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

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Revision 137 - (hide annotations) (download)
Wed Mar 13 16:59:40 2013 UTC (6 years, 8 months ago) by william
File size: 14518 byte(s)

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

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