Merge pull request #1508 from slluis/fix-20966
[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 using System;
31 using System.ComponentModel;
32 using System.Security.Permissions;
33 using System.Web;
34 using System.Web.UI;
35
36 namespace System.Web.UI.WebControls
37 {
38         [AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
39         [AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
40         public class TemplatePagerField : DataPagerField
41         {
42                 static object PagerCommandEvent = new object ();
43
44                 EventHandlerList events = new EventHandlerList ();
45                 
46                 public event EventHandler <DataPagerCommandEventArgs> PagerCommand {
47                         add { events.AddHandler (PagerCommandEvent, value); }
48                         remove { events.RemoveHandler (PagerCommandEvent, value); }
49                 }
50
51                 [TemplateContainerAttribute(typeof(DataPagerFieldItem), BindingDirection.TwoWay)]
52                 [BrowsableAttribute(false)]
53                 [PersistenceModeAttribute(PersistenceMode.InnerProperty)]
54                 public virtual ITemplate PagerTemplate {
55                         get;
56                         set;
57                 }
58
59                 public TemplatePagerField ()
60                 {
61                 }
62
63                 protected override void CopyProperties (DataPagerField newField)
64                 {
65                         base.CopyProperties (newField);
66
67                         var field = newField as TemplatePagerField;
68                         if (field == null)
69                                 return;
70
71                         field.PagerTemplate = PagerTemplate;
72                 }
73
74                 public override void CreateDataPagers (DataPagerFieldItem container, int startRowIndex, int maximumRows, int totalRowCount, int fieldIndex)
75                 {
76                         ITemplate pagerTemplate = PagerTemplate;
77                         if (pagerTemplate == null)
78                                 return;
79
80                         pagerTemplate.InstantiateIn (container);
81                 }
82
83                 protected override DataPagerField CreateField ()
84                 {
85                         return new TemplatePagerField ();
86                 }
87
88                 public override void HandleEvent (CommandEventArgs e)
89                 {
90                         var args = e as DataPagerCommandEventArgs;
91                         if (args == null)
92                                 return;
93                         
94                         DataPager pager = DataPager;
95                         var eventArgs = new DataPagerCommandEventArgs (this, pager.TotalRowCount, e, args.Item);
96                         OnPagerCommand (eventArgs);
97
98                         int newStartRowIndex = eventArgs.NewStartRowIndex;
99                         if (newStartRowIndex < 0)
100                                 return;
101
102                         pager.SetPageProperties (newStartRowIndex, eventArgs.NewMaximumRows, true);
103                 }
104
105                 protected virtual void OnPagerCommand (DataPagerCommandEventArgs e)
106                 {
107                         EventHandler <DataPagerCommandEventArgs> eh = events [PagerCommandEvent] as EventHandler <DataPagerCommandEventArgs>;
108                         if (eh != null)
109                                 eh (this, e);
110                 }
111         }
112 }