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      1 /*
      2  * Copyright (C) 2008 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.systemui.statusbar.policy;
     18 
     19 import java.util.ArrayList;
     20 
     21 import android.bluetooth.BluetoothAdapter;
     22 import android.content.BroadcastReceiver;
     23 import android.content.Context;
     24 import android.content.Intent;
     25 import android.content.IntentFilter;
     26 import android.view.View;
     27 import android.widget.ImageView;
     28 
     29 import com.android.systemui.R;
     30 
     31 public class BluetoothController extends BroadcastReceiver {
     32     private static final String TAG = "StatusBar.BluetoothController";
     33 
     34     private Context mContext;
     35     private ArrayList<ImageView> mIconViews = new ArrayList<ImageView>();
     36 
     37     private int mIconId = R.drawable.stat_sys_data_bluetooth;
     38     private int mContentDescriptionId = 0;
     39     private boolean mEnabled = false;
     40 
     41     public BluetoothController(Context context) {
     42         mContext = context;
     43 
     44         IntentFilter filter = new IntentFilter();
     45         filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
     46         filter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED);
     47         context.registerReceiver(this, filter);
     48 
     49         final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
     50         if (adapter != null) {
     51             handleAdapterStateChange(adapter.getState());
     52             handleConnectionStateChange(adapter.getConnectionState());
     53         }
     54         refreshViews();
     55     }
     56 
     57     public void addIconView(ImageView v) {
     58         mIconViews.add(v);
     59     }
     60 
     61     @Override
     62     public void onReceive(Context context, Intent intent) {
     63         final String action = intent.getAction();
     64 
     65         if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
     66             handleAdapterStateChange(
     67                     intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR));
     68         } else if (action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) {
     69             handleConnectionStateChange(
     70                     intent.getIntExtra(BluetoothAdapter.EXTRA_CONNECTION_STATE,
     71                         BluetoothAdapter.STATE_DISCONNECTED));
     72         }
     73         refreshViews();
     74     }
     75 
     76     public void handleAdapterStateChange(int adapterState) {
     77         mEnabled = (adapterState == BluetoothAdapter.STATE_ON);
     78     }
     79 
     80     public void handleConnectionStateChange(int connectionState) {
     81         final boolean connected = (connectionState == BluetoothAdapter.STATE_CONNECTED);
     82         if (connected) {
     83             mIconId = R.drawable.stat_sys_data_bluetooth_connected;
     84             mContentDescriptionId = R.string.accessibility_bluetooth_connected;
     85         } else {
     86             mIconId = R.drawable.stat_sys_data_bluetooth;
     87             mContentDescriptionId = R.string.accessibility_bluetooth_disconnected;
     88         }
     89     }
     90 
     91     public void refreshViews() {
     92         int N = mIconViews.size();
     93         for (int i=0; i<N; i++) {
     94             ImageView v = mIconViews.get(i);
     95             v.setImageResource(mIconId);
     96             v.setVisibility(mEnabled ? View.VISIBLE : View.GONE);
     97             v.setContentDescription((mContentDescriptionId == 0)
     98                     ? null
     99                     : mContext.getString(mContentDescriptionId));
    100         }
    101     }
    102 }
    103