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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.ComponentName;
     20 import android.content.Context;
     21 import android.graphics.drawable.Drawable;
     22 import com.android.internal.logging.nano.MetricsProto;
     23 import com.android.settings.R;
     24 import com.android.settings.widget.RadioButtonPickerFragment;
     25 import com.android.settingslib.dream.DreamBackend;
     26 import com.android.settingslib.dream.DreamBackend.DreamInfo;
     27 import com.android.settingslib.widget.CandidateInfo;
     28 import java.util.HashMap;
     29 import java.util.List;
     30 import java.util.Map;
     31 import java.util.stream.Collectors;
     32 
     33 public final class CurrentDreamPicker extends RadioButtonPickerFragment {
     34 
     35     private DreamBackend mBackend;
     36 
     37     @Override
     38     public void onAttach(Context context) {
     39         super.onAttach(context);
     40 
     41         mBackend = DreamBackend.getInstance(context);
     42     }
     43 
     44     @Override
     45     protected int getPreferenceScreenResId() {
     46         return R.xml.current_dream_settings;
     47     }
     48 
     49     @Override
     50     public int getMetricsCategory() {
     51         return MetricsProto.MetricsEvent.DREAM;
     52     }
     53 
     54     @Override
     55     protected boolean setDefaultKey(String key) {
     56         Map<String, ComponentName> componentNameMap = getDreamComponentsMap();
     57         if (componentNameMap.get(key) != null) {
     58             mBackend.setActiveDream(componentNameMap.get(key));
     59             return true;
     60         }
     61         return false;
     62     }
     63 
     64     @Override
     65     protected String getDefaultKey() {
     66         return mBackend.getActiveDream().flattenToString();
     67     }
     68 
     69     @Override
     70     protected List<? extends CandidateInfo> getCandidates() {
     71         final List<DreamCandidateInfo> candidates;
     72         candidates = mBackend.getDreamInfos().stream()
     73                 .map(DreamCandidateInfo::new)
     74                 .collect(Collectors.toList());
     75 
     76         return candidates;
     77     }
     78 
     79     @Override
     80     protected void onSelectionPerformed(boolean success) {
     81         super.onSelectionPerformed(success);
     82 
     83         getActivity().finish();
     84     }
     85 
     86     private Map<String, ComponentName> getDreamComponentsMap() {
     87         Map<String, ComponentName> comps = new HashMap<>();
     88         mBackend.getDreamInfos()
     89                 .forEach((info) ->
     90                         comps.put(info.componentName.flattenToString(), info.componentName));
     91 
     92         return comps;
     93     }
     94 
     95     private static final class DreamCandidateInfo extends CandidateInfo {
     96         private final CharSequence name;
     97         private final Drawable icon;
     98         private final String key;
     99 
    100         DreamCandidateInfo(DreamInfo info) {
    101             super(true);
    102 
    103             name = info.caption;
    104             icon = info.icon;
    105             key = info.componentName.flattenToString();
    106         }
    107 
    108         @Override
    109         public CharSequence loadLabel() {
    110             return name;
    111         }
    112 
    113         @Override
    114         public Drawable loadIcon() {
    115             return icon;
    116         }
    117 
    118         @Override
    119         public String getKey() {
    120             return key;
    121         }
    122     }
    123 }
    124