777 lines
28 KiB
Java
777 lines
28 KiB
Java
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/*
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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;
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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 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.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.Config;
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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.util.ArrayList;
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import java.util.Arrays;
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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 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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private final ArrayList<ClientDeathHandler> mClientDeathHandlers =
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new ArrayList<ClientDeathHandler>();
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final Map<ComponentName, Service> mComponentNameToServiceMap =
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new HashMap<ComponentName, Service>();
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private final List<ServiceInfo> mInstalledServices = new ArrayList<ServiceInfo>();
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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 PackageManager mPackageManager;
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private int mHandledFeedbackTypes = 0;
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private boolean mIsEnabled;
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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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private class ClientDeathHandler implements IBinder.DeathRecipient {
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final IAccessibilityManagerClient mClient;
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ClientDeathHandler(IAccessibilityManagerClient client) {
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mClient = client;
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}
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public void binderDied() {
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synchronized (mLock) {
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mClients.remove(mClient);
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mClientDeathHandlers.remove(this);
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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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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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mIsEnabled = Settings.Secure.getInt(mContext.getContentResolver(),
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Settings.Secure.ACCESSIBILITY_ENABLED, 0) == 1;
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synchronized (mLock) {
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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 void addClient(IAccessibilityManagerClient client) {
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synchronized (mLock) {
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try {
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client.setEnabled(mIsEnabled);
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mClients.add(client);
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ClientDeathHandler cdh = new ClientDeathHandler(client);
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mClientDeathHandlers.add(cdh);
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client.asBinder().linkToDeath(cdh, 0);
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} catch (RemoteException re) {
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Slog.w(LOG_TAG, "Dead AccessibilityManagerClient: " + client, re);
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}
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}
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}
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public void removeClient(IAccessibilityManagerClient client) {
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synchronized (mLock) {
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if (mClients.remove(client)) {
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int size = mClientDeathHandlers.size();
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for (int i = 0; i < size; i++) {
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final ClientDeathHandler cdh = mClientDeathHandlers.get(i);
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if (cdh.mClient == client) {
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mClientDeathHandlers.remove(i);
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client.asBinder().unlinkToDeath(cdh, 0);
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break;
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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 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<ServiceInfo> getAccessibilityServiceList() {
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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 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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service.mEventTypes = info.eventTypes;
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service.mFeedbackType = info.feedbackType;
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String[] packageNames = info.packageNames;
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if (packageNames != null) {
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service.mPackageNames.addAll(Arrays.asList(packageNames));
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}
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service.mNotificationTimeout = info.notificationTimeout;
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service.mIsDefault = (info.flags & AccessibilityServiceInfo.DEFAULT) != 0;
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}
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mCaller.recycleArgs(arguments);
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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), PackageManager.GET_SERVICES);
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||
|
|
for (int i = 0, count = installedServices.size(); i < count; i++) {
|
||
|
|
mInstalledServices.add(installedServices.get(i).serviceInfo);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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 {
|
||
|
|
for (int i = 0, count = mServices.size(); i < count; i++) {
|
||
|
|
Service service = mServices.get(i);
|
||
|
|
|
||
|
|
if (service.mIsDefault == isDefault) {
|
||
|
|
if (canDispathEventLocked(service, event, mHandledFeedbackTypes)) {
|
||
|
|
mHandledFeedbackTypes |= service.mFeedbackType;
|
||
|
|
notifyAccessibilityServiceDelayedLocked(service, 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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Performs an {@link AccessibilityService} delayed notification. The delay is configurable
|
||
|
|
* and denotes the period after the last event before notifying the service.
|
||
|
|
*
|
||
|
|
* @param service The service.
|
||
|
|
* @param event The event.
|
||
|
|
*/
|
||
|
|
private void notifyAccessibilityServiceDelayedLocked(Service service,
|
||
|
|
AccessibilityEvent event) {
|
||
|
|
synchronized (mLock) {
|
||
|
|
int eventType = event.getEventType();
|
||
|
|
AccessibilityEvent oldEvent = service.mPendingEvents.get(eventType);
|
||
|
|
service.mPendingEvents.put(eventType, event);
|
||
|
|
|
||
|
|
int what = eventType | (service.mId << 16);
|
||
|
|
if (oldEvent != null) {
|
||
|
|
mHandler.removeMessages(what);
|
||
|
|
tryRecycleLocked(oldEvent);
|
||
|
|
}
|
||
|
|
|
||
|
|
Message message = mHandler.obtainMessage(what, service);
|
||
|
|
message.arg1 = event.getEventType();
|
||
|
|
mHandler.sendMessageDelayed(message, service.mNotificationTimeout);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Recycles an event if it can be safely recycled. The condition is that no
|
||
|
|
* not notified service is interested in the event.
|
||
|
|
*
|
||
|
|
* @param event The event.
|
||
|
|
*/
|
||
|
|
private void tryRecycleLocked(AccessibilityEvent event) {
|
||
|
|
if (event == null) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
int eventType = event.getEventType();
|
||
|
|
List<Service> services = mServices;
|
||
|
|
|
||
|
|
// linear in the number of service which is not large
|
||
|
|
for (int i = 0, count = services.size(); i < count; i++) {
|
||
|
|
Service service = services.get(i);
|
||
|
|
if (service.mPendingEvents.get(eventType) == event) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
event.recycle();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Notifies a service for a scheduled event given the event type.
|
||
|
|
*
|
||
|
|
* @param service The service.
|
||
|
|
* @param eventType The type of the event to dispatch.
|
||
|
|
*/
|
||
|
|
private void notifyEventListenerLocked(Service service, int eventType) {
|
||
|
|
IEventListener listener = service.mServiceInterface;
|
||
|
|
AccessibilityEvent event = service.mPendingEvents.get(eventType);
|
||
|
|
|
||
|
|
try {
|
||
|
|
listener.onAccessibilityEvent(event);
|
||
|
|
if (Config.DEBUG) {
|
||
|
|
Slog.i(LOG_TAG, "Event " + event + " sent to " + listener);
|
||
|
|
}
|
||
|
|
} catch (RemoteException re) {
|
||
|
|
if (re instanceof DeadObjectException) {
|
||
|
|
Slog.w(LOG_TAG, "Dead " + service.mService + ". Cleaning up.");
|
||
|
|
synchronized (mLock) {
|
||
|
|
removeDeadServiceLocked(service);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
Slog.e(LOG_TAG, "Error during sending " + event + " to " + service.mService, re);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Removes a dead service.
|
||
|
|
*
|
||
|
|
* @param service The service.
|
||
|
|
* @return True if the service was removed, false otherwise.
|
||
|
|
*/
|
||
|
|
private boolean removeDeadServiceLocked(Service service) {
|
||
|
|
mServices.remove(service);
|
||
|
|
mHandler.removeMessages(service.mId);
|
||
|
|
|
||
|
|
if (Config.DEBUG) {
|
||
|
|
Slog.i(LOG_TAG, "Dead service " + service.mService + " removed");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mServices.isEmpty()) {
|
||
|
|
mIsEnabled = false;
|
||
|
|
updateClientsLocked();
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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.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);
|
||
|
|
|
||
|
|
service.unbind();
|
||
|
|
mComponentNameToServiceMap.remove(service.mComponentName);
|
||
|
|
}
|
||
|
|
services.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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<ServiceInfo> installedServices,
|
||
|
|
Set<ComponentName> enabledServices) {
|
||
|
|
|
||
|
|
Map<ComponentName, Service> componentNameToServiceMap = mComponentNameToServiceMap;
|
||
|
|
List<Service> services = mServices;
|
||
|
|
boolean isEnabled = mIsEnabled;
|
||
|
|
|
||
|
|
for (int i = 0, count = installedServices.size(); i < count; i++) {
|
||
|
|
ServiceInfo intalledService = installedServices.get(i);
|
||
|
|
ComponentName componentName = new ComponentName(intalledService.packageName,
|
||
|
|
intalledService.name);
|
||
|
|
Service service = componentNameToServiceMap.get(componentName);
|
||
|
|
|
||
|
|
if (isEnabled && enabledServices.contains(componentName)) {
|
||
|
|
if (service == null) {
|
||
|
|
new Service(componentName).bind();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (service != null) {
|
||
|
|
service.unbind();
|
||
|
|
componentNameToServiceMap.remove(componentName);
|
||
|
|
services.remove(service);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
|
||
|
|
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(ComponentName componentName) {
|
||
|
|
mId = sIdCounter++;
|
||
|
|
mComponentName = componentName;
|
||
|
|
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));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Binds to the accessibility service.
|
||
|
|
*/
|
||
|
|
public void bind() {
|
||
|
|
if (mService == null) {
|
||
|
|
mContext.bindService(mIntent, this, Context.BIND_AUTO_CREATE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Unbinds form the accessibility service and removes it from the data
|
||
|
|
* structures for service management.
|
||
|
|
*/
|
||
|
|
public void unbind() {
|
||
|
|
if (mService != null) {
|
||
|
|
mContext.unbindService(this);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} 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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|