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

   1 //
   2 // System.Web.UI.WebControls.AutoGeneratedField.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         [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  41         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  42         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  43         public sealed class AutoGeneratedField : BoundField
  44         {
  45                 Type dataType = typeof(string);
  46
  47                 internal AutoGeneratedField ()
  48                 {
  49                 }
  50
  51                 public AutoGeneratedField (string dataField)
  52                 {
  53                         DataField = dataField;
  54                 }
  55
  56                 internal AutoGeneratedField (AutoGeneratedFieldProperties fieldProperties)
  57                 {
  58                         DataField = fieldProperties.DataField;
  59                         DataType = fieldProperties.Type;
  60                         SortExpression = fieldProperties.Name;
  61                         HeaderText = fieldProperties.Name;
  62                         ReadOnly = fieldProperties.IsReadOnly;
  63                 }
  64
  65                 public Type DataType {
  66                         get { return dataType; }
  67                         set { dataType = value; }
  68                 }
  69
  70                 public override bool ConvertEmptyStringToNull {
  71                         get { return true; }
  72                         set { throw new NotSupportedException (); }
  73                 }
  74
  75                 public override string DataFormatString {
  76                         get { return string.Empty; }
  77                         set { throw new NotSupportedException (); }
  78                 }
  79
  80                 public override bool InsertVisible {
  81                         get { return true; }
  82                         set { throw new NotSupportedException (); }
  83                 }
  84
  85                 [MonoTODO ("Support other data types")]
  86                 public override void ExtractValuesFromCell (IOrderedDictionary dictionary,
  87                         DataControlFieldCell cell, DataControlRowState rowState, bool includeReadOnly)
  88                 {
  89                         if (dataType == typeof(bool)) {
  90                                 bool editable = IsEditable (rowState);
  91                                 if (editable || includeReadOnly) {
  92                                         CheckBox box = (CheckBox) cell.Controls [0];
  93                                         dictionary [DataField] = box.Checked;
  94                                 }
  95                         } else
  96                                 base.ExtractValuesFromCell (dictionary, cell, rowState, includeReadOnly);
  97                 }
  98
  99
 100                 [MonoTODO ("Support other data types")]
 101                 protected override void InitializeDataCell (DataControlFieldCell cell, DataControlRowState rowState)
 102                 {
 103                         if (dataType == typeof(bool)) {
 104                                 bool editable = IsEditable (rowState);
 105                                 CheckBox box = new CheckBox ();
 106                                 box.Enabled = editable;
 107                                 box.ToolTip = HeaderText;
 108                                 cell.Controls.Add (box);
 109                         } else
 110                                 base.InitializeDataCell (cell, rowState);
 111                 }
 112
 113                 [MonoTODO ("Support other data types")]
 114                 protected override void OnDataBindField (object sender, EventArgs e)
 115                 {
 116                         DataControlFieldCell cell = (DataControlFieldCell) sender;
 117                         if (dataType == typeof(bool)) {
 118                                 CheckBox box = (CheckBox) cell.Controls [0];
 119                                 object val = GetValue (cell.BindingContainer);
 120                                 if (val != null && val != DBNull.Value)
 121                                         box.Checked = (bool)val;
 122                                 else
 123                                         if (string.IsNullOrEmpty (DataField)) {
 124                                                 box.Visible = false;
 125                                                 return;
 126                                         }
 127
 128                                 if (!box.Visible)
 129                                         box.Visible = true;
 130                         }
 131                         else
 132                                 base.OnDataBindField (sender, e);
 133                 }
 134
 135                 public override void ValidateSupportsCallback ()
 136                 {
 137                 }
 138
 139                 protected override DataControlField CreateField ()
 140                 {
 141                         return new AutoGeneratedField ();
 142                 }
 143
 144                 protected override void CopyProperties (DataControlField newField)
 145                 {
 146                         base.CopyProperties (newField);
 147                         AutoGeneratedField field = (AutoGeneratedField) newField;
 148                         field.DataType = DataType;
 149                 }
 150
 151                 protected override object GetDesignTimeValue()
 152                 {
 153                         return base.GetDesignTimeValue ();
 154                 }
 155         }
 156 }
 157 #endif