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