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//------------------------------------------------------------------------------
// <copyright file="View.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.ComponentModel;
using System.Web;
using System.Web.UI;
[ParseChildren(false)]
[
Designer("System.Web.UI.Design.WebControls.ViewDesigner, " + AssemblyRef.SystemDesign)
]
[ToolboxData("<{0}:View runat=\"server\"></{0}:View>")]
public class View : Control {
private static readonly object _eventActivate = new object();
private static readonly object _eventDeactivate = new object();
private bool _active = false;
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
internal bool Active {
get {
return _active;
}
set {
_active = value;
// VSWhidbey 297515 - Need to make it visible explicity so views can be added during Render
base.Visible = true;
}
}
/// <devdoc>
/// <para>Gets and sets a value indicating whether theme is enabled.</para>
/// </devdoc>
[
Browsable(true)
]
public override bool EnableTheming {
get {
return base.EnableTheming;
}
set {
base.EnableTheming = value;
}
}
/// <devdoc>
/// <para>Occurs when the view is deactivated.</para>
/// </devdoc>
[
WebCategory("Action"),
WebSysDescription(SR.View_Activate)
]
public event EventHandler Activate {
add {
Events.AddHandler(_eventActivate, value);
}
remove {
Events.RemoveHandler(_eventActivate, value);
}
}
/// <devdoc>
/// <para>Occurs when the view is deactivated.</para>
/// </devdoc>
[
WebCategory("Action"),
WebSysDescription(SR.View_Deactivate)
]
public event EventHandler Deactivate {
add {
Events.AddHandler(_eventDeactivate, value);
}
remove {
Events.RemoveHandler(_eventDeactivate, value);
}
}
/// <devdoc>
/// <para>
/// Gets or sets a value that indicates whether the view should be rendered on
/// the page.
/// </para>
/// </devdoc>
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
WebCategory("Behavior"),
WebSysDescription(SR.Control_Visible)
]
public override bool Visible {
get {
if (Parent == null) {
return Active;
}
return Active && Parent.Visible;
}
set {
if (DesignMode) {
return;
}
throw new InvalidOperationException(SR.GetString(SR.View_CannotSetVisible));
}
}
/// <devdoc>
/// <para>Raises the <see langword='OnActivate '/>event.</para>
/// </devdoc>
protected internal virtual void OnActivate(EventArgs e) {
EventHandler handler = (EventHandler)Events[_eventActivate];
if (handler != null) {
handler(this, e);
}
}
/// <devdoc>
/// <para>Raises the <see langword='OnDeactivate '/>event.</para>
/// </devdoc>
protected internal virtual void OnDeactivate(EventArgs e) {
EventHandler handler = (EventHandler)Events[_eventDeactivate];
if (handler != null) {
handler(this, e);
}
}
}
}
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