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

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Revision 120 - (show annotations) (download)
Sun Mar 10 18:19:12 2013 UTC (7 years, 7 months ago) by william
File size: 10632 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
99 public static BindingSource CreateBindingSourceForData(object data)
100 {
101 if (data == null) { throw new ArgumentNullException("data", "cannot be null"); }
102 BindingSource source = new BindingSource();
103
104 IDataSourceBindable binder = (data as IDataSourceBindable);
105 if (binder == null)
106 {
107 throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", data.GetType().Name, typeof(IDataSourceBindable).Name));
108 }
109
110 object bindable = binder.CreateBindableDataSource();
111 source.DataSource = bindable;
112 return source;
113 }
114
115 #endregion
116 #endregion
117
118
119 static IXMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance> instance;
120 internal static IXMLTVRuntimeInstance GetInstance() { return instance.GetInstance(); }
121 internal static void CreateInstance(params object[] args) { instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(args); }
122
123 internal static void CreateFromInstance(object raw_instance, EventHandler<EventArgs> handler)
124 {
125 instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(raw_instance, handler);
126 //OnCreatedInstance();
127 }
128
129 internal static void OnCreatedInstance() { if (OnInstanceCreated != null) { OnInstanceCreated.Invoke(null, new EventArgs()); } }
130
131 #region IXMLTVSerializer<IXMLTVRuntimeInstance> members
132 internal static bool Serialize(string file) { return instance.Serialize(file); }
133 internal static bool Serialize(Stream stream) { return instance.Serialize(stream); }
134 internal static bool DeSerialize(string file, EventHandler<EventArgs> handler)
135 {
136 bool status;
137 var gInstance = instance.DeSerialize(file, out status);
138 CreateFromInstance(gInstance, handler);
139 return status;
140 }
141 internal static bool DeSerialize(Stream stream, EventHandler<EventArgs> handler)
142 {
143 bool status;
144 var gInstance = instance.DeSerialize(stream, out status);
145 CreateFromInstance(gInstance, handler);
146 return status;
147 }
148 #endregion
149 internal static void DestroyInstance() { instance.DestroyInstance(); }
150
151 internal static EventHandler<EventArgs> OnInstanceCreated
152 {
153 get { return instance.OnInstanceCreated; }
154 set { instance.OnInstanceCreated = value; }
155 }
156
157
158 }
159
160 internal class XMLTV<INTERFACE, CLASS> : IDestroyInstance, IXMLTV<INTERFACE, CLASS> where CLASS : class,INTERFACE,new()
161 {
162 public XMLTV()
163 {
164 instance = new CLASS();
165 }
166 public XMLTV(object raw_instance, EventHandler<EventArgs> handler)
167 {
168 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
169 if (instance != null)
170 {
171 IRuntimeInstanceLoader<CLASS> loader = (instance as IRuntimeInstanceLoader<CLASS>);
172 if (loader != null)
173 {
174 SetOnInstanceCreated(handler);
175 instance = loader.LoadFromInstance(instance);
176 }
177 }
178 }
179 public XMLTV(params object[] args)
180 {
181
182 BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
183 CultureInfo culture = CultureInfo.CurrentCulture;
184 try
185 {
186 object raw_instance = Activator.CreateInstance(typeof(CLASS), flags, null, args, culture);
187 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
188 }
189 catch (Exception ex)
190 {
191 xmltv_logger.Error.WriteLine(ex.ToString());
192
193 StringBuilder parameter_builder = new StringBuilder();
194 foreach (object arg in args)
195 {
196 Type type = arg.GetType();
197 parameter_builder.AppendFormat("({0}), ", type.FullName);
198 }
199
200 string type_parameters = parameter_builder.ToString().TrimEnd(new char[] { ',', ' ' });
201 throw new Exception(string.Format("Unable to create instance of: '{0}' with parameters: '{1}'", typeof(CLASS).Name, type_parameters), ex);
202 }
203 }
204
205 private CLASS instance;
206 #region IXMLTV<T> members
207 public IXMLTVSerializer<CLASS> CreateSerializer()
208 {
209 // we must serialize on the CLASS type, using the INTERFACE type is syntatically incorrect
210 ISerializer<CLASS> class_serializer = (instance as ISerializer<CLASS>);
211 if (class_serializer != null)
212 {
213 return class_serializer.Serializer;
214 }
215 else
216 {
217 return new XMLTVSerializer<CLASS>(instance);
218 }
219 }
220 public INTERFACE GetInstance()
221 {
222 return (INTERFACE)instance;
223 }
224 public void SetInstance(INTERFACE gInstance)
225 {
226 this.instance = gInstance as CLASS;
227 }
228 #endregion
229
230 #region IXMLTVSerializer<INTERFACE> members
231 public bool Serialize(string file) { return CreateSerializer().Serialize(file); }
232 public bool Serialize(Stream stream) { return CreateSerializer().Serialize(stream); }
233 public INTERFACE DeSerialize(string file, out bool status) { return CreateSerializer().DeSerialize(file, out status); }
234 public INTERFACE DeSerialize(Stream stream, out bool status) { return CreateSerializer().DeSerialize(stream, out status); }
235 #endregion
236 public void DestroyInstance()
237 {
238 IDestroyInstance destoyer = (instance as IDestroyInstance);
239 if (destoyer != null)
240 {
241 destoyer.DestroyInstance();
242 }
243 else
244 {
245 xmltv_logger.Error.WriteLine("Unable to call DestroyInstance() on type: '{0}'", instance.GetType().Name);
246 }
247 }
248 private void SetOnInstanceCreated(EventHandler<EventArgs> event_instance)
249 {
250 ISetCreatedInstanceEvent setter = (instance as ISetCreatedInstanceEvent);
251 if (setter != null) { setter.SetOnInstanceCreated(event_instance); }
252 }
253 private EventHandler<EventArgs> GetOnInstanceCreated()
254 {
255 IGetCreatedInstanceEvent getter = (instance as IGetCreatedInstanceEvent);
256 if (getter != null) { return getter.GetOnInstanceCreated(); }
257 return null;
258 }
259 public EventHandler<EventArgs> OnInstanceCreated
260 {
261 get { return GetOnInstanceCreated(); }
262 set { SetOnInstanceCreated(value); }
263 }
264 }
265
266 }
267
268

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