#region License
/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
#endregion
namespace Spring.Web.UI.Controls{
#if !NET_2_0
/// <summary>
/// Represents a control that acts as a container for a group of controls within a <see cref="MultiView"/> control.
/// </summary>
[ParseChildren(false, null)
, ToolboxData("<{0}:View runat=\"server\"></{0}:View>")
, AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)
, AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class View : Control
{
private bool _active;
private static readonly object _eventActivate = new object();
private static readonly object _eventDeactivate = new object();
/// <summary>
/// Occurs when the current View control becomes the active view.
/// </summary>
public event EventHandler Activate
{
add { base.Events.AddHandler(_eventActivate, value); }
remove { base.Events.RemoveHandler(_eventActivate, value); }
}
/// <summary>
/// Occurs when the current active View control becomes inactive.
/// </summary>
public event EventHandler Deactivate
{
add { base.Events.AddHandler(_eventDeactivate, value); }
remove { base.Events.RemoveHandler(_eventDeactivate, value); }
}
/// <summary>
/// Raises the <see cref="Activate"/> event of the View control.
/// </summary>
protected internal virtual void OnActivate(EventArgs e)
{
EventHandler handler = (EventHandler) base.Events[_eventActivate];
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="Deactivate"/> event of the View control.
/// </summary>
protected internal virtual void OnDeactivate(EventArgs e)
{
EventHandler handler = (EventHandler) base.Events[_eventDeactivate];
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Gets a value that indicates, if this control has been instantiated by a designer.
/// </summary>
protected bool DesignMode
{
get { return Context == null; }
}
/// <summary>
/// Gets or Sets a value that indicates, if this control is currently active.
/// </summary>
internal bool Active
{
get { return _active; }
set
{
_active = value;
base.Visible = value;
}
}
/// <summary>
/// Gets a value that indicates, whether this view will be rendered as UI.
/// </summary>
public override bool Visible
{
get
{
if (Parent == null)
{
return Active;
}
if (Active)
{
return Parent.Visible;
}
return false;
}
set
{
if (!DesignMode)
{
throw new InvalidOperationException("View_CannotSetVisible");
}
}
}
}
#endif // !NET_2_0
}
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