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      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 
     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 
     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
     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 }