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.Preference;
26 import android.preference.Preference.OnPreferenceChangeListener;
27 import android.preference.PreferenceManager;
28 import android.preference.PreferenceScreen;
29 import android.preference.SwitchPreference;
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
onCreate(Bundle icicle)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 
refresh()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             SwitchPreference foreground = new SwitchPreference(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
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)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
onClick(View v)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
onResume()151     public void onResume() {
152         super.onResume();
153         mSettingsPackageMonitor.register(getActivity(), getActivity().getMainLooper(), false);
154         refresh();
155     }
156 
157     @Override
onPause()158     public void onPause() {
159         mSettingsPackageMonitor.unregister();
160         super.onPause();
161     }
162 
163     @Override
onCreateOptionsMenu(Menu menu, MenuInflater inflater)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
onPackageAdded(String packageName, int uid)184         public void onPackageAdded(String packageName, int uid) {
185            mHandler.obtainMessage().sendToTarget();
186         }
187 
188         @Override
onPackageAppeared(String packageName, int reason)189         public void onPackageAppeared(String packageName, int reason) {
190             mHandler.obtainMessage().sendToTarget();
191         }
192 
193         @Override
onPackageDisappeared(String packageName, int reason)194         public void onPackageDisappeared(String packageName, int reason) {
195             mHandler.obtainMessage().sendToTarget();
196         }
197 
198         @Override
onPackageRemoved(String packageName, int uid)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 
PaymentAppPreference(Context context, PaymentAppInfo appInfo, OnClickListener listener)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
onBindView(View view)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
onPreferenceChange(Preference preference, Object newValue)233     public boolean onPreferenceChange(Preference preference, Object newValue) {
234         if (preference instanceof SwitchPreference) {
235             mPaymentBackend.setForegroundMode(((Boolean) newValue).booleanValue());
236             return true;
237         } else {
238             return false;
239         }
240     }
241 }
242