1 /* 2 * Copyright (C) 2017 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.applications.assist; 18 19 import android.content.Context; 20 import android.net.Uri; 21 import android.os.UserHandle; 22 import android.provider.Settings; 23 import android.support.v7.preference.Preference; 24 import android.support.v7.preference.PreferenceScreen; 25 import android.support.v7.preference.TwoStatePreference; 26 27 import com.android.internal.app.AssistUtils; 28 import com.android.settings.core.PreferenceControllerMixin; 29 import com.android.settingslib.core.AbstractPreferenceController; 30 import com.android.settingslib.core.lifecycle.Lifecycle; 31 import com.android.settingslib.core.lifecycle.LifecycleObserver; 32 import com.android.settingslib.core.lifecycle.events.OnPause; 33 import com.android.settingslib.core.lifecycle.events.OnResume; 34 35 import java.util.Arrays; 36 import java.util.List; 37 38 public class AssistScreenshotPreferenceController extends AbstractPreferenceController 39 implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener, 40 LifecycleObserver, OnResume, OnPause { 41 42 private static final String KEY_SCREENSHOT = "screenshot"; 43 44 private final AssistUtils mAssistUtils; 45 private final SettingObserver mSettingObserver; 46 47 private PreferenceScreen mScreen; 48 private Preference mPreference; 49 AssistScreenshotPreferenceController(Context context, Lifecycle lifecycle)50 public AssistScreenshotPreferenceController(Context context, Lifecycle lifecycle) { 51 super(context); 52 mAssistUtils = new AssistUtils(context); 53 mSettingObserver = new SettingObserver(); 54 if (lifecycle != null) { 55 lifecycle.addObserver(this); 56 } 57 } 58 59 @Override isAvailable()60 public boolean isAvailable() { 61 return mAssistUtils.getAssistComponentForUser(UserHandle.myUserId()) != null; 62 } 63 64 @Override displayPreference(PreferenceScreen screen)65 public void displayPreference(PreferenceScreen screen) { 66 mScreen = screen; 67 mPreference = screen.findPreference(getPreferenceKey()); 68 super.displayPreference(screen); 69 } 70 71 @Override getPreferenceKey()72 public String getPreferenceKey() { 73 return KEY_SCREENSHOT; 74 } 75 76 @Override onResume()77 public void onResume() { 78 mSettingObserver.register(mContext.getContentResolver(), true); 79 updatePreference(); 80 } 81 82 @Override updateState(Preference preference)83 public void updateState(Preference preference) { 84 updatePreference(); 85 } 86 87 @Override onPause()88 public void onPause() { 89 mSettingObserver.register(mContext.getContentResolver(), false); 90 } 91 92 @Override onPreferenceChange(Preference preference, Object newValue)93 public boolean onPreferenceChange(Preference preference, Object newValue) { 94 Settings.Secure.putInt(mContext.getContentResolver(), 95 Settings.Secure.ASSIST_SCREENSHOT_ENABLED, 96 (boolean) newValue ? 1 : 0); 97 return true; 98 } 99 updatePreference()100 private void updatePreference() { 101 if (mPreference == null || !(mPreference instanceof TwoStatePreference)) { 102 return; 103 } 104 if (isAvailable()) { 105 if (mScreen.findPreference(getPreferenceKey()) == null) { 106 // add it if it's not on scree 107 mScreen.addPreference(mPreference); 108 } 109 } else { 110 mScreen.removePreference(mPreference); 111 } 112 final boolean checked = Settings.Secure.getInt(mContext.getContentResolver(), 113 Settings.Secure.ASSIST_SCREENSHOT_ENABLED, 1) != 0; 114 ((TwoStatePreference) mPreference).setChecked(checked); 115 final boolean contextChecked = Settings.Secure.getInt(mContext.getContentResolver(), 116 Settings.Secure.ASSIST_STRUCTURE_ENABLED, 1) != 0; 117 mPreference.setEnabled(contextChecked); 118 } 119 120 class SettingObserver extends AssistSettingObserver { 121 122 private final Uri URI = 123 Settings.Secure.getUriFor(Settings.Secure.ASSIST_SCREENSHOT_ENABLED); 124 private final Uri CONTEXT_URI = 125 Settings.Secure.getUriFor(Settings.Secure.ASSIST_STRUCTURE_ENABLED); 126 127 @Override getSettingUris()128 protected List<Uri> getSettingUris() { 129 return Arrays.asList(URI, CONTEXT_URI); 130 } 131 132 @Override onSettingChange()133 public void onSettingChange() { 134 updatePreference(); 135 } 136 } 137 } 138