2008-11-15 Marek Habersack <mhabersack@novell.com>
[mono.git] / mcs / class / System.Web.Extensions / System.Web.UI.WebControls / TemplatePagerField.cs
1 //
2 // System.Web.UI.WebControls.TemplatePagerField
3 //
4 // Authors:
5 //   Marek Habersack (mhabersack@novell.com)
6 //
7 // (C) 2007-2008 Novell, Inc
8 //
9
10 //
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
18 // 
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
21 // 
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30 #if NET_3_5
31 using System;
32 using System.ComponentModel;
33 using System.Security.Permissions;
34 using System.Web;
35 using System.Web.UI;
36
37 namespace System.Web.UI.WebControls
38 {
39         [AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
40         [AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
41         public class TemplatePagerField : DataPagerField
42         {
43                 static object PagerCommandEvent = new object ();
44
45                 EventHandlerList events = new EventHandlerList ();
46                 
47                 public event EventHandler <DataPagerCommandEventArgs> PagerCommand {
48                         add { events.AddHandler (PagerCommandEvent, value); }
49                         remove { events.RemoveHandler (PagerCommandEvent, value); }
50                 }
51
52                 [TemplateContainerAttribute(typeof(DataPagerFieldItem), BindingDirection.TwoWay)]
53                 [BrowsableAttribute(false)]
54                 [PersistenceModeAttribute(PersistenceMode.InnerProperty)]
55                 public virtual ITemplate PagerTemplate {
56                         get;
57                         set;
58                 }
59
60                 public TemplatePagerField ()
61                 {
62                 }
63
64                 protected override void CopyProperties (DataPagerField newField)
65                 {
66                         base.CopyProperties (newField);
67
68                         var field = newField as TemplatePagerField;
69                         if (field == null)
70                                 return;
71
72                         field.PagerTemplate = PagerTemplate;
73                 }
74
75                 public override void CreateDataPagers (DataPagerFieldItem container, int startRowIndex, int maximumRows, int totalRowCount, int fieldIndex)
76                 {
77                         ITemplate pagerTemplate = PagerTemplate;
78                         if (pagerTemplate == null)
79                                 return;
80
81                         pagerTemplate.InstantiateIn (container);
82                 }
83
84                 protected override DataPagerField CreateField ()
85                 {
86                         return new TemplatePagerField ();
87                 }
88
89                 public override void HandleEvent (CommandEventArgs e)
90                 {
91                         var args = e as DataPagerCommandEventArgs;
92                         if (args == null)
93                                 return;
94                         
95                         DataPager pager = DataPager;
96                         var eventArgs = new DataPagerCommandEventArgs (this, pager.TotalRowCount, e, args.Item);
97                         OnPagerCommand (eventArgs);
98
99                         int newStartRowIndex = eventArgs.NewStartRowIndex;
100                         if (newStartRowIndex < 0)
101                                 return;
102
103                         pager.SetPageProperties (newStartRowIndex, eventArgs.NewMaximumRows, true);
104                 }
105
106                 protected virtual void OnPagerCommand (DataPagerCommandEventArgs e)
107                 {
108                         EventHandler <DataPagerCommandEventArgs> eh = events [PagerCommandEvent] as EventHandler <DataPagerCommandEventArgs>;
109                         if (eh != null)
110                                 eh (this, e);
111                 }
112         }
113 }
114 #endif