NetTiers 中Repeater的应用

NetTiers中的一个Log实体下的Repeater
1 using System;
2 using System.Collections.Generic;
3 using System.Text;
4 using System.Web.UI;
5 using System.ComponentModel;
6 using System.Web.UI.Design.WebControls;
7 using System.Web.UI.Design;
8
9 namespace PigitalPaper.Web.UI
10 {
11 /**/ /// <summary>
12 /// A designer class for a strongly typed repeater <c> LogRepeater </c>
13 /// </summary>
14 public class LogRepeaterDesigner : System.Web.UI.Design.ControlDesigner
15 {
16 /**/ /// <summary>
17 /// Initializes a new instance of the <see cref="T:LogRepeaterDesigner"/> class.
18 /// </summary>
19 public LogRepeaterDesigner()
20 {
21 }
22
23 /**/ /// <summary>
24 /// Initializes the control designer and loads the specified component.
25 /// </summary>
26 /// <param name="component"> The control being designed. </param>
27 public override void Initialize(IComponent component)
28 {
29 if ( ! (component is LogRepeater))
30 {
31 throw new ArgumentException( " Component is not a LogRepeater. " );
32 }
33 base .Initialize(component);
34 base .SetViewFlags(ViewFlags.TemplateEditing, true );
35 }
36
37
38 /**/ /// <summary>
39 /// Generate HTML for the designer
40 /// </summary>
41 /// <returns> a string of design time HTML </returns>
42 public override string GetDesignTimeHtml()
43 {
44
45 // Get the instance this designer applies to
46 //
47 LogRepeater z = (LogRepeater)Component;
48 z.DataBind();
49
50 return base .GetDesignTimeHtml();
51
52 // return z.RenderAtDesignTime();
53
54 // ControlCollection c = z.Controls;
55 // Totem z = (Totem) Component;
56 // Totem z = (Totem) Component;
57 // return ("<div style='border: 1px gray dotted; background-color: lightgray'><b>TagStat :</b> zae | qsdds</div>");
58
59 }
60 }
61
62 /**/ /// <summary>
63 /// A strongly typed repeater control for the <c cref="LogRepeater"></c> Type.
64 /// </summary>
65 [Designer( typeof (LogRepeaterDesigner))]
66 [ParseChildren( true )]
67 [ToolboxData( " <{0}:LogRepeater runat=\ " server\ " ></{0}:LogRepeater> " )]
68 public class LogRepeater : Control, System.Web.UI.INamingContainer
69 {
70 /**/ /// <summary>
71 /// Initializes a new instance of the <see cref="T:LogRepeater"/> class.
72 /// </summary>
73 public LogRepeater()
74 {
75 }
76
77 /**/ /// <summary>
78 /// Gets a <see cref="T:System.Web.UI.ControlCollection"></see> object that represents the child controls for a specified server control in the UI hierarchy.
79 /// </summary>
80 /// <value></value>
81 /// <returns> The collection of child controls for the specified server control. </returns>
82 public override ControlCollection Controls
83 {
84 get
85 {
86 this .EnsureChildControls();
87 return base .Controls;
88 }
89 }
90
91 private ITemplate m_headerTemplate;
92 /**/ /// <summary>
93 /// Gets or sets the header template.
94 /// </summary>
95 /// <value> The header template. </value>
96 [Browsable( false )]
97 [TemplateContainer( typeof (LogItem))]
98 [PersistenceMode(PersistenceMode.InnerDefaultProperty)]
99 public ITemplate HeaderTemplate
100 {
101 get { return m_headerTemplate; }
102 set { m_headerTemplate = value; }
103 }
104
105 private ITemplate m_itemTemplate;
106 /**/ /// <summary>
107 /// Gets or sets the item template.
108 /// </summary>
109 /// <value> The item template. </value>
110 [Browsable( false )]
111 [TemplateContainer( typeof (LogItem))]
112 [PersistenceMode(PersistenceMode.InnerDefaultProperty)]
113 public ITemplate ItemTemplate
114 {
115 get { return m_itemTemplate; }
116 set { m_itemTemplate = value; }
117 }
118
119
120 private ITemplate m_altenateItemTemplate;
121 /**/ /// <summary>
122 /// Gets or sets the alternating item template.
123 /// </summary>
124 /// <value> The alternating item template. </value>
125 [Browsable( false )]
126 [TemplateContainer( typeof (LogItem))]
127 [PersistenceMode(PersistenceMode.InnerDefaultProperty)]
128 public ITemplate AlternatingItemTemplate
129 {
130 get { return m_altenateItemTemplate; }
131 set { m_altenateItemTemplate = value; }
132 }
133
134 private ITemplate m_footerTemplate;
135 /**/ /// <summary>
136 /// Gets or sets the footer template.
137 /// </summary>
138 /// <value> The footer template. </value>
139 [Browsable( false )]
140 [TemplateContainer( typeof (LogItem))]
141 [PersistenceMode(PersistenceMode.InnerDefaultProperty)]
142 public ITemplate FooterTemplate
143 {
144 get { return m_footerTemplate; }
145 set { m_footerTemplate = value; }
146 }
147
148 /**/ /// <summary>
149 /// Gets or sets the data source ID.
150 /// </summary>
151 /// <value> The data source ID. </value>
152 [Category( " Data " )]
153 public virtual string DataSourceID
154 {
155 get
156 {
157 if (ViewState[ " DataSourceID " ] == null )
158 {
159 return string .Empty;
160 }
161 return ( string )ViewState[ " DataSourceID " ];
162 }
163 set
164 {
165 ViewState[ " DataSourceID " ] = value;
166 }
167 }
168
169 // [Category("Data")]
170 // public virtual string DataMember
171 // {
172 // get
173 // {
174 // if (ViewState["DataMember"] == null)
175 // {
176 // return string.Empty;
177 // }
178 // return (string)ViewState["DataMember"];
179 // }
180 // set
181 // {
182 // ViewState["DataMember"] = value;
183 // }
184 // }
185
186 // private ProductDataSourceView m_currentView;
187
188 System.Collections.IEnumerable m_currentView;
189 /**/ /// <summary>
190 /// Connects to data source view.
191 /// </summary>
192 /// <returns> an IEnumerable of DataSourceView </returns>
193 private System.Collections.IEnumerable ConnectToDataSourceView()
194 {
195 if (m_currentView == null )
196 {
197 PigitalPaper.Web.Data.LogDataSource datasource = null ;
198 Control ctl = this .Page.FindControl(DataSourceID);
199 if (ctl == null )
200 {
201 throw new System.Web.HttpException( " Datasource does not exists " );
202 }
203 datasource = ctl as PigitalPaper.Web.Data.LogDataSource;
204 if (datasource == null )
205 {
206 throw new System.Web.HttpException( " Datasource must be data control " );
207 }
208
209 System.Collections.IEnumerable dsv = datasource.GetEntityList(); // this.DataMember);
210 if (dsv == null )
211 {
212 throw new System.Web.HttpException( " View not found " );
213 }
214 m_currentView = dsv;
215 }
216 return m_currentView;
217 }
218
219 /**/ /// <summary>
220 /// Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.
221 /// </summary>
222 protected override void CreateChildControls()
223 {
224 if (ChildControlsCreated)
225 {
226 return ;
227 }
228 Controls.Clear();
229
230 System.Collections.IEnumerable datas = (System.Collections.IEnumerable)ConnectToDataSourceView();
231
232 if (datas != null )
233 {
234 if (m_headerTemplate != null )
235 {
236 Control headerItem = new Control();
237 m_headerTemplate.InstantiateIn(headerItem);
238 Controls.Add(headerItem);
239 }
240
241 int pos = 0 ;
242 foreach ( object o in datas)
243 {
244 PigitalPaper.Entities.Log entity = o as PigitalPaper.Entities.Log;
245 LogItem container = new LogItem(entity);
246
247 if (m_itemTemplate != null && (pos % 2 ) == 0 )
248 {
249 m_itemTemplate.InstantiateIn(container);
250 }
251 else
252 {
253 if (m_altenateItemTemplate != null )
254 {
255 m_altenateItemTemplate.InstantiateIn(container);
256 }
257 else if (m_itemTemplate != null )
258 {
259 m_itemTemplate.InstantiateIn(container);
260 }
261 else
262 {
263 // no template !!!
264 }
265 }
266 Controls.Add(container);
267 pos ++ ;
268 }
269
270 if (m_footerTemplate != null )
271 {
272 Control footerItem = new Control();
273 m_footerTemplate.InstantiateIn(footerItem);
274 Controls.Add(footerItem);
275 }
276 ChildControlsCreated = true ;
277 }
278 }
279
280 /**/ /// <summary>
281 /// Raises the <see cref="E:System.Web.UI.Control.PreRender"></see> event.
282 /// </summary>
283 /// <param name="e"> An <see cref="T:System.EventArgs"></see> object that contains the event data. </param>
284 protected override void OnPreRender(EventArgs e)
285 {
286 base .DataBind();
287 }
288
289 Design time #region Design time
290 /**/ /// <summary>
291 /// Renders at design time.
292 /// </summary>
293 /// <returns> a string of the Designed HTML </returns>
294 internal string RenderAtDesignTime()
295 {
296 return " TODO create a designer " ;
297 }
298
299 #endregion
300 }
301
302 /**/ /// <summary>
303 /// A wrapper type for the entity
304 /// </summary>
305 [System.ComponentModel.ToolboxItem( false )]
306 public class LogItem : System.Web.UI.Control, System.Web.UI.INamingContainer
307 {
308 private PigitalPaper.Entities.Log _entity;
309
310 /**/ /// <summary>
311 /// Initializes a new instance of the <see cref="T:LogItem"/> class.
312 /// </summary>
313 public LogItem()
314 : base ()
315 { }
316
317 /**/ /// <summary>
318 /// Initializes a new instance of the <see cref="T:LogItem"/> class.
319 /// </summary>
320 public LogItem(PigitalPaper.Entities.Log entity)
321 : base ()
322 {
323 _entity = entity;
324 }
325
326 /**/ /// <summary>
327 /// Gets the Id
328 /// </summary>
329 /// <value> The Id. </value>
330 [System.ComponentModel.Bindable( true )]
331 public System.Int32 Id
332 {
333 get { return _entity.Id; }
334 }
335 /**/ /// <summary>
336 /// Gets the Userid
337 /// </summary>
338 /// <value> The Userid. </value>
339 [System.ComponentModel.Bindable( true )]
340 public System.Int32 Userid
341 {
342 get { return _entity.Userid; }
343 }
344 /**/ /// <summary>
345 /// Gets the Ip
346 /// </summary>
347 /// <value> The Ip. </value>
348 [System.ComponentModel.Bindable( true )]
349 public System.String Ip
350 {
351 get { return _entity.Ip; }
352 }
353 /**/ /// <summary>
354 /// Gets the ModuleId
355 /// </summary>
356 /// <value> The ModuleId. </value>
357 [System.ComponentModel.Bindable( true )]
358 public System.String ModuleId
359 {
360 get { return _entity.ModuleId; }
361 }
362 /**/ /// <summary>
363 /// Gets the ProType
364 /// </summary>
365 /// <value> The ProType. </value>
366 [System.ComponentModel.Bindable( true )]
367 public System.String ProType
368 {
369 get { return _entity.ProType; }
370 }
371 /**/ /// <summary>
372 /// Gets the SetDate
373 /// </summary>
374 /// <value> The SetDate. </value>
375 [System.ComponentModel.Bindable( true )]
376 public System.DateTime SetDate
377 {
378 get { return _entity.SetDate; }
379 }
380 /**/ /// <summary>
381 /// Gets the Remark
382 /// </summary>
383 /// <value> The Remark. </value>
384 [System.ComponentModel.Bindable( true )]
385 public System.String Remark
386 {
387 get { return _entity.Remark; }
388 }
389
390 }
391 }
392