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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"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package com.android.systemui.statusbar.phone;
     16 
     17 import android.content.Context;
     18 import android.content.om.IOverlayManager;
     19 import android.content.pm.ActivityInfo;
     20 import android.content.res.Configuration;
     21 import android.os.LocaleList;
     22 import android.os.RemoteException;
     23 import android.os.ServiceManager;
     24 import android.os.UserHandle;
     25 
     26 import com.android.systemui.ConfigurationChangedReceiver;
     27 import com.android.systemui.statusbar.policy.ConfigurationController;
     28 
     29 import java.util.ArrayList;
     30 import java.util.HashMap;
     31 import java.util.Map;
     32 
     33 public class ConfigurationControllerImpl implements ConfigurationController,
     34         ConfigurationChangedReceiver {
     35 
     36     private final ArrayList<ConfigurationListener> mListeners = new ArrayList<>();
     37     private final Configuration mLastConfig = new Configuration();
     38     private int mDensity;
     39     private float mFontScale;
     40     private boolean mInCarMode;
     41     private int mUiMode;
     42     private LocaleList mLocaleList;
     43 
     44     public ConfigurationControllerImpl(Context context) {
     45         Configuration currentConfig = context.getResources().getConfiguration();
     46         mFontScale = currentConfig.fontScale;
     47         mDensity = currentConfig.densityDpi;
     48         mInCarMode = (currentConfig.uiMode  & Configuration.UI_MODE_TYPE_MASK)
     49                 == Configuration.UI_MODE_TYPE_CAR;
     50         mUiMode = currentConfig.uiMode & Configuration.UI_MODE_NIGHT_MASK;
     51         mLocaleList = currentConfig.getLocales();
     52     }
     53 
     54     @Override
     55     public void onConfigurationChanged(Configuration newConfig) {
     56         // Avoid concurrent modification exception
     57         ArrayList<ConfigurationListener> listeners = new ArrayList<>(mListeners);
     58 
     59         listeners.forEach(l -> {
     60             if (mListeners.contains(l)) {
     61                 l.onConfigChanged(newConfig);
     62             }
     63         });
     64         final float fontScale = newConfig.fontScale;
     65         final int density = newConfig.densityDpi;
     66         int uiMode = newConfig.uiMode & Configuration.UI_MODE_NIGHT_MASK;
     67         if (density != mDensity || fontScale != mFontScale
     68                 || (mInCarMode && uiMode != mUiMode)) {
     69             listeners.forEach(l -> {
     70                 if (mListeners.contains(l)) {
     71                     l.onDensityOrFontScaleChanged();
     72                 }
     73             });
     74             mDensity = density;
     75             mFontScale = fontScale;
     76             mUiMode = uiMode;
     77         }
     78 
     79         final LocaleList localeList = newConfig.getLocales();
     80         if (!localeList.equals(mLocaleList)) {
     81             mLocaleList = localeList;
     82             listeners.forEach(l -> {
     83                 if (mListeners.contains(l)) {
     84                     l.onLocaleListChanged();
     85                 }
     86             });
     87         }
     88 
     89         if ((mLastConfig.updateFrom(newConfig) & ActivityInfo.CONFIG_ASSETS_PATHS) != 0) {
     90                 listeners.forEach(l -> {
     91                     if (mListeners.contains(l)) {
     92                         l.onOverlayChanged();
     93                     }
     94                 });
     95         }
     96     }
     97 
     98     @Override
     99     public void addCallback(ConfigurationListener listener) {
    100         mListeners.add(listener);
    101         listener.onDensityOrFontScaleChanged();
    102     }
    103 
    104     @Override
    105     public void removeCallback(ConfigurationListener listener) {
    106         mListeners.remove(listener);
    107     }
    108 }
    109