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      1 /*
      2  * Copyright (C) 2012 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.content.BroadcastReceiver;
     22 import android.content.Context;
     23 import android.content.DialogInterface;
     24 import android.content.Intent;
     25 import android.content.IntentFilter;
     26 import android.graphics.Typeface;
     27 import android.hardware.usb.IUsbManager;
     28 import android.hardware.usb.UsbDevice;
     29 import android.hardware.usb.UsbManager;
     30 import android.os.Bundle;
     31 import android.os.IBinder;
     32 import android.os.ServiceManager;
     33 import android.util.Log;
     34 import android.view.LayoutInflater;
     35 import android.view.View;
     36 import android.widget.CheckBox;
     37 import android.widget.LinearLayout;
     38 import android.widget.TextView;
     39 
     40 import com.android.internal.app.AlertActivity;
     41 import com.android.internal.app.AlertController;
     42 
     43 import com.android.systemui.R;
     44 
     45 public class UsbDebuggingActivity extends AlertActivity
     46                                   implements DialogInterface.OnClickListener {
     47     private static final String TAG = "UsbDebuggingActivity";
     48 
     49     private CheckBox mAlwaysAllow;
     50     private UsbDisconnectedReceiver mDisconnectedReceiver;
     51     private String mKey;
     52 
     53     @Override
     54     public void onCreate(Bundle icicle) {
     55         super.onCreate(icicle);
     56 
     57         mDisconnectedReceiver = new UsbDisconnectedReceiver(this);
     58         Intent intent = getIntent();
     59         String fingerprints = intent.getStringExtra("fingerprints");
     60         mKey = intent.getStringExtra("key");
     61 
     62         if (fingerprints == null || mKey == null) {
     63             finish();
     64             return;
     65         }
     66 
     67         final AlertController.AlertParams ap = mAlertParams;
     68         ap.mTitle = getString(R.string.usb_debugging_title);
     69         ap.mIconId = com.android.internal.R.drawable.ic_dialog_usb;
     70         ap.mMessage = getString(R.string.usb_debugging_message, fingerprints);
     71         ap.mPositiveButtonText = getString(android.R.string.ok);
     72         ap.mNegativeButtonText = getString(android.R.string.cancel);
     73         ap.mPositiveButtonListener = this;
     74         ap.mNegativeButtonListener = this;
     75 
     76         // add "always allow" checkbox
     77         LayoutInflater inflater = LayoutInflater.from(ap.mContext);
     78         View checkbox = inflater.inflate(com.android.internal.R.layout.always_use_checkbox, null);
     79         mAlwaysAllow = (CheckBox)checkbox.findViewById(com.android.internal.R.id.alwaysUse);
     80         mAlwaysAllow.setText(getString(R.string.usb_debugging_always));
     81         ap.mView = checkbox;
     82 
     83         setupAlert();
     84     }
     85 
     86     private class UsbDisconnectedReceiver extends BroadcastReceiver {
     87         private final Activity mActivity;
     88         public UsbDisconnectedReceiver(Activity activity) {
     89             mActivity = activity;
     90         }
     91 
     92         @Override
     93         public void onReceive(Context content, Intent intent) {
     94             String action = intent.getAction();
     95             if (!UsbManager.ACTION_USB_STATE.equals(action)) {
     96                 return;
     97             }
     98             boolean connected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
     99             if (!connected) {
    100                 mActivity.finish();
    101             }
    102         }
    103     }
    104 
    105     @Override
    106     public void onStart() {
    107         super.onStart();
    108         IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_STATE);
    109         registerReceiver(mDisconnectedReceiver, filter);
    110     }
    111 
    112     @Override
    113     protected void onStop() {
    114         if (mDisconnectedReceiver != null) {
    115             unregisterReceiver(mDisconnectedReceiver);
    116         }
    117         super.onStop();
    118     }
    119 
    120     @Override
    121     public void onClick(DialogInterface dialog, int which) {
    122         boolean allow = (which == AlertDialog.BUTTON_POSITIVE);
    123         boolean alwaysAllow = allow && mAlwaysAllow.isChecked();
    124         try {
    125             IBinder b = ServiceManager.getService(USB_SERVICE);
    126             IUsbManager service = IUsbManager.Stub.asInterface(b);
    127             if (allow) {
    128                 service.allowUsbDebugging(alwaysAllow, mKey);
    129             } else {
    130                 service.denyUsbDebugging();
    131             }
    132         } catch (Exception e) {
    133             Log.e(TAG, "Unable to notify Usb service", e);
    134         }
    135         finish();
    136     }
    137 }
    138