mcs/class/System.Web/System.Web.UI.WebControls/EditCommandColumn.cs

   1
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
   6 // without limitation the rights to use, copy, modify, merge, publish,
   7 // distribute, sublicense, and/or sell copies of the Software, and to
   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 /**
  23  * Namespace: System.Web.UI.WebControls
  24  * Class:     EditCommandColumn
  25  *
  26  * Author:  Gaurav Vaish
  27  * Maintainer: gvaish@iitk.ac.in
  28  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
  29  * Implementation: yes
  30  * Status:  100%
  31  *
  32  * (C) Gaurav Vaish (2002)
  33  */
  34
  35 using System;
  36 using System.Web;
  37 using System.Web.UI;
  38
  39 namespace System.Web.UI.WebControls
  40 {
  41         public class EditCommandColumn : DataGridColumn
  42         {
  43                 public EditCommandColumn(): base()
  44                 {
  45                 }
  46
  47                 public virtual ButtonColumnType ButtonType
  48                 {
  49                         get
  50                         {
  51                                 object o = ViewState["ButtonType"];
  52                                 if(o != null)
  53                                 {
  54                                         return (ButtonColumnType)o;
  55                                 }
  56                                 return ButtonColumnType.LinkButton;
  57                         }
  58                         set
  59                         {
  60                                 if(!Enum.IsDefined(typeof(ButtonColumnType), value))
  61                                 {
  62                                         throw new ArgumentException();
  63                                 }
  64                                 ViewState["ButtonType"] = value;
  65                                 OnColumnChanged();
  66                         }
  67                 }
  68
  69                 public virtual string CancelText
  70                 {
  71                         get
  72                         {
  73                                 object o = ViewState["CancelText"];
  74                                 if(o != null)
  75                                 {
  76                                         return (string)o;
  77                                 }
  78                                 return String.Empty;
  79                         }
  80                         set
  81                         {
  82                                 ViewState["CancelText"] = value;
  83                                 OnColumnChanged();
  84                         }
  85                 }
  86
  87                 public virtual string EditText
  88                 {
  89                         get
  90                         {
  91                                 object o = ViewState["EditText"];
  92                                 if(o != null)
  93                                 {
  94                                         return (string)o;
  95                                 }
  96                                 return String.Empty;
  97                         }
  98                         set
  99                         {
 100                                 ViewState["EditText"] = value;
 101                                 OnColumnChanged();
 102                         }
 103                 }
 104
 105                 public virtual string UpdateText
 106                 {
 107                         get
 108                         {
 109                                 object o = ViewState["UpdateText"];
 110                                 if(o != null)
 111                                 {
 112                                         return (string)o;
 113                                 }
 114                                 return String.Empty;
 115                         }
 116                         set
 117                         {
 118                                 ViewState["UpdateText"] = value;
 119                                 OnColumnChanged();
 120                         }
 121                 }
 122
 123                 public override void InitializeCell(TableCell cell, int columnIndex, ListItemType itemType)
 124                 {
 125                         base.InitializeCell(cell, columnIndex, itemType);
 126
 127                         if (itemType == ListItemType.Header || itemType == ListItemType.Footer)
 128                                 return;
 129
 130                         if (itemType == ListItemType.EditItem) {
 131                                 cell.Controls.Add (MakeButton ("Update", UpdateText));
 132                                 cell.Controls.Add (new LiteralControl ("&nbsp;"));
 133                                 cell.Controls.Add (MakeButton ("Cancel", CancelText));
 134                         } else {
 135                                 cell.Controls.Add (MakeButton ("Edit", EditText));
 136                         }
 137                 }
 138
 139                 Control MakeButton (string commandName, string text)
 140                 {
 141                         if (ButtonType == ButtonColumnType.LinkButton) {
 142                                 DataGridLinkButton ret = new DataGridLinkButton ();
 143                                 ret.CommandName = commandName;
 144                                 ret.Text = text;
 145                                 return ret;
 146                         } else {
 147                                 Button ret = new Button ();
 148                                 ret.CommandName = commandName;
 149                                 ret.Text = text;
 150                                 return ret;
 151                         }
 152                 }
 153         }
 154 }