/actionslib/src/com/google/android/marvin/commands/UtilityCommandsBroadcastReceiver.java

 1// Copyright 2010 Google Inc. All Rights Reserved.
 2
 3package com.google.android.marvin.commands;
 4
 5
 6import com.google.android.marvin.commands.impls.BatteryLevelCommand;
 7import com.google.android.marvin.commands.impls.ConnectivityCommand;
 8import com.google.android.marvin.commands.impls.TimeAndDateCommand;
 9
10import android.app.Service;
11import android.content.BroadcastReceiver;
12import android.content.Context;
13import android.content.Intent;
14import android.util.Log;
15import android.view.accessibility.AccessibilityEvent;
16import android.view.accessibility.AccessibilityManager;
17
18import java.util.Date;
19import java.util.HashMap;
20import java.util.Map;
21
22/**
23 * The broadcast receiver that will process the commands defined in {@link UtilityCommands}.
24 * 
25 * @author clsimon@google.com (Cheryl Simon)
26 *
27 */
28public class UtilityCommandsBroadcastReceiver extends BroadcastReceiver {
29    
30    private static final String TAG = "UserEventBroadcastReceiver";
31
32    private Map<String, UtilityCommands> mIdToUserCommands;
33    
34    private Map<String, CommandExecutor> mIdToExecutor;
35    
36    private AccessibilityManager mAccessibilityManager;
37    
38    public UtilityCommandsBroadcastReceiver() {
39        mIdToUserCommands = new HashMap<String, UtilityCommands>();
40        for (UtilityCommands command : UtilityCommands.values()) {
41            mIdToUserCommands.put(command.getDisplayName(), command);
42        }
43    }
44
45    @Override
46    public void onReceive(Context context, Intent intent) {
47        if (mAccessibilityManager == null){
48            mAccessibilityManager =
49                (AccessibilityManager)context.getSystemService(Service.ACCESSIBILITY_SERVICE);
50        }
51        if (!mAccessibilityManager.isEnabled()) {
52            return;
53        }
54        
55        if (mIdToExecutor == null) {
56            Log.e(TAG, "Creating new command handlers");
57            mIdToExecutor = new HashMap<String, CommandExecutor>();
58            mIdToExecutor.put(
59                    UtilityCommands.BATTERY.getDisplayName(), 
60                    new BatteryLevelCommand());
61            mIdToExecutor.put(
62                    UtilityCommands.TIME.getDisplayName(), 
63                    new TimeAndDateCommand());
64//            mIdToExecutor.put(
65//                    UtilityCommands.LOCATION.getDisplayName(), 
66//                    new LocationCommand());
67            mIdToExecutor.put(
68                    UtilityCommands.CONNECTIVITY.getDisplayName(), 
69                    new ConnectivityCommand());
70        }
71        
72        String userEventName = intent.getStringExtra(CommandConstants.EXTRA_COMMAND_NAME);
73        Log.i(TAG, "got event " + userEventName);
74        CommandExecutor command = mIdToExecutor.get(userEventName);
75        if (command == null) {
76            Log.e(TAG, "Unimplemented command " + userEventName);
77        }
78        String text = command.executeCommand(context);
79        speakText(context, text);
80    }
81    
82    private void speakText(Context context, String text) {
83        Log.d(TAG, text);
84        AccessibilityEvent event = AccessibilityEvent.obtain(AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
85        event.setClassName(getClass().getCanonicalName());
86        event.setPackageName(getClass().getPackage().getName());
87        event.setEventTime(new Date().getTime());
88        event.getText().add(text);
89        
90        mAccessibilityManager.sendAccessibilityEvent(event);
91    }
92}