/[xmltv_parser]/trunk/libxmltv/Core/XMLTV.cs
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Contents of /trunk/libxmltv/Core/XMLTV.cs

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Revision 118 - (show annotations) (download)
Sun Mar 10 17:41:52 2013 UTC (7 years, 2 months ago) by william
File size: 9951 byte(s)

1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using libxmltv.Interfaces;
6 using System.ComponentModel;
7 using System.IO;
8 using System.Reflection;
9 using System.Globalization;
10 using System.Windows.Forms;
11
12 namespace libxmltv.Core
13 {
14 /// <summary>
15 /// Main class: Creates the XMLTV Loader
16 /// </summary>
17 public static class XMLTV
18 {
19 static XMLTV()
20 {
21 xmltv_logger.Initialize();
22 if (instance == null)
23 {
24 instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>();
25 }
26 }
27
28 #region public members
29 #region save data
30 public static void Save(string file)
31 {
32 if (!Serialize(file))
33 {
34 MessageBox.Show("Failed to save data - check log", "Failed to save data", MessageBoxButtons.OK, MessageBoxIcon.Error);
35 return;
36 }
37 MessageBox.Show("Successfully saved data", "Successfully saved data", MessageBoxButtons.OK, MessageBoxIcon.Information);
38 }
39 public static void Save(Stream stream)
40 {
41 if (!Serialize(stream))
42 {
43 MessageBox.Show("Failed to save data - check log", "Failed to save data", MessageBoxButtons.OK, MessageBoxIcon.Error);
44 return;
45 }
46 MessageBox.Show("Successfully saved data", "Successfully saved data", MessageBoxButtons.OK, MessageBoxIcon.Information);
47 }
48 #endregion
49 #region load data
50 public static void Load(string file) { Load(file, null); }
51 public static void Load(string file, EventHandler<EventArgs> handler)
52 {
53 if (!DeSerialize(file, handler))
54 {
55 MessageBox.Show("Failed to load data - check log", "Failed to load data", MessageBoxButtons.OK, MessageBoxIcon.Error);
56 return;
57 }
58 MessageBox.Show("Successfully loaded data", "Successfully loaded data", MessageBoxButtons.OK, MessageBoxIcon.Information);
59 OnCreatedInstance();
60
61 }
62 public static void Load(Stream stream) { Load(stream, null); }
63 public static void Load(Stream stream, EventHandler<EventArgs> handler)
64 {
65 if (!DeSerialize(stream, handler))
66 {
67 MessageBox.Show("Failed to load data - check log", "Failed to load data", MessageBoxButtons.OK, MessageBoxIcon.Error);
68 return;
69 }
70 MessageBox.Show("Successfully loaded data", "Successfully loaded data", MessageBoxButtons.OK, MessageBoxIcon.Information);
71 OnCreatedInstance();
72 }
73 #endregion
74 #region Create/Destroy
75 public static void Create(params object[] args) { CreateInstance(args); }
76 public static void Destroy() { DestroyInstance(); }
77 #endregion
78
79 #region Get Data
80 public static IXMLTVSource GetSource()
81 {
82 var gInstance = GetInstance();
83 var list = gInstance.Source;
84 return list;
85 }
86 public static List<IXMLTVChannel> GetChannels()
87 {
88 var gInstance = GetInstance();
89 var list = gInstance.Channels;
90 return list;
91 }
92 public static List<IXMLTVProgram> GetPrograms()
93 {
94 var gInstance = GetInstance();
95 var list = gInstance.Programs;
96 return list;
97 }
98 #endregion
99 #endregion
100
101
102 static IXMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance> instance;
103 internal static IXMLTVRuntimeInstance GetInstance() { return instance.GetInstance(); }
104 internal static void CreateInstance(params object[] args) { instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(args); }
105
106 internal static void CreateFromInstance(object raw_instance, EventHandler<EventArgs> handler)
107 {
108 instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(raw_instance, handler);
109 //OnCreatedInstance();
110 }
111
112 internal static void OnCreatedInstance() { if (OnInstanceCreated != null) { OnInstanceCreated.Invoke(null, new EventArgs()); } }
113
114 #region IXMLTVSerializer<IXMLTVRuntimeInstance> members
115 internal static bool Serialize(string file) { return instance.Serialize(file); }
116 internal static bool Serialize(Stream stream) { return instance.Serialize(stream); }
117 internal static bool DeSerialize(string file, EventHandler<EventArgs> handler)
118 {
119 bool status;
120 var gInstance = instance.DeSerialize(file, out status);
121 CreateFromInstance(gInstance, handler);
122 return status;
123 }
124 internal static bool DeSerialize(Stream stream, EventHandler<EventArgs> handler)
125 {
126 bool status;
127 var gInstance = instance.DeSerialize(stream, out status);
128 CreateFromInstance(gInstance, handler);
129 return status;
130 }
131 #endregion
132 internal static void DestroyInstance() { instance.DestroyInstance(); }
133
134 internal static EventHandler<EventArgs> OnInstanceCreated
135 {
136 get { return instance.OnInstanceCreated; }
137 set { instance.OnInstanceCreated = value; }
138 }
139
140
141 }
142
143 internal class XMLTV<INTERFACE, CLASS> : IDestroyInstance, IXMLTV<INTERFACE, CLASS> where CLASS : class,INTERFACE,new()
144 {
145 public XMLTV()
146 {
147 instance = new CLASS();
148 }
149 public XMLTV(object raw_instance, EventHandler<EventArgs> handler)
150 {
151 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
152 if (instance != null)
153 {
154 IRuntimeInstanceLoader<CLASS> loader = (instance as IRuntimeInstanceLoader<CLASS>);
155 if (loader != null)
156 {
157 SetOnInstanceCreated(handler);
158 instance = loader.LoadFromInstance(instance);
159 }
160 }
161 }
162 public XMLTV(params object[] args)
163 {
164
165 BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
166 CultureInfo culture = CultureInfo.CurrentCulture;
167 try
168 {
169 object raw_instance = Activator.CreateInstance(typeof(CLASS), flags, null, args, culture);
170 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
171 }
172 catch (Exception ex)
173 {
174 xmltv_logger.Error.WriteLine(ex.ToString());
175
176 StringBuilder parameter_builder = new StringBuilder();
177 foreach (object arg in args)
178 {
179 Type type = arg.GetType();
180 parameter_builder.AppendFormat("({0}), ", type.FullName);
181 }
182
183 string type_parameters = parameter_builder.ToString().TrimEnd(new char[] { ',', ' ' });
184 throw new Exception(string.Format("Unable to create instance of: '{0}' with parameters: '{1}'", typeof(CLASS).Name, type_parameters), ex);
185 }
186 }
187
188 private CLASS instance;
189 #region IXMLTV<T> members
190 public IXMLTVSerializer<CLASS> CreateSerializer()
191 {
192 // we must serialize on the CLASS type, using the INTERFACE type is syntatically incorrect
193 ISerializer<CLASS> class_serializer = (instance as ISerializer<CLASS>);
194 if (class_serializer != null)
195 {
196 return class_serializer.Serializer;
197 }
198 else
199 {
200 return new XMLTVSerializer<CLASS>(instance);
201 }
202 }
203 public INTERFACE GetInstance()
204 {
205 return (INTERFACE)instance;
206 }
207 public void SetInstance(INTERFACE gInstance)
208 {
209 this.instance = gInstance as CLASS;
210 }
211 #endregion
212
213 #region IXMLTVSerializer<INTERFACE> members
214 public bool Serialize(string file) { return CreateSerializer().Serialize(file); }
215 public bool Serialize(Stream stream) { return CreateSerializer().Serialize(stream); }
216 public INTERFACE DeSerialize(string file, out bool status) { return CreateSerializer().DeSerialize(file, out status); }
217 public INTERFACE DeSerialize(Stream stream, out bool status) { return CreateSerializer().DeSerialize(stream, out status); }
218 #endregion
219 public void DestroyInstance()
220 {
221 IDestroyInstance destoyer = (instance as IDestroyInstance);
222 if (destoyer != null)
223 {
224 destoyer.DestroyInstance();
225 }
226 else
227 {
228 xmltv_logger.Error.WriteLine("Unable to call DestroyInstance() on type: '{0}'", instance.GetType().Name);
229 }
230 }
231 private void SetOnInstanceCreated(EventHandler<EventArgs> event_instance)
232 {
233 ISetCreatedInstanceEvent setter = (instance as ISetCreatedInstanceEvent);
234 if (setter != null) { setter.SetOnInstanceCreated(event_instance); }
235 }
236 private EventHandler<EventArgs> GetOnInstanceCreated()
237 {
238 IGetCreatedInstanceEvent getter = (instance as IGetCreatedInstanceEvent);
239 if (getter != null) { return getter.GetOnInstanceCreated(); }
240 return null;
241 }
242 public EventHandler<EventArgs> OnInstanceCreated
243 {
244 get { return GetOnInstanceCreated(); }
245 set { SetOnInstanceCreated(value); }
246 }
247 }
248
249 }
250
251

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