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

   1 //
   2 // System.Web.UI.WebControls.Panel.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 //
  11 \r
  12 using System;\r
  13 using System.ComponentModel;
  14 using System.ComponentModel.Design;\r
  15 using System.Web;\r
  16 using System.Web.UI;\r
  17 \r
  18 namespace System.Web.UI.WebControls\r
  19 {\r
  20         [Designer ("System.Web.UI.Design.WebControls.PanelDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]\r
  21         [ParseChildren(false)]\r
  22         [PersistChildren(true)]\r
  23         [ToolboxData("<{0}:Panel runat=\"server\">Panel</{0}:Panel>")]\r
  24         public class Panel: WebControl\r
  25         {\r
  26                 public Panel(): base(HtmlTextWriterTag.Div)\r
  27                 {\r
  28                 }\r
  29
  30                 [DefaultValue (""), Bindable (true), WebCategory ("Appearance")]
  31                 [Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
  32                 [WebSysDescription ("An Url specifying the background image for the panel.")]\r
  33                 public virtual string BackImageUrl\r
  34                 {\r
  35                         get\r
  36                         {\r
  37                                 object o = ViewState["BackImageUrl"];\r
  38                                 if(o != null)\r
  39                                         return (string)o;\r
  40                                 return String.Empty;\r
  41                         }\r
  42                         set\r
  43                         {\r
  44                                 ViewState["BackImageUrl"] = value;\r
  45                         }\r
  46                 }\r
  47
  48                 [DefaultValue (typeof (HorizontalAlign), "NotSet"), Bindable (true), WebCategory ("Layout")]
  49                 [WebSysDescription ("The horizonal alignment of the panel.")]\r
  50                 public virtual HorizontalAlign HorizontalAlign\r
  51                 {\r
  52                         get\r
  53                         {\r
  54                                 object o = ViewState["HorizontalAlign"];\r
  55                                 if(o != null)\r
  56                                         return (HorizontalAlign)o;\r
  57                                 return HorizontalAlign.NotSet;\r
  58                         }\r
  59                         set\r
  60                         {\r
  61                                 if(!Enum.IsDefined(typeof(HorizontalAlign), value))\r
  62                                 {\r
  63                                         throw new ArgumentOutOfRangeException ("value", "Only valid enumeration members are allowed");\r
  64                                 }\r
  65                                 ViewState["HorizontalAlign"] = value;\r
  66                         }\r
  67                 }\r
  68
  69                 [DefaultValue (true), Bindable (true), WebCategory ("Layout")]
  70                 [WebSysDescription ("Determines if the content wraps at line-end.")]\r
  71                 public virtual bool Wrap\r
  72                 {\r
  73                         get\r
  74                         {\r
  75                                 object o = ViewState["Wrap"];\r
  76                                 if(o != null)\r
  77                                         return (bool)o;\r
  78                                 return true;\r
  79                         }\r
  80                         set\r
  81                         {\r
  82                                 ViewState["Wrap"] = value;\r
  83                         }\r
  84                 }\r
  85 \r
  86                 protected override void AddAttributesToRender(HtmlTextWriter writer)\r
  87                 {\r
  88                         base.AddAttributesToRender(writer);\r
  89                         if(BackImageUrl.Length > 0)\r
  90                         {\r
  91                                 writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundImage, "url(" + ResolveUrl(BackImageUrl) + ")");\r
  92                         }\r
  93                         if(HorizontalAlign != HorizontalAlign.NotSet)\r
  94                         {\r
  95                                 writer.AddAttribute(HtmlTextWriterAttribute.Align, TypeDescriptor.GetConverter(typeof(HorizontalAlign)).ConvertToString(HorizontalAlign));\r
  96                         }\r
  97                         if(!Wrap)\r
  98                         {\r
  99                                 writer.AddAttribute(HtmlTextWriterAttribute.Nowrap, "nowrap");\r
 100                         }\r
 101                 }\r
 102         }\r
 103 }\r