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) 2005-2010 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 using System.Collections;
  32 using System.Collections.Specialized;
  33 using System.Web.UI;
  34 using System.ComponentModel;
  35 using System.Security.Permissions;
  36
  37 namespace System.Web.UI.WebControls
  38 {
  39         [EditorBrowsableAttribute (EditorBrowsableState.Never)]
  40         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  41         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  42         public sealed class AutoGeneratedField : BoundField
  43         {
  44                 Type dataType = typeof(string);
  45
  46                 internal AutoGeneratedField ()
  47                 {
  48                 }
  49
  50                 public AutoGeneratedField (string dataField)
  51                 {
  52                         DataField = dataField;
  53                 }
  54
  55                 internal AutoGeneratedField (AutoGeneratedFieldProperties fieldProperties)
  56                 {
  57                         DataField = fieldProperties.DataField;
  58                         DataType = fieldProperties.Type;
  59                         SortExpression = fieldProperties.Name;
  60                         HeaderText = fieldProperties.Name;
  61                         ReadOnly = fieldProperties.IsReadOnly;
  62                 }
  63
  64                 public Type DataType {
  65                         get { return dataType; }
  66                         set { dataType = value; }
  67                 }
  68
  69                 public override bool ConvertEmptyStringToNull {
  70                         get { return true; }
  71                         set { throw new NotSupportedException (); }
  72                 }
  73
  74                 public override string DataFormatString {
  75                         get { return string.Empty; }
  76                         set { throw new NotSupportedException (); }
  77                 }
  78
  79                 public override bool InsertVisible {
  80                         get { return true; }
  81                         set { throw new NotSupportedException (); }
  82                 }
  83
  84                 [MonoTODO ("Support other data types")]
  85                 public override void ExtractValuesFromCell (IOrderedDictionary dictionary,
  86                         DataControlFieldCell cell, DataControlRowState rowState, bool includeReadOnly)
  87                 {
  88                         if (dataType == typeof(bool)) {
  89                                 bool editable = IsEditable (rowState);
  90                                 if (editable || includeReadOnly) {
  91                                         CheckBox box = (CheckBox) cell.Controls [0];
  92                                         dictionary [DataField] = box.Checked;
  93                                 }
  94                         } else
  95                                 base.ExtractValuesFromCell (dictionary, cell, rowState, includeReadOnly);
  96                 }
  97
  98
  99                 [MonoTODO ("Support other data types")]
 100                 protected override void InitializeDataCell (DataControlFieldCell cell, DataControlRowState rowState)
 101                 {
 102                         if (dataType == typeof(bool)) {
 103                                 bool editable = IsEditable (rowState);
 104                                 CheckBox box = new CheckBox ();
 105                                 box.Enabled = editable;
 106                                 box.ToolTip = HeaderText;
 107                                 cell.Controls.Add (box);
 108                         } else
 109                                 base.InitializeDataCell (cell, rowState);
 110                 }
 111
 112                 [MonoTODO ("Support other data types")]
 113                 protected override void OnDataBindField (object sender, EventArgs e)
 114                 {
 115                         DataControlFieldCell cell = (DataControlFieldCell) sender;
 116                         if (dataType == typeof(bool)) {
 117                                 CheckBox box = (CheckBox) cell.Controls [0];
 118                                 object val = GetValue (cell.BindingContainer);
 119                                 if (val != null && val != DBNull.Value)
 120                                         box.Checked = (bool)val;
 121                                 else
 122                                         if (string.IsNullOrEmpty (DataField)) {
 123                                                 box.Visible = false;
 124                                                 return;
 125                                         }
 126
 127                                 if (!box.Visible)
 128                                         box.Visible = true;
 129                         }
 130                         else
 131                                 base.OnDataBindField (sender, e);
 132                 }
 133
 134                 public override void ValidateSupportsCallback ()
 135                 {
 136                 }
 137
 138                 protected override DataControlField CreateField ()
 139                 {
 140                         return new AutoGeneratedField ();
 141                 }
 142
 143                 protected override void CopyProperties (DataControlField newField)
 144                 {
 145                         base.CopyProperties (newField);
 146                         AutoGeneratedField field = (AutoGeneratedField) newField;
 147                         field.DataType = DataType;
 148                 }
 149
 150                 protected override object GetDesignTimeValue()
 151                 {
 152                         return base.GetDesignTimeValue ();
 153                 }
 154         }
 155 }
 156