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
17package com.android.calendar;
18
19import android.content.Context;
20import android.content.res.AssetManager;
21import android.os.Bundle;
22import android.util.Log;
23import android.view.Menu;
24import android.view.MenuItem;
25
26import java.io.FileNotFoundException;
27import java.io.IOException;
28import java.io.InputStream;
29import java.util.Properties;
30
31
32/*
33 * Skeleton for additional options in the AllInOne menu.
34 */
35public class ExtensionsFactory {
36
37    private static String TAG = "ExtensionsFactory";
38
39    // Config filename for mappings of various class names to their custom
40    // implementations.
41    private static String EXTENSIONS_PROPERTIES = "calendar_extensions.properties";
42
43    private static String ALL_IN_ONE_MENU_KEY = "AllInOneMenuExtensions";
44    private static String CLOUD_NOTIFICATION_KEY = "CloudNotificationChannel";
45    private static String ANALYTICS_LOGGER_KEY = "AnalyticsLogger";
46
47    private static Properties sProperties = new Properties();
48    private static AllInOneMenuExtensionsInterface sAllInOneMenuExtensions = null;
49    private static AnalyticsLogger sAnalyticsLogger = null;
50
51    public static void init(AssetManager assetManager) {
52        try {
53            InputStream fileStream = assetManager.open(EXTENSIONS_PROPERTIES);
54            sProperties.load(fileStream);
55            fileStream.close();
56        } catch (FileNotFoundException e) {
57            // No custom extensions. Ignore.
58            Log.d(TAG, "No custom extensions.");
59        } catch (IOException e) {
60            Log.d(TAG, e.toString());
61        }
62    }
63
64    private static <T> T createInstance(String className) {
65        try {
66            Class<?> c = Class.forName(className);
67            return (T) c.newInstance();
68        } catch (ClassNotFoundException e) {
69            Log.e(TAG, className + ": unable to create instance.", e);
70        } catch (IllegalAccessException e) {
71            Log.e(TAG, className + ": unable to create instance.", e);
72        } catch (InstantiationException e) {
73            Log.e(TAG, className + ": unable to create instance.", e);
74        }
75        return null;
76    }
77
78    public static AllInOneMenuExtensionsInterface getAllInOneMenuExtensions() {
79        if ((sAllInOneMenuExtensions != null)) {
80            return sAllInOneMenuExtensions;
81        }
82
83        String className = sProperties.getProperty(ALL_IN_ONE_MENU_KEY);
84        if (className != null) {
85            sAllInOneMenuExtensions = createInstance(className);
86        } else {
87            Log.d(TAG, ALL_IN_ONE_MENU_KEY + " not found in properties file.");
88        }
89
90        if (sAllInOneMenuExtensions == null) {
91            sAllInOneMenuExtensions = new AllInOneMenuExtensionsInterface() {
92                @Override
93                public Integer getExtensionMenuResource(Menu menu) {
94                    return null;
95                }
96
97                @Override
98                public boolean handleItemSelected(MenuItem item, Context context) {
99                    return false;
100                }
101            };
102        }
103        return sAllInOneMenuExtensions;
104    }
105
106    public static CloudNotificationBackplane getCloudNotificationBackplane() {
107        CloudNotificationBackplane cnb = null;
108
109        String className = sProperties.getProperty(CLOUD_NOTIFICATION_KEY);
110        if (className != null) {
111            cnb = createInstance(className);
112        } else {
113            Log.d(TAG, CLOUD_NOTIFICATION_KEY + " not found in properties file.");
114        }
115
116        if (cnb == null) {
117            cnb = new CloudNotificationBackplane() {
118                @Override
119                public boolean open(Context context) {
120                    return true;
121                }
122
123                @Override
124                public boolean subscribeToGroup(String senderId, String account, String groupId)
125                        throws IOException {
126                    return true;}
127
128                @Override
129                public void send(String to, String msgId, Bundle data) {
130                }
131
132                @Override
133                public void close() {
134                }
135            };
136        }
137
138        return cnb;
139    }
140
141    public static AnalyticsLogger getAnalyticsLogger(Context context) {
142        if (sAnalyticsLogger != null) {
143            return sAnalyticsLogger;
144        }
145
146        String className = sProperties.getProperty(ANALYTICS_LOGGER_KEY);
147        if (className != null) {
148            sAnalyticsLogger = createInstance(className);
149        } else {
150            Log.d(TAG, ANALYTICS_LOGGER_KEY + " not found in properties file.");
151        }
152
153        if (sAnalyticsLogger == null) {
154            sAnalyticsLogger = new AnalyticsLogger() {
155                @Override
156                public boolean initialize(Context context) {
157                    return true;
158                }
159
160                @Override
161                public void trackView(String name) {
162                }
163            };
164        }
165
166        sAnalyticsLogger.initialize(context);
167        return sAnalyticsLogger;
168    }
169}
170