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 using System.Web.Util;
  34
  35 namespace System.Web.UI.WebControls {
  36
  37         // CAS
  38         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         // attributes
  41         [ControlBuilder (typeof (TableCellControlBuilder))]
  42         [DefaultProperty ("Text")]
  43         [ParseChildren (false)]
  44         [ToolboxItem ("")]
  45         [Bindable (false)]
  46         [Designer ("System.Web.UI.Design.WebControls.PreviewControlDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  47         public class TableCell : WebControl {
  48
  49                 public TableCell ()
  50                         : base (HtmlTextWriterTag.Td)
  51                 {
  52                         AutoID = false;
  53                 }
  54
  55                 // FIXME: is there a clean way to change the tag's name without using a ctor ?
  56                 // if not then this truly limits the usefulness of inheritance
  57                 internal TableCell (HtmlTextWriterTag tag)
  58                         : base (tag)
  59                 {
  60                         AutoID = false;
  61                 }
  62
  63
  64                 [DefaultValue (null)]
  65                 [TypeConverter (typeof (StringArrayConverter))]
  66                 public virtual string[] AssociatedHeaderCellID {
  67                         get {
  68                                 object o = ViewState ["AssociatedHeaderCellID"];
  69                                 return (o == null) ? new string[0] : (string[]) o;
  70                         }
  71                         set {
  72                                 if (value == null)
  73                                         ViewState.Remove ("AssociatedHeaderCellID");
  74                                 else
  75                                         ViewState ["AssociatedHeaderCellID"] = value;
  76                         }
  77                 }
  78
  79 #if ONLY_1_1
  80                 [Bindable (true)]
  81 #endif
  82                 [DefaultValue (0)]
  83                 [WebSysDescription ("")]
  84                 [WebCategory ("Appearance")]
  85                 public virtual int ColumnSpan {
  86                         get {
  87                                 object o = ViewState ["ColumnSpan"];
  88                                 return (o == null) ? 0 : (int) o;
  89                         }
  90                         set {
  91                                 // LAMESPEC: undocumented (but like Table.CellPadding)
  92                                 if (value < 0)
  93                                         throw new ArgumentOutOfRangeException ("< 0");
  94                                 ViewState ["ColumnSpan"] = value;
  95                         }
  96                 }
  97
  98 #if ONLY_1_1
  99                 [Bindable (true)]
 100 #endif
 101                 [DefaultValue (HorizontalAlign.NotSet)]
 102                 [WebSysDescription ("")]
 103                 [WebCategory ("Layout")]
 104                 public virtual HorizontalAlign HorizontalAlign {
 105                         get {
 106                                 if (!ControlStyleCreated)
 107                                         return HorizontalAlign.NotSet; // default value
 108                                 return TableItemStyle.HorizontalAlign;
 109                         }
 110                         set { TableItemStyle.HorizontalAlign = value; }
 111                 }
 112
 113 #if ONLY_1_1
 114                 [Bindable (true)]
 115 #endif
 116                 [DefaultValue (0)]
 117                 [WebSysDescription ("")]
 118                 [WebCategory ("Layout")]
 119                 public virtual int RowSpan {
 120                         get {
 121                                 object o = ViewState ["RowSpan"];
 122                                 return (o == null) ? 0 : (int) o;
 123                         }
 124                         set {
 125                                 // LAMESPEC: undocumented (but like Table.CellPadding)
 126                                 if (value < 0)
 127                                         throw new ArgumentOutOfRangeException ("< 0");
 128                                 ViewState ["RowSpan"] = value;
 129                         }
 130                 }
 131
 132                 [Localizable (true)]
 133                 [PersistenceMode (PersistenceMode.InnerDefaultProperty)]
 134                 [DefaultValue ("")]
 135                 [WebSysDescription ("")]
 136                 [WebCategory ("Appearance")]
 137                 public virtual string Text {
 138                         get {
 139                                 object o = ViewState ["Text"];
 140                                 return (o == null) ? String.Empty : (string) o;
 141                         }
 142                         set {
 143                                 if (value == null)
 144                                         ViewState.Remove ("Text");
 145                                 else {
 146                                         ViewState ["Text"] = value;
 147                                         if (HasControls ())
 148                                                 Controls.Clear ();
 149                                 }
 150                         }
 151                 }
 152
 153 #if ONLY_1_1
 154                 [Bindable (true)]
 155 #endif
 156                 [DefaultValue (VerticalAlign.NotSet)]
 157                 [WebSysDescription ("")]
 158                 [WebCategory ("Layout")]
 159                 public virtual VerticalAlign VerticalAlign {
 160                         get {
 161                                 if (!ControlStyleCreated)
 162                                         return VerticalAlign.NotSet; // default value
 163                                 return TableItemStyle.VerticalAlign;
 164                         }
 165                         set { TableItemStyle.VerticalAlign = value; }
 166                 }
 167
 168 #if ONLY_1_1
 169                 [Bindable (true)]
 170 #endif
 171                 [DefaultValue (true)]
 172                 [WebSysDescription ("")]
 173                 [WebCategory ("Layout")]
 174                 public virtual bool Wrap {
 175                         get {
 176                                 if (!ControlStyleCreated)
 177                                         return true; // default value
 178                                 return TableItemStyle.Wrap;
 179                         }
 180                         set { TableItemStyle.Wrap = value; }
 181                 }
 182                 public override bool SupportsDisabledAttribute {
 183                         get { return RenderingCompatibilityLessThan40; }
 184                 }
 185                 TableItemStyle TableItemStyle {
 186                         get { return (ControlStyle as TableItemStyle); }
 187                 }
 188
 189                 protected override void AddAttributesToRender (HtmlTextWriter writer)
 190                 {
 191                         base.AddAttributesToRender (writer);
 192                         if (writer == null)
 193                                 return;
 194
 195                         int i = ColumnSpan;
 196                         if (i > 0)
 197                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan, i.ToString (Helpers.InvariantCulture), false);
 198
 199                         i = RowSpan;
 200                         if (i > 0)
 201                                 writer.AddAttribute (HtmlTextWriterAttribute.Rowspan, i.ToString (Helpers.InvariantCulture), false);
 202                         string[] ahci = AssociatedHeaderCellID;
 203                         if (ahci.Length > 1) {
 204                                 StringBuilder sb = new StringBuilder ();
 205                                 for (i = 0; i < ahci.Length - 1; i++) {
 206                                         sb.Append (ahci [i]);
 207                                         sb.Append (",");
 208                                 }
 209                                 sb.Append (ahci.Length - 1);
 210                                 writer.AddAttribute (HtmlTextWriterAttribute.Headers, sb.ToString ());
 211                         } else if (ahci.Length == 1) {
 212                                 // most common case (without a StringBuilder)
 213                                 writer.AddAttribute (HtmlTextWriterAttribute.Headers, ahci [0]);
 214                         }
 215                 }
 216
 217                 protected override void AddParsedSubObject (object obj)
 218                 {
 219                         if (HasControls ()) {
 220                                 base.AddParsedSubObject (obj);
 221                                 return;
 222                         }
 223
 224                         LiteralControl lc = (obj as LiteralControl);
 225                         if (lc == null) {
 226                                 string s = Text;
 227                                 if (s.Length > 0) {
 228                                         Controls.Add (new LiteralControl (s));
 229                                         // remove from viewstate
 230                                         Text = null;
 231                                 }
 232                                 base.AddParsedSubObject(obj);
 233                         } else {
 234                                 // this will clear any existing controls
 235                                 Text = lc.Text;
 236                         }
 237                 }
 238
 239                 protected override Style CreateControlStyle ()
 240                 {
 241                         return new TableItemStyle (ViewState);
 242                 }
 243
 244                 protected internal
 245                 override void RenderContents (HtmlTextWriter writer)
 246                 {
 247                         if (HasControls () || HasRenderMethodDelegate ())
 248                                 base.RenderContents (writer);
 249                         else
 250                                 writer.Write (Text);
 251                 }
 252         }
 253 }
 254