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

   1 //
   2 // System.Web.UI.WebControls.TableCell.cs
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.ComponentModel;
  30 using System.Globalization;
  31 using System.Security.Permissions;
  32 using System.Text;
  33
  34 namespace System.Web.UI.WebControls {
  35
  36         // CAS
  37         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  38         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         // attributes
  40         [ControlBuilder (typeof (TableCellControlBuilder))]
  41         [DefaultProperty ("Text")]
  42         [ParseChildren (false)]
  43         [ToolboxItem ("")]
  44 #if NET_2_0
  45         [Bindable (false)]
  46         [Designer ("System.Web.UI.Design.WebControls.PreviewControlDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  47 #else
  48         [PersistChildren (true)]
  49 #endif
  50         public class TableCell : WebControl {
  51
  52                 public TableCell ()
  53                         : base (HtmlTextWriterTag.Td)
  54                 {
  55                 }
  56
  57                 // FIXME: is there a clean way to change the tag's name without using a ctor ?
  58                 // if not then this truly limits the usefulness of inheritance
  59                 internal TableCell (HtmlTextWriterTag tag)
  60                         : base (tag)
  61                 {
  62                 }
  63
  64
  65 #if NET_2_0
  66                 [DefaultValue (null)]
  67                 [TypeConverter (typeof (StringArrayConverter))]
  68                 public virtual string[] AssociatedHeaderCellID {
  69                         get {
  70                                 object o = ViewState ["AssociatedHeaderCellID"];
  71                                 return (o == null) ? new string[0] : (string[]) o;
  72                         }
  73                         set {
  74                                 if (value == null)
  75                                         ViewState.Remove ("AssociatedHeaderCellID");
  76                                 else
  77                                         ViewState ["AssociatedHeaderCellID"] = value;
  78                         }
  79                 }
  80 #endif
  81
  82 #if ONLY_1_1
  83                 [Bindable (true)]
  84 #endif
  85                 [DefaultValue (0)]
  86                 [WebSysDescription ("")]
  87                 [WebCategory ("Appearance")]
  88                 public virtual int ColumnSpan {
  89                         get {
  90                                 object o = ViewState ["ColumnSpan"];
  91                                 return (o == null) ? 0 : (int) o;
  92                         }
  93                         set {
  94                                 // LAMESPEC: undocumented (but like Table.CellPadding)
  95                                 if (value < 0)
  96                                         throw new ArgumentOutOfRangeException ("< 0");
  97                                 ViewState ["ColumnSpan"] = value;
  98                         }
  99                 }
 100
 101 #if ONLY_1_1
 102                 [Bindable (true)]
 103 #endif
 104                 [DefaultValue (HorizontalAlign.NotSet)]
 105                 [WebSysDescription ("")]
 106                 [WebCategory ("Layout")]
 107                 public virtual HorizontalAlign HorizontalAlign {
 108                         get {
 109                                 if (!ControlStyleCreated)
 110                                         return HorizontalAlign.NotSet; // default value
 111                                 return TableItemStyle.HorizontalAlign;
 112                         }
 113                         set { TableItemStyle.HorizontalAlign = value; }
 114                 }
 115
 116 #if ONLY_1_1
 117                 [Bindable (true)]
 118 #endif
 119                 [DefaultValue (0)]
 120                 [WebSysDescription ("")]
 121                 [WebCategory ("Layout")]
 122                 public virtual int RowSpan {
 123                         get {
 124                                 object o = ViewState ["RowSpan"];
 125                                 return (o == null) ? 0 : (int) o;
 126                         }
 127                         set {
 128                                 // LAMESPEC: undocumented (but like Table.CellPadding)
 129                                 if (value < 0)
 130                                         throw new ArgumentOutOfRangeException ("< 0");
 131                                 ViewState ["RowSpan"] = value;
 132                         }
 133                 }
 134
 135 #if NET_2_0
 136                 [Localizable (true)]
 137                 [PersistenceMode (PersistenceMode.EncodedInnerDefaultProperty)]
 138 #else
 139                 [Bindable (true)]
 140 #endif
 141                 [DefaultValue ("")]
 142                 [WebSysDescription ("")]
 143                 [WebCategory ("Appearance")]
 144                 public virtual string Text {
 145                         get {
 146                                 object o = ViewState ["Text"];
 147                                 return (o == null) ? String.Empty : (string) o;
 148                         }
 149                         set {
 150                                 if (value == null)
 151                                         ViewState.Remove ("Text");
 152                                 else {
 153                                         ViewState ["Text"] = value;
 154                                         if (HasControls ())
 155                                                 Controls.Clear ();
 156                                 }
 157                         }
 158                 }
 159
 160 #if ONLY_1_1
 161                 [Bindable (true)]
 162 #endif
 163                 [DefaultValue (VerticalAlign.NotSet)]
 164                 [WebSysDescription ("")]
 165                 [WebCategory ("Layout")]
 166                 public virtual VerticalAlign VerticalAlign {
 167                         get {
 168                                 if (!ControlStyleCreated)
 169                                         return VerticalAlign.NotSet; // default value
 170                                 return TableItemStyle.VerticalAlign;
 171                         }
 172                         set { TableItemStyle.VerticalAlign = value; }
 173                 }
 174
 175 #if ONLY_1_1
 176                 [Bindable (true)]
 177 #endif
 178                 [DefaultValue (true)]
 179                 [WebSysDescription ("")]
 180                 [WebCategory ("Layout")]
 181                 public virtual bool Wrap {
 182                         get {
 183                                 if (!ControlStyleCreated)
 184                                         return true; // default value
 185                                 return TableItemStyle.Wrap;
 186                         }
 187                         set { TableItemStyle.Wrap = value; }
 188                 }
 189
 190                 private TableItemStyle TableItemStyle {
 191                         get { return (ControlStyle as TableItemStyle); }
 192                 }
 193
 194
 195                 protected override void AddAttributesToRender (HtmlTextWriter writer)
 196                 {
 197                         base.AddAttributesToRender (writer);
 198                         if (writer == null)
 199                                 return;
 200
 201                         int i = ColumnSpan;
 202                         if (i > 0)
 203                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan, i.ToString (CultureInfo.InvariantCulture));
 204
 205                         i = RowSpan;
 206                         if (i > 0)
 207                                 writer.AddAttribute (HtmlTextWriterAttribute.Rowspan, i.ToString (CultureInfo.InvariantCulture));
 208 #if NET_2_0
 209                         string[] ahci = AssociatedHeaderCellID;
 210                         if (ahci.Length > 1) {
 211                                 StringBuilder sb = new StringBuilder ();
 212                                 for (i = 0; i < ahci.Length - 1; i++) {
 213                                         sb.Append (ahci [i]);
 214                                         sb.Append (",");
 215                                 }
 216                                 sb.Append (ahci.Length - 1);
 217                                 writer.AddAttribute (HtmlTextWriterAttribute.Headers, sb.ToString ());
 218                         } else if (ahci.Length == 1) {
 219                                 // most common case (without a StringBuilder)
 220                                 writer.AddAttribute (HtmlTextWriterAttribute.Headers, ahci [0]);
 221                         }
 222 #endif
 223                 }
 224
 225                 protected override void AddParsedSubObject (object obj)
 226                 {
 227                         if (HasControls ()) {
 228                                 base.AddParsedSubObject (obj);
 229                                 return;
 230                         }
 231
 232                         LiteralControl lc = (obj as LiteralControl);
 233                         if (lc == null) {
 234                                 string s = Text;
 235                                 if (s.Length > 0) {
 236                                         Controls.Add (new LiteralControl (s));
 237                                         // remove from viewstate
 238                                         Text = null;
 239                                 }
 240                                 base.AddParsedSubObject(obj);
 241                         } else {
 242                                 // this will clear any existing controls
 243                                 Text = lc.Text;
 244                         }
 245                 }
 246
 247                 protected override Style CreateControlStyle ()
 248                 {
 249                         return new TableItemStyle (ViewState);
 250                 }
 251
 252 #if NET_2_0
 253                 protected internal
 254 #else
 255                 protected
 256 #endif
 257                 override void RenderContents (HtmlTextWriter writer)
 258                 {
 259                         object o = ViewState ["Text"];
 260                         if (o != null) {
 261                                 writer.Write (o as string);
 262                         }
 263                         base.RenderContents (writer);
 264                 }
 265         }
 266 }