1 /* 2 * Copyright 2019 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.development.graphicsdriver; 18 19 import static com.android.settings.development.graphicsdriver.GraphicsDriverEnableForAllAppsPreferenceController.GAME_DRIVER_DEFAULT; 20 import static com.android.settings.development.graphicsdriver.GraphicsDriverEnableForAllAppsPreferenceController.GAME_DRIVER_OFF; 21 22 import android.content.ContentResolver; 23 import android.content.Context; 24 import android.os.Handler; 25 import android.os.Looper; 26 import android.provider.Settings; 27 28 import androidx.annotation.VisibleForTesting; 29 import androidx.preference.Preference; 30 import androidx.preference.PreferenceScreen; 31 32 import com.android.settings.core.BasePreferenceController; 33 import com.android.settingslib.core.lifecycle.LifecycleObserver; 34 import com.android.settingslib.core.lifecycle.events.OnStart; 35 import com.android.settingslib.core.lifecycle.events.OnStop; 36 import com.android.settingslib.widget.FooterPreference; 37 38 /** 39 * Controller of footer preference for Graphics Driver Preferences dashboard. 40 */ 41 public class GraphicsDriverFooterPreferenceController extends BasePreferenceController 42 implements GraphicsDriverContentObserver.OnGraphicsDriverContentChangedListener, 43 LifecycleObserver, OnStart, OnStop { 44 45 private final ContentResolver mContentResolver; 46 @VisibleForTesting 47 GraphicsDriverContentObserver mGraphicsDriverContentObserver; 48 49 private FooterPreference mPreference; 50 GraphicsDriverFooterPreferenceController(Context context, String key)51 public GraphicsDriverFooterPreferenceController(Context context, String key) { 52 super(context, key); 53 mContentResolver = context.getContentResolver(); 54 mGraphicsDriverContentObserver = 55 new GraphicsDriverContentObserver(new Handler(Looper.getMainLooper()), this); 56 } 57 58 @Override getAvailabilityStatus()59 public int getAvailabilityStatus() { 60 return Settings.Global.getInt( 61 mContentResolver, Settings.Global.GAME_DRIVER_ALL_APPS, GAME_DRIVER_DEFAULT) 62 == GAME_DRIVER_OFF 63 ? AVAILABLE_UNSEARCHABLE 64 : CONDITIONALLY_UNAVAILABLE; 65 } 66 67 @Override displayPreference(PreferenceScreen screen)68 public void displayPreference(PreferenceScreen screen) { 69 super.displayPreference(screen); 70 mPreference = screen.findPreference(getPreferenceKey()); 71 } 72 73 @Override onStart()74 public void onStart() { 75 mGraphicsDriverContentObserver.register(mContentResolver); 76 } 77 78 @Override onStop()79 public void onStop() { 80 mGraphicsDriverContentObserver.unregister(mContentResolver); 81 } 82 83 @Override updateState(Preference preference)84 public void updateState(Preference preference) { 85 final FooterPreference footerPref = (FooterPreference) preference; 86 footerPref.setVisible(isAvailable()); 87 } 88 89 @Override onGraphicsDriverContentChanged()90 public void onGraphicsDriverContentChanged() { 91 updateState(mPreference); 92 } 93 } 94