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

   1 //
   2 // System.Web.UI.WebControls.CheckBoxField.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   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
  31 #if NET_2_0
  32 using System.Collections;
  33 using System.Collections.Specialized;
  34 using System.Web.UI;
  35 using System.ComponentModel;
  36 using System.Security.Permissions;
  37
  38 namespace System.Web.UI.WebControls {
  39
  40         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  41         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  42         public class CheckBoxField : BoundField
  43         {
  44                 [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  45                 [BrowsableAttribute (false)]
  46                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
  47                 public override bool ApplyFormatInEditMode {
  48                         get { throw GetNotSupportedPropException ("ApplyFormatInEditMode"); }
  49                         set { throw GetNotSupportedPropException ("ApplyFormatInEditMode"); }
  50                 }
  51
  52             [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  53             [BrowsableAttribute (false)]
  54             [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
  55                 public override bool ConvertEmptyStringToNull {
  56                         get { throw GetNotSupportedPropException ("ConvertEmptyStringToNull"); }
  57                         set { throw GetNotSupportedPropException ("ConvertEmptyStringToNull"); }
  58                 }
  59
  60             [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  61             [BrowsableAttribute (false)]
  62             [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
  63                 public override string DataFormatString {
  64                         get { throw GetNotSupportedPropException ("DataFormatString"); }
  65                         set { throw GetNotSupportedPropException ("DataFormatString"); }
  66                 }
  67
  68             [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  69             [BrowsableAttribute (false)]
  70             [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
  71                 public override bool HtmlEncode {
  72                         get { throw GetNotSupportedPropException ("HtmlEncode"); }
  73                         set { throw GetNotSupportedPropException ("HtmlEncode"); }
  74                 }
  75
  76             [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  77             [BrowsableAttribute (false)]
  78             [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
  79                 public override string NullDisplayText {
  80                         get { throw GetNotSupportedPropException ("NullDisplayText"); }
  81                         set { throw GetNotSupportedPropException ("NullDisplayText"); }
  82                 }
  83
  84                 protected override bool SupportsHtmlEncode {
  85                         get { return false; }
  86                 }
  87
  88                 [LocalizableAttribute (true)]
  89                 [DefaultValueAttribute ("")]
  90                 [WebSysDescription ("")]
  91                 [WebCategoryAttribute ("Appearance")]
  92                 public virtual string Text {
  93                         get { return ViewState.GetString ("Text", ""); }
  94                         set {
  95                                 ViewState ["Text"] = value;
  96                                 OnFieldChanged ();
  97                         }
  98                 }
  99
 100                 protected override void InitializeDataCell (DataControlFieldCell cell, DataControlRowState rowState)
 101                 {
 102                         bool editable = (rowState & (DataControlRowState.Edit | DataControlRowState.Insert)) != 0;
 103                         CheckBox box = new CheckBox ();
 104                         box.Enabled = editable && !ReadOnly;\r
 105                         if (editable)
 106                                 box.ToolTip = HeaderText;
 107                         box.Text = Text;
 108                         cell.Controls.Add (box);
 109                 }
 110
 111                 public override void ExtractValuesFromCell (IOrderedDictionary dictionary,
 112                         DataControlFieldCell cell, DataControlRowState rowState, bool includeReadOnly)
 113                 {
 114                         CheckBox box = (CheckBox) cell.Controls [0];
 115                         dictionary [DataField] = box.Checked;
 116                 }
 117
 118                 protected override void OnDataBindField (object sender, EventArgs e)
 119                 {
 120                         try {
 121                                 DataControlFieldCell cell = (DataControlFieldCell) sender;
 122                                 CheckBox box = (CheckBox) cell.Controls [0];
 123                                 object val = GetValue (cell.BindingContainer);
 124                                 if (val != null) {
 125                                         box.Checked = (bool) val;
 126                                         if (!box.Visible)
 127                                                 box.Visible = true;
 128                                 }
 129                                 else
 130                                         box.Visible = false;
 131                         }
 132                         catch (HttpException) {
 133                                 throw;
 134                         }
 135                         catch (Exception ex) {
 136                                 throw new HttpException (ex.Message, ex);
 137                         }
 138                 }
 139
 140                 protected override object GetDesignTimeValue ()
 141                 {
 142                         return true;
 143                 }
 144
 145                 protected override DataControlField CreateField ()
 146                 {
 147                         return new CheckBoxField ();
 148                 }
 149
 150                 protected override void CopyProperties (DataControlField newField)
 151                 {
 152                         CheckBoxField field = (CheckBoxField) newField;
 153                         field.DataField = DataField;
 154                         field.ReadOnly = ReadOnly;
 155                         field.Text = Text;
 156                 }
 157         }
 158 }
 159 #endif