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

   1 //
   2 // System.Web.UI.WebControls.ButtonField.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.Reflection;
  33 using System.Collections;
  34 using System.Collections.Specialized;
  35 using System.Web.UI;
  36 using System.ComponentModel;
  37 using System.Security.Permissions;
  38
  39 namespace System.Web.UI.WebControls {
  40
  41         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  42         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  43         public class ButtonField : ButtonFieldBase
  44         {
  45                 PropertyDescriptor boundProperty;
  46
  47                 [DefaultValueAttribute ("")]
  48                 [WebSysDescription ("Raised when a Button Command is executed.")]
  49                 [WebCategoryAttribute ("Behavior")]
  50                 public virtual string CommandName {
  51                         get {
  52                                 object ob = ViewState ["CommandName"];
  53                                 if (ob != null) return (string) ob;
  54                                 return "";
  55                         }
  56                         set {
  57                                 ViewState ["CommandName"] = value;
  58                                 OnFieldChanged ();
  59                         }
  60                 }
  61
  62                 [DefaultValueAttribute ("")]
  63                 [TypeConverterAttribute ("System.Web.UI.Design.DataSourceViewSchemaConverter, " + Consts.AssemblySystem_Design)]
  64                 [WebSysDescription ("")]
  65                 [WebCategoryAttribute ("Data")]
  66                 public virtual string DataTextField {
  67                         get {
  68                                 object ob = ViewState ["DataTextField"];
  69                                 if (ob != null) return (string) ob;
  70                                 return "";
  71                         }
  72                         set {
  73                                 ViewState ["DataTextField"] = value;
  74                                 OnFieldChanged ();
  75                         }
  76                 }
  77
  78                 [DefaultValueAttribute ("")]\r
  79                 [WebSysDescription ("")]
  80                 [WebCategoryAttribute ("Data")]
  81                 public virtual string DataTextFormatString {
  82                         get {
  83                                 object ob = ViewState ["DataTextFormatString"];
  84                                 if (ob != null) return (string) ob;
  85                                 return "";
  86                         }
  87                         set {
  88                                 ViewState ["DataTextFormatString"] = value;
  89                                 OnFieldChanged ();
  90                         }
  91                 }
  92
  93                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
  94                 [WebSysDescription ("")]
  95                 [WebCategoryAttribute ("Appearance")]
  96                 [DefaultValueAttribute ("")]\r
  97                 [UrlPropertyAttribute]\r
  98                 public virtual string ImageUrl {
  99                         get {
 100                                 object ob = ViewState ["ImageUrl"];
 101                                 if (ob != null) return (string) ob;
 102                                 return "";
 103                         }
 104                         set {
 105                                 ViewState ["ImageUrl"] = value;
 106                                 OnFieldChanged ();
 107                         }
 108                 }
 109
 110                 [LocalizableAttribute (true)]
 111                 [DefaultValueAttribute ("")]
 112                 [WebSysDescription ("")]
 113                 [WebCategoryAttribute ("Appearance")]
 114                 public virtual string Text {
 115                         get {
 116                                 object ob = ViewState ["Text"];
 117                                 if (ob != null) return (string) ob;
 118                                 return "";
 119                         }
 120                         set {
 121                                 ViewState ["Text"] = value;
 122                                 OnFieldChanged ();
 123                         }
 124                 }
 125
 126                 public override bool Initialize (bool sortingEnabled, Control control)
 127                 {
 128                         return base.Initialize (sortingEnabled, control);
 129                 }
 130
 131                 protected virtual string FormatDataTextValue (object value)
 132                 {
 133                         if (DataTextFormatString.Length > 0)
 134                                 return string.Format (DataTextFormatString, value);
 135                         else if (value == null)
 136                                 return string.Empty;
 137                         else
 138                                 return value.ToString ();
 139                 }
 140
 141                 public override void InitializeCell (DataControlFieldCell cell, DataControlCellType cellType, DataControlRowState rowState, int rowIndex)
 142                 {
 143                         string index = rowIndex.ToString ();
 144
 145                         if (cellType == DataControlCellType.DataCell) {
 146                                 DataControlButton btn = new DataControlButton (Control);
 147                                 btn.CommandName = CommandName;
 148                                 btn.CommandArgument = index;
 149
 150                                 if (DataTextField != "") {
 151                                         if ((rowState & DataControlRowState.Insert) == 0)
 152                                                 cell.DataBinding += new EventHandler (OnDataBindField);
 153                                 }
 154                                 else {
 155                                         btn.Text = Text;
 156                                         btn.ButtonType = ButtonType;
 157                                         if (ButtonType == ButtonType.Image) btn.ImageUrl = ImageUrl;
 158                                 }
 159                                 cell.Controls.Add (btn);
 160                         }
 161                         else
 162                                 base.InitializeCell (cell, cellType, rowState, rowIndex);
 163                 }
 164
 165                 void OnDataBindField (object sender, EventArgs e)
 166                 {
 167                         DataControlFieldCell cell = (DataControlFieldCell) sender;
 168                         DataControlButton btn = (DataControlButton) cell.Controls [0];
 169                         btn.Text = FormatDataTextValue (GetBoundValue (cell.BindingContainer));
 170                         if (ButtonType == ButtonType.Image) btn.ImageUrl = ImageUrl;
 171                         btn.ButtonType = ButtonType;
 172                 }
 173
 174                 object GetBoundValue (Control controlContainer)
 175                 {
 176                         IDataItemContainer dic = controlContainer as IDataItemContainer;
 177                         if (boundProperty == null) {
 178                                 boundProperty = TypeDescriptor.GetProperties (dic.DataItem) [DataTextField];
 179                                 if (boundProperty == null)
 180                                         new InvalidOperationException ("Property '" + DataTextField + "' not found in object of type " + dic.DataItem.GetType());
 181                         }
 182                         return boundProperty.GetValue (dic.DataItem);
 183                 }
 184
 185                 protected override DataControlField CreateField ()
 186                 {
 187                         return new ButtonField ();
 188                 }
 189
 190                 protected override void CopyProperties (DataControlField newField)
 191                 {
 192                         base.CopyProperties (newField);
 193                         ButtonField field = (ButtonField) newField;
 194                         field.CommandName = CommandName;
 195                         field.DataTextField = DataTextField;
 196                         field.DataTextFormatString = DataTextFormatString;
 197                         field.ImageUrl = ImageUrl;
 198                         field.Text = Text;
 199                 }
 200
 201                 [MonoTODO]
 202                 public override void ValidateSupportsCallback ()
 203                 {
 204                         throw new NotImplementedException ();
 205                 }
 206         }
 207 }
 208 #endif