1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settings.voice;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.Intent;
22import android.content.pm.PackageManager;
23import android.content.pm.ResolveInfo;
24import android.content.pm.ServiceInfo;
25import android.preference.Preference;
26import android.provider.Settings;
27import android.service.voice.VoiceInteractionService;
28import android.service.voice.VoiceInteractionServiceInfo;
29import android.speech.RecognitionService;
30import com.android.settings.R;
31import com.android.settings.SettingsPreferenceFragment;
32import com.android.settings.search.BaseSearchIndexProvider;
33import com.android.settings.search.Indexable;
34import com.android.settings.search.SearchIndexableRaw;
35import com.android.settings.voice.VoiceInputPreference.RadioButtonGroupState;
36
37import android.os.Bundle;
38import android.preference.PreferenceCategory;
39import android.widget.Checkable;
40
41import java.util.ArrayList;
42import java.util.List;
43
44public class VoiceInputSettings extends SettingsPreferenceFragment implements
45        Preference.OnPreferenceClickListener, RadioButtonGroupState, Indexable {
46
47    private static final String TAG = "VoiceInputSettings";
48    private static final boolean DBG = false;
49
50    /**
51     * Preference key for the engine selection preference.
52     */
53    private static final String KEY_SERVICE_PREFERENCE_SECTION =
54            "voice_service_preference_section";
55
56    private PreferenceCategory mServicePreferenceCategory;
57
58    private CharSequence mInteractorSummary;
59    private CharSequence mRecognizerSummary;
60    private CharSequence mInteractorWarning;
61
62    /**
63     * The currently selected engine.
64     */
65    private String mCurrentKey;
66
67    /**
68     * The engine checkbox that is currently checked. Saves us a bit of effort
69     * in deducing the right one from the currently selected engine.
70     */
71    private Checkable mCurrentChecked;
72
73    private VoiceInputHelper mHelper;
74
75    @Override
76    public void onCreate(Bundle savedInstanceState) {
77        super.onCreate(savedInstanceState);
78        addPreferencesFromResource(R.xml.voice_input_settings);
79
80        mServicePreferenceCategory = (PreferenceCategory) findPreference(
81                KEY_SERVICE_PREFERENCE_SECTION);
82
83        mInteractorSummary = getActivity().getText(
84                R.string.voice_interactor_preference_summary);
85        mRecognizerSummary = getActivity().getText(
86                R.string.voice_recognizer_preference_summary);
87        mInteractorWarning = getActivity().getText(R.string.voice_interaction_security_warning);
88    }
89
90    @Override
91    public void onStart() {
92        super.onStart();
93        initSettings();
94    }
95
96    private void initSettings() {
97        mHelper = new VoiceInputHelper(getActivity());
98        mHelper.buildUi();
99
100        mServicePreferenceCategory.removeAll();
101
102        if (mHelper.mCurrentVoiceInteraction != null) {
103            mCurrentKey = mHelper.mCurrentVoiceInteraction.flattenToShortString();
104        } else if (mHelper.mCurrentRecognizer != null) {
105            mCurrentKey = mHelper.mCurrentRecognizer.flattenToShortString();
106        } else {
107            mCurrentKey = null;
108        }
109
110        for (int i=0; i<mHelper.mAvailableInteractionInfos.size(); i++) {
111            VoiceInputHelper.InteractionInfo info = mHelper.mAvailableInteractionInfos.get(i);
112            VoiceInputPreference pref = new VoiceInputPreference(getActivity(), info,
113                    mInteractorSummary, mInteractorWarning, this);
114            mServicePreferenceCategory.addPreference(pref);
115        }
116
117        for (int i=0; i<mHelper.mAvailableRecognizerInfos.size(); i++) {
118            VoiceInputHelper.RecognizerInfo info = mHelper.mAvailableRecognizerInfos.get(i);
119            VoiceInputPreference pref = new VoiceInputPreference(getActivity(), info,
120                    mRecognizerSummary, null, this);
121            mServicePreferenceCategory.addPreference(pref);
122        }
123    }
124
125    @Override
126    public Checkable getCurrentChecked() {
127        return mCurrentChecked;
128    }
129
130    @Override
131    public String getCurrentKey() {
132        return mCurrentKey;
133    }
134
135    @Override
136    public void setCurrentChecked(Checkable current) {
137        mCurrentChecked = current;
138    }
139
140    @Override
141    public void setCurrentKey(String key) {
142        mCurrentKey = key;
143        for (int i=0; i<mHelper.mAvailableInteractionInfos.size(); i++) {
144            VoiceInputHelper.InteractionInfo info = mHelper.mAvailableInteractionInfos.get(i);
145            if (info.key.equals(key)) {
146                // Put the new value back into secure settings.
147                Settings.Secure.putString(getActivity().getContentResolver(),
148                        Settings.Secure.VOICE_INTERACTION_SERVICE, key);
149                // Eventually we will require that an interactor always specify a recognizer
150                if (info.settings != null) {
151                    Settings.Secure.putString(getActivity().getContentResolver(),
152                            Settings.Secure.VOICE_RECOGNITION_SERVICE,
153                            info.settings.flattenToShortString());
154                }
155                return;
156            }
157        }
158
159        for (int i=0; i<mHelper.mAvailableRecognizerInfos.size(); i++) {
160            VoiceInputHelper.RecognizerInfo info = mHelper.mAvailableRecognizerInfos.get(i);
161            if (info.key.equals(key)) {
162                Settings.Secure.putString(getActivity().getContentResolver(),
163                        Settings.Secure.VOICE_INTERACTION_SERVICE, "");
164                Settings.Secure.putString(getActivity().getContentResolver(),
165                        Settings.Secure.VOICE_RECOGNITION_SERVICE, key);
166                return;
167            }
168        }
169    }
170
171    @Override
172    public boolean onPreferenceClick(Preference preference) {
173        if (preference instanceof VoiceInputPreference) {
174            ((VoiceInputPreference)preference).doClick();
175        }
176        return true;
177    }
178
179    // For Search
180    public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
181        new BaseSearchIndexProvider() {
182
183            @Override
184            public List<SearchIndexableRaw> getRawDataToIndex(Context context,
185                    boolean enabled) {
186
187                List<SearchIndexableRaw> indexables = new ArrayList<>();
188
189                final String screenTitle = context.getString(R.string.voice_input_settings_title);
190
191                SearchIndexableRaw indexable = new SearchIndexableRaw(context);
192                indexable.key = "voice_service_preference_section_title";
193                indexable.title = context.getString(R.string.voice_service_preference_section_title);
194                indexable.screenTitle = screenTitle;
195                indexables.add(indexable);
196
197                final List<ResolveInfo> voiceInteractions =
198                        context.getPackageManager().queryIntentServices(
199                                new Intent(VoiceInteractionService.SERVICE_INTERFACE),
200                                PackageManager.GET_META_DATA);
201
202                final int countInteractions = voiceInteractions.size();
203                for (int i = 0; i < countInteractions; i++) {
204                    ResolveInfo info = voiceInteractions.get(i);
205                    VoiceInteractionServiceInfo visInfo = new VoiceInteractionServiceInfo(
206                            context.getPackageManager(), info.serviceInfo);
207                    if (visInfo.getParseError() != null) {
208                        continue;
209                    }
210                    indexables.add(getSearchIndexableRaw(context, info, screenTitle));
211                }
212
213                final List<ResolveInfo> recognitions =
214                        context.getPackageManager().queryIntentServices(
215                                new Intent(RecognitionService.SERVICE_INTERFACE),
216                                PackageManager.GET_META_DATA);
217
218                final int countRecognitions = recognitions.size();
219                for (int i = 0; i < countRecognitions; i++) {
220                    ResolveInfo info = recognitions.get(i);
221                    indexables.add(getSearchIndexableRaw(context, info, screenTitle));
222                }
223
224                return indexables;
225            }
226
227            private SearchIndexableRaw getSearchIndexableRaw(Context context,
228                    ResolveInfo info, String screenTitle) {
229
230                ServiceInfo serviceInfo = info.serviceInfo;
231                ComponentName componentName = new ComponentName(serviceInfo.packageName,
232                        serviceInfo.name);
233
234                SearchIndexableRaw indexable = new SearchIndexableRaw(context);
235                indexable.key = componentName.flattenToString();
236                indexable.title = info.loadLabel(context.getPackageManager()).toString();
237                indexable.screenTitle = screenTitle;
238
239                return indexable;
240            }
241        };
242}
243