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/*
* Copyright (C) 2014 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.settings.voice;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.content.res.XmlResourceParser;
import android.provider.Settings;
import android.service.voice.VoiceInteractionService;
import android.service.voice.VoiceInteractionServiceInfo;
import android.speech.RecognitionService;
import android.util.ArraySet;
import android.util.AttributeSet;
import android.util.Log;
import android.util.Xml;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public final class VoiceInputHelper {
static final String TAG = "VoiceInputHelper";
final Context mContext;
final List<ResolveInfo> mAvailableVoiceInteractions;
final List<ResolveInfo> mAvailableRecognition;
static public class BaseInfo implements Comparable {
public final ServiceInfo service;
public final ComponentName componentName;
public final String key;
public final ComponentName settings;
public final CharSequence label;
public final String labelStr;
public final CharSequence appLabel;
public BaseInfo(PackageManager pm, ServiceInfo _service, String _settings) {
service = _service;
componentName = new ComponentName(_service.packageName, _service.name);
key = componentName.flattenToShortString();
settings = _settings != null
? new ComponentName(_service.packageName, _settings) : null;
label = _service.loadLabel(pm);
labelStr = label.toString();
appLabel = _service.applicationInfo.loadLabel(pm);
}
@Override
public int compareTo(Object another) {
return labelStr.compareTo(((BaseInfo)another).labelStr);
}
}
static public class InteractionInfo extends BaseInfo {
public final VoiceInteractionServiceInfo serviceInfo;
public InteractionInfo(PackageManager pm, VoiceInteractionServiceInfo _service) {
super(pm, _service.getServiceInfo(), _service.getSettingsActivity());
serviceInfo = _service;
}
}
static public class RecognizerInfo extends BaseInfo {
public RecognizerInfo(PackageManager pm, ServiceInfo _service, String _settings) {
super(pm, _service, _settings);
}
}
final ArrayList<InteractionInfo> mAvailableInteractionInfos = new ArrayList<>();
final ArrayList<RecognizerInfo> mAvailableRecognizerInfos = new ArrayList<>();
ComponentName mCurrentVoiceInteraction;
ComponentName mCurrentRecognizer;
public VoiceInputHelper(Context context) {
mContext = context;
mAvailableVoiceInteractions = mContext.getPackageManager().queryIntentServices(
new Intent(VoiceInteractionService.SERVICE_INTERFACE),
PackageManager.GET_META_DATA);
mAvailableRecognition = mContext.getPackageManager().queryIntentServices(
new Intent(RecognitionService.SERVICE_INTERFACE),
PackageManager.GET_META_DATA);
}
public boolean hasItems() {
return mAvailableVoiceInteractions.size() > 0 || mAvailableRecognition.size() > 0;
}
public void buildUi() {
// Get the currently selected interactor from the secure setting.
String currentSetting = Settings.Secure.getString(
mContext.getContentResolver(), Settings.Secure.VOICE_INTERACTION_SERVICE);
if (currentSetting != null && !currentSetting.isEmpty()) {
mCurrentVoiceInteraction = ComponentName.unflattenFromString(currentSetting);
} else {
mCurrentVoiceInteraction = null;
}
ArraySet<ComponentName> interactorRecognizers = new ArraySet<>();
// Iterate through all the available interactors and load up their info to show
// in the preference.
int size = mAvailableVoiceInteractions.size();
for (int i = 0; i < size; i++) {
ResolveInfo resolveInfo = mAvailableVoiceInteractions.get(i);
VoiceInteractionServiceInfo info = new VoiceInteractionServiceInfo(
mContext.getPackageManager(), resolveInfo.serviceInfo);
if (info.getParseError() != null) {
Log.w("VoiceInteractionService", "Error in VoiceInteractionService "
+ resolveInfo.serviceInfo.packageName + "/"
+ resolveInfo.serviceInfo.name + ": " + info.getParseError());
continue;
}
mAvailableInteractionInfos.add(new InteractionInfo(mContext.getPackageManager(), info));
if (info.getRecognitionService() != null) {
interactorRecognizers.add(new ComponentName(resolveInfo.serviceInfo.packageName,
info.getRecognitionService()));
}
}
Collections.sort(mAvailableInteractionInfos);
// Get the currently selected recognizer from the secure setting.
currentSetting = Settings.Secure.getString(
mContext.getContentResolver(), Settings.Secure.VOICE_RECOGNITION_SERVICE);
if (currentSetting != null && !currentSetting.isEmpty()) {
mCurrentRecognizer = ComponentName.unflattenFromString(currentSetting);
} else {
mCurrentRecognizer = null;
}
// Iterate through all the available recognizers and load up their info to show
// in the preference.
size = mAvailableRecognition.size();
for (int i = 0; i < size; i++) {
ResolveInfo resolveInfo = mAvailableRecognition.get(i);
ComponentName comp = new ComponentName(resolveInfo.serviceInfo.packageName,
resolveInfo.serviceInfo.name);
if (interactorRecognizers.contains(comp)) {
//continue;
}
ServiceInfo si = resolveInfo.serviceInfo;
XmlResourceParser parser = null;
String settingsActivity = null;
try {
parser = si.loadXmlMetaData(mContext.getPackageManager(),
RecognitionService.SERVICE_META_DATA);
if (parser == null) {
throw new XmlPullParserException("No " + RecognitionService.SERVICE_META_DATA +
" meta-data for " + si.packageName);
}
Resources res = mContext.getPackageManager().getResourcesForApplication(
si.applicationInfo);
AttributeSet attrs = Xml.asAttributeSet(parser);
int type;
while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
&& type != XmlPullParser.START_TAG) {
}
String nodeName = parser.getName();
if (!"recognition-service".equals(nodeName)) {
throw new XmlPullParserException(
"Meta-data does not start with recognition-service tag");
}
TypedArray array = res.obtainAttributes(attrs,
com.android.internal.R.styleable.RecognitionService);
settingsActivity = array.getString(
com.android.internal.R.styleable.RecognitionService_settingsActivity);
array.recycle();
} catch (XmlPullParserException e) {
Log.e(TAG, "error parsing recognition service meta-data", e);
} catch (IOException e) {
Log.e(TAG, "error parsing recognition service meta-data", e);
} catch (PackageManager.NameNotFoundException e) {
Log.e(TAG, "error parsing recognition service meta-data", e);
} finally {
if (parser != null) parser.close();
}
mAvailableRecognizerInfos.add(new RecognizerInfo(mContext.getPackageManager(),
resolveInfo.serviceInfo, settingsActivity));
}
Collections.sort(mAvailableRecognizerInfos);
}
}
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