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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.Context;
     20 import android.content.Intent;
     21 import android.net.Uri;
     22 import android.os.Bundle;
     23 import android.os.Handler;
     24 import android.os.Message;
     25 import android.preference.CheckBoxPreference;
     26 import android.preference.Preference;
     27 import android.preference.Preference.OnPreferenceChangeListener;
     28 import android.preference.PreferenceManager;
     29 import android.preference.PreferenceScreen;
     30 import android.provider.Settings;
     31 import android.text.TextUtils;
     32 import android.util.Log;
     33 import android.view.LayoutInflater;
     34 import android.view.Menu;
     35 import android.view.MenuInflater;
     36 import android.view.MenuItem;
     37 import android.view.View;
     38 import android.view.View.OnClickListener;
     39 import android.view.ViewGroup;
     40 import android.widget.ImageView;
     41 import android.widget.RadioButton;
     42 import android.widget.TextView;
     43 
     44 import com.android.internal.content.PackageMonitor;
     45 import com.android.settings.HelpUtils;
     46 import com.android.settings.R;
     47 import com.android.settings.SettingsPreferenceFragment;
     48 import com.android.settings.nfc.PaymentBackend.PaymentAppInfo;
     49 
     50 import java.util.List;
     51 
     52 public class PaymentSettings extends SettingsPreferenceFragment implements
     53         OnClickListener, OnPreferenceChangeListener {
     54     public static final String TAG = "PaymentSettings";
     55     private LayoutInflater mInflater;
     56     private PaymentBackend mPaymentBackend;
     57     private final PackageMonitor mSettingsPackageMonitor = new SettingsPackageMonitor();
     58 
     59 
     60     @Override
     61     public void onCreate(Bundle icicle) {
     62         super.onCreate(icicle);
     63 
     64         mPaymentBackend = new PaymentBackend(getActivity());
     65         mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     66         setHasOptionsMenu(true);
     67     }
     68 
     69     public void refresh() {
     70         PreferenceManager manager = getPreferenceManager();
     71         PreferenceScreen screen = manager.createPreferenceScreen(getActivity());
     72 
     73         // Get all payment services
     74         List<PaymentAppInfo> appInfos = mPaymentBackend.getPaymentAppInfos();
     75         if (appInfos != null && appInfos.size() > 0) {
     76             // Add all payment apps
     77             for (PaymentAppInfo appInfo : appInfos) {
     78                 PaymentAppPreference preference =
     79                         new PaymentAppPreference(getActivity(), appInfo, this);
     80                 preference.setTitle(appInfo.caption);
     81                 if (appInfo.banner != null) {
     82                     screen.addPreference(preference);
     83                 } else {
     84                     // Ignore, no banner
     85                     Log.e(TAG, "Couldn't load banner drawable of service " + appInfo.componentName);
     86                 }
     87             }
     88         }
     89         TextView emptyText = (TextView) getView().findViewById(R.id.nfc_payment_empty_text);
     90         TextView learnMore = (TextView) getView().findViewById(R.id.nfc_payment_learn_more);
     91         ImageView emptyImage = (ImageView) getView().findViewById(R.id.nfc_payment_tap_image);
     92         if (screen.getPreferenceCount() == 0) {
     93             emptyText.setVisibility(View.VISIBLE);
     94             learnMore.setVisibility(View.VISIBLE);
     95             emptyImage.setVisibility(View.VISIBLE);
     96             getListView().setVisibility(View.GONE);
     97         } else {
     98             CheckBoxPreference foreground = new CheckBoxPreference(getActivity());
     99             boolean foregroundMode = mPaymentBackend.isForegroundMode();
    100             foreground.setPersistent(false);
    101             foreground.setTitle(getString(R.string.nfc_payment_favor_foreground));
    102             foreground.setChecked(foregroundMode);
    103             foreground.setOnPreferenceChangeListener(this);
    104             screen.addPreference(foreground);
    105             emptyText.setVisibility(View.GONE);
    106             learnMore.setVisibility(View.GONE);
    107             emptyImage.setVisibility(View.GONE);
    108             getListView().setVisibility(View.VISIBLE);
    109         }
    110         setPreferenceScreen(screen);
    111     }
    112 
    113     @Override
    114     public View onCreateView(LayoutInflater inflater, ViewGroup container,
    115             Bundle savedInstanceState) {
    116         super.onCreateView(inflater, container, savedInstanceState);
    117         View v = mInflater.inflate(R.layout.nfc_payment, container, false);
    118         TextView learnMore = (TextView) v.findViewById(R.id.nfc_payment_learn_more);
    119         learnMore.setOnClickListener(new OnClickListener() {
    120             @Override
    121             public void onClick(View v) {
    122                 String helpUrl;
    123                 if (!TextUtils.isEmpty(helpUrl = getResources().getString(
    124                         R.string.help_url_nfc_payment))) {
    125                     final Uri fullUri = HelpUtils.uriWithAddedParameters(
    126                             PaymentSettings.this.getActivity(), Uri.parse(helpUrl));
    127                     Intent intent = new Intent(Intent.ACTION_VIEW, fullUri);
    128                     intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
    129                             | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
    130                     startActivity(intent);
    131                 } else {
    132                     Log.e(TAG, "Help url not set.");
    133                 }
    134             }
    135         });
    136         return v;
    137     }
    138 
    139     @Override
    140     public void onClick(View v) {
    141         if (v.getTag() instanceof PaymentAppInfo) {
    142             PaymentAppInfo appInfo = (PaymentAppInfo) v.getTag();
    143             if (appInfo.componentName != null) {
    144                 mPaymentBackend.setDefaultPaymentApp(appInfo.componentName);
    145             }
    146             refresh();
    147         }
    148     }
    149 
    150     @Override
    151     public void onResume() {
    152         super.onResume();
    153         mSettingsPackageMonitor.register(getActivity(), getActivity().getMainLooper(), false);
    154         refresh();
    155     }
    156 
    157     @Override
    158     public void onPause() {
    159         mSettingsPackageMonitor.unregister();
    160         super.onPause();
    161     }
    162 
    163     @Override
    164     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    165         super.onCreateOptionsMenu(menu, inflater);
    166         String searchUri = Settings.Secure.getString(getContentResolver(),
    167                 Settings.Secure.PAYMENT_SERVICE_SEARCH_URI);
    168         if (!TextUtils.isEmpty(searchUri)) {
    169             MenuItem menuItem = menu.add(R.string.nfc_payment_menu_item_add_service);
    170             menuItem.setShowAsActionFlags(MenuItem.SHOW_AS_ACTION_IF_ROOM);
    171             menuItem.setIntent(new Intent(Intent.ACTION_VIEW,Uri.parse(searchUri)));
    172         }
    173     }
    174 
    175     private final Handler mHandler = new Handler() {
    176         @Override
    177         public void dispatchMessage(Message msg) {
    178             refresh();
    179         }
    180     };
    181 
    182     private class SettingsPackageMonitor extends PackageMonitor {
    183         @Override
    184         public void onPackageAdded(String packageName, int uid) {
    185            mHandler.obtainMessage().sendToTarget();
    186         }
    187 
    188         @Override
    189         public void onPackageAppeared(String packageName, int reason) {
    190             mHandler.obtainMessage().sendToTarget();
    191         }
    192 
    193         @Override
    194         public void onPackageDisappeared(String packageName, int reason) {
    195             mHandler.obtainMessage().sendToTarget();
    196         }
    197 
    198         @Override
    199         public void onPackageRemoved(String packageName, int uid) {
    200             mHandler.obtainMessage().sendToTarget();
    201         }
    202     }
    203 
    204     public static class PaymentAppPreference extends Preference {
    205         private final OnClickListener listener;
    206         private final PaymentAppInfo appInfo;
    207 
    208         public PaymentAppPreference(Context context, PaymentAppInfo appInfo,
    209                 OnClickListener listener) {
    210             super(context);
    211             setLayoutResource(R.layout.nfc_payment_option);
    212             this.appInfo = appInfo;
    213             this.listener = listener;
    214         }
    215 
    216         @Override
    217         protected void onBindView(View view) {
    218             super.onBindView(view);
    219 
    220             RadioButton radioButton = (RadioButton) view.findViewById(android.R.id.button1);
    221             radioButton.setChecked(appInfo.isDefault);
    222             radioButton.setOnClickListener(listener);
    223             radioButton.setTag(appInfo);
    224 
    225             ImageView banner = (ImageView) view.findViewById(R.id.banner);
    226             banner.setImageDrawable(appInfo.banner);
    227             banner.setOnClickListener(listener);
    228             banner.setTag(appInfo);
    229         }
    230     }
    231 
    232     @Override
    233     public boolean onPreferenceChange(Preference preference, Object newValue) {
    234         if (preference instanceof CheckBoxPreference) {
    235             mPaymentBackend.setForegroundMode(((Boolean) newValue).booleanValue());
    236             return true;
    237         } else {
    238             return false;
    239         }
    240     }
    241 }
    242