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

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     Label\r
   4  *\r
   5  * Author:  Gaurav Vaish\r
   6  * Maintainer: gvaish@iitk.ac.in\r
   7  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
   8  * Implementation: yes\r
   9  * Status:  100%\r
  10  *\r
  11  * (C) Gaurav Vaish (2001)\r
  12  */\r
  13 \r
  14 using System;\r
  15 using System.ComponentModel;\r
  16 using System.Web;\r
  17 using System.Web.UI;\r
  18 \r
  19 namespace System.Web.UI.WebControls\r
  20 {\r
  21         [DefaultProperty("Text")]\r
  22         //[Designer("??")]\r
  23         [ControlBuilder(typeof(LabelControlBuilder))]\r
  24         //[DataBindingHandler("??")]\r
  25         [ParseChildren(false)]\r
  26         [ToolboxData("<{0}:Label runat=\"server\">Label</{0}:Label>")]\r
  27         public class Label : WebControl\r
  28         {\r
  29                 public Label(): base()\r
  30                 {\r
  31                 }\r
  32 \r
  33                 internal Label(HtmlTextWriterTag tagKey): base(tagKey)\r
  34                 {\r
  35                 }\r
  36 \r
  37                 public virtual string Text\r
  38                 {\r
  39                         get\r
  40                         {\r
  41                                 object o = ViewState["Text"];\r
  42                                 if(o!=null)\r
  43                                         return (string)o;\r
  44                                 return String.Empty;\r
  45                         }\r
  46                         set\r
  47                         {\r
  48                                 ViewState["Text"] = value;\r
  49                         }\r
  50                 }\r
  51 \r
  52                 protected override void AddParsedSubObject(object obj)\r
  53                 {\r
  54                         if(HasControls())\r
  55                         {\r
  56                                 AddParsedSubObject(obj);\r
  57                                 return;\r
  58                         }\r
  59                         if(obj is LiteralControl)\r
  60                         {\r
  61                                 Text = ((LiteralControl)obj).Text;\r
  62                                 return;\r
  63                         }\r
  64                         if(Text.Length > 0)\r
  65                         {\r
  66                                 AddParsedSubObject(Text);\r
  67                                 Text = String.Empty;\r
  68                         }\r
  69                         AddParsedSubObject(obj);\r
  70                 }\r
  71 \r
  72                 protected override void LoadViewState(object savedState)\r
  73                 {\r
  74                         if(savedState != null)\r
  75                         {\r
  76                                 base.LoadViewState(savedState);\r
  77                                 string savedText = (string)ViewState["Text"];\r
  78                                 if(savedText != null)\r
  79                                         Text = savedText;\r
  80                         }\r
  81                 }\r
  82 \r
  83                 protected override void RenderContents(HtmlTextWriter writer)\r
  84                 {\r
  85                         if(HasControls())\r
  86                         {\r
  87                                 RenderContents(writer);\r
  88                         } else\r
  89                         {\r
  90                                 writer.Write(Text);\r
  91                         }\r
  92                 }\r
  93         }\r
  94 }\r