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/*
* 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.view.ITextServiceManager;
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.view.inputmethod.InputMethodInfo;
import android.view.inputmethod.SpellCheckerInfo;
import android.view.inputmethod.SpellCheckerService;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Slog;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class TextServiceManagerService extends ITextServiceManager.Stub {
private static final String TAG = TextServiceManagerService.class.getSimpleName();
private static final boolean DBG = false;
private final Context mContext;
private boolean mSystemReady;
private final TextServiceMonitor mMonitor;
private final HashMap<String, SpellCheckerInfo> mSpellCheckerMap =
new HashMap<String, SpellCheckerInfo>();
private final ArrayList<SpellCheckerInfo> mSpellCheckerList = new ArrayList<SpellCheckerInfo>();
public void systemReady() {
if (!mSystemReady) {
mSystemReady = true;
}
}
public TextServiceManagerService(Context context) {
mSystemReady = false;
mContext = context;
mMonitor = new TextServiceMonitor();
mMonitor.register(context, true);
synchronized (mSpellCheckerMap) {
buildSpellCheckerMapLocked(context, mSpellCheckerList, mSpellCheckerMap);
}
}
private class TextServiceMonitor extends PackageMonitor {
@Override
public void onSomePackagesChanged() {
synchronized (mSpellCheckerMap) {
buildSpellCheckerMapLocked(mContext, mSpellCheckerList, mSpellCheckerMap);
// TODO: Update for each locale
final SpellCheckerInfo sci = getCurrentSpellChecker(null);
final String packageName = sci.getPackageName();
final int change = isPackageDisappearing(packageName);
if (change == PACKAGE_PERMANENT_CHANGE || change == PACKAGE_TEMPORARY_CHANGE) {
// Package disappearing
setCurSpellChecker(findAvailSpellCheckerLocked(null, packageName));
} else if (isPackageModified(packageName)) {
// Package modified
setCurSpellChecker(findAvailSpellCheckerLocked(null, packageName));
}
}
}
}
// Not used for now
private SpellCheckerInfo getAppearedPackageLocked(Context context, PackageMonitor monitor) {
final int N = mSpellCheckerList.size();
for (int i = 0; i < N; ++i) {
final SpellCheckerInfo sci = mSpellCheckerList.get(i);
String packageName = sci.getPackageName();
if (monitor.isPackageAppearing(packageName)
== PackageMonitor.PACKAGE_PERMANENT_CHANGE) {
return sci;
}
}
return null;
}
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);
final SpellCheckerInfo sci = new SpellCheckerInfo(context, ri);
list.add(sci);
map.put(sci.getId(), sci);
}
}
// 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())) {
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) {
final String curSpellCheckerId =
Settings.Secure.getString(mContext.getContentResolver(),
Settings.Secure.SPELL_CHECKER_SERVICE);
if (TextUtils.isEmpty(curSpellCheckerId)) {
return null;
}
return mSpellCheckerMap.get(curSpellCheckerId);
}
}
private void setCurSpellChecker(SpellCheckerInfo sci) {
Settings.Secure.putString(mContext.getContentResolver(),
Settings.Secure.SPELL_CHECKER_SERVICE, sci == null ? "" : sci.getId());
}
}
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