1 /*
2  * Copyright (C) 2010 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.usb;
18 
19 import android.app.Activity;
20 import android.content.BroadcastReceiver;
21 import android.content.Context;
22 import android.content.Intent;
23 import android.content.IntentFilter;
24 import android.hardware.usb.UsbAccessory;
25 import android.hardware.usb.UsbDevice;
26 import android.hardware.usb.UsbManager;
27 
28 // This class is used to close UsbPermissionsActivity and UsbResolverActivity
29 // if their device/accessory is disconnected while the dialog is still open
30 class UsbDisconnectedReceiver extends BroadcastReceiver {
31     private final Activity mActivity;
32     private UsbDevice mDevice;
33     private UsbAccessory mAccessory;
34 
UsbDisconnectedReceiver(Activity activity, UsbDevice device)35     public UsbDisconnectedReceiver(Activity activity, UsbDevice device) {
36        mActivity = activity;
37         mDevice = device;
38 
39         IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_DEVICE_DETACHED);
40         activity.registerReceiver(this, filter);
41     }
42 
UsbDisconnectedReceiver(Activity activity, UsbAccessory accessory)43     public UsbDisconnectedReceiver(Activity activity, UsbAccessory accessory) {
44         mActivity = activity;
45         mAccessory = accessory;
46 
47         IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
48         activity.registerReceiver(this, filter);
49     }
50 
51     @Override
onReceive(Context context, Intent intent)52     public void onReceive(Context context, Intent intent) {
53         String action = intent.getAction();
54         if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) {
55             UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
56             if (device != null && device.equals(mDevice)) {
57                 mActivity.finish();
58             }
59         } else if (UsbManager.ACTION_USB_ACCESSORY_DETACHED.equals(action)) {
60             UsbAccessory accessory =
61                     (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
62             if (accessory != null && accessory.equals(mAccessory)) {
63                 mActivity.finish();
64             }
65         }
66     }
67 }