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

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Revision 131 - (hide annotations) (download)
Wed Mar 13 15:16:59 2013 UTC (6 years, 8 months ago) by william
File size: 11645 byte(s)
XMLTV Program(s):
* single column asending/descending support

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 120
8     namespace libxmltv.Core
9     {
10 william 128 public class ChannelList : List<IXMLTVChannel>, IDataSourceBindable//, IDataConverter<IChannelDefintionList>
11 william 120 {
12 william 128 private class ChannelDefintionList : List<IChannelDefintion>, IDataSourceSortable, IDataSourceFilterable, IChannelDefintionList
13 william 121 {
14 william 126 public ChannelDefintionList() { }
15 william 128 public ChannelDefintionList(List<IChannelDefintion> collection) { collection.ForEach(s => this.Add(s)); }
16 william 125 #region IDataSourceSortable members
17 william 131 public void Sort(ref object source, bool descending, params string[] args)
18 william 125 {
19     }
20     #endregion
21     #region IDataSourceFilterable members
22 william 126 public void Filter(ref object source, params string[] args)
23 william 125 {
24     }
25     #endregion
26 william 121 }
27 william 128 private class ChannelDefintion : IChannelDefintion
28 william 126 {
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 william 122 //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 william 120 public ChannelList() { }
47    
48 william 128 //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 william 120 {
64 william 128 type = typeof(IChannelDefintionList);
65 william 120 object bindable = new object();
66 william 126 ChannelDefintionList list = new ChannelDefintionList();
67 william 122
68     foreach (var t in this)
69     {
70     try
71     {
72     ChannelDefintion definition = new ChannelDefintion();
73     definition.ChannelId = t.Id;
74 william 123 definition.ChannelName = t.MetaData[XMLTVConstants.Channels.ChannelDisplayName].FirstOrDefault().Value.ToString();
75 william 122 list.Add(definition);
76     }
77     catch (Exception ex) { throw ex; }
78     }
79 william 126 list = new ChannelDefintionList(list.OrderBy(s => s.ChannelName).ToList());
80 william 122 bindable = list;
81 william 120 return bindable;
82     }
83 william 128
84 william 120 }
85 william 128 public class ProgramList : List<IXMLTVProgram>, IDataSourceBindable//, IDataConverter<IProgramDefinitionList>
86 william 120 {
87 william 128 private class ProgramDefinitionList : List<IProgramDefinition>, IDataSourceSortable, IDataSourceFilterable, IProgramDefinitionList
88 william 121 {
89 william 126 public ProgramDefinitionList() { }
90 william 128 public ProgramDefinitionList(List<IProgramDefinition> collection) { collection.ForEach(s => this.Add(s)); }
91 william 126 #region IDataSourceSortable members
92 william 131 public void Sort(ref object source, bool descending, params string[] args)
93 william 126 {
94 william 131 IProgramDefinitionList list = null;
95 william 130 IOrderedEnumerable<IProgramDefinition> ordered = null;
96 william 126 try
97     {
98     list = (ProgramDefinitionList)source;
99 william 131 var col = args.First().ToString().ToLower();
100     switch (col)
101 william 126 {
102 william 131 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 william 130 switch (col)
114     {
115 william 131 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 william 130 }
122 william 126 }
123 william 131 list = new ProgramDefinitionList(ordered.ToList());
124 william 126 }
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     }
133     #endregion
134     }
135 william 128 private class ProgramDefintion : IProgramDefinition
136 william 126 {
137 william 122 public ProgramDefintion()
138     {
139 william 123 //ChannelId = string.Empty;
140 william 122 ChannelName = string.Empty;
141     Start = new DateTime();
142     Stop = new DateTime();
143     Description = string.Empty;
144     Title = string.Empty;
145     SubTitle = string.Empty;
146     }
147 william 123 //public string ChannelId { get; internal set; }
148 william 122 public string ChannelName { get; internal set; }
149     public DateTime Start { get; internal set; }
150     public DateTime Stop { get; internal set; }
151     public string Title { get; internal set; }
152     public string SubTitle { get; internal set; }
153 william 125 public string Description { get; internal set; }
154    
155 william 126
156 william 121 }
157 william 120 public ProgramList() { }
158 william 128 //public object ConvertObjectData(object source) { return this.ConvertData(source); }
159     //public IProgramDefinitionList ConvertData(object source)
160     //{
161     // if (source.GetType() != typeof(ProgramDefinitionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", source.GetType().Name, typeof(ProgramDefinitionList).Name)); }
162     // //if (type != typeof(IProgramDefinitionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", type.Name, typeof(IProgramDefinitionList).Name)); }
163     // IProgramDefinitionList t = (source as IProgramDefinitionList);
164     // return t;
165     //}
166     /// <summary>
167     ///
168     /// </summary>
169     /// <param name="type"></param>
170     /// <returns></returns>
171     public object CreateBindableDataSource(out Type type)
172 william 120 {
173 william 128 type = typeof(IProgramDefinitionList);
174 william 120 object bindable = new object();
175 william 126 ProgramDefinitionList list = new ProgramDefinitionList();
176 william 121
177 william 122 foreach (var t in this)
178     {
179     try
180     {
181     ProgramDefintion definition = new ProgramDefintion();
182 william 123 string ChannelId = t.MetaData[XMLTVConstants.Programs.ProgramChannelId].ToString();
183     //definition.ChannelId = ChannelId;
184 william 121
185 william 122 var channels = XMLTV.GetChannels();
186     if (channels != null)
187     {
188 william 123 var channel = channels.Find(p => p.Id == ChannelId);
189 william 122 if (channel != null)
190     {
191     definition.ChannelName = channel.MetaData[XMLTVConstants.Channels.ChannelDisplayName].FirstOrDefault().Value.ToString();
192     }
193     else
194     {
195     definition.ChannelName = string.Empty;
196     }
197     }
198     else
199     {
200     definition.ChannelName = string.Empty;
201     }
202     definition.Start = (DateTime)t.MetaData[XMLTVConstants.Programs.ProgramStart];
203     definition.Stop = (DateTime)t.MetaData[XMLTVConstants.Programs.ProgramStop];
204     definition.Description = t.MetaData[XMLTVConstants.Programs.ProgramDescription].ToString();
205     definition.Title = t.MetaData[XMLTVConstants.Programs.ProgramTitle].ToString();
206     definition.SubTitle = t.MetaData[XMLTVConstants.Programs.ProgramSubTitle].ToString();
207     list.Add(definition);
208     }
209     catch (Exception ex) { throw ex; }
210     }
211 william 123
212 william 126 list = new ProgramDefinitionList(list.OrderBy(s => s.Start).ToList());
213 william 123
214 william 122 bindable = list;
215 william 120 return bindable;
216     }
217     }
218     public class ExtraList : List<IExtraMetaData>, IDataSourceBindable
219     {
220 william 121
221 william 120 public ExtraList() { }
222 william 128 /// <summary>
223     ///
224     /// </summary>
225     /// <param name="type"></param>
226     /// <returns></returns>
227     public object CreateBindableDataSource(out Type type)
228 william 120 {
229 william 128 type = typeof(object);
230 william 124 throw new NotImplementedException("Conversion of Extra MetaData to a bindable datasource has not been implemented.");
231     //object bindable = new object();
232     //return bindable;
233 william 120 }
234 william 128 //public object ConvertObjectData(object source) { return source; }
235     //public object Convert(object source)
236     //{
237     // throw new NotImplementedException("Conversion of Extra MetaData to a bindable datasource has not been implemented.");
238     //}
239 william 120 }
240     }

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