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

   1 //
   2 // System.Web.UI.WebControls.TableCell.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Gaurav Vaish (2002)
   9 // (C) 2003 Andreas Nahr
  10 //\r
  11 \r
  12 using System;\r
  13 using System.Globalization;\r
  14 using System.Web;\r
  15 using System.Web.UI;\r
  16 using System.ComponentModel;\r
  17 \r
  18 namespace System.Web.UI.WebControls\r
  19 {\r
  20         [DefaultProperty("Text")]\r
  21         [ToolboxItem(false)]\r
  22         [ControlBuilder(typeof(TableCellControlBuilder))]\r
  23         [ParseChildren(false)]\r
  24         [PersistChildren(true)]\r
  25         public class TableCell: WebControl\r
  26         {\r
  27                 public TableCell () : base (HtmlTextWriterTag.Td)\r
  28                 {\r
  29                         PreventAutoID ();\r
  30                 }\r
  31 \r
  32                 internal TableCell (HtmlTextWriterTag tag) : base (tag)\r
  33                 {\r
  34                         PreventAutoID ();\r
  35                 }\r
  36
  37                 [DefaultValue (0), Bindable (true), WebCategory ("Appearance")]
  38                 [WebSysDescription ("The number of columns spanned by this cell.")]\r
  39                 public virtual int ColumnSpan\r
  40                 {\r
  41                         get {\r
  42                                 object o = ViewState ["ColumnSpan"];\r
  43                                 return (o == null) ? 0 : (int) o;\r
  44                         }\r
  45 \r
  46                         set {
  47                                 if (value < 0)
  48                                         throw new ArgumentOutOfRangeException ("value", "ColumnSpan value has to be >= 0.");
  49                                 ViewState ["ColumnSpan"] = value;
  50                         }\r
  51                 }\r
  52
  53                 [DefaultValue (0), Bindable (true), WebCategory ("Layout")]
  54                 [WebSysDescription ("The number of rows spanned by this cell.")]\r
  55                 public virtual int RowSpan\r
  56                 {\r
  57                         get {\r
  58                                 object o = ViewState ["RowSpan"];\r
  59                                 return (o == null) ? 0 : (int) o;\r
  60                         }\r
  61 \r
  62                         set {
  63                                 if (value < 0)
  64                                         throw new ArgumentOutOfRangeException ("value", "RowSpan value has to be >= 0.");
  65                                 ViewState ["RowSpan"] = value;
  66                         }\r
  67                 }\r
  68
  69                 [DefaultValue (""), Bindable (true), WebCategory ("Appearance")]
  70                 [WebSysDescription ("The text that is shown in this cell.")]\r
  71                 public virtual string Text\r
  72                 {\r
  73                         get {\r
  74                                 object o = ViewState ["Text"];\r
  75                                 return (o == null) ? String.Empty : (string) o;\r
  76                         }\r
  77 \r
  78                         set {
  79                                 if (HasControls ())
  80                                         Controls.Clear ();
  81                                 ViewState ["Text"] = value;
  82                         }
  83                 }\r
  84
  85                 [DefaultValue (typeof (HorizontalAlign), "NotSet"), Bindable (true), WebCategory ("Layout")]
  86                 [WebSysDescription ("The horizontal alignment for this cell.")]\r
  87                 public virtual HorizontalAlign HorizontalAlign\r
  88                 {\r
  89                         get {\r
  90                                 if (ControlStyleCreated)\r
  91                                         return ((TableItemStyle) ControlStyle).HorizontalAlign;\r
  92                                 return HorizontalAlign.NotSet;\r
  93                         }\r
  94                         set { ((TableItemStyle) ControlStyle).HorizontalAlign = value; }\r
  95                 }\r
  96
  97                 [DefaultValue (typeof (VerticalAlign), "NotSet"), Bindable (true), WebCategory ("Layout")]
  98                 [WebSysDescription ("The horizontal alignment for this cell.")]\r
  99                 public virtual VerticalAlign VerticalAlign\r
 100                 {\r
 101                         get {\r
 102                                 if (ControlStyleCreated)\r
 103                                         return ((TableItemStyle) ControlStyle).VerticalAlign;\r
 104                                 return VerticalAlign.NotSet;\r
 105                         }\r
 106 \r
 107                         set { ((TableItemStyle) ControlStyle).VerticalAlign = value; }\r
 108                 }\r
 109
 110                 [DefaultValue (true), Bindable (true), WebCategory ("Layout")]
 111                 [WebSysDescription ("Determines if the text in the cell should be wraped at line-end.")]\r
 112                 public virtual bool Wrap\r
 113                 {\r
 114                         get {\r
 115                                 if (ControlStyleCreated)\r
 116                                         return ((TableItemStyle) ControlStyle).Wrap;\r
 117                                 return true;\r
 118                         }\r
 119                         set { ((TableItemStyle) ControlStyle).Wrap = value; }\r
 120                 }\r
 121 \r
 122                 protected override void AddAttributesToRender (HtmlTextWriter writer)\r
 123                 {\r
 124                         base.AddAttributesToRender (writer);\r
 125                         if (ColumnSpan > 0)\r
 126                                 writer.AddAttribute (HtmlTextWriterAttribute.Colspan,\r
 127                                                      ColumnSpan.ToString (NumberFormatInfo.InvariantInfo));\r
 128 \r
 129                         if (RowSpan > 0)\r
 130                                 writer.AddAttribute (HtmlTextWriterAttribute.Rowspan,\r
 131                                                      RowSpan.ToString (NumberFormatInfo.InvariantInfo));\r
 132                 }\r
 133 \r
 134                 protected override void AddParsedSubObject (object obj)\r
 135                 {\r
 136                         if (HasControls ()){\r
 137                                 base.AddParsedSubObject (obj);\r
 138                                 return;\r
 139                         }\r
 140 \r
 141                         if (obj is LiteralControl){\r
 142                                 Text = ((LiteralControl) obj).Text;\r
 143                                 return;\r
 144                         }\r
 145 \r
 146                         string text = Text;\r
 147                         if (text.Length > 0){\r
 148                                 Text = String.Empty;\r
 149                                 base.AddParsedSubObject (new LiteralControl (text));\r
 150                         }\r
 151 \r
 152                         base.AddParsedSubObject (obj);\r
 153                 }\r
 154 \r
 155                 protected override Style CreateControlStyle ()\r
 156                 {\r
 157                         return new TableItemStyle (ViewState);\r
 158                 }\r
 159 \r
 160                 protected override void RenderContents (HtmlTextWriter writer)\r
 161                 {\r
 162                         if (HasControls ())\r
 163                                 base.RenderContents (writer);\r
 164                         else\r
 165                                 writer.Write (Text);\r
 166                 }\r
 167         }\r
 168 }\r
 169 \r