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      1 /*
      2  * Copyright (C) 2013 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.settings.nfc;
     18 
     19 import android.content.ComponentName;
     20 import android.content.DialogInterface;
     21 import android.content.Intent;
     22 import android.content.pm.ApplicationInfo;
     23 import android.content.pm.PackageManager;
     24 import android.content.pm.ResolveInfo;
     25 import android.content.pm.PackageManager.NameNotFoundException;
     26 import android.nfc.cardemulation.ApduServiceInfo;
     27 import android.nfc.cardemulation.CardEmulation;
     28 import android.nfc.cardemulation.HostApduService;
     29 import android.nfc.cardemulation.OffHostApduService;
     30 import android.os.Bundle;
     31 import android.util.Log;
     32 
     33 import com.android.internal.app.AlertActivity;
     34 import com.android.internal.app.AlertController;
     35 import com.android.settings.R;
     36 import com.android.settings.nfc.PaymentBackend.PaymentAppInfo;
     37 
     38 import java.io.IOException;
     39 import java.util.List;
     40 
     41 import org.xmlpull.v1.XmlPullParserException;
     42 
     43 public final class PaymentDefaultDialog extends AlertActivity implements
     44         DialogInterface.OnClickListener {
     45 
     46     public static final String TAG = "PaymentDefaultDialog";
     47 
     48     private PaymentBackend mBackend;
     49     private ComponentName mNewDefault;
     50 
     51     @Override
     52     protected void onCreate(Bundle savedInstanceState) {
     53         super.onCreate(savedInstanceState);
     54         mBackend = new PaymentBackend(this);
     55         Intent intent = getIntent();
     56         ComponentName component = intent.getParcelableExtra(
     57                 CardEmulation.EXTRA_SERVICE_COMPONENT);
     58         String category = intent.getStringExtra(CardEmulation.EXTRA_CATEGORY);
     59 
     60         setResult(RESULT_CANCELED);
     61         if (!buildDialog(component, category)) {
     62             finish();
     63         }
     64 
     65     }
     66 
     67     @Override
     68     public void onClick(DialogInterface dialog, int which) {
     69         switch (which) {
     70             case BUTTON_POSITIVE:
     71                 mBackend.setDefaultPaymentApp(mNewDefault);
     72                 setResult(RESULT_OK);
     73                 break;
     74             case BUTTON_NEGATIVE:
     75                 break;
     76         }
     77     }
     78 
     79     private boolean buildDialog(ComponentName component, String category) {
     80         if (component == null || category == null) {
     81             Log.e(TAG, "Component or category are null");
     82             return false;
     83         }
     84 
     85         if (!CardEmulation.CATEGORY_PAYMENT.equals(category)) {
     86             Log.e(TAG, "Don't support defaults for category " + category);
     87             return false;
     88         }
     89 
     90         // Check if passed in service exists
     91         PaymentAppInfo requestedPaymentApp = null;
     92         PaymentAppInfo defaultPaymentApp = null;
     93 
     94         List<PaymentAppInfo> services = mBackend.getPaymentAppInfos();
     95         for (PaymentAppInfo service : services) {
     96             if (component.equals(service.componentName)) {
     97                 requestedPaymentApp = service;
     98             }
     99             if (service.isDefault) {
    100                 defaultPaymentApp = service;
    101             }
    102         }
    103 
    104         if (requestedPaymentApp == null) {
    105             Log.e(TAG, "Component " + component + " is not a registered payment service.");
    106             return false;
    107         }
    108 
    109         // Get current mode and default component
    110         ComponentName defaultComponent = mBackend.getDefaultPaymentApp();
    111         if (defaultComponent != null && defaultComponent.equals(component)) {
    112             Log.e(TAG, "Component " + component + " is already default.");
    113             return false;
    114         }
    115 
    116         mNewDefault = component;
    117         // Compose dialog; get
    118         final AlertController.AlertParams p = mAlertParams;
    119         p.mTitle = getString(R.string.nfc_payment_set_default_label);
    120         if (defaultPaymentApp == null) {
    121             String formatString = getString(R.string.nfc_payment_set_default);
    122             String msg = String.format(formatString, requestedPaymentApp.caption);
    123             p.mMessage = msg;
    124         } else {
    125             String formatString = getString(R.string.nfc_payment_set_default_instead_of);
    126             String msg = String.format(formatString, requestedPaymentApp.caption,
    127                     defaultPaymentApp.caption);
    128             p.mMessage = msg;
    129         }
    130         p.mPositiveButtonText = getString(R.string.yes);
    131         p.mNegativeButtonText = getString(R.string.no);
    132         p.mPositiveButtonListener = this;
    133         p.mNegativeButtonListener = this;
    134         setupAlert();
    135 
    136         return true;
    137     }
    138 
    139 }
    140