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
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.ComponentModel;
  35 using System.ComponentModel.Design;
  36 using System.Web;
  37 using System.Web.UI;
  38
  39 namespace System.Web.UI.WebControls
  40 {
  41         [Designer ("System.Web.UI.Design.WebControls.PanelDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]
  42         [ParseChildren(false)]
  43         [PersistChildren(true)]
  44         [ToolboxData("<{0}:Panel runat=\"server\">Panel</{0}:Panel>")]
  45         public class Panel: WebControl
  46         {
  47                 public Panel(): base(HtmlTextWriterTag.Div)
  48                 {
  49                 }
  50
  51                 [DefaultValue (""), Bindable (true), WebCategory ("Appearance")]
  52                 [Editor ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
  53                 [WebSysDescription ("An Url specifying the background image for the panel.")]
  54                 public virtual string BackImageUrl
  55                 {
  56                         get
  57                         {
  58                                 object o = ViewState["BackImageUrl"];
  59                                 if(o != null)
  60                                         return (string)o;
  61                                 return String.Empty;
  62                         }
  63                         set
  64                         {
  65                                 ViewState["BackImageUrl"] = value;
  66                         }
  67                 }
  68
  69                 [DefaultValue (typeof (HorizontalAlign), "NotSet"), Bindable (true), WebCategory ("Layout")]
  70                 [WebSysDescription ("The horizonal alignment of the panel.")]
  71                 public virtual HorizontalAlign HorizontalAlign
  72                 {
  73                         get
  74                         {
  75                                 object o = ViewState["HorizontalAlign"];
  76                                 if(o != null)
  77                                         return (HorizontalAlign)o;
  78                                 return HorizontalAlign.NotSet;
  79                         }
  80                         set
  81                         {
  82                                 if(!Enum.IsDefined(typeof(HorizontalAlign), value))
  83                                 {
  84                                         throw new ArgumentOutOfRangeException ("value", "Only valid enumeration members are allowed");
  85                                 }
  86                                 ViewState["HorizontalAlign"] = value;
  87                         }
  88                 }
  89
  90                 [DefaultValue (true), Bindable (true), WebCategory ("Layout")]
  91                 [WebSysDescription ("Determines if the content wraps at line-end.")]
  92                 public virtual bool Wrap
  93                 {
  94                         get
  95                         {
  96                                 object o = ViewState["Wrap"];
  97                                 if(o != null)
  98                                         return (bool)o;
  99                                 return true;
 100                         }
 101                         set
 102                         {
 103                                 ViewState["Wrap"] = value;
 104                         }
 105                 }
 106
 107                 protected override void AddAttributesToRender(HtmlTextWriter writer)
 108                 {
 109                         base.AddAttributesToRender(writer);
 110                         if(BackImageUrl.Length > 0)
 111                         {
 112                                 writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundImage, "url(" + ResolveUrl(BackImageUrl) + ")");
 113                         }
 114                         if(HorizontalAlign != HorizontalAlign.NotSet)
 115                         {
 116                                 writer.AddAttribute(HtmlTextWriterAttribute.Align, TypeDescriptor.GetConverter(typeof(HorizontalAlign)).ConvertToString(HorizontalAlign));
 117                         }
 118                         if(!Wrap)
 119                         {
 120                                 writer.AddAttribute(HtmlTextWriterAttribute.Nowrap, "nowrap");
 121                         }
 122                 }
 123         }
 124 }