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      1 /*
      2  * Copyright (C) 2009 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.phone;
     18 
     19 import android.content.Context;
     20 import android.os.AsyncResult;
     21 import android.os.Handler;
     22 import android.os.Message;
     23 import android.preference.CheckBoxPreference;
     24 import android.util.AttributeSet;
     25 import android.util.Log;
     26 
     27 import com.android.internal.telephony.Phone;
     28 
     29 public class Use2GOnlyCheckBoxPreference extends CheckBoxPreference {
     30     private static final String LOG_TAG = "Use2GOnlyCheckBoxPreference";
     31     private static final boolean DBG = true;
     32 
     33     private Phone mPhone;
     34     private MyHandler mHandler;
     35 
     36     public Use2GOnlyCheckBoxPreference(Context context) {
     37         this(context, null);
     38     }
     39 
     40     public Use2GOnlyCheckBoxPreference(Context context, AttributeSet attrs) {
     41         this(context, attrs,com.android.internal.R.attr.checkBoxPreferenceStyle);
     42     }
     43 
     44     public Use2GOnlyCheckBoxPreference(Context context, AttributeSet attrs, int defStyle) {
     45         super(context, attrs, defStyle);
     46         mPhone = PhoneApp.getPhone();
     47         mHandler = new MyHandler();
     48         mPhone.getPreferredNetworkType(
     49                 mHandler.obtainMessage(MyHandler.MESSAGE_GET_PREFERRED_NETWORK_TYPE));
     50     }
     51 
     52     @Override
     53     protected void  onClick() {
     54         super.onClick();
     55 
     56         int networkType = isChecked() ? Phone.NT_MODE_GSM_ONLY : Phone.NT_MODE_WCDMA_PREF;
     57         Log.i(LOG_TAG, "set preferred network type="+networkType);
     58         mPhone.setPreferredNetworkType(networkType, mHandler
     59                 .obtainMessage(MyHandler.MESSAGE_SET_PREFERRED_NETWORK_TYPE));
     60    }
     61 
     62     private class MyHandler extends Handler {
     63 
     64         private static final int MESSAGE_GET_PREFERRED_NETWORK_TYPE = 0;
     65         private static final int MESSAGE_SET_PREFERRED_NETWORK_TYPE = 1;
     66 
     67         @Override
     68         public void handleMessage(Message msg) {
     69             switch (msg.what) {
     70                 case MESSAGE_GET_PREFERRED_NETWORK_TYPE:
     71                     handleGetPreferredNetworkTypeResponse(msg);
     72                     break;
     73 
     74                 case MESSAGE_SET_PREFERRED_NETWORK_TYPE:
     75                     handleSetPreferredNetworkTypeResponse(msg);
     76                     break;
     77             }
     78         }
     79 
     80         private void handleGetPreferredNetworkTypeResponse(Message msg) {
     81             AsyncResult ar = (AsyncResult) msg.obj;
     82 
     83             if (ar.exception == null) {
     84                 int type = ((int[])ar.result)[0];
     85                 Log.i(LOG_TAG, "get preferred network type="+type);
     86                 setChecked(type == Phone.NT_MODE_GSM_ONLY);
     87             } else {
     88                 // Weird state, disable the setting
     89                 Log.i(LOG_TAG, "get preferred network type, exception="+ar.exception);
     90                 setEnabled(false);
     91             }
     92         }
     93 
     94         private void handleSetPreferredNetworkTypeResponse(Message msg) {
     95             AsyncResult ar = (AsyncResult) msg.obj;
     96 
     97             if (ar.exception != null) {
     98                 // Yikes, error, disable the setting
     99                 setEnabled(false);
    100                 // Set UI to current state
    101                 Log.i(LOG_TAG, "set preferred network type, exception=" + ar.exception);
    102                 mPhone.getPreferredNetworkType(obtainMessage(MESSAGE_GET_PREFERRED_NETWORK_TYPE));
    103             } else {
    104                 Log.i(LOG_TAG, "set preferred network type done");
    105             }
    106         }
    107     }
    108 }
    109