class/System.Web/System.Web.UI.WebControls/View.cs

   1 //
   2 // System.Web.UI.WebControls.View.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //
   7 // (C) 2004 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 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  29 //
  30
  31 #if NET_2_0
  32
  33 using System;
  34 using System.Globalization;
  35 using System.Web;
  36 using System.Web.UI;
  37 using System.ComponentModel;
  38
  39 namespace System.Web.UI.WebControls
  40 {
  41         [ParseChildrenAttribute (false)]
  42         [DesignerAttribute ("System.Web.UI.Design.WebControls.ViewDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  43         [ToolboxDataAttribute ("<{0}:View runat=\"server\"></{0}:View>")]
  44         public class View: Control
  45         {
  46                 static readonly object ActivateEvent = new object();
  47                 static readonly object DeactivateEvent = new object();
  48
  49                 public View ()
  50                 {
  51                         base.Visible = false;
  52                 }
  53
  54                 internal void NotifyActivation (bool activated)
  55                 {
  56                         if (activated) OnActivate (EventArgs.Empty);
  57                         else OnDeactivate (EventArgs.Empty);
  58                 }
  59
  60                 public event EventHandler Activate {
  61                         add { Events.AddHandler (ActivateEvent, value); }
  62                         remove { Events.RemoveHandler (ActivateEvent, value); }
  63                 }
  64
  65                 public event EventHandler Deactivate {
  66                         add { Events.AddHandler (DeactivateEvent, value); }
  67                         remove { Events.RemoveHandler (DeactivateEvent, value); }
  68                 }
  69
  70                 protected virtual void OnActivate (EventArgs e)
  71                 {
  72                         if (Events != null) {
  73                                 EventHandler eh = (EventHandler) Events [ActivateEvent];
  74                                 if (eh != null) eh (this, e);
  75                         }
  76                 }
  77
  78                 protected virtual void OnDeactivate (EventArgs e)
  79                 {
  80                         if (Events != null) {
  81                                 EventHandler eh = (EventHandler) Events [DeactivateEvent];
  82                                 if (eh != null) eh (this, e);
  83                         }
  84                 }
  85
  86                 internal bool VisibleInternal
  87                 {
  88                         get { return base.Visible; }
  89                         set { base.Visible = value; }
  90                 }
  91
  92                 public override bool Visible
  93                 {
  94                         get { return base.Visible; }
  95                         set
  96                         {
  97                                 throw new InvalidOperationException ("The Visible property of a View control can only be set by setting the active View of a MultiView.");
  98                         }
  99                 }
 100         }
 101 }
 102
 103 #endif