Home | History | Annotate | Download | only in dream 
      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.dream;
     18 
     19 import android.content.Context;
     20 import android.support.v7.preference.Preference;
     21 import com.android.settings.core.PreferenceControllerMixin;
     22 import com.android.settings.widget.GearPreference;
     23 import com.android.settingslib.core.AbstractPreferenceController;
     24 import com.android.settingslib.dream.DreamBackend;
     25 import com.android.settingslib.dream.DreamBackend.DreamInfo;
     26 import java.util.Optional;
     27 
     28 public class CurrentDreamPreferenceController extends AbstractPreferenceController implements
     29         PreferenceControllerMixin {
     30     private final DreamBackend mBackend;
     31     private final static String TAG = "CurrentDreamPreferenceController";
     32     private final static String CURRENT_SCREENSAVER = "current_screensaver";
     33 
     34     public CurrentDreamPreferenceController(Context context) {
     35         super(context);
     36         mBackend = DreamBackend.getInstance(context);
     37     }
     38 
     39     @Override
     40     public boolean isAvailable() {
     41         return mBackend.getDreamInfos().size() > 0;
     42     }
     43 
     44     @Override
     45     public String getPreferenceKey() {
     46         return CURRENT_SCREENSAVER;
     47     }
     48 
     49     @Override
     50     public void updateState(Preference preference) {
     51         super.updateState(preference);
     52 
     53         preference.setSummary(mBackend.getActiveDreamName());
     54         setGearClickListenerForPreference(preference);
     55     }
     56 
     57     private void setGearClickListenerForPreference(Preference preference) {
     58         if (!(preference instanceof GearPreference)) return;
     59 
     60         GearPreference gearPreference = (GearPreference)preference;
     61         Optional<DreamInfo> info = getActiveDreamInfo();
     62         if (!info.isPresent() || info.get().settingsComponentName == null) {
     63             gearPreference.setOnGearClickListener(null);
     64             return;
     65         }
     66         gearPreference.setOnGearClickListener(gearPref -> launchScreenSaverSettings());
     67     }
     68 
     69     private void launchScreenSaverSettings() {
     70         Optional<DreamInfo> info = getActiveDreamInfo();
     71         if (!info.isPresent()) return;
     72         mBackend.launchSettings(info.get());
     73     }
     74 
     75     private Optional<DreamInfo> getActiveDreamInfo() {
     76         return mBackend.getDreamInfos()
     77                 .stream()
     78                 .filter((info) -> info.isActive)
     79                 .findFirst();
     80     }
     81 }
     82