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      1 /*
      2  * Copyright (C) 2015 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 
     17 package com.android.internal.app;
     18 
     19 import android.app.SearchManager;
     20 import android.content.ComponentName;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.pm.PackageManager;
     24 import android.content.pm.ResolveInfo;
     25 import android.os.Bundle;
     26 import android.os.IBinder;
     27 import android.os.RemoteException;
     28 import android.os.ServiceManager;
     29 import android.provider.Settings;
     30 import android.util.Log;
     31 
     32 /**
     33  * Utility method for dealing with the assistant aspects of
     34  * {@link com.android.internal.app.IVoiceInteractionManagerService IVoiceInteractionManagerService}.
     35  */
     36 public class AssistUtils {
     37 
     38     private static final String TAG = "AssistUtils";
     39 
     40     private final Context mContext;
     41     private final IVoiceInteractionManagerService mVoiceInteractionManagerService;
     42 
     43     public AssistUtils(Context context) {
     44         mContext = context;
     45         mVoiceInteractionManagerService = IVoiceInteractionManagerService.Stub.asInterface(
     46                 ServiceManager.getService(Context.VOICE_INTERACTION_MANAGER_SERVICE));
     47     }
     48 
     49     public boolean showSessionForActiveService(Bundle args, int sourceFlags,
     50             IVoiceInteractionSessionShowCallback showCallback, IBinder activityToken) {
     51         try {
     52             if (mVoiceInteractionManagerService != null) {
     53                 return mVoiceInteractionManagerService.showSessionForActiveService(args,
     54                         sourceFlags, showCallback, activityToken);
     55             }
     56         } catch (RemoteException e) {
     57             Log.w(TAG, "Failed to call showSessionForActiveService", e);
     58         }
     59         return false;
     60     }
     61 
     62     public void launchVoiceAssistFromKeyguard() {
     63         try {
     64             if (mVoiceInteractionManagerService != null) {
     65                 mVoiceInteractionManagerService.launchVoiceAssistFromKeyguard();
     66             }
     67         } catch (RemoteException e) {
     68             Log.w(TAG, "Failed to call launchVoiceAssistFromKeyguard", e);
     69         }
     70     }
     71 
     72     public boolean activeServiceSupportsAssistGesture() {
     73         try {
     74             return mVoiceInteractionManagerService != null
     75                     && mVoiceInteractionManagerService.activeServiceSupportsAssist();
     76         } catch (RemoteException e) {
     77             Log.w(TAG, "Failed to call activeServiceSupportsAssistGesture", e);
     78             return false;
     79         }
     80     }
     81 
     82     public boolean activeServiceSupportsLaunchFromKeyguard() {
     83         try {
     84             return mVoiceInteractionManagerService != null
     85                     && mVoiceInteractionManagerService.activeServiceSupportsLaunchFromKeyguard();
     86         } catch (RemoteException e) {
     87             Log.w(TAG, "Failed to call activeServiceSupportsLaunchFromKeyguard", e);
     88             return false;
     89         }
     90     }
     91 
     92     public ComponentName getActiveServiceComponentName() {
     93         try {
     94             if (mVoiceInteractionManagerService != null) {
     95                 return mVoiceInteractionManagerService.getActiveServiceComponentName();
     96             } else {
     97                 return null;
     98             }
     99         } catch (RemoteException e) {
    100             Log.w(TAG, "Failed to call getActiveServiceComponentName", e);
    101             return null;
    102         }
    103     }
    104 
    105     public boolean isSessionRunning() {
    106         try {
    107             return mVoiceInteractionManagerService != null
    108                     && mVoiceInteractionManagerService.isSessionRunning();
    109         } catch (RemoteException e) {
    110             Log.w(TAG, "Failed to call isSessionRunning", e);
    111             return false;
    112         }
    113     }
    114 
    115     public void hideCurrentSession() {
    116         try {
    117             if (mVoiceInteractionManagerService != null) {
    118                 mVoiceInteractionManagerService.hideCurrentSession();
    119             }
    120         } catch (RemoteException e) {
    121             Log.w(TAG, "Failed to call hideCurrentSession", e);
    122         }
    123     }
    124 
    125     public void onLockscreenShown() {
    126         try {
    127             if (mVoiceInteractionManagerService != null) {
    128                 mVoiceInteractionManagerService.onLockscreenShown();
    129             }
    130         } catch (RemoteException e) {
    131             Log.w(TAG, "Failed to call onLockscreenShown", e);
    132         }
    133     }
    134 
    135     public ComponentName getAssistComponentForUser(int userId) {
    136         final String setting = Settings.Secure.getStringForUser(mContext.getContentResolver(),
    137                 Settings.Secure.ASSISTANT, userId);
    138         if (setting != null) {
    139             return ComponentName.unflattenFromString(setting);
    140         }
    141 
    142         // Fallback to keep backward compatible behavior when there is no user setting.
    143         if (activeServiceSupportsAssistGesture()) {
    144             return getActiveServiceComponentName();
    145         }
    146 
    147         Intent intent = ((SearchManager) mContext.getSystemService(Context.SEARCH_SERVICE))
    148                 .getAssistIntent(false);
    149         PackageManager pm = mContext.getPackageManager();
    150         ResolveInfo info = pm.resolveActivityAsUser(intent, PackageManager.MATCH_DEFAULT_ONLY,
    151                 userId);
    152         if (info != null) {
    153             return new ComponentName(info.activityInfo.applicationInfo.packageName,
    154                     info.activityInfo.name);
    155         }
    156         return null;
    157     }
    158 
    159 }
    160