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      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 android.support.v7.preference.PreferenceScreen;
     22 import android.widget.Button;
     23 import com.android.settings.R;
     24 import com.android.settings.applications.LayoutPreference;
     25 import com.android.settings.core.PreferenceControllerMixin;
     26 import com.android.settingslib.core.AbstractPreferenceController;
     27 import com.android.settingslib.dream.DreamBackend;
     28 
     29 public class StartNowPreferenceController extends AbstractPreferenceController implements
     30         PreferenceControllerMixin {
     31     private static final String TAG = "StartNowPreferenceController";
     32     private static final String PREF_KEY = "dream_start_now_button_container";
     33     private final DreamBackend mBackend;
     34 
     35     public StartNowPreferenceController(Context context) {
     36         super(context);
     37 
     38         mBackend = DreamBackend.getInstance(context);
     39     }
     40 
     41     @Override
     42     public boolean isAvailable() {
     43         return true;
     44     }
     45 
     46     @Override
     47     public String getPreferenceKey() {
     48         return PREF_KEY;
     49     }
     50 
     51     @Override
     52     public void displayPreference(PreferenceScreen screen) {
     53         super.displayPreference(screen);
     54 
     55         LayoutPreference pref = (LayoutPreference) screen.findPreference(getPreferenceKey());
     56         Button startButton = (Button)pref.findViewById(R.id.dream_start_now_button);
     57         startButton.setOnClickListener(v -> mBackend.startDreaming());
     58     }
     59 
     60     @Override
     61     public void updateState(Preference preference) {
     62         super.updateState(preference);
     63 
     64         Button startButton = (Button)((LayoutPreference)preference)
     65                 .findViewById(R.id.dream_start_now_button);
     66         startButton.setEnabled(mBackend.getWhenToDreamSetting() != DreamBackend.NEVER);
     67     }
     68 }
     69