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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.development;
     18 
     19 import android.content.Context;
     20 import android.os.SystemProperties;
     21 import android.support.v7.preference.ListPreference;
     22 import android.support.v7.preference.Preference;
     23 import android.text.TextUtils;
     24 import android.view.ThreadedRenderer;
     25 
     26 import com.android.settings.R;
     27 import com.android.settings.core.PreferenceControllerMixin;
     28 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
     29 import com.android.settingslib.development.SystemPropPoker;
     30 
     31 public class ProfileGpuRenderingPreferenceController extends DeveloperOptionsPreferenceController
     32         implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
     33 
     34     private static final String TRACK_FRAME_TIME_KEY = "track_frame_time";
     35 
     36     private final String[] mListValues;
     37     private final String[] mListSummaries;
     38 
     39     public ProfileGpuRenderingPreferenceController(Context context) {
     40         super(context);
     41 
     42         mListValues = context.getResources().getStringArray(R.array.track_frame_time_values);
     43         mListSummaries = context.getResources().getStringArray(R.array.track_frame_time_entries);
     44     }
     45 
     46     @Override
     47     public String getPreferenceKey() {
     48         return TRACK_FRAME_TIME_KEY;
     49     }
     50 
     51     @Override
     52     public boolean onPreferenceChange(Preference preference, Object newValue) {
     53         writeTrackFrameTimeOptions(newValue);
     54         updateTrackFrameTimeOptions();
     55         return true;
     56     }
     57 
     58     @Override
     59     public void updateState(Preference preference) {
     60         updateTrackFrameTimeOptions();
     61     }
     62 
     63     private void writeTrackFrameTimeOptions(Object newValue) {
     64         SystemProperties.set(ThreadedRenderer.PROFILE_PROPERTY,
     65                 newValue == null ? "" : newValue.toString());
     66         SystemPropPoker.getInstance().poke();
     67     }
     68 
     69     private void updateTrackFrameTimeOptions() {
     70         final String value = SystemProperties.get(
     71                 ThreadedRenderer.PROFILE_PROPERTY, "" /* default */);
     72         int index = 0; // default
     73         for (int i = 0; i < mListValues.length; i++) {
     74             if (TextUtils.equals(value, mListValues[i])) {
     75                 index = i;
     76                 break;
     77             }
     78         }
     79         final ListPreference listPreference = (ListPreference) mPreference;
     80         listPreference.setValue(mListValues[index]);
     81         listPreference.setSummary(mListSummaries[index]);
     82     }
     83 }
     84