Home | History | Annotate | Download | only in quicksearchbox 
      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.ComponentName;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.pm.ComponentInfo;
     23 import android.content.pm.PackageManager;
     24 import android.content.pm.PackageManager.NameNotFoundException;
     25 import android.content.pm.ResolveInfo;
     26 import android.os.Bundle;
     27 import android.speech.RecognizerIntent;
     28 import android.util.Log;
     29 
     30 /**
     31  * Voice Search integration.
     32  */
     33 public class VoiceSearch {
     34 
     35     private static final String TAG = "QSB.VoiceSearch";
     36 
     37     private final Context mContext;
     38 
     39     public VoiceSearch(Context context) {
     40         mContext = context;
     41     }
     42 
     43     protected Context getContext() {
     44         return mContext;
     45     }
     46 
     47     public boolean shouldShowVoiceSearch(Corpus corpus) {
     48         return corpusSupportsVoiceSearch(corpus) && isVoiceSearchAvailable();
     49     }
     50 
     51     protected boolean corpusSupportsVoiceSearch(Corpus corpus) {
     52         return (corpus == null || corpus.voiceSearchEnabled());
     53     }
     54 
     55     protected Intent createVoiceSearchIntent() {
     56         return new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
     57     }
     58 
     59     private ResolveInfo getResolveInfo() {
     60         Intent intent = createVoiceSearchIntent();
     61         ResolveInfo ri = mContext.getPackageManager().
     62                 resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
     63         return ri;
     64     }
     65 
     66     public boolean isVoiceSearchAvailable() {
     67         return getResolveInfo() != null;
     68     }
     69 
     70     public Intent createVoiceWebSearchIntent(Bundle appData) {
     71         if (!isVoiceSearchAvailable()) return null;
     72         Intent intent = createVoiceSearchIntent();
     73         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     74         intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
     75                 RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
     76         if (appData != null) {
     77             intent.putExtra(SearchManager.APP_DATA, appData);
     78         }
     79         return intent;
     80     }
     81 
     82     /**
     83      * Create an intent to launch the voice search help screen, if any exists.
     84      * @return The intent, or null.
     85      */
     86     public Intent createVoiceSearchHelpIntent() {
     87         return null;
     88     }
     89 
     90     /**
     91      * Gets the {@code versionCode} of the currently installed voice search package.
     92      *
     93      * @return The {@code versionCode} of voiceSearch, or 0 if none is installed.
     94      */
     95     public int getVersion() {
     96         ResolveInfo ri = getResolveInfo();
     97         if (ri == null) return 0;
     98         ComponentInfo ci = ri.activityInfo != null ? ri.activityInfo : ri.serviceInfo;
     99         try {
    100             return getContext().getPackageManager().getPackageInfo(ci.packageName, 0).versionCode;
    101         } catch (NameNotFoundException e) {
    102             Log.e(TAG, "Cannot find voice search package " + ci.packageName, e);
    103             return 0;
    104         }
    105     }
    106 
    107     public ComponentName getComponent() {
    108         return createVoiceSearchIntent().resolveActivity(getContext().getPackageManager());
    109     }
    110 }
    111