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

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Revision 142 - (show annotations) (download)
Thu Mar 14 13:13:46 2013 UTC (6 years, 9 months ago) by william
File size: 15909 byte(s)
Programs filtering:
* add support to filter by start/stop

1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using libxmltv.Interfaces;
6 using System.Collections;
7 using Enterprise.Logging;
8
9 namespace libxmltv.Core
10 {
11 public class ChannelList : List<IXMLTVChannel>, IDataSourceBindable//, IDataConverter<IChannelDefintionList>
12 {
13 private class ChannelDefintionList : List<IChannelDefintion>, IDataSourceSortable, IDataSourceFilterable, IChannelDefintionList
14 {
15 public ChannelDefintionList() { }
16 public ChannelDefintionList(List<IChannelDefintion> collection) { collection.ForEach(s => this.Add(s)); }
17 #region IDataSourceSortable members
18 public void Sort(ref object source, bool descending, params string[] args)
19 {
20 }
21 #endregion
22 #region IDataSourceFilterable members
23 public void Filter(ref object source, params string[] args)
24 {
25 }
26 #endregion
27 }
28 private class ChannelDefintion : IChannelDefintion
29 {
30 public ChannelDefintion()
31 {
32 ChannelId = string.Empty;
33 ChannelName = string.Empty;
34 }
35 public string ChannelId { get; internal set; }
36 public string ChannelName { get; internal set; }
37
38 public override string ToString()
39 {
40 StringBuilder builder = new StringBuilder();
41 Type t = typeof(ChannelDefintion);
42 var props = t.GetProperties();
43 foreach (var prop in props)
44 {
45 string name = prop.Name;
46 object value = prop.GetValue(this, null);
47 builder.AppendFormat("\t{0}: '{1}'", name, value == null ? "null" : value.ToString());
48 }
49 return builder.ToString();
50 }
51
52 }
53 //static private List<string> known_columns;
54 //static ChannelList()
55 //{
56 // known_columns = new List<string>();
57 // known_columns.Add("Id");
58 // known_columns.Add("Name");
59 //}
60 public ChannelList() { }
61
62 //public object ConvertObjectData(object source) { return this.ConvertData(source); }
63 //public IChannelDefintionList ConvertData(object source)
64 //{
65 // //object t = source;
66 // if (source.GetType() != typeof(ChannelDefintionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", source.GetType().Name, typeof(ChannelDefintionList).Name)); }
67 // //if (type != typeof(IChannelDefintionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", type.Name, typeof(IChannelDefintionList).Name)); }
68 // IChannelDefintionList t = (source as IChannelDefintionList);
69 // return t;
70 //}
71 /// <summary>
72 ///
73 /// </summary>
74 /// <param name="type"></param>
75 /// <returns></returns>
76 public object CreateBindableDataSource(out Type type)
77 {
78 type = typeof(IChannelDefintionList);
79 object bindable = new object();
80 ChannelDefintionList list = new ChannelDefintionList();
81
82 foreach (var t in this)
83 {
84 try
85 {
86 ChannelDefintion definition = new ChannelDefintion();
87 definition.ChannelId = t.Id;
88 definition.ChannelName = t.MetaData[XMLTVConstants.Channels.ChannelDisplayName].FirstOrDefault().Value.ToString();
89 xmltv_logger.Verbose.Debug.WriteLine(definition.ToString());
90 list.Add(definition);
91 }
92 catch (Exception ex) { throw ex; }
93 }
94 list = new ChannelDefintionList(list.OrderBy(s => s.ChannelName).ToList());
95 bindable = list;
96 return bindable;
97 }
98
99 }
100 public class ProgramList : List<IXMLTVProgram>, IDataSourceBindable//, IDataConverter<IProgramDefinitionList>
101 {
102 private class ProgramDefinitionList : List<IProgramDefinition>, IDataSourceSortable, IDataSourceFilterable, IProgramDefinitionList
103 {
104 public ProgramDefinitionList() { }
105 public ProgramDefinitionList(List<IProgramDefinition> collection) { collection.ForEach(s => this.Add(s)); }
106 #region IDataSourceSortable members
107 public void Sort(ref object source, bool descending, params string[] args)
108 {
109 IProgramDefinitionList list = null;
110 IOrderedEnumerable<IProgramDefinition> ordered = null;
111 try
112 {
113 list = (ProgramDefinitionList)source;
114 var col = args.First().ToString().ToLower();
115 switch (col)
116 {
117 case "channelnumber": ordered = descending ? list.OrderByDescending(s => s.ChannelNumber) : list.OrderBy(s => s.ChannelNumber); break;
118 case "channelname": ordered = descending ? list.OrderByDescending(s => s.ChannelName) : list.OrderBy(s => s.ChannelName); break;
119 case "start": ordered = descending ? list.OrderByDescending(s => s.Start) : list.OrderBy(s => s.Start); break;
120 case "stop": ordered = descending ? list.OrderByDescending(s => s.Stop) : list.OrderBy(s => s.Stop); break;
121 case "description": ordered = descending ? list.OrderByDescending(s => s.Description) : list.OrderBy(s => s.Description); break;
122 case "title": ordered = descending ? list.OrderByDescending(s => s.Title) : list.OrderBy(s => s.Title); break;
123 case "subtitle": ordered = descending ? list.OrderByDescending(s => s.SubTitle) : list.OrderBy(s => s.SubTitle); break;
124 }
125 //bool first = true;
126 foreach (var arg in args.Skip(1))
127 {
128 col = arg.ToLower();
129 switch (col)
130 {
131 case "channelnumber": ordered = descending ? ordered.ThenByDescending(s => s.ChannelNumber) : ordered.ThenBy(s => s.ChannelNumber); break;
132 case "channelname": ordered = descending ? list.OrderByDescending(s => s.ChannelName) : list.OrderBy(s => s.ChannelName); break;
133 case "start": ordered = descending ? ordered.ThenByDescending(s => s.Start) : ordered.ThenBy(s => s.Start); break;
134 case "stop": ordered = descending ? ordered.ThenByDescending(s => s.Stop) : ordered.ThenBy(s => s.Stop); break;
135 case "description": ordered = descending ? ordered.ThenByDescending(s => s.Description) : ordered.ThenBy(s => s.Description); break;
136 case "title": ordered = descending ? ordered.ThenByDescending(s => s.Title) : ordered.ThenBy(s => s.Title); break;
137 case "subtitle": ordered = descending ? ordered.ThenByDescending(s => s.SubTitle) : ordered.ThenBy(s => s.SubTitle); break;
138 }
139 }
140 list = new ProgramDefinitionList(ordered.ToList());
141 }
142 catch (Exception ex) { throw ex; }
143 if (list != null) { source = list; }
144 }
145 #endregion
146 #region IDataSourceFilterable members
147 public void Filter(ref object source, params string[] args)
148 {
149 IProgramDefinitionList list = null;
150 List<IProgramDefinition> ordered = null;
151 try
152 {
153 list = (ProgramDefinitionList)source;
154 //var col = args.First().ToString().ToLower();
155 //var data = args.().ToString().ToLower();
156
157 if (args.Count() != 2) { throw new ArgumentOutOfRangeException("args", "Excpected 2 aguments: columnname and filtertext"); }
158
159 string columnname = args[0].ToLower();
160 string filtertext = args[1].ToLower();
161
162 switch (columnname)
163 {
164 case "channelnumber": ordered = list.ToList().FindAll(s => s.ChannelNumber == Convert.ToInt32(filtertext)); break;
165 case "channelname": ordered = list.ToList().FindAll(s => s.ChannelName.ToLower().Contains(filtertext)); break;
166 case "start": ordered = list.ToList().FindAll(s => s.Start.ToLower().Contains(filtertext)); break;
167 case "stop": ordered = list.ToList().FindAll(s => s.Stop.ToLower().Contains(filtertext)); break;
168 case "description": ordered = list.ToList().FindAll(s => s.Description.ToLower().Contains(filtertext)); break;
169 case "title": ordered = list.ToList().FindAll(s => s.Title.ToLower().Contains(filtertext)); break;
170 case "subtitle": ordered = list.ToList().FindAll(s => s.SubTitle.ToLower().Contains(filtertext)); break;
171 }
172 list = new ProgramDefinitionList(ordered.ToList());
173 if (list.Count == 0)
174 {
175 list = (ProgramDefinitionList)source;
176 gLog.Warn.WriteLine("Filering by: column='{0}' with filer='{1}' returned no data",columnname, filtertext);
177 }
178 }
179 catch (Exception ex) { throw ex; }
180 if (list != null) { source = list; }
181 }
182 #endregion
183 }
184 private class ProgramDefintion : IProgramDefinition
185 {
186 public ProgramDefintion()
187 {
188 //ChannelId = string.Empty;
189 ChannelNumber = 0;
190 ChannelName = string.Empty;
191 Start = new DateTime().ToDateTimeString();
192 Stop = new DateTime().ToDateTimeString();
193 Description = string.Empty;
194 Title = string.Empty;
195 SubTitle = string.Empty;
196 }
197 //public string ChannelId { get; internal set; }
198 public int ChannelNumber { get; internal set; }
199 public string ChannelName { get; internal set; }
200 public string Start { get; internal set; }
201 public string Stop { get; internal set; }
202 public string Title { get; internal set; }
203 public string SubTitle { get; internal set; }
204 public string Description { get; internal set; }
205
206 public override string ToString()
207 {
208 StringBuilder builder = new StringBuilder();
209 Type t = typeof(ProgramDefintion);
210 var props = t.GetProperties();
211 foreach (var prop in props)
212 {
213 string name = prop.Name;
214 object value = prop.GetValue(this, null);
215 builder.AppendFormat("\t{0}: '{1}'", name, value == null ? "null" : value.ToString());
216 }
217 return builder.ToString();
218 }
219
220 }
221 public ProgramList() { }
222 //public object ConvertObjectData(object source) { return this.ConvertData(source); }
223 //public IProgramDefinitionList ConvertData(object source)
224 //{
225 // if (source.GetType() != typeof(ProgramDefinitionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", source.GetType().Name, typeof(ProgramDefinitionList).Name)); }
226 // //if (type != typeof(IProgramDefinitionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", type.Name, typeof(IProgramDefinitionList).Name)); }
227 // IProgramDefinitionList t = (source as IProgramDefinitionList);
228 // return t;
229 //}
230 /// <summary>
231 ///
232 /// </summary>
233 /// <param name="type"></param>
234 /// <returns></returns>
235 public object CreateBindableDataSource(out Type type)
236 {
237 type = typeof(IProgramDefinitionList);
238 object bindable = new object();
239 ProgramDefinitionList list = new ProgramDefinitionList();
240
241 foreach (var t in this)
242 {
243 try
244 {
245 ProgramDefintion definition = new ProgramDefintion();
246 string ChannelId = t.MetaData[XMLTVConstants.Programs.ProgramChannelId].ToString();
247 //definition.ChannelId = ChannelId;
248
249 var channels = XMLTV.GetChannels();
250 if (channels != null)
251 {
252 var channel = channels.Find(p => p.Id == ChannelId);
253 if (channel != null)
254 {
255 var channelname = channel.MetaData[XMLTVConstants.Channels.ChannelDisplayName].FirstOrDefault().Value.ToString();
256 var split = channelname.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
257 definition.ChannelNumber = Convert.ToInt32(split.First());
258 definition.ChannelName = string.IsNullOrEmpty(split.Last()) ? string.Empty : split.Last().ToString();
259
260 }
261 else
262 {
263 definition.ChannelNumber = 0;
264 }
265 }
266 else
267 {
268 definition.ChannelNumber = 0;
269 }
270 definition.Start = ((DateTime)t.MetaData[XMLTVConstants.Programs.ProgramStart]).ToDateTimeString();
271 definition.Stop = ((DateTime)t.MetaData[XMLTVConstants.Programs.ProgramStop]).ToDateTimeString();
272 definition.Description = t.MetaData[XMLTVConstants.Programs.ProgramDescription].ToString();
273 definition.Title = t.MetaData[XMLTVConstants.Programs.ProgramTitle].ToString();
274 definition.SubTitle = t.MetaData[XMLTVConstants.Programs.ProgramSubTitle].ToString();
275
276 xmltv_logger.Verbose.Debug.WriteLine(definition.ToString());
277 list.Add(definition);
278 }
279 catch (Exception ex) { throw ex; }
280 }
281
282 list = new ProgramDefinitionList(list.OrderBy(s => s.Start).ToList());
283
284 bindable = list;
285 return bindable;
286 }
287 }
288 public class ExtraList : List<IExtraMetaData>, IDataSourceBindable
289 {
290
291 public ExtraList() { }
292 /// <summary>
293 ///
294 /// </summary>
295 /// <param name="type"></param>
296 /// <returns></returns>
297 public object CreateBindableDataSource(out Type type)
298 {
299 type = typeof(object);
300 throw new NotImplementedException("Conversion of Extra MetaData to a bindable datasource has not been implemented.");
301 //object bindable = new object();
302 //return bindable;
303 }
304 //public object ConvertObjectData(object source) { return source; }
305 //public object Convert(object source)
306 //{
307 // throw new NotImplementedException("Conversion of Extra MetaData to a bindable datasource has not been implemented.");
308 //}
309 }
310 }

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