/*
* 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.annotations.GuardedBy;
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.app.ActivityManagerNative;
import android.app.AppGlobals;
import android.app.IUserSwitchObserver;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.content.pm.UserInfo;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.os.IRemoteCallback;
import android.os.Process;
import android.os.RemoteException;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import android.service.textservice.SpellCheckerService;
import android.text.TextUtils;
import android.util.Slog;
import android.view.inputmethod.InputMethodManager;
import android.view.inputmethod.InputMethodSubtype;
import android.view.textservice.SpellCheckerInfo;
import android.view.textservice.SpellCheckerSubtype;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
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>();
private final TextServicesSettings mSettings;
public void systemRunning() {
if (!mSystemReady) {
mSystemReady = true;
}
}
public TextServicesManagerService(Context context) {
mSystemReady = false;
mContext = context;
final IntentFilter broadcastFilter = new IntentFilter();
broadcastFilter.addAction(Intent.ACTION_USER_ADDED);
broadcastFilter.addAction(Intent.ACTION_USER_REMOVED);
mContext.registerReceiver(new TextServicesBroadcastReceiver(), broadcastFilter);
int userId = UserHandle.USER_OWNER;
try {
ActivityManagerNative.getDefault().registerUserSwitchObserver(
new IUserSwitchObserver.Stub() {
@Override
public void onUserSwitching(int newUserId, IRemoteCallback reply) {
synchronized(mSpellCheckerMap) {
switchUserLocked(newUserId);
}
if (reply != null) {
try {
reply.sendResult(null);
} catch (RemoteException e) {
}
}
}
@Override
public void onUserSwitchComplete(int newUserId) throws RemoteException {
}
});
userId = ActivityManagerNative.getDefault().getCurrentUser().id;
} catch (RemoteException e) {
Slog.w(TAG, "Couldn't get current user ID; guessing it's 0", e);
}
mMonitor = new TextServicesMonitor();
mMonitor.register(context, null, true);
mSettings = new TextServicesSettings(context.getContentResolver(), userId);
// "switchUserLocked" initializes the states for the foreground user
switchUserLocked(userId);
}
private void switchUserLocked(int userId) {
mSettings.setCurrentUserId(userId);
updateCurrentProfileIds();
unbindServiceLocked();
buildSpellCheckerMapLocked(mContext, mSpellCheckerList, mSpellCheckerMap, mSettings);
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());
}
}
}
void updateCurrentProfileIds() {
List<UserInfo> profiles =
UserManager.get(mContext).getProfiles(mSettings.getCurrentUserId());
int[] currentProfileIds = new int[profiles.size()]; // profiles will not be null
for (int i = 0; i < currentProfileIds.length; i++) {
currentProfileIds[i] = profiles.get(i).id;
}
mSettings.setCurrentProfileIds(currentProfileIds);
}
private class TextServicesMonitor extends PackageMonitor {
private boolean isChangingPackagesOfCurrentUser() {
final int userId = getChangingUserId();
final boolean retval = userId == mSettings.getCurrentUserId();
if (DBG) {
Slog.d(TAG, "--- ignore this call back from a background user: " + userId);
}
return retval;
}
@Override
public void onSomePackagesChanged() {
if (!isChangingPackagesOfCurrentUser()) {
return;
}
synchronized (mSpellCheckerMap) {
buildSpellCheckerMapLocked(
mContext, mSpellCheckerList, mSpellCheckerMap, mSettings);
// TODO: Update for each locale
SpellCheckerInfo sci = getCurrentSpellChecker(null);
// If no spell checker is enabled, just return. The user should explicitly
// enable the spell checker.
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());
}
}
}
}
}
class TextServicesBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (Intent.ACTION_USER_ADDED.equals(action)
|| Intent.ACTION_USER_REMOVED.equals(action)) {
updateCurrentProfileIds();
return;
}
Slog.w(TAG, "Unexpected intent " + intent);
}
}
private static void buildSpellCheckerMapLocked(Context context,
ArrayList<SpellCheckerInfo> list, HashMap<String, SpellCheckerInfo> map,
TextServicesSettings settings) {
list.clear();
map.clear();
final PackageManager pm = context.getPackageManager();
final List<ResolveInfo> services = pm.queryIntentServicesAsUser(
new Intent(SpellCheckerService.SERVICE_INTERFACE), PackageManager.GET_META_DATA,
settings.getCurrentUserId());
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);
if (sci.getSubtypeCount() <= 0) {
Slog.w(TAG, "Skipping text service " + compName
+ ": it does not contain subtypes.");
continue;
}
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());
}
}
// ---------------------------------------------------------------------------------------
// Check whether or not this is a valid IPC. Assumes an IPC is valid when either
// 1) it comes from the system process
// 2) the calling process' user id is identical to the current user id TSMS thinks.
private boolean calledFromValidUser() {
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserId(uid);
if (DBG) {
Slog.d(TAG, "--- calledFromForegroundUserOrSystemProcess ? "
+ "calling uid = " + uid + " system uid = " + Process.SYSTEM_UID
+ " calling userId = " + userId + ", foreground user id = "
+ mSettings.getCurrentUserId() + ", calling pid = " + Binder.getCallingPid());
try {
final String[] packageNames = AppGlobals.getPackageManager().getPackagesForUid(uid);
for (int i = 0; i < packageNames.length; ++i) {
if (DBG) {
Slog.d(TAG, "--- process name for "+ uid + " = " + packageNames[i]);
}
}
} catch (RemoteException e) {
}
}
if (uid == Process.SYSTEM_UID || userId == mSettings.getCurrentUserId()) {
return true;
}
// Permits current profile to use TSFM as long as the current text service is the system's
// one. This is a tentative solution and should be replaced with fully functional multiuser
// support.
// TODO: Implement multiuser support in TSMS.
final boolean isCurrentProfile = mSettings.isCurrentProfile(userId);
if (DBG) {
Slog.d(TAG, "--- userId = "+ userId + " isCurrentProfile = " + isCurrentProfile);
}
if (mSettings.isCurrentProfile(userId)) {
final SpellCheckerInfo spellCheckerInfo = getCurrentSpellCheckerWithoutVerification();
if (spellCheckerInfo != null) {
final ServiceInfo serviceInfo = spellCheckerInfo.getServiceInfo();
final boolean isSystemSpellChecker =
(serviceInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
if (DBG) {
Slog.d(TAG, "--- current spell checker = "+ spellCheckerInfo.getPackageName()
+ " isSystem = " + isSystemSpellChecker);
}
if (isSystemSpellChecker) {
return true;
}
}
}
// Unlike InputMethodManagerService#calledFromValidUser, INTERACT_ACROSS_USERS_FULL isn't
// taken into account here. Anyway this method is supposed to be removed once multiuser
// support is implemented.
if (DBG) {
Slog.d(TAG, "--- IPC from userId:" + userId + " is being ignored. \n"
+ getStackTrace());
}
return false;
}
private boolean bindCurrentSpellCheckerService(
Intent service, ServiceConnection conn, int flags) {
if (service == null || conn == null) {
Slog.e(TAG, "--- bind failed: service = " + service + ", conn = " + conn);
return false;
}
return mContext.bindServiceAsUser(service, conn, flags,
new UserHandle(mSettings.getCurrentUserId()));
}
private void unbindServiceLocked() {
for (SpellCheckerBindGroup scbg : mSpellCheckerBindGroups.values()) {
scbg.removeAll();
}
mSpellCheckerBindGroups.clear();
}
// 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) {
// TODO: Make this work even for non-current users?
if (!calledFromValidUser()) {
return null;
}
return getCurrentSpellCheckerWithoutVerification();
}
private SpellCheckerInfo getCurrentSpellCheckerWithoutVerification() {
synchronized (mSpellCheckerMap) {
final String curSpellCheckerId = mSettings.getSelectedSpellChecker();
if (DBG) {
Slog.w(TAG, "getCurrentSpellChecker: " + curSpellCheckerId);
}
if (TextUtils.isEmpty(curSpellCheckerId)) {
return null;
}
return mSpellCheckerMap.get(curSpellCheckerId);
}
}
// TODO: Respect allowImplicitlySelectedSubtype
// TODO: Save SpellCheckerSubtype by supported languages by looking at "locale".
@Override
public SpellCheckerSubtype getCurrentSpellCheckerSubtype(
String locale, boolean allowImplicitlySelectedSubtype) {
// TODO: Make this work even for non-current users?
if (!calledFromValidUser()) {
return null;
}
synchronized (mSpellCheckerMap) {
final String subtypeHashCodeStr = mSettings.getSelectedSpellCheckerSubtype();
if (DBG) {
Slog.w(TAG, "getCurrentSpellCheckerSubtype: " + subtypeHashCodeStr);
}
final SpellCheckerInfo sci = getCurrentSpellChecker(null);
if (sci == null || sci.getSubtypeCount() == 0) {
if (DBG) {
Slog.w(TAG, "Subtype not found.");
}
return null;
}
final int hashCode;
if (!TextUtils.isEmpty(subtypeHashCodeStr)) {
hashCode = Integer.valueOf(subtypeHashCodeStr);
} else {
hashCode = 0;
}
if (hashCode == 0 && !allowImplicitlySelectedSubtype) {
return null;
}
String candidateLocale = null;
if (hashCode == 0) {
// Spell checker language settings == "auto"
final InputMethodManager imm =
(InputMethodManager)mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
if (imm != null) {
final InputMethodSubtype currentInputMethodSubtype =
imm.getCurrentInputMethodSubtype();
if (currentInputMethodSubtype != null) {
final String localeString = currentInputMethodSubtype.getLocale();
if (!TextUtils.isEmpty(localeString)) {
// 1. Use keyboard locale if available in the spell checker
candidateLocale = localeString;
}
}
}
if (candidateLocale == null) {
// 2. Use System locale if available in the spell checker
candidateLocale = mContext.getResources().getConfiguration().locale.toString();
}
}
SpellCheckerSubtype candidate = null;
for (int i = 0; i < sci.getSubtypeCount(); ++i) {
final SpellCheckerSubtype scs = sci.getSubtypeAt(i);
if (hashCode == 0) {
final String scsLocale = scs.getLocale();
if (candidateLocale.equals(scsLocale)) {
return scs;
} else if (candidate == null) {
if (candidateLocale.length() >= 2 && scsLocale.length() >= 2
&& candidateLocale.startsWith(scsLocale)) {
// Fall back to the applicable language
candidate = scs;
}
}
} else if (scs.hashCode() == hashCode) {
if (DBG) {
Slog.w(TAG, "Return subtype " + scs.hashCode() + ", input= " + locale
+ ", " + scs.getLocale());
}
// 3. Use the user specified spell check language
return scs;
}
}
// 4. Fall back to the applicable language and return it if not null
// 5. Simply just return it even if it's null which means we could find no suitable
// spell check languages
return candidate;
}
}
@Override
public void getSpellCheckerService(String sciId, String locale,
ITextServicesSessionListener tsListener, ISpellCheckerSessionListener scListener,
Bundle bundle) {
if (!calledFromValidUser()) {
return;
}
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;
}
@Override
public boolean isSpellCheckerEnabled() {
if (!calledFromValidUser()) {
return false;
}
synchronized(mSpellCheckerMap) {
return isSpellCheckerEnabledLocked();
}
}
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, bundle);
final Intent serviceIntent = new Intent(SpellCheckerService.SERVICE_INTERFACE);
serviceIntent.setComponent(info.getComponent());
if (DBG) {
Slog.w(TAG, "bind service: " + info.getId());
}
if (!bindCurrentSpellCheckerService(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() {
// TODO: Make this work even for non-current users?
if (!calledFromValidUser()) {
return null;
}
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 (!calledFromValidUser()) {
return;
}
if (DBG) {
Slog.d(TAG, "FinishSpellCheckerService");
}
synchronized(mSpellCheckerMap) {
final ArrayList<SpellCheckerBindGroup> removeList =
new ArrayList<SpellCheckerBindGroup>();
for (SpellCheckerBindGroup group : mSpellCheckerBindGroups.values()) {
if (group == null) continue;
// Use removeList to avoid modifying mSpellCheckerBindGroups in this loop.
removeList.add(group);
}
final int removeSize = removeList.size();
for (int i = 0; i < removeSize; ++i) {
removeList.get(i).removeListener(listener);
}
}
}
@Override
public void setCurrentSpellChecker(String locale, String sciId) {
if (!calledFromValidUser()) {
return;
}
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) {
if (!calledFromValidUser()) {
return;
}
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);
}
setCurrentSpellCheckerSubtypeLocked(hashCode);
}
}
@Override
public void setSpellCheckerEnabled(boolean enabled) {
if (!calledFromValidUser()) {
return;
}
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);
}
setSpellCheckerEnabledLocked(enabled);
}
}
private void setCurrentSpellCheckerLocked(String sciId) {
if (DBG) {
Slog.w(TAG, "setCurrentSpellChecker: " + sciId);
}
if (TextUtils.isEmpty(sciId) || !mSpellCheckerMap.containsKey(sciId)) return;
final SpellCheckerInfo currentSci = getCurrentSpellChecker(null);
if (currentSci != null && currentSci.getId().equals(sciId)) {
// Do nothing if the current spell checker is same as new spell checker.
return;
}
final long ident = Binder.clearCallingIdentity();
try {
mSettings.putSelectedSpellChecker(sciId);
setCurrentSpellCheckerSubtypeLocked(0);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setCurrentSpellCheckerSubtypeLocked(int hashCode) {
if (DBG) {
Slog.w(TAG, "setCurrentSpellCheckerSubtype: " + hashCode);
}
final SpellCheckerInfo sci = getCurrentSpellChecker(null);
int tempHashCode = 0;
for (int i = 0; sci != null && i < sci.getSubtypeCount(); ++i) {
if(sci.getSubtypeAt(i).hashCode() == hashCode) {
tempHashCode = hashCode;
break;
}
}
final long ident = Binder.clearCallingIdentity();
try {
mSettings.putSelectedSpellCheckerSubtype(tempHashCode);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setSpellCheckerEnabledLocked(boolean enabled) {
if (DBG) {
Slog.w(TAG, "setSpellCheckerEnabled: " + enabled);
}
final long ident = Binder.clearCallingIdentity();
try {
mSettings.setSpellCheckerEnabled(enabled);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private boolean isSpellCheckerEnabledLocked() {
final long ident = Binder.clearCallingIdentity();
try {
final boolean retval = mSettings.isSpellCheckerEnabled();
if (DBG) {
Slog.w(TAG, "getSpellCheckerEnabled: " + retval);
}
return retval;
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
!= PackageManager.PERMISSION_GRANTED) {
pw.println("Permission Denial: can't dump TextServicesManagerService from from pid="
+ Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid());
return;
}
synchronized(mSpellCheckerMap) {
pw.println("Current Text Services Manager state:");
pw.println(" Spell Checker Map:");
for (Map.Entry<String, SpellCheckerInfo> ent : mSpellCheckerMap.entrySet()) {
pw.print(" "); pw.print(ent.getKey()); pw.println(":");
SpellCheckerInfo info = ent.getValue();
pw.print(" "); pw.print("id="); pw.println(info.getId());
pw.print(" "); pw.print("comp=");
pw.println(info.getComponent().toShortString());
int NS = info.getSubtypeCount();
for (int i=0; i<NS; i++) {
SpellCheckerSubtype st = info.getSubtypeAt(i);
pw.print(" "); pw.print("Subtype #"); pw.print(i); pw.println(":");
pw.print(" "); pw.print("locale="); pw.println(st.getLocale());
pw.print(" "); pw.print("extraValue=");
pw.println(st.getExtraValue());
}
}
pw.println("");
pw.println(" Spell Checker Bind Groups:");
for (Map.Entry<String, SpellCheckerBindGroup> ent
: mSpellCheckerBindGroups.entrySet()) {
SpellCheckerBindGroup grp = ent.getValue();
pw.print(" "); pw.print(ent.getKey()); pw.print(" ");
pw.print(grp); pw.println(":");
pw.print(" "); pw.print("mInternalConnection=");
pw.println(grp.mInternalConnection);
pw.print(" "); pw.print("mSpellChecker=");
pw.println(grp.mSpellChecker);
pw.print(" "); pw.print("mBound="); pw.print(grp.mBound);
pw.print(" mConnected="); pw.println(grp.mConnected);
int NL = grp.mListeners.size();
for (int i=0; i<NL; i++) {
InternalDeathRecipient listener = grp.mListeners.get(i);
pw.print(" "); pw.print("Listener #"); pw.print(i); pw.println(":");
pw.print(" "); pw.print("mTsListener=");
pw.println(listener.mTsListener);
pw.print(" "); pw.print("mScListener=");
pw.println(listener.mScListener);
pw.print(" "); pw.print("mGroup=");
pw.println(listener.mGroup);
pw.print(" "); pw.print("mScLocale=");
pw.print(listener.mScLocale);
pw.print(" mUid="); pw.println(listener.mUid);
}
}
}
}
// 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 CopyOnWriteArrayList<InternalDeathRecipient> mListeners =
new CopyOnWriteArrayList<InternalDeathRecipient>();
public boolean mBound;
public ISpellCheckerService mSpellChecker;
public boolean mConnected;
public SpellCheckerBindGroup(InternalServiceConnection connection,
ITextServicesSessionListener listener, String locale,
ISpellCheckerSessionListener scListener, int uid, Bundle bundle) {
mInternalConnection = connection;
mBound = true;
mConnected = false;
addListener(listener, locale, scListener, uid, bundle);
}
public void onServiceConnected(ISpellCheckerService spellChecker) {
if (DBG) {
Slog.d(TAG, "onServiceConnected");
}
for (InternalDeathRecipient listener : mListeners) {
try {
final ISpellCheckerSession session = spellChecker.getISpellCheckerSession(
listener.mScLocale, listener.mScListener, listener.mBundle);
synchronized(mSpellCheckerMap) {
if (mListeners.contains(listener)) {
listener.mTsListener.onServiceConnected(session);
}
}
} catch (RemoteException e) {
Slog.e(TAG, "Exception in getting the spell checker session."
+ "Reconnect to the spellchecker. ", e);
removeAll();
return;
}
}
synchronized(mSpellCheckerMap) {
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));
}
final InternalDeathRecipient idr = removeList.get(i);
idr.mScListener.asBinder().unlinkToDeath(idr, 0);
mListeners.remove(idr);
}
cleanLocked();
}
}
// cleanLocked may remove elements from mSpellCheckerBindGroups
private void cleanLocked() {
if (DBG) {
Slog.d(TAG, "cleanLocked");
}
// If there are no more active listeners, clean up. Only do this
// once.
if (mBound && mListeners.isEmpty()) {
mBound = false;
final String sciId = mInternalConnection.mSciId;
SpellCheckerBindGroup cur = mSpellCheckerBindGroups.get(sciId);
if (cur == this) {
if (DBG) {
Slog.d(TAG, "Remove bind group.");
}
mSpellCheckerBindGroups.remove(sciId);
}
mContext.unbindService(mInternalConnection);
}
}
public void removeAll() {
Slog.e(TAG, "Remove the spell checker bind unexpectedly.");
synchronized(mSpellCheckerMap) {
final int size = mListeners.size();
for (int i = 0; i < size; ++i) {
final InternalDeathRecipient idr = mListeners.get(i);
idr.mScListener.asBinder().unlinkToDeath(idr, 0);
}
mListeners.clear();
cleanLocked();
}
}
}
private class InternalServiceConnection implements ServiceConnection {
private final String mSciId;
private final String mLocale;
private final Bundle mBundle;
public InternalServiceConnection(
String id, String locale, Bundle bundle) {
mSciId = id;
mLocale = locale;
mBundle = bundle;
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
synchronized(mSpellCheckerMap) {
onServiceConnectedInnerLocked(name, service);
}
}
private void onServiceConnectedInnerLocked(ComponentName name, IBinder service) {
if (DBG) {
Slog.w(TAG, "onServiceConnected: " + name);
}
final ISpellCheckerService spellChecker =
ISpellCheckerService.Stub.asInterface(service);
final SpellCheckerBindGroup group = mSpellCheckerBindGroups.get(mSciId);
if (group != null && this == group.mInternalConnection) {
group.onServiceConnected(spellChecker);
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
synchronized(mSpellCheckerMap) {
final SpellCheckerBindGroup group = mSpellCheckerBindGroups.get(mSciId);
if (group != null && this == group.mInternalConnection) {
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);
}
}
private static class TextServicesSettings {
private final ContentResolver mResolver;
private int mCurrentUserId;
@GuardedBy("mLock")
private int[] mCurrentProfileIds = new int[0];
private Object mLock = new Object();
public TextServicesSettings(ContentResolver resolver, int userId) {
mResolver = resolver;
mCurrentUserId = userId;
}
public void setCurrentUserId(int userId) {
if (DBG) {
Slog.d(TAG, "--- Swtich the current user from " + mCurrentUserId + " to "
+ userId + ", new ime = " + getSelectedSpellChecker());
}
// TSMS settings are kept per user, so keep track of current user
mCurrentUserId = userId;
}
public void setCurrentProfileIds(int[] currentProfileIds) {
synchronized (mLock) {
mCurrentProfileIds = currentProfileIds;
}
}
public boolean isCurrentProfile(int userId) {
synchronized (mLock) {
if (userId == mCurrentUserId) return true;
for (int i = 0; i < mCurrentProfileIds.length; i++) {
if (userId == mCurrentProfileIds[i]) return true;
}
return false;
}
}
public int getCurrentUserId() {
return mCurrentUserId;
}
public void putSelectedSpellChecker(String sciId) {
Settings.Secure.putStringForUser(mResolver,
Settings.Secure.SELECTED_SPELL_CHECKER, sciId, mCurrentUserId);
}
public void putSelectedSpellCheckerSubtype(int hashCode) {
Settings.Secure.putStringForUser(mResolver,
Settings.Secure.SELECTED_SPELL_CHECKER_SUBTYPE, String.valueOf(hashCode),
mCurrentUserId);
}
public void setSpellCheckerEnabled(boolean enabled) {
Settings.Secure.putIntForUser(mResolver,
Settings.Secure.SPELL_CHECKER_ENABLED, enabled ? 1 : 0, mCurrentUserId);
}
public String getSelectedSpellChecker() {
return Settings.Secure.getStringForUser(mResolver,
Settings.Secure.SELECTED_SPELL_CHECKER, mCurrentUserId);
}
public String getSelectedSpellCheckerSubtype() {
return Settings.Secure.getStringForUser(mResolver,
Settings.Secure.SELECTED_SPELL_CHECKER_SUBTYPE, mCurrentUserId);
}
public boolean isSpellCheckerEnabled() {
return Settings.Secure.getIntForUser(mResolver,
Settings.Secure.SPELL_CHECKER_ENABLED, 1, mCurrentUserId) == 1;
}
}
// ----------------------------------------------------------------------
// Utilities for debug
private static String getStackTrace() {
final StringBuilder sb = new StringBuilder();
try {
throw new RuntimeException();
} catch (RuntimeException e) {
final StackTraceElement[] frames = e.getStackTrace();
// Start at 1 because the first frame is here and we don't care about it
for (int j = 1; j < frames.length; ++j) {
sb.append(frames[j].toString() + "\n");
}
}
return sb.toString();
}
}
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