cc4053e031
Note: This is a part of two CL change and contains the
system changes without updates to the settings.
1. Added a mechanism for configuring an accessibility service via
XML file specified in a meta-data tag (similar to IMEs).
2. Added property for specifying a settings activity for an
accessibility service.
3. Refactored the APIs in AccessibilityManager to return
lists of AccessiblityServiceInfo instead ServiceInfo
since the former describes an AccessibilityService in
particular (similar to IMEs).
Change-Id: Ie8781bb7e0cdb329e583b6702a612a507367ad7b
861 lines
32 KiB
Java
861 lines
32 KiB
Java
/*
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** Copyright 2009, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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package com.android.server.accessibility;
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import com.android.internal.content.PackageMonitor;
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import com.android.internal.os.HandlerCaller;
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import com.android.internal.os.HandlerCaller.SomeArgs;
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import com.android.server.wm.WindowManagerService;
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import org.xmlpull.v1.XmlPullParserException;
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import android.accessibilityservice.AccessibilityService;
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import android.accessibilityservice.AccessibilityServiceInfo;
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import android.accessibilityservice.IAccessibilityServiceConnection;
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import android.accessibilityservice.IEventListener;
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import android.app.PendingIntent;
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import android.content.BroadcastReceiver;
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import android.content.ComponentName;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.ServiceConnection;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.content.pm.ServiceInfo;
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import android.database.ContentObserver;
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import android.net.Uri;
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import android.os.Binder;
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import android.os.DeadObjectException;
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import android.os.Handler;
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import android.os.IBinder;
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import android.os.Message;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.provider.Settings;
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import android.text.TextUtils;
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import android.text.TextUtils.SimpleStringSplitter;
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import android.util.Slog;
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import android.util.SparseArray;
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import android.view.accessibility.AccessibilityEvent;
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import android.view.accessibility.IAccessibilityManager;
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import android.view.accessibility.IAccessibilityManagerClient;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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/**
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* This class is instantiated by the system as a system level service and can be
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* accessed only by the system. The task of this service is to be a centralized
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* event dispatch for {@link AccessibilityEvent}s generated across all processes
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* on the device. Events are dispatched to {@link AccessibilityService}s.
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*
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* @hide
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*/
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public class AccessibilityManagerService extends IAccessibilityManager.Stub
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implements HandlerCaller.Callback {
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private static final boolean DEBUG = false;
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private static final String LOG_TAG = "AccessibilityManagerService";
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private static int sIdCounter = 0;
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private static final int OWN_PROCESS_ID = android.os.Process.myPid();
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private static final int DO_SET_SERVICE_INFO = 10;
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final HandlerCaller mCaller;
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final Context mContext;
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final Object mLock = new Object();
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final List<Service> mServices = new ArrayList<Service>();
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final List<IAccessibilityManagerClient> mClients =
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new ArrayList<IAccessibilityManagerClient>();
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final Map<ComponentName, Service> mComponentNameToServiceMap = new HashMap<ComponentName, Service>();
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private final List<AccessibilityServiceInfo> mInstalledServices = new ArrayList<AccessibilityServiceInfo>();
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private final Set<ComponentName> mEnabledServices = new HashSet<ComponentName>();
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private final SimpleStringSplitter mStringColonSplitter = new SimpleStringSplitter(':');
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private final SparseArray<List<AccessibilityServiceInfo>> mFeedbackTypeToEnabledServicesMap =
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new SparseArray<List<AccessibilityServiceInfo>>();
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private PackageManager mPackageManager;
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private int mHandledFeedbackTypes = 0;
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private boolean mIsEnabled;
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private AccessibilityInputFilter mInputFilter;
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/**
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* Handler for delayed event dispatch.
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*/
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private Handler mHandler = new Handler() {
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@Override
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public void handleMessage(Message message) {
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Service service = (Service) message.obj;
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int eventType = message.arg1;
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synchronized (mLock) {
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notifyEventListenerLocked(service, eventType);
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AccessibilityEvent oldEvent = service.mPendingEvents.get(eventType);
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service.mPendingEvents.remove(eventType);
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tryRecycleLocked(oldEvent);
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}
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}
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};
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/**
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* Creates a new instance.
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*
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* @param context A {@link Context} instance.
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*/
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public AccessibilityManagerService(Context context) {
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mContext = context;
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mPackageManager = mContext.getPackageManager();
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mCaller = new HandlerCaller(context, this);
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registerPackageChangeAndBootCompletedBroadcastReceiver();
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registerSettingsContentObservers();
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}
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/**
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* Registers a {@link BroadcastReceiver} for the events of
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* adding/changing/removing/restarting a package and boot completion.
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*/
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private void registerPackageChangeAndBootCompletedBroadcastReceiver() {
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Context context = mContext;
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PackageMonitor monitor = new PackageMonitor() {
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@Override
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public void onSomePackagesChanged() {
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synchronized (mLock) {
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populateAccessibilityServiceListLocked();
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manageServicesLocked();
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}
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}
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@Override
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public boolean onHandleForceStop(Intent intent, String[] packages,
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int uid, boolean doit) {
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synchronized (mLock) {
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boolean changed = false;
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Iterator<ComponentName> it = mEnabledServices.iterator();
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while (it.hasNext()) {
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ComponentName comp = it.next();
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String compPkg = comp.getPackageName();
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for (String pkg : packages) {
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if (compPkg.equals(pkg)) {
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if (!doit) {
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return true;
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}
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it.remove();
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changed = true;
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}
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}
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}
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if (changed) {
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it = mEnabledServices.iterator();
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StringBuilder str = new StringBuilder();
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while (it.hasNext()) {
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if (str.length() > 0) {
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str.append(':');
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}
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str.append(it.next().flattenToShortString());
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}
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Settings.Secure.putString(mContext.getContentResolver(),
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Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES,
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str.toString());
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manageServicesLocked();
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}
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return false;
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}
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}
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@Override
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public void onReceive(Context context, Intent intent) {
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if (intent.getAction() == Intent.ACTION_BOOT_COMPLETED) {
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synchronized (mLock) {
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populateAccessibilityServiceListLocked();
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// get the accessibility enabled setting on boot
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mIsEnabled = Settings.Secure.getInt(mContext.getContentResolver(),
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Settings.Secure.ACCESSIBILITY_ENABLED, 0) == 1;
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// if accessibility is enabled inform our clients we are on
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if (mIsEnabled) {
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updateClientsLocked();
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}
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manageServicesLocked();
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}
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return;
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}
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super.onReceive(context, intent);
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}
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};
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// package changes
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monitor.register(context, true);
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// boot completed
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IntentFilter bootFiler = new IntentFilter(Intent.ACTION_BOOT_COMPLETED);
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mContext.registerReceiver(monitor, bootFiler);
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}
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/**
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* {@link ContentObserver}s for {@link Settings.Secure#ACCESSIBILITY_ENABLED}
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* and {@link Settings.Secure#ENABLED_ACCESSIBILITY_SERVICES} settings.
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*/
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private void registerSettingsContentObservers() {
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ContentResolver contentResolver = mContext.getContentResolver();
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Uri enabledUri = Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_ENABLED);
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contentResolver.registerContentObserver(enabledUri, false,
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new ContentObserver(new Handler()) {
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@Override
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public void onChange(boolean selfChange) {
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super.onChange(selfChange);
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synchronized (mLock) {
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mIsEnabled = Settings.Secure.getInt(mContext.getContentResolver(),
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Settings.Secure.ACCESSIBILITY_ENABLED, 0) == 1;
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if (mIsEnabled) {
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manageServicesLocked();
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} else {
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unbindAllServicesLocked();
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}
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updateClientsLocked();
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}
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}
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});
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Uri providersUri =
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Settings.Secure.getUriFor(Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
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contentResolver.registerContentObserver(providersUri, false,
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new ContentObserver(new Handler()) {
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@Override
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public void onChange(boolean selfChange) {
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super.onChange(selfChange);
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synchronized (mLock) {
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manageServicesLocked();
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}
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}
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});
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}
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public boolean addClient(IAccessibilityManagerClient client) {
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synchronized (mLock) {
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mClients.add(client);
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return mIsEnabled;
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}
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}
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public boolean sendAccessibilityEvent(AccessibilityEvent event) {
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synchronized (mLock) {
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notifyAccessibilityServicesDelayedLocked(event, false);
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notifyAccessibilityServicesDelayedLocked(event, true);
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}
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// event not scheduled for dispatch => recycle
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if (mHandledFeedbackTypes == 0) {
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event.recycle();
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} else {
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mHandledFeedbackTypes = 0;
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}
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return (OWN_PROCESS_ID != Binder.getCallingPid());
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}
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public List<AccessibilityServiceInfo> getInstalledAccessibilityServiceList() {
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synchronized (mLock) {
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return mInstalledServices;
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}
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}
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public List<AccessibilityServiceInfo> getEnabledAccessibilityServiceList(int feedbackType) {
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SparseArray<List<AccessibilityServiceInfo>> feedbackTypeToEnabledServicesMap =
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mFeedbackTypeToEnabledServicesMap;
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List<AccessibilityServiceInfo> enabledServices = new ArrayList<AccessibilityServiceInfo>();
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synchronized (mLock) {
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while (feedbackType != 0) {
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final int feedbackTypeBit = (1 << Integer.numberOfTrailingZeros(feedbackType));
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feedbackType &= ~feedbackTypeBit;
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List<AccessibilityServiceInfo> perFeedbackType =
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feedbackTypeToEnabledServicesMap.get(feedbackTypeBit);
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if (perFeedbackType != null) {
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enabledServices.addAll(perFeedbackType);
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}
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}
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}
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return enabledServices;
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}
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public void interrupt() {
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synchronized (mLock) {
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for (int i = 0, count = mServices.size(); i < count; i++) {
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Service service = mServices.get(i);
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try {
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service.mServiceInterface.onInterrupt();
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} catch (RemoteException re) {
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if (re instanceof DeadObjectException) {
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Slog.w(LOG_TAG, "Dead " + service.mService + ". Cleaning up.");
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if (removeDeadServiceLocked(service)) {
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count--;
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i--;
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}
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} else {
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Slog.e(LOG_TAG, "Error during sending interrupt request to "
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+ service.mService, re);
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}
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}
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}
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}
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}
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public void executeMessage(Message message) {
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switch (message.what) {
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case DO_SET_SERVICE_INFO:
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SomeArgs arguments = ((SomeArgs) message.obj);
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AccessibilityServiceInfo info = (AccessibilityServiceInfo) arguments.arg1;
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Service service = (Service) arguments.arg2;
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synchronized (mLock) {
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// If the XML manifest had data to configure the service its info
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// should be already set. In such a case update only the dynamically
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// configurable properties.
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AccessibilityServiceInfo oldInfo = service.mAccessibilityServiceInfo;
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if (oldInfo != null) {
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oldInfo.updateDynamicallyConfigurableProperties(info);
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service.setAccessibilityServiceInfo(oldInfo);
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} else {
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service.setAccessibilityServiceInfo(info);
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}
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updateStateOnEnabledService(service);
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}
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return;
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default:
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Slog.w(LOG_TAG, "Unknown message type: " + message.what);
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}
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}
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/**
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* Populates the cached list of installed {@link AccessibilityService}s.
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*/
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private void populateAccessibilityServiceListLocked() {
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mInstalledServices.clear();
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List<ResolveInfo> installedServices = mPackageManager.queryIntentServices(
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new Intent(AccessibilityService.SERVICE_INTERFACE),
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PackageManager.GET_SERVICES | PackageManager.GET_META_DATA);
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for (int i = 0, count = installedServices.size(); i < count; i++) {
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ResolveInfo resolveInfo = installedServices.get(i);
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AccessibilityServiceInfo accessibilityServiceInfo;
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try {
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accessibilityServiceInfo = new AccessibilityServiceInfo(resolveInfo, mContext);
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mInstalledServices.add(accessibilityServiceInfo);
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} catch (XmlPullParserException xppe) {
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Slog.e(LOG_TAG, "Error while initializing AccessibilityServiceInfo", xppe);
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} catch (IOException ioe) {
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Slog.e(LOG_TAG, "Error while initializing AccessibilityServiceInfo", ioe);
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}
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}
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}
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/**
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* Performs {@link AccessibilityService}s delayed notification. The delay is configurable
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* and denotes the period after the last event before notifying the service.
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*
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* @param event The event.
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* @param isDefault True to notify default listeners, not default services.
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*/
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private void notifyAccessibilityServicesDelayedLocked(AccessibilityEvent event,
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boolean isDefault) {
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try {
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for (int i = 0, count = mServices.size(); i < count; i++) {
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Service service = mServices.get(i);
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if (service.mIsDefault == isDefault) {
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if (canDispathEventLocked(service, event, mHandledFeedbackTypes)) {
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mHandledFeedbackTypes |= service.mFeedbackType;
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notifyAccessibilityServiceDelayedLocked(service, event);
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}
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}
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}
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} catch (IndexOutOfBoundsException oobe) {
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// An out of bounds exception can happen if services are going away
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// as the for loop is running. If that happens, just bail because
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// there are no more services to notify.
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return;
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}
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}
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/**
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* Performs an {@link AccessibilityService} delayed notification. The delay is configurable
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* and denotes the period after the last event before notifying the service.
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*
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* @param service The service.
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* @param event The event.
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*/
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private void notifyAccessibilityServiceDelayedLocked(Service service,
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AccessibilityEvent event) {
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synchronized (mLock) {
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int eventType = event.getEventType();
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AccessibilityEvent oldEvent = service.mPendingEvents.get(eventType);
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service.mPendingEvents.put(eventType, event);
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int what = eventType | (service.mId << 16);
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if (oldEvent != null) {
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mHandler.removeMessages(what);
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tryRecycleLocked(oldEvent);
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}
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Message message = mHandler.obtainMessage(what, service);
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message.arg1 = event.getEventType();
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mHandler.sendMessageDelayed(message, service.mNotificationTimeout);
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}
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}
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/**
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* Recycles an event if it can be safely recycled. The condition is that no
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* not notified service is interested in the event.
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*
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* @param event The event.
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*/
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private void tryRecycleLocked(AccessibilityEvent event) {
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if (event == null) {
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return;
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}
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int eventType = event.getEventType();
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List<Service> services = mServices;
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// linear in the number of service which is not large
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for (int i = 0, count = services.size(); i < count; i++) {
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Service service = services.get(i);
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if (service.mPendingEvents.get(eventType) == event) {
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return;
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}
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}
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event.recycle();
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}
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/**
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* Notifies a service for a scheduled event given the event type.
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*
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* @param service The service.
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* @param eventType The type of the event to dispatch.
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*/
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private void notifyEventListenerLocked(Service service, int eventType) {
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IEventListener listener = service.mServiceInterface;
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AccessibilityEvent event = service.mPendingEvents.get(eventType);
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try {
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listener.onAccessibilityEvent(event);
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if (DEBUG) {
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Slog.i(LOG_TAG, "Event " + event + " sent to " + listener);
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}
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} catch (RemoteException re) {
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if (re instanceof DeadObjectException) {
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Slog.w(LOG_TAG, "Dead " + service.mService + ". Cleaning up.");
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removeDeadServiceLocked(service);
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} else {
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Slog.e(LOG_TAG, "Error during sending " + event + " to " + service.mService, re);
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}
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}
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}
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/**
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* Removes a dead service.
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*
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* @param service The service.
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* @return True if the service was removed, false otherwise.
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*/
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private boolean removeDeadServiceLocked(Service service) {
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if (DEBUG) {
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Slog.i(LOG_TAG, "Dead service " + service.mService + " removed");
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}
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mHandler.removeMessages(service.mId);
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updateStateOnDisabledService(service);
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return mServices.remove(service);
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}
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/**
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* Determines if given event can be dispatched to a service based on the package of the
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* event source and already notified services for that event type. Specifically, a
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* service is notified if it is interested in events from the package and no other service
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* providing the same feedback type has been notified. Exception are services the
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* provide generic feedback (feedback type left as a safety net for unforeseen feedback
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* types) which are always notified.
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*
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* @param service The potential receiver.
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* @param event The event.
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* @param handledFeedbackTypes The feedback types for which services have been notified.
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* @return True if the listener should be notified, false otherwise.
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*/
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private boolean canDispathEventLocked(Service service, AccessibilityEvent event,
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int handledFeedbackTypes) {
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|
|
if (!service.isConfigured()) {
|
|
return false;
|
|
}
|
|
|
|
if (!service.mService.isBinderAlive()) {
|
|
removeDeadServiceLocked(service);
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* Manages services by starting enabled ones and stopping disabled ones.
|
|
*/
|
|
private void manageServicesLocked() {
|
|
populateEnabledServicesLocked(mEnabledServices);
|
|
updateServicesStateLocked(mInstalledServices, mEnabledServices);
|
|
}
|
|
|
|
/**
|
|
* Unbinds all bound services.
|
|
*/
|
|
private void unbindAllServicesLocked() {
|
|
List<Service> services = mServices;
|
|
|
|
for (int i = 0, count = services.size(); i < count; i++) {
|
|
Service service = services.get(i);
|
|
if (service.unbind()) {
|
|
i--;
|
|
count--;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Populates a list with the {@link ComponentName}s of all enabled
|
|
* {@link AccessibilityService}s.
|
|
*
|
|
* @param enabledServices The list.
|
|
*/
|
|
private void populateEnabledServicesLocked(Set<ComponentName> enabledServices) {
|
|
enabledServices.clear();
|
|
|
|
String servicesValue = Settings.Secure.getString(mContext.getContentResolver(),
|
|
Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
|
|
|
|
if (servicesValue != null) {
|
|
TextUtils.SimpleStringSplitter splitter = mStringColonSplitter;
|
|
splitter.setString(servicesValue);
|
|
while (splitter.hasNext()) {
|
|
String str = splitter.next();
|
|
if (str == null || str.length() <= 0) {
|
|
continue;
|
|
}
|
|
ComponentName enabledService = ComponentName.unflattenFromString(str);
|
|
if (enabledService != null) {
|
|
enabledServices.add(enabledService);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates the state of each service by starting (or keeping running) enabled ones and
|
|
* stopping the rest.
|
|
*
|
|
* @param installedServices All installed {@link AccessibilityService}s.
|
|
* @param enabledServices The {@link ComponentName}s of the enabled services.
|
|
*/
|
|
private void updateServicesStateLocked(List<AccessibilityServiceInfo> installedServices,
|
|
Set<ComponentName> enabledServices) {
|
|
|
|
Map<ComponentName, Service> componentNameToServiceMap = mComponentNameToServiceMap;
|
|
boolean isEnabled = mIsEnabled;
|
|
|
|
for (int i = 0, count = installedServices.size(); i < count; i++) {
|
|
AccessibilityServiceInfo installedService = installedServices.get(i);
|
|
ComponentName componentName = ComponentName.unflattenFromString(
|
|
installedService.getId());
|
|
Service service = componentNameToServiceMap.get(componentName);
|
|
|
|
if (isEnabled) {
|
|
if (enabledServices.contains(componentName)) {
|
|
if (service == null) {
|
|
service = new Service(installedService);
|
|
}
|
|
service.bind();
|
|
} else if (!enabledServices.contains(componentName)) {
|
|
if (service != null) {
|
|
service.unbind();
|
|
}
|
|
}
|
|
} else {
|
|
if (service != null) {
|
|
service.unbind();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates the state of {@link android.view.accessibility.AccessibilityManager} clients.
|
|
*/
|
|
private void updateClientsLocked() {
|
|
for (int i = 0, count = mClients.size(); i < count; i++) {
|
|
try {
|
|
mClients.get(i).setEnabled(mIsEnabled);
|
|
} catch (RemoteException re) {
|
|
mClients.remove(i);
|
|
count--;
|
|
i--;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the input filter state. If the filter is in enabled it is registered
|
|
* in the window manager, otherwise the filter is removed from the latter.
|
|
*
|
|
* @param enabled Whether the input filter is enabled.
|
|
*/
|
|
private void setInputFilterEnabledLocked(boolean enabled) {
|
|
WindowManagerService wm = (WindowManagerService)ServiceManager.getService(
|
|
Context.WINDOW_SERVICE);
|
|
if (wm != null) {
|
|
if (enabled) {
|
|
if (mInputFilter == null) {
|
|
mInputFilter = new AccessibilityInputFilter(mContext);
|
|
}
|
|
wm.setInputFilter(mInputFilter);
|
|
} else {
|
|
wm.setInputFilter(null);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates the set of enabled services for a given feedback type and
|
|
* if more than one of them provides spoken feedback enables touch
|
|
* exploration.
|
|
*
|
|
* @param service An enable service.
|
|
*/
|
|
private void updateStateOnEnabledService(Service service) {
|
|
int feedbackType = service.mFeedbackType;
|
|
List<AccessibilityServiceInfo> enabledServices =
|
|
mFeedbackTypeToEnabledServicesMap.get(feedbackType);
|
|
if (enabledServices == null) {
|
|
enabledServices = new ArrayList<AccessibilityServiceInfo>();
|
|
mFeedbackTypeToEnabledServicesMap.put(feedbackType, enabledServices);
|
|
}
|
|
enabledServices.add(service.mAccessibilityServiceInfo);
|
|
|
|
// We enable touch exploration if at least one
|
|
// enabled service provides spoken feedback.
|
|
if (enabledServices.size() > 0
|
|
&& service.mFeedbackType == AccessibilityServiceInfo.FEEDBACK_SPOKEN) {
|
|
updateClientsLocked();
|
|
setInputFilterEnabledLocked(true);
|
|
}
|
|
}
|
|
|
|
private void updateStateOnDisabledService(Service service) {
|
|
List<AccessibilityServiceInfo> enabledServices =
|
|
mFeedbackTypeToEnabledServicesMap.get(service.mFeedbackType);
|
|
if (enabledServices == null) {
|
|
return;
|
|
}
|
|
enabledServices.remove(service.mAccessibilityServiceInfo);
|
|
// We disable touch exploration if no
|
|
// enabled service provides spoken feedback.
|
|
if (enabledServices.isEmpty()
|
|
&& service.mFeedbackType == AccessibilityServiceInfo.FEEDBACK_SPOKEN) {
|
|
updateClientsLocked();
|
|
setInputFilterEnabledLocked(false);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 {
|
|
int mId = 0;
|
|
|
|
AccessibilityServiceInfo mAccessibilityServiceInfo;
|
|
|
|
IBinder mService;
|
|
|
|
IEventListener mServiceInterface;
|
|
|
|
int mEventTypes;
|
|
|
|
int mFeedbackType;
|
|
|
|
Set<String> mPackageNames = new HashSet<String>();
|
|
|
|
boolean mIsDefault;
|
|
|
|
long mNotificationTimeout;
|
|
|
|
boolean mIsActive;
|
|
|
|
ComponentName mComponentName;
|
|
|
|
Intent mIntent;
|
|
|
|
// the events pending events to be dispatched to this service
|
|
final SparseArray<AccessibilityEvent> mPendingEvents =
|
|
new SparseArray<AccessibilityEvent>();
|
|
|
|
Service(AccessibilityServiceInfo accessibilityServiceInfo) {
|
|
mId = sIdCounter++;
|
|
setAccessibilityServiceInfo(accessibilityServiceInfo);
|
|
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));
|
|
}
|
|
|
|
public void setAccessibilityServiceInfo(AccessibilityServiceInfo info) {
|
|
mAccessibilityServiceInfo = info;
|
|
ServiceInfo serviceInfo = info.getResolveInfo().serviceInfo;
|
|
mComponentName = new ComponentName(serviceInfo.packageName, serviceInfo.name);
|
|
mEventTypes = info.eventTypes;
|
|
mFeedbackType = info.feedbackType;
|
|
String[] packageNames = info.packageNames;
|
|
if (packageNames != null) {
|
|
mPackageNames.addAll(Arrays.asList(packageNames));
|
|
}
|
|
mNotificationTimeout = info.notificationTimeout;
|
|
mIsDefault = (info.flags & AccessibilityServiceInfo.DEFAULT) != 0;
|
|
}
|
|
|
|
/**
|
|
* Binds to the accessibility service.
|
|
*
|
|
* @return True if binding is successful.
|
|
*/
|
|
public boolean bind() {
|
|
if (mService == null) {
|
|
return mContext.bindService(mIntent, this, Context.BIND_AUTO_CREATE);
|
|
}
|
|
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 unbind() {
|
|
if (mService != null) {
|
|
mService = null;
|
|
mContext.unbindService(this);
|
|
mComponentNameToServiceMap.remove(mComponentName);
|
|
mServices.remove(this);
|
|
updateStateOnDisabledService(this);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns if the service is configured i.e. at least event types of interest
|
|
* and feedback type must be set.
|
|
*
|
|
* @return True if the service is configured, false otherwise.
|
|
*/
|
|
public boolean isConfigured() {
|
|
return (mEventTypes != 0 && mFeedbackType != 0);
|
|
}
|
|
|
|
public void setServiceInfo(AccessibilityServiceInfo info) {
|
|
mCaller.obtainMessageOO(DO_SET_SERVICE_INFO, info, this).sendToTarget();
|
|
}
|
|
|
|
public void onServiceConnected(ComponentName componentName, IBinder service) {
|
|
mService = service;
|
|
mServiceInterface = IEventListener.Stub.asInterface(service);
|
|
|
|
try {
|
|
mServiceInterface.setConnection(this);
|
|
synchronized (mLock) {
|
|
if (!mServices.contains(this)) {
|
|
mServices.add(this);
|
|
mComponentNameToServiceMap.put(componentName, this);
|
|
if (isConfigured()) {
|
|
updateStateOnEnabledService(this);
|
|
}
|
|
}
|
|
}
|
|
} catch (RemoteException re) {
|
|
Slog.w(LOG_TAG, "Error while setting Controller for service: " + service, re);
|
|
}
|
|
}
|
|
|
|
public void onServiceDisconnected(ComponentName componentName) {
|
|
synchronized (mLock) {
|
|
Service service = mComponentNameToServiceMap.remove(componentName);
|
|
mServices.remove(service);
|
|
}
|
|
}
|
|
}
|
|
}
|