class/System.Web/System.Web.UI.WebControls/HyperLinkColumn.cs

   1 //
   2 // System.Web.UI.WebControls.HyperLinkColumn.cs
   3 //
   4 // Author: Duncan Mak (duncan@ximian.com)
   5 //
   6 // Permission is hereby granted, free of charge, to any person obtaining
   7 // a copy of this software and associated documentation files (the
   8 // "Software"), to deal in the Software without restriction, including
   9 // without limitation the rights to use, copy, modify, merge, publish,
  10 // distribute, sublicense, and/or sell copies of the Software, and to
  11 // permit persons to whom the Software is furnished to do so, subject to
  12 // the following conditions:
  13 //
  14 // The above copyright notice and this permission notice shall be
  15 // included in all copies or substantial portions of the Software.
  16 //
  17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  21 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24 //
  25 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
  26 //
  27
  28 using System.ComponentModel;
  29 using System.Data;
  30 using System.Security.Permissions;
  31
  32 namespace System.Web.UI.WebControls {
  33
  34         // CAS
  35         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  36         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  37         public class HyperLinkColumn : DataGridColumn
  38         {
  39                 public HyperLinkColumn ()
  40                 {
  41                 }
  42
  43                 [DefaultValue("")]
  44                 [WebSysDescription ("")]
  45                 [WebCategory ("Misc")]
  46                 public virtual string DataNavigateUrlField {
  47                         get {
  48                                 return ViewState.GetString ("DataNavigateUrlField", String.Empty);
  49                         }
  50                         set { ViewState ["DataNavigateUrlField"] = value; }
  51                 }
  52
  53                 [DefaultValue("")]
  54                 [Description("The formatting applied to the value bound to the NavigateUrl property.")]
  55                 [WebCategory ("Misc")]
  56                 public virtual string DataNavigateUrlFormatString {
  57                         get {
  58                                 return ViewState.GetString ("DataNavigateUrlFormatString", String.Empty);
  59                         }
  60                         set { ViewState ["DataNavigateUrlFormatString"] = value; }
  61                 }
  62
  63                 [DefaultValue("")]
  64                 [WebSysDescription ("")]
  65                 [WebCategory ("Misc")]
  66                 public virtual string DataTextField {
  67                         get {
  68                                 return ViewState.GetString ("DataTextField", String.Empty);
  69                         }
  70                         set { ViewState ["DataTextField"] = value; }
  71                 }
  72
  73                 [Description("The formatting applied to the value bound to the Text property.")]
  74                 [DefaultValue("")]
  75                 [WebCategory ("Misc")]
  76                 public virtual string DataTextFormatString {
  77                         get {
  78                                 return ViewState.GetString ("DataTextFormatString", String.Empty);
  79                         }
  80                         set { ViewState ["DataTextFormatString"] = value; }
  81                 }
  82
  83                 [DefaultValue("")]
  84                 [WebSysDescription ("")]
  85                 [WebCategory ("Misc")]
  86                 public virtual string NavigateUrl {
  87                         get {
  88                                 return ViewState.GetString ("NavigateUrl", String.Empty);
  89                         }
  90                         set { ViewState ["NavigateUrl"] = value; }
  91                 }
  92
  93                 [DefaultValue("")]
  94                 [WebSysDescription ("")]
  95                 [WebCategory ("Misc")]
  96                 public virtual string Target {
  97                         get {
  98                                 return ViewState.GetString ("Target", String.Empty);
  99                         }
 100                         set { ViewState ["Target"] = value; }
 101                 }
 102
 103                 [DefaultValue("")]
 104                 [WebSysDescription ("")]
 105                 [WebCategory ("Misc")]
 106                 public virtual string Text {
 107                         get {
 108                                 return ViewState.GetString ("Text", String.Empty);
 109                         }
 110                         set { ViewState ["Text"] = value; }
 111                 }
 112
 113                 protected virtual string FormatDataNavigateUrlValue (object value)
 114                 {
 115                         string format = DataNavigateUrlFormatString;
 116                         if (format == "")
 117                                 format = null;
 118
 119                         return DataBinder.FormatResult (value, format);
 120                 }
 121
 122                 protected virtual string FormatDataTextValue (object value)
 123                 {
 124                         string format = DataTextFormatString;
 125                         if (format == "")
 126                                 format = null;
 127
 128                         return DataBinder.FormatResult (value, format);
 129                 }
 130
 131                 public override void Initialize ()
 132                 {
 133                         base.Initialize ();
 134                 }
 135
 136                 void ItemDataBinding (object sender, EventArgs args)
 137                 {
 138                         TableCell cell = (TableCell)sender;
 139                         HyperLink ctrl = (HyperLink)cell.Controls[0];
 140                         DataGridItem item = (DataGridItem)cell.NamingContainer;
 141
 142                         if (DataNavigateUrlField != "")
 143                                 ctrl.NavigateUrl = FormatDataNavigateUrlValue (DataBinder.Eval (item.DataItem, DataNavigateUrlField));
 144                         else
 145                                 ctrl.NavigateUrl = NavigateUrl;
 146
 147                         if (DataTextField != "")
 148                                 ctrl.Text = FormatDataTextValue (DataBinder.Eval (item.DataItem, DataTextField));
 149                         else
 150                                 ctrl.Text = Text;
 151
 152                         ctrl.Target = Target;
 153                 }
 154
 155                 public override void InitializeCell (TableCell cell, int column_index, ListItemType item_type)
 156                 {
 157                         base.InitializeCell (cell, column_index, item_type);
 158
 159                         switch (item_type)
 160                         {
 161                         case ListItemType.Separator:
 162                         case ListItemType.Pager:
 163                         case ListItemType.Footer:
 164                         case ListItemType.Header: {
 165                                 // Base handles header and footer, dunno about the others
 166                                 return;
 167                         }
 168                         case ListItemType.Item:
 169                         case ListItemType.EditItem:
 170                         case ListItemType.AlternatingItem:
 171                                 cell.DataBinding += new EventHandler(ItemDataBinding);
 172                                 cell.Controls.Add (new HyperLink ());
 173                                 break;
 174                         }
 175                 }
 176         }
 177 }