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

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Revision 252 - (hide annotations) (download)
Wed Apr 3 05:28:26 2013 UTC (6 years, 7 months ago) by william
File size: 17916 byte(s)
Ensure when filtering Start/Stop times for Programs, don't sort by the string value; instead sort it using DateTime.Parse(string)

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 william 141 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 william 126
52     }
53 william 122 //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 william 120 public ChannelList() { }
61    
62 william 128 //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 william 120 {
78 william 128 type = typeof(IChannelDefintionList);
79 william 120 object bindable = new object();
80 william 126 ChannelDefintionList list = new ChannelDefintionList();
81 william 122
82     foreach (var t in this)
83     {
84     try
85     {
86     ChannelDefintion definition = new ChannelDefintion();
87     definition.ChannelId = t.Id;
88 william 141 definition.ChannelName = t.MetaData[XMLTVConstants.Channels.ChannelDisplayName].FirstOrDefault().Value.ToString();
89     xmltv_logger.Verbose.Debug.WriteLine(definition.ToString());
90 william 122 list.Add(definition);
91     }
92     catch (Exception ex) { throw ex; }
93     }
94 william 126 list = new ChannelDefintionList(list.OrderBy(s => s.ChannelName).ToList());
95 william 122 bindable = list;
96 william 120 return bindable;
97     }
98 william 128
99 william 120 }
100 william 128 public class ProgramList : List<IXMLTVProgram>, IDataSourceBindable//, IDataConverter<IProgramDefinitionList>
101 william 120 {
102 william 128 private class ProgramDefinitionList : List<IProgramDefinition>, IDataSourceSortable, IDataSourceFilterable, IProgramDefinitionList
103 william 121 {
104 william 126 public ProgramDefinitionList() { }
105 william 128 public ProgramDefinitionList(List<IProgramDefinition> collection) { collection.ForEach(s => this.Add(s)); }
106 william 126 #region IDataSourceSortable members
107 william 131 public void Sort(ref object source, bool descending, params string[] args)
108 william 126 {
109 william 131 IProgramDefinitionList list = null;
110 william 130 IOrderedEnumerable<IProgramDefinition> ordered = null;
111 william 126 try
112     {
113     list = (ProgramDefinitionList)source;
114 william 131 var col = args.First().ToString().ToLower();
115     switch (col)
116 william 126 {
117 william 137 case "channelnumber": ordered = descending ? list.OrderByDescending(s => s.ChannelNumber) : list.OrderBy(s => s.ChannelNumber); break;
118 william 131 case "channelname": ordered = descending ? list.OrderByDescending(s => s.ChannelName) : list.OrderBy(s => s.ChannelName); break;
119 william 252 case "start": ordered = descending ? list.OrderByDescending(s => DateTime.Parse(s.Start)) : list.OrderBy(s => DateTime.Parse(s.Start)); break;
120     case "stop": ordered = descending ? list.OrderByDescending(s => DateTime.Parse(s.Stop)) : list.OrderBy(s => DateTime.Parse(s.Stop)); break;
121 william 131 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 william 227 case "rating": ordered = descending ? list.OrderByDescending(s => s.Rating) : list.OrderBy(s => s.Rating); break;
125 william 131 }
126     //bool first = true;
127     foreach (var arg in args.Skip(1))
128     {
129     col = arg.ToLower();
130 william 130 switch (col)
131     {
132 william 137 case "channelnumber": ordered = descending ? ordered.ThenByDescending(s => s.ChannelNumber) : ordered.ThenBy(s => s.ChannelNumber); break;
133     case "channelname": ordered = descending ? list.OrderByDescending(s => s.ChannelName) : list.OrderBy(s => s.ChannelName); break;
134 william 252 case "start": ordered = descending ? ordered.ThenByDescending(s => DateTime.Parse(s.Start)) : ordered.ThenBy(s => DateTime.Parse(s.Start)); break;
135     case "stop": ordered = descending ? ordered.ThenByDescending(s => DateTime.Parse(s.Stop)) : ordered.ThenBy(s => DateTime.Parse(s.Stop)); break;
136 william 131 case "description": ordered = descending ? ordered.ThenByDescending(s => s.Description) : ordered.ThenBy(s => s.Description); break;
137     case "title": ordered = descending ? ordered.ThenByDescending(s => s.Title) : ordered.ThenBy(s => s.Title); break;
138     case "subtitle": ordered = descending ? ordered.ThenByDescending(s => s.SubTitle) : ordered.ThenBy(s => s.SubTitle); break;
139 william 227 case "rating": ordered = descending ? ordered.ThenByDescending(s => s.Rating) : ordered.ThenBy(s => s.Rating); break;
140 william 130 }
141 william 126 }
142 william 131 list = new ProgramDefinitionList(ordered.ToList());
143 william 126 }
144     catch (Exception ex) { throw ex; }
145     if (list != null) { source = list; }
146     }
147     #endregion
148     #region IDataSourceFilterable members
149     public void Filter(ref object source, params string[] args)
150     {
151 william 132 IProgramDefinitionList list = null;
152     List<IProgramDefinition> ordered = null;
153     try
154     {
155     list = (ProgramDefinitionList)source;
156     //var col = args.First().ToString().ToLower();
157     //var data = args.().ToString().ToLower();
158    
159     if (args.Count() != 2) { throw new ArgumentOutOfRangeException("args", "Excpected 2 aguments: columnname and filtertext"); }
160    
161     string columnname = args[0].ToLower();
162     string filtertext = args[1].ToLower();
163    
164     switch (columnname)
165     {
166 william 138 case "channelnumber": ordered = list.ToList().FindAll(s => s.ChannelNumber == Convert.ToInt32(filtertext)); break;
167 william 132 case "channelname": ordered = list.ToList().FindAll(s => s.ChannelName.ToLower().Contains(filtertext)); break;
168 william 142 case "start": ordered = list.ToList().FindAll(s => s.Start.ToLower().Contains(filtertext)); break;
169     case "stop": ordered = list.ToList().FindAll(s => s.Stop.ToLower().Contains(filtertext)); break;
170 william 132 case "description": ordered = list.ToList().FindAll(s => s.Description.ToLower().Contains(filtertext)); break;
171     case "title": ordered = list.ToList().FindAll(s => s.Title.ToLower().Contains(filtertext)); break;
172     case "subtitle": ordered = list.ToList().FindAll(s => s.SubTitle.ToLower().Contains(filtertext)); break;
173 william 227 case "rating": ordered = list.ToList().FindAll(s => s.Rating.ToLower().Contains(filtertext)); break;
174 william 132 }
175     list = new ProgramDefinitionList(ordered.ToList());
176 william 134 if (list.Count == 0)
177     {
178     list = (ProgramDefinitionList)source;
179     gLog.Warn.WriteLine("Filering by: column='{0}' with filer='{1}' returned no data",columnname, filtertext);
180     }
181 william 132 }
182     catch (Exception ex) { throw ex; }
183     if (list != null) { source = list; }
184 william 126 }
185     #endregion
186     }
187 william 181 public class ProgramDefintion : IProgramDefinition, IEquatable<IProgramDefinition>
188 william 126 {
189 william 122 public ProgramDefintion()
190     {
191 william 123 //ChannelId = string.Empty;
192 william 137 ChannelNumber = 0;
193 william 122 ChannelName = string.Empty;
194 william 141 Start = new DateTime().ToDateTimeString();
195     Stop = new DateTime().ToDateTimeString();
196 william 122 Description = string.Empty;
197     Title = string.Empty;
198     SubTitle = string.Empty;
199 william 227 Rating = string.Empty;
200 william 122 }
201 william 123 //public string ChannelId { get; internal set; }
202 william 165 public int ChannelNumber { get; set; }
203     public string ChannelName { get; set; }
204     public string Start { get; set; }
205     public string Stop { get; set; }
206     public string Title { get; set; }
207     public string SubTitle { get; set; }
208     public string Description { get; set; }
209 william 227 public string Rating { get; set; }
210 william 141 public override string ToString()
211     {
212     StringBuilder builder = new StringBuilder();
213     Type t = typeof(ProgramDefintion);
214     var props = t.GetProperties();
215     foreach (var prop in props)
216     {
217     string name = prop.Name;
218     object value = prop.GetValue(this, null);
219     builder.AppendFormat("\t{0}: '{1}'", name, value == null ? "null" : value.ToString());
220     }
221     return builder.ToString();
222     }
223 william 181
224     public bool Equals(IProgramDefinition other)
225     {
226     return this.ToString() == other.ToString();
227     }
228     public override bool Equals(object obj)
229     {
230     if (obj == null) { throw new ArgumentNullException("obj", "Object to compare cannot be null"); }
231     if (obj.GetType().IsAssignableFrom(typeof(IProgramDefinition)))
232     {
233     return this.Equals((IProgramDefinition)obj);
234     }
235     return base.Equals(obj);
236     }
237     public override int GetHashCode()
238     {
239     return this.ToString().GetHashCode();
240     }
241 william 121 }
242 william 120 public ProgramList() { }
243 william 128 //public object ConvertObjectData(object source) { return this.ConvertData(source); }
244     //public IProgramDefinitionList ConvertData(object source)
245     //{
246     // if (source.GetType() != typeof(ProgramDefinitionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", source.GetType().Name, typeof(ProgramDefinitionList).Name)); }
247     // //if (type != typeof(IProgramDefinitionList)) { throw new InvalidCastException(string.Format("Cannot cast: '{0}' to '{1}'", type.Name, typeof(IProgramDefinitionList).Name)); }
248     // IProgramDefinitionList t = (source as IProgramDefinitionList);
249     // return t;
250     //}
251     /// <summary>
252     ///
253     /// </summary>
254     /// <param name="type"></param>
255     /// <returns></returns>
256     public object CreateBindableDataSource(out Type type)
257 william 120 {
258 william 128 type = typeof(IProgramDefinitionList);
259 william 120 object bindable = new object();
260 william 126 ProgramDefinitionList list = new ProgramDefinitionList();
261 william 121
262 william 122 foreach (var t in this)
263     {
264     try
265     {
266     ProgramDefintion definition = new ProgramDefintion();
267 william 123 string ChannelId = t.MetaData[XMLTVConstants.Programs.ProgramChannelId].ToString();
268     //definition.ChannelId = ChannelId;
269 william 121
270 william 122 var channels = XMLTV.GetChannels();
271     if (channels != null)
272     {
273 william 123 var channel = channels.Find(p => p.Id == ChannelId);
274 william 122 if (channel != null)
275     {
276 william 137 var channelname = channel.MetaData[XMLTVConstants.Channels.ChannelDisplayName].FirstOrDefault().Value.ToString();
277     var split = channelname.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
278     definition.ChannelNumber = Convert.ToInt32(split.First());
279     definition.ChannelName = string.IsNullOrEmpty(split.Last()) ? string.Empty : split.Last().ToString();
280    
281 william 122 }
282     else
283     {
284 william 137 definition.ChannelNumber = 0;
285 william 122 }
286     }
287     else
288     {
289 william 137 definition.ChannelNumber = 0;
290 william 122 }
291 william 141 definition.Start = ((DateTime)t.MetaData[XMLTVConstants.Programs.ProgramStart]).ToDateTimeString();
292     definition.Stop = ((DateTime)t.MetaData[XMLTVConstants.Programs.ProgramStop]).ToDateTimeString();
293 william 122 definition.Description = t.MetaData[XMLTVConstants.Programs.ProgramDescription].ToString();
294     definition.Title = t.MetaData[XMLTVConstants.Programs.ProgramTitle].ToString();
295     definition.SubTitle = t.MetaData[XMLTVConstants.Programs.ProgramSubTitle].ToString();
296 william 141
297 william 227
298     var extras = t.GetExtraMetaData();
299     foreach (var extra in extras)
300     {
301     if (extra.Name.ToLower() == "rating")
302     {
303     var root = extra.AsXElement();
304     var child = root.Descendants("value").FirstOrDefault();
305     if (child == null) { throw new NullReferenceException("Expected rating element to have a child elemented named: value"); }
306     string value = child.Value;
307     definition.Rating = value;
308     }
309     }
310 william 141 xmltv_logger.Verbose.Debug.WriteLine(definition.ToString());
311 william 122 list.Add(definition);
312     }
313     catch (Exception ex) { throw ex; }
314     }
315 william 123
316 william 252 list = new ProgramDefinitionList(list.OrderBy(s => DateTime.Parse(s.Start)).ToList());
317 william 123
318 william 122 bindable = list;
319 william 120 return bindable;
320     }
321     }
322     public class ExtraList : List<IExtraMetaData>, IDataSourceBindable
323     {
324 william 121
325 william 120 public ExtraList() { }
326 william 128 /// <summary>
327     ///
328     /// </summary>
329     /// <param name="type"></param>
330     /// <returns></returns>
331     public object CreateBindableDataSource(out Type type)
332 william 120 {
333 william 128 type = typeof(object);
334 william 124 throw new NotImplementedException("Conversion of Extra MetaData to a bindable datasource has not been implemented.");
335     //object bindable = new object();
336     //return bindable;
337 william 120 }
338 william 128 //public object ConvertObjectData(object source) { return source; }
339     //public object Convert(object source)
340     //{
341     // throw new NotImplementedException("Conversion of Extra MetaData to a bindable datasource has not been implemented.");
342     //}
343 william 120 }
344     }

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