| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server; |
| |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.textservice.ISpellCheckerService; |
| import com.android.internal.textservice.ISpellCheckerSession; |
| import com.android.internal.textservice.ISpellCheckerSessionListener; |
| import com.android.internal.textservice.ITextServicesManager; |
| import com.android.internal.textservice.ITextServicesSessionListener; |
| |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.ServiceInfo; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.provider.Settings; |
| import android.service.textservice.SpellCheckerService; |
| import android.text.TextUtils; |
| import android.util.Slog; |
| import android.view.textservice.SpellCheckerInfo; |
| import android.view.textservice.SpellCheckerSubtype; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| public class TextServicesManagerService extends ITextServicesManager.Stub { |
| private static final String TAG = TextServicesManagerService.class.getSimpleName(); |
| private static final boolean DBG = false; |
| |
| private final Context mContext; |
| private boolean mSystemReady; |
| private final TextServicesMonitor mMonitor; |
| private final HashMap<String, SpellCheckerInfo> mSpellCheckerMap = |
| new HashMap<String, SpellCheckerInfo>(); |
| private final ArrayList<SpellCheckerInfo> mSpellCheckerList = new ArrayList<SpellCheckerInfo>(); |
| private final HashMap<String, SpellCheckerBindGroup> mSpellCheckerBindGroups = |
| new HashMap<String, SpellCheckerBindGroup>(); |
| |
| public void systemReady() { |
| if (!mSystemReady) { |
| mSystemReady = true; |
| } |
| } |
| |
| public TextServicesManagerService(Context context) { |
| mSystemReady = false; |
| mContext = context; |
| mMonitor = new TextServicesMonitor(); |
| mMonitor.register(context, true); |
| synchronized (mSpellCheckerMap) { |
| buildSpellCheckerMapLocked(context, mSpellCheckerList, mSpellCheckerMap); |
| } |
| SpellCheckerInfo sci = getCurrentSpellChecker(null); |
| if (sci == null) { |
| sci = findAvailSpellCheckerLocked(null, null); |
| if (sci != null) { |
| // Set the current spell checker if there is one or more spell checkers |
| // available. In this case, "sci" is the first one in the available spell |
| // checkers. |
| setCurrentSpellCheckerLocked(sci.getId()); |
| } |
| } |
| } |
| |
| private class TextServicesMonitor extends PackageMonitor { |
| @Override |
| public void onSomePackagesChanged() { |
| synchronized (mSpellCheckerMap) { |
| buildSpellCheckerMapLocked(mContext, mSpellCheckerList, mSpellCheckerMap); |
| // TODO: Update for each locale |
| SpellCheckerInfo sci = getCurrentSpellChecker(null); |
| if (sci == null) return; |
| final String packageName = sci.getPackageName(); |
| final int change = isPackageDisappearing(packageName); |
| if (// Package disappearing |
| change == PACKAGE_PERMANENT_CHANGE || change == PACKAGE_TEMPORARY_CHANGE |
| // Package modified |
| || isPackageModified(packageName)) { |
| sci = findAvailSpellCheckerLocked(null, packageName); |
| if (sci != null) { |
| setCurrentSpellCheckerLocked(sci.getId()); |
| } |
| } |
| } |
| } |
| } |
| |
| private static void buildSpellCheckerMapLocked(Context context, |
| ArrayList<SpellCheckerInfo> list, HashMap<String, SpellCheckerInfo> map) { |
| list.clear(); |
| map.clear(); |
| final PackageManager pm = context.getPackageManager(); |
| List<ResolveInfo> services = pm.queryIntentServices( |
| new Intent(SpellCheckerService.SERVICE_INTERFACE), PackageManager.GET_META_DATA); |
| final int N = services.size(); |
| for (int i = 0; i < N; ++i) { |
| final ResolveInfo ri = services.get(i); |
| final ServiceInfo si = ri.serviceInfo; |
| final ComponentName compName = new ComponentName(si.packageName, si.name); |
| if (!android.Manifest.permission.BIND_TEXT_SERVICE.equals(si.permission)) { |
| Slog.w(TAG, "Skipping text service " + compName |
| + ": it does not require the permission " |
| + android.Manifest.permission.BIND_TEXT_SERVICE); |
| continue; |
| } |
| if (DBG) Slog.d(TAG, "Add: " + compName); |
| try { |
| final SpellCheckerInfo sci = new SpellCheckerInfo(context, ri); |
| list.add(sci); |
| map.put(sci.getId(), sci); |
| } catch (XmlPullParserException e) { |
| Slog.w(TAG, "Unable to load the spell checker " + compName, e); |
| } catch (IOException e) { |
| Slog.w(TAG, "Unable to load the spell checker " + compName, e); |
| } |
| } |
| if (DBG) { |
| Slog.d(TAG, "buildSpellCheckerMapLocked: " + list.size() + "," + map.size()); |
| } |
| } |
| |
| // TODO: find an appropriate spell checker for specified locale |
| private SpellCheckerInfo findAvailSpellCheckerLocked(String locale, String prefPackage) { |
| final int spellCheckersCount = mSpellCheckerList.size(); |
| if (spellCheckersCount == 0) { |
| Slog.w(TAG, "no available spell checker services found"); |
| return null; |
| } |
| if (prefPackage != null) { |
| for (int i = 0; i < spellCheckersCount; ++i) { |
| final SpellCheckerInfo sci = mSpellCheckerList.get(i); |
| if (prefPackage.equals(sci.getPackageName())) { |
| if (DBG) { |
| Slog.d(TAG, "findAvailSpellCheckerLocked: " + sci.getPackageName()); |
| } |
| return sci; |
| } |
| } |
| } |
| if (spellCheckersCount > 1) { |
| Slog.w(TAG, "more than one spell checker service found, picking first"); |
| } |
| return mSpellCheckerList.get(0); |
| } |
| |
| // TODO: Save SpellCheckerService by supported languages. Currently only one spell |
| // checker is saved. |
| @Override |
| public SpellCheckerInfo getCurrentSpellChecker(String locale) { |
| synchronized (mSpellCheckerMap) { |
| String curSpellCheckerId = |
| Settings.Secure.getString(mContext.getContentResolver(), |
| Settings.Secure.SELECTED_SPELL_CHECKER); |
| if (DBG) { |
| Slog.w(TAG, "getCurrentSpellChecker: " + curSpellCheckerId); |
| } |
| if (TextUtils.isEmpty(curSpellCheckerId)) { |
| return null; |
| } |
| return mSpellCheckerMap.get(curSpellCheckerId); |
| } |
| } |
| |
| // TODO: Save SpellCheckerSubtype by supported languages. |
| @Override |
| public SpellCheckerSubtype getCurrentSpellCheckerSubtype(String locale) { |
| synchronized (mSpellCheckerMap) { |
| final String subtypeHashCodeStr = |
| Settings.Secure.getString(mContext.getContentResolver(), |
| Settings.Secure.SELECTED_SPELL_CHECKER_SUBTYPE); |
| if (DBG) { |
| Slog.w(TAG, "getCurrentSpellChecker: " + subtypeHashCodeStr); |
| } |
| final SpellCheckerInfo sci = getCurrentSpellChecker(null); |
| if (sci.getSubtypeCount() == 0) { |
| return null; |
| } |
| if (TextUtils.isEmpty(subtypeHashCodeStr)) { |
| // Return the first Subtype if there is no settings for the current subtype. |
| return sci.getSubtypeAt(0); |
| } |
| final int hashCode = Integer.valueOf(subtypeHashCodeStr); |
| for (int i = 0; i < sci.getSubtypeCount(); ++i) { |
| final SpellCheckerSubtype scs = sci.getSubtypeAt(i); |
| if (scs.hashCode() == hashCode) { |
| return scs; |
| } |
| } |
| return sci.getSubtypeAt(0); |
| } |
| } |
| |
| @Override |
| public void getSpellCheckerService(String sciId, String locale, |
| ITextServicesSessionListener tsListener, ISpellCheckerSessionListener scListener, |
| Bundle bundle) { |
| if (!mSystemReady) { |
| return; |
| } |
| if (TextUtils.isEmpty(sciId) || tsListener == null || scListener == null) { |
| Slog.e(TAG, "getSpellCheckerService: Invalid input."); |
| return; |
| } |
| synchronized(mSpellCheckerMap) { |
| if (!mSpellCheckerMap.containsKey(sciId)) { |
| return; |
| } |
| final SpellCheckerInfo sci = mSpellCheckerMap.get(sciId); |
| final int uid = Binder.getCallingUid(); |
| if (mSpellCheckerBindGroups.containsKey(sciId)) { |
| final SpellCheckerBindGroup bindGroup = mSpellCheckerBindGroups.get(sciId); |
| if (bindGroup != null) { |
| final InternalDeathRecipient recipient = |
| mSpellCheckerBindGroups.get(sciId).addListener( |
| tsListener, locale, scListener, uid, bundle); |
| if (recipient == null) { |
| if (DBG) { |
| Slog.w(TAG, "Didn't create a death recipient."); |
| } |
| return; |
| } |
| if (bindGroup.mSpellChecker == null & bindGroup.mConnected) { |
| Slog.e(TAG, "The state of the spell checker bind group is illegal."); |
| bindGroup.removeAll(); |
| } else if (bindGroup.mSpellChecker != null) { |
| if (DBG) { |
| Slog.w(TAG, "Existing bind found. Return a spell checker session now. " |
| + "Listeners count = " + bindGroup.mListeners.size()); |
| } |
| try { |
| final ISpellCheckerSession session = |
| bindGroup.mSpellChecker.getISpellCheckerSession( |
| recipient.mScLocale, recipient.mScListener, bundle); |
| if (session != null) { |
| tsListener.onServiceConnected(session); |
| return; |
| } else { |
| if (DBG) { |
| Slog.w(TAG, "Existing bind already expired. "); |
| } |
| bindGroup.removeAll(); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Exception in getting spell checker session: " + e); |
| bindGroup.removeAll(); |
| } |
| } |
| } |
| } |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| startSpellCheckerServiceInnerLocked( |
| sci, locale, tsListener, scListener, uid, bundle); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| return; |
| } |
| |
| private void startSpellCheckerServiceInnerLocked(SpellCheckerInfo info, String locale, |
| ITextServicesSessionListener tsListener, ISpellCheckerSessionListener scListener, |
| int uid, Bundle bundle) { |
| if (DBG) { |
| Slog.w(TAG, "Start spell checker session inner locked."); |
| } |
| final String sciId = info.getId(); |
| final InternalServiceConnection connection = new InternalServiceConnection( |
| sciId, locale, scListener, bundle); |
| final Intent serviceIntent = new Intent(SpellCheckerService.SERVICE_INTERFACE); |
| serviceIntent.setComponent(info.getComponent()); |
| if (DBG) { |
| Slog.w(TAG, "bind service: " + info.getId()); |
| } |
| if (!mContext.bindService(serviceIntent, connection, Context.BIND_AUTO_CREATE)) { |
| Slog.e(TAG, "Failed to get a spell checker service."); |
| return; |
| } |
| final SpellCheckerBindGroup group = new SpellCheckerBindGroup( |
| connection, tsListener, locale, scListener, uid, bundle); |
| mSpellCheckerBindGroups.put(sciId, group); |
| } |
| |
| @Override |
| public SpellCheckerInfo[] getEnabledSpellCheckers() { |
| if (DBG) { |
| Slog.d(TAG, "getEnabledSpellCheckers: " + mSpellCheckerList.size()); |
| for (int i = 0; i < mSpellCheckerList.size(); ++i) { |
| Slog.d(TAG, "EnabledSpellCheckers: " + mSpellCheckerList.get(i).getPackageName()); |
| } |
| } |
| return mSpellCheckerList.toArray(new SpellCheckerInfo[mSpellCheckerList.size()]); |
| } |
| |
| @Override |
| public void finishSpellCheckerService(ISpellCheckerSessionListener listener) { |
| if (DBG) { |
| Slog.d(TAG, "FinishSpellCheckerService"); |
| } |
| synchronized(mSpellCheckerMap) { |
| for (SpellCheckerBindGroup group : mSpellCheckerBindGroups.values()) { |
| if (group == null) continue; |
| group.removeListener(listener); |
| } |
| } |
| } |
| |
| @Override |
| public void setCurrentSpellChecker(String locale, String sciId) { |
| synchronized(mSpellCheckerMap) { |
| if (mContext.checkCallingOrSelfPermission( |
| android.Manifest.permission.WRITE_SECURE_SETTINGS) |
| != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException( |
| "Requires permission " |
| + android.Manifest.permission.WRITE_SECURE_SETTINGS); |
| } |
| setCurrentSpellCheckerLocked(sciId); |
| } |
| } |
| |
| @Override |
| public void setCurrentSpellCheckerSubtype(String locale, int hashCode) { |
| synchronized(mSpellCheckerMap) { |
| if (mContext.checkCallingOrSelfPermission( |
| android.Manifest.permission.WRITE_SECURE_SETTINGS) |
| != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException( |
| "Requires permission " |
| + android.Manifest.permission.WRITE_SECURE_SETTINGS); |
| } |
| setCurrentSpellCheckerLocked(hashCode); |
| } |
| } |
| |
| private void setCurrentSpellCheckerLocked(String sciId) { |
| if (DBG) { |
| Slog.w(TAG, "setCurrentSpellChecker: " + sciId); |
| } |
| if (TextUtils.isEmpty(sciId) || !mSpellCheckerMap.containsKey(sciId)) return; |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| Settings.Secure.putString(mContext.getContentResolver(), |
| Settings.Secure.SELECTED_SPELL_CHECKER, sciId); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void setCurrentSpellCheckerLocked(int hashCode) { |
| if (DBG) { |
| Slog.w(TAG, "setCurrentSpellCheckerSubtype: " + hashCode); |
| } |
| final SpellCheckerInfo sci = getCurrentSpellChecker(null); |
| if (sci == null) return; |
| boolean found = false; |
| for (int i = 0; i < sci.getSubtypeCount(); ++i) { |
| if(sci.getSubtypeAt(i).hashCode() == hashCode) { |
| found = true; |
| break; |
| } |
| } |
| if (!found) { |
| return; |
| } |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| Settings.Secure.putString(mContext.getContentResolver(), |
| Settings.Secure.SELECTED_SPELL_CHECKER_SUBTYPE, String.valueOf(hashCode)); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| // SpellCheckerBindGroup contains active text service session listeners. |
| // If there are no listeners anymore, the SpellCheckerBindGroup instance will be removed from |
| // mSpellCheckerBindGroups |
| private class SpellCheckerBindGroup { |
| private final String TAG = SpellCheckerBindGroup.class.getSimpleName(); |
| private final InternalServiceConnection mInternalConnection; |
| private final ArrayList<InternalDeathRecipient> mListeners = |
| new ArrayList<InternalDeathRecipient>(); |
| public ISpellCheckerService mSpellChecker; |
| public boolean mConnected; |
| |
| public SpellCheckerBindGroup(InternalServiceConnection connection, |
| ITextServicesSessionListener listener, String locale, |
| ISpellCheckerSessionListener scListener, int uid, Bundle bundle) { |
| mInternalConnection = connection; |
| mConnected = false; |
| addListener(listener, locale, scListener, uid, bundle); |
| } |
| |
| public void onServiceConnected(ISpellCheckerService spellChecker) { |
| if (DBG) { |
| Slog.d(TAG, "onServiceConnected"); |
| } |
| synchronized(mSpellCheckerMap) { |
| for (InternalDeathRecipient listener : mListeners) { |
| try { |
| final ISpellCheckerSession session = spellChecker.getISpellCheckerSession( |
| listener.mScLocale, listener.mScListener, listener.mBundle); |
| listener.mTsListener.onServiceConnected(session); |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Exception in getting the spell checker session: " + e); |
| removeAll(); |
| return; |
| } |
| } |
| mSpellChecker = spellChecker; |
| mConnected = true; |
| } |
| } |
| |
| public InternalDeathRecipient addListener(ITextServicesSessionListener tsListener, |
| String locale, ISpellCheckerSessionListener scListener, int uid, Bundle bundle) { |
| if (DBG) { |
| Slog.d(TAG, "addListener: " + locale); |
| } |
| InternalDeathRecipient recipient = null; |
| synchronized(mSpellCheckerMap) { |
| try { |
| final int size = mListeners.size(); |
| for (int i = 0; i < size; ++i) { |
| if (mListeners.get(i).hasSpellCheckerListener(scListener)) { |
| // do not add the lister if the group already contains this. |
| return null; |
| } |
| } |
| recipient = new InternalDeathRecipient( |
| this, tsListener, locale, scListener, uid, bundle); |
| scListener.asBinder().linkToDeath(recipient, 0); |
| mListeners.add(recipient); |
| } catch(RemoteException e) { |
| // do nothing |
| } |
| cleanLocked(); |
| } |
| return recipient; |
| } |
| |
| public void removeListener(ISpellCheckerSessionListener listener) { |
| if (DBG) { |
| Slog.w(TAG, "remove listener: " + listener.hashCode()); |
| } |
| synchronized(mSpellCheckerMap) { |
| final int size = mListeners.size(); |
| final ArrayList<InternalDeathRecipient> removeList = |
| new ArrayList<InternalDeathRecipient>(); |
| for (int i = 0; i < size; ++i) { |
| final InternalDeathRecipient tempRecipient = mListeners.get(i); |
| if(tempRecipient.hasSpellCheckerListener(listener)) { |
| if (DBG) { |
| Slog.w(TAG, "found existing listener."); |
| } |
| removeList.add(tempRecipient); |
| } |
| } |
| final int removeSize = removeList.size(); |
| for (int i = 0; i < removeSize; ++i) { |
| if (DBG) { |
| Slog.w(TAG, "Remove " + removeList.get(i)); |
| } |
| mListeners.remove(removeList.get(i)); |
| } |
| cleanLocked(); |
| } |
| } |
| |
| private void cleanLocked() { |
| if (DBG) { |
| Slog.d(TAG, "cleanLocked"); |
| } |
| if (mListeners.isEmpty()) { |
| if (mSpellCheckerBindGroups.containsKey(this)) { |
| mSpellCheckerBindGroups.remove(this); |
| } |
| // Unbind service when there is no active clients. |
| mContext.unbindService(mInternalConnection); |
| } |
| } |
| |
| public void removeAll() { |
| Slog.e(TAG, "Remove the spell checker bind unexpectedly."); |
| synchronized(mSpellCheckerMap) { |
| mListeners.clear(); |
| cleanLocked(); |
| } |
| } |
| } |
| |
| private class InternalServiceConnection implements ServiceConnection { |
| private final ISpellCheckerSessionListener mListener; |
| private final String mSciId; |
| private final String mLocale; |
| private final Bundle mBundle; |
| public InternalServiceConnection( |
| String id, String locale, ISpellCheckerSessionListener listener, Bundle bundle) { |
| mSciId = id; |
| mLocale = locale; |
| mListener = listener; |
| mBundle = bundle; |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| synchronized(mSpellCheckerMap) { |
| if (DBG) { |
| Slog.w(TAG, "onServiceConnected: " + name); |
| } |
| ISpellCheckerService spellChecker = ISpellCheckerService.Stub.asInterface(service); |
| final SpellCheckerBindGroup group = mSpellCheckerBindGroups.get(mSciId); |
| if (group != null) { |
| group.onServiceConnected(spellChecker); |
| } |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| mSpellCheckerBindGroups.remove(mSciId); |
| } |
| } |
| |
| private class InternalDeathRecipient implements IBinder.DeathRecipient { |
| public final ITextServicesSessionListener mTsListener; |
| public final ISpellCheckerSessionListener mScListener; |
| public final String mScLocale; |
| private final SpellCheckerBindGroup mGroup; |
| public final int mUid; |
| public final Bundle mBundle; |
| public InternalDeathRecipient(SpellCheckerBindGroup group, |
| ITextServicesSessionListener tsListener, String scLocale, |
| ISpellCheckerSessionListener scListener, int uid, Bundle bundle) { |
| mTsListener = tsListener; |
| mScListener = scListener; |
| mScLocale = scLocale; |
| mGroup = group; |
| mUid = uid; |
| mBundle = bundle; |
| } |
| |
| public boolean hasSpellCheckerListener(ISpellCheckerSessionListener listener) { |
| return listener.asBinder().equals(mScListener.asBinder()); |
| } |
| |
| @Override |
| public void binderDied() { |
| mGroup.removeListener(mScListener); |
| } |
| } |
| } |