1 /* 2 * Copyright (C) 2022 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.settings.language; 18 19 import android.content.ComponentName; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.pm.PackageManager; 23 import android.text.TextUtils; 24 25 import androidx.annotation.NonNull; 26 import androidx.annotation.Nullable; 27 import androidx.preference.Preference; 28 import androidx.preference.PreferenceScreen; 29 30 import com.android.internal.annotations.Initializer; 31 import com.android.settings.applications.defaultapps.DefaultAppPreferenceController; 32 import com.android.settingslib.applications.DefaultAppInfo; 33 import com.android.settingslib.core.lifecycle.Lifecycle; 34 import com.android.settingslib.core.lifecycle.LifecycleObserver; 35 import com.android.settingslib.core.lifecycle.events.OnPause; 36 import com.android.settingslib.core.lifecycle.events.OnResume; 37 38 /** Controller of the Voice Input preference. */ 39 public class DefaultVoiceInputPreferenceController extends DefaultAppPreferenceController 40 implements LifecycleObserver, OnResume, OnPause { 41 42 private static final String KEY_VOICE_INPUT = "voice_input_settings"; 43 44 private VoiceInputHelper mHelper; 45 private PreferenceScreen mScreen; 46 private Preference mPreference; 47 private Context mContext; 48 DefaultVoiceInputPreferenceController( @onNull Context context, @Nullable Lifecycle lifecycle)49 public DefaultVoiceInputPreferenceController( 50 @NonNull Context context, @Nullable Lifecycle lifecycle) { 51 super(context); 52 mContext = context; 53 mHelper = new VoiceInputHelper(context); 54 mHelper.buildUi(); 55 if (lifecycle != null) { 56 lifecycle.addObserver(this); 57 } 58 } 59 60 @Override isAvailable()61 public boolean isAvailable() { 62 return mContext.getPackageManager().hasSystemFeature( 63 PackageManager.FEATURE_VOICE_RECOGNIZERS); 64 } 65 66 @Override getPreferenceKey()67 public String getPreferenceKey() { 68 return KEY_VOICE_INPUT; 69 } 70 71 @Override 72 @Initializer displayPreference(PreferenceScreen screen)73 public void displayPreference(PreferenceScreen screen) { 74 mScreen = screen; 75 mPreference = screen.findPreference(getPreferenceKey()); 76 super.displayPreference(screen); 77 } 78 79 @Override onResume()80 public void onResume() { 81 updatePreference(); 82 } 83 84 @Override updateState(Preference preference)85 public void updateState(Preference preference) { 86 super.updateState(mPreference); 87 updatePreference(); 88 } 89 90 @Override onPause()91 public void onPause() {} 92 93 @Override getDefaultAppInfo()94 protected DefaultAppInfo getDefaultAppInfo() { 95 final String defaultKey = getDefaultAppKey(); 96 if (defaultKey == null) { 97 return null; 98 } 99 100 for (VoiceInputHelper.RecognizerInfo info : mHelper.mAvailableRecognizerInfos) { 101 if (TextUtils.equals(defaultKey, info.mKey)) { 102 return new DefaultVoiceInputPicker.VoiceInputDefaultAppInfo(mContext, 103 mPackageManager, mUserId, info, true /* enabled */); 104 } 105 } 106 return null; 107 } 108 109 @Override getSettingIntent(DefaultAppInfo info)110 protected Intent getSettingIntent(DefaultAppInfo info) { 111 final DefaultAppInfo appInfo = getDefaultAppInfo(); 112 if (appInfo == null 113 || !(appInfo instanceof DefaultVoiceInputPicker.VoiceInputDefaultAppInfo)) { 114 return null; 115 } 116 return ((DefaultVoiceInputPicker.VoiceInputDefaultAppInfo) appInfo).getSettingIntent(); 117 } 118 updatePreference()119 private void updatePreference() { 120 if (mPreference == null) { 121 return; 122 } 123 mHelper.buildUi(); 124 if (isAvailable()) { 125 if (mScreen.findPreference(getPreferenceKey()) == null) { 126 // add it if it's not on scree 127 mScreen.addPreference(mPreference); 128 } 129 } else { 130 mScreen.removePreference(mPreference); 131 } 132 } 133 getDefaultAppKey()134 private String getDefaultAppKey() { 135 final ComponentName currentService = DefaultVoiceInputPicker.getCurrentService(mHelper); 136 if (currentService == null) { 137 return null; 138 } 139 return currentService.flattenToShortString(); 140 } 141 } 142