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

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Revision 132 - (show annotations) (download)
Wed Mar 13 15:39:18 2013 UTC (6 years, 8 months ago) by william
File size: 13321 byte(s)
XMLTV Program(s):
* filtering by: channel, title, subtitle, and description have been implemented

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

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