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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 package com.android.settings.wifi;
     17 
     18 import android.content.Context;
     19 import android.support.v7.preference.PreferenceScreen;
     20 
     21 import com.android.settings.core.PreferenceControllerMixin;
     22 import com.android.settings.core.instrumentation.MetricsFeatureProvider;
     23 import com.android.settings.widget.SummaryUpdater;
     24 import com.android.settings.widget.MasterSwitchPreference;
     25 import com.android.settings.widget.MasterSwitchController;
     26 import com.android.settingslib.core.AbstractPreferenceController;
     27 import com.android.settingslib.core.lifecycle.LifecycleObserver;
     28 import com.android.settingslib.core.lifecycle.events.OnPause;
     29 import com.android.settingslib.core.lifecycle.events.OnResume;
     30 import com.android.settingslib.core.lifecycle.events.OnStart;
     31 import com.android.settingslib.core.lifecycle.events.OnStop;
     32 
     33 public class WifiMasterSwitchPreferenceController extends AbstractPreferenceController
     34         implements PreferenceControllerMixin, SummaryUpdater.OnSummaryChangeListener,
     35         LifecycleObserver, OnResume, OnPause, OnStart, OnStop {
     36 
     37     public static final String KEY_TOGGLE_WIFI = "toggle_wifi";
     38 
     39     private MasterSwitchPreference mWifiPreference;
     40     private WifiEnabler mWifiEnabler;
     41     private final WifiSummaryUpdater mSummaryHelper;
     42     private final MetricsFeatureProvider mMetricsFeatureProvider;
     43 
     44     public WifiMasterSwitchPreferenceController(Context context,
     45             MetricsFeatureProvider metricsFeatureProvider) {
     46         super(context);
     47         mMetricsFeatureProvider = metricsFeatureProvider;
     48         mSummaryHelper = new WifiSummaryUpdater(mContext, this);
     49     }
     50 
     51     @Override
     52     public void displayPreference(PreferenceScreen screen) {
     53         super.displayPreference(screen);
     54         mWifiPreference = (MasterSwitchPreference) screen.findPreference(KEY_TOGGLE_WIFI);
     55     }
     56 
     57     @Override
     58     public boolean isAvailable() {
     59         return true;
     60     }
     61 
     62     @Override
     63     public String getPreferenceKey() {
     64         return KEY_TOGGLE_WIFI;
     65     }
     66 
     67     @Override
     68     public void onResume() {
     69         mSummaryHelper.register(true);
     70         if (mWifiEnabler != null) {
     71             mWifiEnabler.resume(mContext);
     72         }
     73     }
     74 
     75     @Override
     76     public void onPause() {
     77         if (mWifiEnabler != null) {
     78             mWifiEnabler.pause();
     79         }
     80         mSummaryHelper.register(false);
     81     }
     82 
     83     @Override
     84     public void onStart() {
     85         mWifiEnabler = new WifiEnabler(mContext, new MasterSwitchController(mWifiPreference),
     86             mMetricsFeatureProvider);
     87     }
     88 
     89     @Override
     90     public void onStop() {
     91         if (mWifiEnabler != null) {
     92             mWifiEnabler.teardownSwitchController();
     93         }
     94     }
     95 
     96     @Override
     97     public void onSummaryChanged(String summary) {
     98         if (mWifiPreference != null) {
     99             mWifiPreference.setSummary(summary);
    100         }
    101     }
    102 
    103 }
    104