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      1 /*
      2  * Copyright (C) 2007 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;
     18 
     19 import android.content.Context;
     20 import android.content.Intent;
     21 import android.database.ContentObserver;
     22 import android.os.Handler;
     23 import android.os.Message;
     24 import android.os.SystemProperties;
     25 import android.os.UserHandle;
     26 import android.provider.Settings;
     27 import android.support.v14.preference.SwitchPreference;
     28 import android.support.v7.preference.Preference;
     29 
     30 import com.android.internal.logging.MetricsLogger;
     31 import com.android.internal.logging.MetricsProto.MetricsEvent;
     32 import com.android.internal.telephony.PhoneStateIntentReceiver;
     33 import com.android.internal.telephony.TelephonyProperties;
     34 import com.android.settingslib.WirelessUtils;
     35 
     36 public class AirplaneModeEnabler implements Preference.OnPreferenceChangeListener {
     37 
     38     private final Context mContext;
     39 
     40     private PhoneStateIntentReceiver mPhoneStateReceiver;
     41 
     42     private final SwitchPreference mSwitchPref;
     43 
     44     private static final int EVENT_SERVICE_STATE_CHANGED = 3;
     45 
     46     private Handler mHandler = new Handler() {
     47         @Override
     48         public void handleMessage(Message msg) {
     49             switch (msg.what) {
     50                 case EVENT_SERVICE_STATE_CHANGED:
     51                     onAirplaneModeChanged();
     52                     break;
     53             }
     54         }
     55     };
     56 
     57     private ContentObserver mAirplaneModeObserver = new ContentObserver(new Handler()) {
     58         @Override
     59         public void onChange(boolean selfChange) {
     60             onAirplaneModeChanged();
     61         }
     62     };
     63 
     64     public AirplaneModeEnabler(Context context, SwitchPreference airplaneModeSwitchPreference) {
     65 
     66         mContext = context;
     67         mSwitchPref = airplaneModeSwitchPreference;
     68 
     69         airplaneModeSwitchPreference.setPersistent(false);
     70 
     71         mPhoneStateReceiver = new PhoneStateIntentReceiver(mContext, mHandler);
     72         mPhoneStateReceiver.notifyServiceState(EVENT_SERVICE_STATE_CHANGED);
     73     }
     74 
     75     public void resume() {
     76 
     77         mSwitchPref.setChecked(WirelessUtils.isAirplaneModeOn(mContext));
     78 
     79         mPhoneStateReceiver.registerIntent();
     80         mSwitchPref.setOnPreferenceChangeListener(this);
     81         mContext.getContentResolver().registerContentObserver(
     82                 Settings.Global.getUriFor(Settings.Global.AIRPLANE_MODE_ON), true,
     83                 mAirplaneModeObserver);
     84     }
     85 
     86     public void pause() {
     87         mPhoneStateReceiver.unregisterIntent();
     88         mSwitchPref.setOnPreferenceChangeListener(null);
     89         mContext.getContentResolver().unregisterContentObserver(mAirplaneModeObserver);
     90     }
     91 
     92     private void setAirplaneModeOn(boolean enabling) {
     93         // Change the system setting
     94         Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON,
     95                                 enabling ? 1 : 0);
     96         // Update the UI to reflect system setting
     97         mSwitchPref.setChecked(enabling);
     98 
     99         // Post the intent
    100         Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
    101         intent.putExtra("state", enabling);
    102         mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
    103     }
    104 
    105     /**
    106      * Called when we've received confirmation that the airplane mode was set.
    107      * TODO: We update the checkbox summary when we get notified
    108      * that mobile radio is powered up/down. We should not have dependency
    109      * on one radio alone. We need to do the following:
    110      * - handle the case of wifi/bluetooth failures
    111      * - mobile does not send failure notification, fail on timeout.
    112      */
    113     private void onAirplaneModeChanged() {
    114         mSwitchPref.setChecked(WirelessUtils.isAirplaneModeOn(mContext));
    115     }
    116 
    117     /**
    118      * Called when someone clicks on the checkbox preference.
    119      */
    120     public boolean onPreferenceChange(Preference preference, Object newValue) {
    121         if (Boolean.parseBoolean(
    122                     SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE))) {
    123             // In ECM mode, do not update database at this point
    124         } else {
    125             Boolean value = (Boolean) newValue;
    126             MetricsLogger.action(mContext, MetricsEvent.ACTION_AIRPLANE_TOGGLE, value);
    127             setAirplaneModeOn(value);
    128         }
    129         return true;
    130     }
    131 
    132     public void setAirplaneModeInECM(boolean isECMExit, boolean isAirplaneModeOn) {
    133         if (isECMExit) {
    134             // update database based on the current checkbox state
    135             setAirplaneModeOn(isAirplaneModeOn);
    136         } else {
    137             // update summary
    138             onAirplaneModeChanged();
    139         }
    140     }
    141 
    142 }
    143