |
| // the active one. |
| switch (eventType) { |
| case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED: { |
| if (getFocusedWindowId() == windowId) { |
| mActiveWindowId = windowId; |
| } |
| } break; |
| case AccessibilityEvent.TYPE_VIEW_HOVER_ENTER: { |
| // Do not allow delayed hover events to confuse us |
| // which the active window is. |
| if (mTouchInteractionInProgress) { |
| mActiveWindowId = windowId; |
| } |
| } break; |
| } |
| } |
| |
| public void onTouchInteractionStart() { |
| mTouchInteractionInProgress = true; |
| } |
| |
| public void onTouchInteractionEnd() { |
| mTouchInteractionInProgress = false; |
| // We want to set the active window to be current immediately |
| // after the user has stopped touching the screen since if the |
| // user types with the IME he should get a feedback for the |
| // letter typed in the text view which is in the input focused |
| // window. Note that we always deliver hover accessibility events |
| // (they are a result of user touching the screen) so change of |
| // the active window before all hover accessibility events from |
| // the touched window are delivered is fine. |
| mActiveWindowId = getFocusedWindowId(); |
| } |
| |
| public int getRetrievalAllowingWindowLocked() { |
| return mActiveWindowId; |
| } |
| |
| public boolean canGetAccessibilityNodeInfoLocked(Service service, int windowId) { |
| return canRetrieveWindowContent(service) && isRetrievalAllowingWindow(windowId); |
| } |
| |
| public boolean canPerformActionLocked(Service service, int windowId, int action, |
| Bundle arguments) { |
| return canRetrieveWindowContent(service) |
| && isRetrievalAllowingWindow(windowId) |
| && isActionPermitted(action); |
| } |
| |
| public boolean canRetrieveWindowContent(Service service) { |
| return (service.mAccessibilityServiceInfo.getCapabilities() |
| & AccessibilityServiceInfo.CAPABILITY_CAN_RETRIEVE_WINDOW_CONTENT) != 0; |
| } |
| |
| public void enforceCanRetrieveWindowContent(Service service) throws RemoteException { |
| // This happens due to incorrect registration so make it apparent. |
| if (!canRetrieveWindowContent(service)) { |
| Slog.e(LOG_TAG, "Accessibility serivce " + service.mComponentName + " does not " + |
| "declare android:canRetrieveWindowContent."); |
| throw new RemoteException(); |
| } |
| } |
| |
| public int resolveCallingUserIdEnforcingPermissionsLocked(int userId) { |
| final int callingUid = Binder.getCallingUid(); |
| if (callingUid == 0 |
| || callingUid == Process.SYSTEM_UID |
| || callingUid == Process.SHELL_UID) { |
| return mCurrentUserId; |
| } |
| final int callingUserId = UserHandle.getUserId(callingUid); |
| if (callingUserId == userId) { |
| return userId; |
| } |
| if (!hasPermission(Manifest.permission.INTERACT_ACROSS_USERS) |
| && !hasPermission(Manifest.permission.INTERACT_ACROSS_USERS_FULL)) { |
| throw new SecurityException("Call from user " + callingUserId + " as user " |
| + userId + " without permission INTERACT_ACROSS_USERS or " |
| + "INTERACT_ACROSS_USERS_FULL not allowed."); |
| } |
| if (userId == UserHandle.USER_CURRENT |
| || userId == UserHandle.USER_CURRENT_OR_SELF) { |
| return mCurrentUserId; |
| } |
| throw new IllegalArgumentException("Calling user can be changed to only " |
| + "UserHandle.USER_CURRENT or UserHandle.USER_CURRENT_OR_SELF."); |
| } |
| |
| public boolean isCallerInteractingAcrossUsers(int userId) { |
| final int callingUid = Binder.getCallingUid(); |
| return (Binder.getCallingPid() == android.os.Process.myPid() |
| || callingUid == Process.SHELL_UID |
| || userId == UserHandle.USER_CURRENT |
| || userId == UserHandle.USER_CURRENT_OR_SELF); |
| } |
| |
| private boolean isRetrievalAllowingWindow(int windowId) { |
| return (mActiveWindowId == windowId); |
| } |
| |
| private boolean isActionPermitted(int action) { |
| return (VALID_ACTIONS & action) != 0; |
| } |
| |
| private void enforceCallingPermission(String permission, String function) { |
| if (OWN_PROCESS_ID == Binder.getCallingPid()) { |
| return; |
| } |
| if (!hasPermission(permission)) { |
| throw new SecurityException("You do not have " + permission |
| + " required to call " + function + " from pid=" |
| + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()); |
| } |
| } |
| |
| private boolean hasPermission(String permission) { |
| return mContext.checkCallingPermission(permission) == PackageManager.PERMISSION_GRANTED; |
| } |
| |
| private int getFocusedWindowId() { |
| try { |
| // We call this only on window focus change or after touch |
| // exploration gesture end and the shown windows are not that |
| // many, so the linear look up is just fine. |
| IBinder token = mWindowManagerService.getFocusedWindowToken(); |
| if (token != null) { |
| synchronized (mLock) { |
| int windowId = getFocusedWindowIdLocked(token, mGlobalWindowTokens); |
| if (windowId < 0) { |
| windowId = getFocusedWindowIdLocked(token, |
| getCurrentUserStateLocked().mWindowTokens); |
| } |
| return windowId; |
| } |
| } |
| } catch (RemoteException re) { |
| /* ignore */ |
| } |
| return -1; |
| } |
| |
| private int getFocusedWindowIdLocked(IBinder token, SparseArray<IBinder> windows) { |
| final int windowCount = windows.size(); |
| for (int i = 0; i < windowCount; i++) { |
| if (windows.valueAt(i) == token) { |
| return windows.keyAt(i); |
| } |
| } |
| return -1; |
| } |
| } |
| |
| private class UserState { |
| public final int mUserId; |
| |
| // Non-transient state. |
| |
| public final RemoteCallbackList<IAccessibilityManagerClient> mClients = |
| new RemoteCallbackList<IAccessibilityManagerClient>(); |
| |
| public final SparseArray<AccessibilityConnectionWrapper> mInteractionConnections = |
| new SparseArray<AccessibilityConnectionWrapper>(); |
| |
| public final SparseArray<IBinder> mWindowTokens = new SparseArray<IBinder>(); |
| |
| // Transient state. |
| |
| public final CopyOnWriteArrayList<Service> mBoundServices = |
| new CopyOnWriteArrayList<Service>(); |
| |
| public final Map<ComponentName, Service> mComponentNameToServiceMap = |
| new HashMap<ComponentName, Service>(); |
| |
| public final List<AccessibilityServiceInfo> mInstalledServices = |
| new ArrayList<AccessibilityServiceInfo>(); |
| |
| public final Set<ComponentName> mBindingServices = new HashSet<ComponentName>(); |
| |
| public final Set<ComponentName> mEnabledServices = new HashSet<ComponentName>(); |
| |
| public final Set<ComponentName> mTouchExplorationGrantedServices = |
| new HashSet<ComponentName>(); |
| |
| public int mHandledFeedbackTypes = 0; |
| |
| public int mLastSentClientState = -1; |
| |
| public boolean mIsAccessibilityEnabled; |
| public boolean mIsTouchExplorationEnabled; |
| public boolean mIsEnhancedWebAccessibilityEnabled; |
| public boolean mIsDisplayMagnificationEnabled; |
| public boolean mIsFilterKeyEventsEnabled; |
| |
| private Service mUiAutomationService; |
| private IAccessibilityServiceClient mUiAutomationServiceClient; |
| |
| private IBinder mUiAutomationServiceOwner; |
| private final DeathRecipient mUiAutomationSerivceOnwerDeathRecipient = |
| new DeathRecipient() { |
| @Override |
| public void binderDied() { |
| mUiAutomationServiceOwner.unlinkToDeath( |
| mUiAutomationSerivceOnwerDeathRecipient, 0); |
| mUiAutomationServiceOwner = null; |
| if (mUiAutomationService != null) { |
| mUiAutomationService.binderDied(); |
| } |
| } |
| }; |
| |
| public UserState(int userId) { |
| mUserId = userId; |
| } |
| |
| public int getClientState() { |
| int clientState = 0; |
| if (mIsAccessibilityEnabled) { |
| clientState |= AccessibilityManager.STATE_FLAG_ACCESSIBILITY_ENABLED; |
| } |
| // Touch exploration relies on enabled accessibility. |
| if (mIsAccessibilityEnabled && mIsTouchExplorationEnabled) { |
| clientState |= AccessibilityManager.STATE_FLAG_TOUCH_EXPLORATION_ENABLED; |
| } |
| return clientState; |
| } |
| |
| public void onSwitchToAnotherUser() { |
| // Clear UI test automation state. |
| if (mUiAutomationService != null) { |
| mUiAutomationService.binderDied(); |
| } |
| |
| // Unbind all services. |
| unbindAllServicesLocked(this); |
| |
| // Clear service management state. |
| mBoundServices.clear(); |
| mBindingServices.clear(); |
| |
| // Clear event management state. |
| mHandledFeedbackTypes = 0; |
| mLastSentClientState = -1; |
| |
| // Clear state persisted in settings. |
| mEnabledServices.clear(); |
| mTouchExplorationGrantedServices.clear(); |
| mIsAccessibilityEnabled = false; |
| mIsTouchExplorationEnabled = false; |
| mIsEnhancedWebAccessibilityEnabled = false; |
| mIsDisplayMagnificationEnabled = false; |
| } |
| |
| public void destroyUiAutomationService() { |
| mUiAutomationService = null; |
| mUiAutomationServiceClient = null; |
| if (mUiAutomationServiceOwner != null) { |
| mUiAutomationServiceOwner.unlinkToDeath( |
| mUiAutomationSerivceOnwerDeathRecipient, 0); |
| mUiAutomationServiceOwner = null; |
| } |
| } |
| } |
| |
| private final class AccessibilityContentObserver extends ContentObserver { |
| |
| private final Uri mAccessibilityEnabledUri = Settings.Secure.getUriFor( |
| Settings.Secure.ACCESSIBILITY_ENABLED); |
| |
| private final Uri mTouchExplorationEnabledUri = Settings.Secure.getUriFor( |
| Settings.Secure.TOUCH_EXPLORATION_ENABLED); |
| |
| private final Uri mDisplayMagnificationEnabledUri = Settings.Secure.getUriFor( |
| Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED); |
| |
| private final Uri mEnabledAccessibilityServicesUri = Settings.Secure.getUriFor( |
| Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES); |
| |
| private final Uri mTouchExplorationGrantedAccessibilityServicesUri = Settings.Secure |
| .getUriFor(Settings.Secure.TOUCH_EXPLORATION_GRANTED_ACCESSIBILITY_SERVICES); |
| |
| private final Uri mEnhancedWebAccessibilityUri = Settings.Secure |
| .getUriFor(Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION); |
| |
| public AccessibilityContentObserver(Handler handler) { |
| super(handler); |
| } |
| |
| public void register(ContentResolver contentResolver) { |
| contentResolver.registerContentObserver(mAccessibilityEnabledUri, |
| false, this, UserHandle.USER_ALL); |
| contentResolver.registerContentObserver(mTouchExplorationEnabledUri, |
| false, this, UserHandle.USER_ALL); |
| contentResolver.registerContentObserver(mDisplayMagnificationEnabledUri, |
| false, this, UserHandle.USER_ALL); |
| contentResolver.registerContentObserver(mEnabledAccessibilityServicesUri, |
| false, this, UserHandle.USER_ALL); |
| contentResolver.registerContentObserver( |
| mTouchExplorationGrantedAccessibilityServicesUri, |
| false, this, UserHandle.USER_ALL); |
| contentResolver.registerContentObserver(mEnhancedWebAccessibilityUri, |
| false, this, UserHandle.USER_ALL); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| if (mAccessibilityEnabledUri.equals(uri)) { |
| synchronized (mLock) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readAccessibilityEnabledSettingLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } else if (mTouchExplorationEnabledUri.equals(uri)) { |
| synchronized (mLock) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readTouchExplorationEnabledSettingLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } else if (mDisplayMagnificationEnabledUri.equals(uri)) { |
| synchronized (mLock) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readDisplayMagnificationEnabledSettingLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } else if (mEnabledAccessibilityServicesUri.equals(uri)) { |
| synchronized (mLock) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readEnabledAccessibilityServicesLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } else if (mTouchExplorationGrantedAccessibilityServicesUri.equals(uri)) { |
| synchronized (mLock) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readTouchExplorationGrantedAccessibilityServicesLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } else if (mEnhancedWebAccessibilityUri.equals(uri)) { |
| synchronized (mLock) { |
| // We will update when the automation service dies. |
| UserState userState = getCurrentUserStateLocked(); |
| if (userState.mUiAutomationService == null) { |
| if (readEnhancedWebAccessibilityEnabledChangedLocked(userState)) { |
| onUserStateChangedLocked(userState); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |