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

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Revision 126 - (show annotations) (download)
Sun Mar 10 20:19:33 2013 UTC (7 years, 7 months ago) by william
File size: 11849 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 object CreateDataSourceFromObject(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) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", data.GetType().Name, typeof(IDataSourceBindable).Name)); }
106 object bindable = binder.CreateBindableDataSource();
107 //source.DataSource = bindable;
108 //return source;
109 return bindable;
110 }
111
112 public static void CreateFilterFromDataSource(ref object source, params string[] args)
113 {
114 if (source == null) { throw new ArgumentNullException("source", "cannot be null"); }
115 if (args == null) { throw new ArgumentNullException("args", "cannot be null"); }
116 IDataSourceFilterable filter = (source as IDataSourceFilterable);
117 if (filter == null) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", source.GetType().Name, typeof(IDataSourceFilterable).Name)); }
118 filter.Filter(ref source,args);
119 }
120 public static void CreateSorterFromDataSource(ref object source, params string[] args)
121 {
122 if (source == null) { throw new ArgumentNullException("source", "cannot be null"); }
123 if (args == null) { throw new ArgumentNullException("args", "cannot be null"); }
124 IDataSourceSortable sorter = (source as IDataSourceSortable);
125 if (sorter == null) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", source.GetType().Name, typeof(IDataSourceSortable).Name)); }
126 sorter.Sort(ref source, args);
127 }
128 #endregion
129 #endregion
130
131
132 static IXMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance> instance;
133 internal static IXMLTVRuntimeInstance GetInstance() { return instance.GetInstance(); }
134 internal static void CreateInstance(params object[] args) { instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(args); }
135
136 internal static void CreateFromInstance(object raw_instance, EventHandler<EventArgs> handler)
137 {
138 instance = new XMLTV<IXMLTVRuntimeInstance, XMLTVRuntimeInstance>(raw_instance, handler);
139 //OnCreatedInstance();
140 }
141
142 internal static void OnCreatedInstance() { if (OnInstanceCreated != null) { OnInstanceCreated.Invoke(null, new EventArgs()); } }
143
144 #region IXMLTVSerializer<IXMLTVRuntimeInstance> members
145 internal static bool Serialize(string file) { return instance.Serialize(file); }
146 internal static bool Serialize(Stream stream) { return instance.Serialize(stream); }
147 internal static bool DeSerialize(string file, EventHandler<EventArgs> handler)
148 {
149 bool status;
150 var gInstance = instance.DeSerialize(file, out status);
151 CreateFromInstance(gInstance, handler);
152 return status;
153 }
154 internal static bool DeSerialize(Stream stream, EventHandler<EventArgs> handler)
155 {
156 bool status;
157 var gInstance = instance.DeSerialize(stream, out status);
158 CreateFromInstance(gInstance, handler);
159 return status;
160 }
161 #endregion
162 internal static void DestroyInstance() { instance.DestroyInstance(); }
163
164 internal static EventHandler<EventArgs> OnInstanceCreated
165 {
166 get { return instance.OnInstanceCreated; }
167 set { instance.OnInstanceCreated = value; }
168 }
169
170
171 }
172
173 internal class XMLTV<INTERFACE, CLASS> : IDestroyInstance, IXMLTV<INTERFACE, CLASS> where CLASS : class,INTERFACE,new()
174 {
175 public XMLTV()
176 {
177 instance = new CLASS();
178 }
179 public XMLTV(object raw_instance, EventHandler<EventArgs> handler)
180 {
181 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
182 if (instance != null)
183 {
184 IRuntimeInstanceLoader<CLASS> loader = (instance as IRuntimeInstanceLoader<CLASS>);
185 if (loader != null)
186 {
187 SetOnInstanceCreated(handler);
188 instance = loader.LoadFromInstance(instance);
189 }
190 }
191 }
192 public XMLTV(params object[] args)
193 {
194
195 BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
196 CultureInfo culture = CultureInfo.CurrentCulture;
197 try
198 {
199 object raw_instance = Activator.CreateInstance(typeof(CLASS), flags, null, args, culture);
200 instance = (CLASS)Convert.ChangeType(raw_instance, typeof(CLASS));
201 }
202 catch (Exception ex)
203 {
204 xmltv_logger.Error.WriteLine(ex.ToString());
205
206 StringBuilder parameter_builder = new StringBuilder();
207 foreach (object arg in args)
208 {
209 Type type = arg.GetType();
210 parameter_builder.AppendFormat("({0}), ", type.FullName);
211 }
212
213 string type_parameters = parameter_builder.ToString().TrimEnd(new char[] { ',', ' ' });
214 throw new Exception(string.Format("Unable to create instance of: '{0}' with parameters: '{1}'", typeof(CLASS).Name, type_parameters), ex);
215 }
216 }
217
218 private CLASS instance;
219 #region IXMLTV<T> members
220 public IXMLTVSerializer<CLASS> CreateSerializer()
221 {
222 // we must serialize on the CLASS type, using the INTERFACE type is syntatically incorrect
223 ISerializer<CLASS> class_serializer = (instance as ISerializer<CLASS>);
224 if (class_serializer != null)
225 {
226 return class_serializer.Serializer;
227 }
228 else
229 {
230 return new XMLTVSerializer<CLASS>(instance);
231 }
232 }
233 public INTERFACE GetInstance()
234 {
235 return (INTERFACE)instance;
236 }
237 public void SetInstance(INTERFACE gInstance)
238 {
239 this.instance = gInstance as CLASS;
240 }
241 #endregion
242
243 #region IXMLTVSerializer<INTERFACE> members
244 public bool Serialize(string file) { return CreateSerializer().Serialize(file); }
245 public bool Serialize(Stream stream) { return CreateSerializer().Serialize(stream); }
246 public INTERFACE DeSerialize(string file, out bool status) { return CreateSerializer().DeSerialize(file, out status); }
247 public INTERFACE DeSerialize(Stream stream, out bool status) { return CreateSerializer().DeSerialize(stream, out status); }
248 #endregion
249 public void DestroyInstance()
250 {
251 IDestroyInstance destoyer = (instance as IDestroyInstance);
252 if (destoyer != null)
253 {
254 destoyer.DestroyInstance();
255 }
256 else
257 {
258 xmltv_logger.Error.WriteLine("Unable to call DestroyInstance() on type: '{0}'", instance.GetType().Name);
259 }
260 }
261 private void SetOnInstanceCreated(EventHandler<EventArgs> event_instance)
262 {
263 ISetCreatedInstanceEvent setter = (instance as ISetCreatedInstanceEvent);
264 if (setter != null) { setter.SetOnInstanceCreated(event_instance); }
265 }
266 private EventHandler<EventArgs> GetOnInstanceCreated()
267 {
268 IGetCreatedInstanceEvent getter = (instance as IGetCreatedInstanceEvent);
269 if (getter != null) { return getter.GetOnInstanceCreated(); }
270 return null;
271 }
272 public EventHandler<EventArgs> OnInstanceCreated
273 {
274 get { return GetOnInstanceCreated(); }
275 set { SetOnInstanceCreated(value); }
276 }
277 }
278
279 }
280
281

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