Home | History | Annotate | Download | only in usb 
      1 /*
      2  * Copyright (C) 2011 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.app.AlertDialog;
     21 import android.app.PendingIntent;
     22 import android.content.Context;
     23 import android.content.DialogInterface;
     24 import android.content.Intent;
     25 import android.content.pm.ApplicationInfo;
     26 import android.content.pm.PackageManager;
     27 import android.hardware.usb.IUsbManager;
     28 import android.hardware.usb.UsbDevice;
     29 import android.hardware.usb.UsbAccessory;
     30 import android.hardware.usb.UsbManager;
     31 import android.os.Bundle;
     32 import android.os.IBinder;
     33 import android.os.RemoteException;
     34 import android.os.ServiceManager;
     35 import android.os.UserHandle;
     36 import android.util.Log;
     37 import android.view.LayoutInflater;
     38 import android.view.View;
     39 import android.widget.CheckBox;
     40 import android.widget.CompoundButton;
     41 import android.widget.TextView;
     42 
     43 import com.android.internal.app.AlertActivity;
     44 import com.android.internal.app.AlertController;
     45 
     46 import com.android.systemui.R;
     47 
     48 public class UsbPermissionActivity extends AlertActivity
     49         implements DialogInterface.OnClickListener, CheckBox.OnCheckedChangeListener {
     50 
     51     private static final String TAG = "UsbPermissionActivity";
     52 
     53     private CheckBox mAlwaysUse;
     54     private TextView mClearDefaultHint;
     55     private UsbDevice mDevice;
     56     private UsbAccessory mAccessory;
     57     private PendingIntent mPendingIntent;
     58     private String mPackageName;
     59     private int mUid;
     60     private boolean mPermissionGranted;
     61     private UsbDisconnectedReceiver mDisconnectedReceiver;
     62 
     63     @Override
     64     public void onCreate(Bundle icicle) {
     65         super.onCreate(icicle);
     66 
     67        Intent intent = getIntent();
     68         mDevice = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
     69         mAccessory = (UsbAccessory)intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
     70         mPendingIntent = (PendingIntent)intent.getParcelableExtra(Intent.EXTRA_INTENT);
     71         mUid = intent.getIntExtra(Intent.EXTRA_UID, -1);
     72         mPackageName = intent.getStringExtra("package");
     73 
     74         PackageManager packageManager = getPackageManager();
     75         ApplicationInfo aInfo;
     76         try {
     77             aInfo = packageManager.getApplicationInfo(mPackageName, 0);
     78         } catch (PackageManager.NameNotFoundException e) {
     79             Log.e(TAG, "unable to look up package name", e);
     80             finish();
     81             return;
     82         }
     83         String appName = aInfo.loadLabel(packageManager).toString();
     84 
     85         final AlertController.AlertParams ap = mAlertParams;
     86         ap.mIcon = aInfo.loadIcon(packageManager);
     87         ap.mTitle = appName;
     88         if (mDevice == null) {
     89             ap.mMessage = getString(R.string.usb_accessory_permission_prompt, appName);
     90             mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mAccessory);
     91         } else {
     92             ap.mMessage = getString(R.string.usb_device_permission_prompt, appName);
     93             mDisconnectedReceiver = new UsbDisconnectedReceiver(this, mDevice);
     94         }
     95         ap.mPositiveButtonText = getString(android.R.string.ok);
     96         ap.mNegativeButtonText = getString(android.R.string.cancel);
     97         ap.mPositiveButtonListener = this;
     98         ap.mNegativeButtonListener = this;
     99 
    100         // add "always use" checkbox
    101         LayoutInflater inflater = (LayoutInflater)getSystemService(
    102                 Context.LAYOUT_INFLATER_SERVICE);
    103         ap.mView = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null);
    104         mAlwaysUse = (CheckBox)ap.mView.findViewById(com.android.internal.R.id.alwaysUse);
    105         if (mDevice == null) {
    106             mAlwaysUse.setText(R.string.always_use_accessory);
    107         } else {
    108             mAlwaysUse.setText(R.string.always_use_device);
    109         }
    110         mAlwaysUse.setOnCheckedChangeListener(this);
    111         mClearDefaultHint = (TextView)ap.mView.findViewById(
    112                                                     com.android.internal.R.id.clearDefaultHint);
    113         mClearDefaultHint.setVisibility(View.GONE);
    114 
    115         setupAlert();
    116 
    117     }
    118 
    119     @Override
    120     public void onDestroy() {
    121         IBinder b = ServiceManager.getService(USB_SERVICE);
    122         IUsbManager service = IUsbManager.Stub.asInterface(b);
    123 
    124         // send response via pending intent
    125         Intent intent = new Intent();
    126         try {
    127             if (mDevice != null) {
    128                 intent.putExtra(UsbManager.EXTRA_DEVICE, mDevice);
    129                 if (mPermissionGranted) {
    130                     service.grantDevicePermission(mDevice, mUid);
    131                     if (mAlwaysUse.isChecked()) {
    132                         final int userId = UserHandle.getUserId(mUid);
    133                         service.setDevicePackage(mDevice, mPackageName, userId);
    134                     }
    135                 }
    136             }
    137             if (mAccessory != null) {
    138                 intent.putExtra(UsbManager.EXTRA_ACCESSORY, mAccessory);
    139                 if (mPermissionGranted) {
    140                     service.grantAccessoryPermission(mAccessory, mUid);
    141                     if (mAlwaysUse.isChecked()) {
    142                         final int userId = UserHandle.getUserId(mUid);
    143                         service.setAccessoryPackage(mAccessory, mPackageName, userId);
    144                     }
    145                 }
    146             }
    147             intent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, mPermissionGranted);
    148             mPendingIntent.send(this, 0, intent);
    149         } catch (PendingIntent.CanceledException e) {
    150             Log.w(TAG, "PendingIntent was cancelled");
    151         } catch (RemoteException e) {
    152             Log.e(TAG, "IUsbService connection failed", e);
    153         }
    154 
    155         if (mDisconnectedReceiver != null) {
    156             unregisterReceiver(mDisconnectedReceiver);
    157         }
    158         super.onDestroy();
    159     }
    160 
    161     public void onClick(DialogInterface dialog, int which) {
    162         if (which == AlertDialog.BUTTON_POSITIVE) {
    163             mPermissionGranted = true;
    164         }
    165         finish();
    166     }
    167 
    168     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    169         if (mClearDefaultHint == null) return;
    170 
    171         if(isChecked) {
    172             mClearDefaultHint.setVisibility(View.VISIBLE);
    173         } else {
    174             mClearDefaultHint.setVisibility(View.GONE);
    175         }
    176     }
    177 }
    178