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      1 /*
      2  * Copyright (C) 2010 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 package com.android.quicksearchbox;
     17 
     18 import android.app.SearchManager;
     19 import android.content.Context;
     20 import android.content.Intent;
     21 import android.content.pm.ComponentInfo;
     22 import android.content.pm.PackageManager;
     23 import android.content.pm.PackageManager.NameNotFoundException;
     24 import android.content.pm.ResolveInfo;
     25 import android.os.Bundle;
     26 import android.speech.RecognizerIntent;
     27 import android.util.Log;
     28 
     29 /**
     30  * Voice Search integration.
     31  */
     32 public class VoiceSearch {
     33 
     34     private static final String TAG = "QSB.VoiceSearch";
     35 
     36     private final Context mContext;
     37 
     38     public VoiceSearch(Context context) {
     39         mContext = context;
     40     }
     41 
     42     protected Context getContext() {
     43         return mContext;
     44     }
     45 
     46     public boolean shouldShowVoiceSearch(Corpus corpus) {
     47         return corpusSupportsVoiceSearch(corpus) && isVoiceSearchAvailable();
     48     }
     49 
     50     protected boolean corpusSupportsVoiceSearch(Corpus corpus) {
     51         return (corpus == null || corpus.voiceSearchEnabled());
     52     }
     53 
     54     protected Intent createVoiceSearchIntent() {
     55         return new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
     56     }
     57 
     58     private ResolveInfo getResolveInfo() {
     59         Intent intent = createVoiceSearchIntent();
     60         ResolveInfo ri = mContext.getPackageManager().
     61                 resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
     62         return ri;
     63     }
     64 
     65     public boolean isVoiceSearchAvailable() {
     66         return getResolveInfo() != null;
     67     }
     68 
     69     public Intent createVoiceWebSearchIntent(Bundle appData) {
     70         if (!isVoiceSearchAvailable()) return null;
     71         Intent intent = createVoiceSearchIntent();
     72         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     73         intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
     74                 RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
     75         if (appData != null) {
     76             intent.putExtra(SearchManager.APP_DATA, appData);
     77         }
     78         return intent;
     79     }
     80 
     81     /**
     82      * Create an intent to launch the voice search help screen, if any exists.
     83      * @return The intent, or null.
     84      */
     85     public Intent createVoiceSearchHelpIntent() {
     86         return null;
     87     }
     88 
     89     /**
     90      * Gets the {@code versionCode} of the currently installed voice search package.
     91      *
     92      * @return The {@code versionCode} of voiceSearch, or 0 if none is installed.
     93      */
     94     public int getVersion() {
     95         ResolveInfo ri = getResolveInfo();
     96         if (ri == null) return 0;
     97         ComponentInfo ci = ri.activityInfo != null ? ri.activityInfo : ri.serviceInfo;
     98         try {
     99             return getContext().getPackageManager().getPackageInfo(ci.packageName, 0).versionCode;
    100         } catch (NameNotFoundException e) {
    101             Log.e(TAG, "Cannot find voice search package " + ci.packageName, e);
    102             return 0;
    103         }
    104     }
    105 
    106 }
    107