BluetoothController.java revision 0f167d75667e1e4f731c2ab1166d345572a4ef46 
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
17package com.android.systemui.statusbar.policy;
18
19import java.util.ArrayList;
20
21import android.bluetooth.BluetoothAdapter;
22import android.content.BroadcastReceiver;
23import android.content.Context;
24import android.content.Intent;
25import android.content.IntentFilter;
26import android.view.View;
27import android.widget.ImageView;
28
29import com.android.systemui.R;
30
31public 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;
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        handleAdapterStateChange(adapter.getState());
51        handleConnectionStateChange(adapter.getConnectionState());
52        refreshViews();
53    }
54
55    public void addIconView(ImageView v) {
56        mIconViews.add(v);
57    }
58
59    @Override
60    public void onReceive(Context context, Intent intent) {
61        final String action = intent.getAction();
62
63        if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
64            handleAdapterStateChange(
65                    intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR));
66        } else if (action.equals(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED)) {
67            handleConnectionStateChange(
68                    intent.getIntExtra(BluetoothAdapter.EXTRA_CONNECTION_STATE,
69                        BluetoothAdapter.STATE_DISCONNECTED));
70        }
71        refreshViews();
72    }
73
74    public void handleAdapterStateChange(int adapterState) {
75        mEnabled = (adapterState == BluetoothAdapter.STATE_ON);
76    }
77
78    public void handleConnectionStateChange(int connectionState) {
79        final boolean connected = (connectionState == BluetoothAdapter.STATE_CONNECTED);
80        if (connected) {
81            mIconId = R.drawable.stat_sys_data_bluetooth_connected;
82            mContentDescriptionId = R.string.accessibility_bluetooth_connected;
83        } else {
84            mIconId = R.drawable.stat_sys_data_bluetooth;
85            mContentDescriptionId = R.string.accessibility_bluetooth_disconnected;
86        }
87    }
88
89    public void refreshViews() {
90        int N = mIconViews.size();
91        for (int i=0; i<N; i++) {
92            ImageView v = mIconViews.get(i);
93            v.setImageResource(mIconId);
94            v.setVisibility(mEnabled ? View.VISIBLE : View.GONE);
95            v.setContentDescription((mContentDescriptionId == 0)
96                    ? null
97                    : mContext.getString(mContentDescriptionId));
98        }
99    }
100}
101