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//------------------------------------------------------------------------------
// <copyright file="PersistChildrenAttribute.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI {
using System;
using System.ComponentModel;
/// <devdoc>
/// <para>
/// Indicates whether
/// the contents within a tag representing a custom
/// or Web control should be treated as literal text. Web controls supporting complex properties, like
/// templates, and
/// so on, typically mark themselves as "literals", thereby letting the designer
/// infra-structure deal with the persistence of those attributes.</para>
/// </devdoc>
[AttributeUsage(AttributeTargets.Class)]
public sealed class PersistChildrenAttribute : Attribute {
/// <devdoc>
/// <para>Indicates that the children of a control should be persisted at design-time.
/// </para>
/// </devdoc>
public static readonly PersistChildrenAttribute Yes = new PersistChildrenAttribute(true);
/// <devdoc>
/// <para>Indicates that the children of a control should not be persisted at design-time.</para>
/// </devdoc>
public static readonly PersistChildrenAttribute No = new PersistChildrenAttribute(false);
/// <devdoc>
/// This marks the default child persistence behavior for a control at design time. (equal to Yes.)
/// </devdoc>
public static readonly PersistChildrenAttribute Default = Yes;
private bool _persist;
private bool _usesCustomPersistence;
/// <devdoc>
/// </devdoc>
public PersistChildrenAttribute(bool persist) {
_persist = persist;
}
public PersistChildrenAttribute(bool persist, bool usesCustomPersistence) : this(persist) {
_usesCustomPersistence = usesCustomPersistence;
}
/// <devdoc>
/// <para>Indicates whether the children of a control should be persisted at design-time.
/// This property is read-only.</para>
/// </devdoc>
public bool Persist {
get {
return _persist;
}
}
/// <devdoc>
/// <para>Indicates whether the control does custom persistence.
/// This property is read-only.</para>
/// </devdoc>
public bool UsesCustomPersistence {
get {
// if persist is true, we don't use custom persistence.
return !_persist && _usesCustomPersistence;
}
}
/// <devdoc>
/// </devdoc>
/// <internalonly/>
public override int GetHashCode() {
return Persist.GetHashCode();
}
/// <devdoc>
/// </devdoc>
/// <internalonly/>
public override bool Equals(object obj) {
if (obj == this) {
return true;
}
if ((obj != null) && (obj is PersistChildrenAttribute)) {
return ((PersistChildrenAttribute)obj).Persist == _persist;
}
return false;
}
/// <devdoc>
/// </devdoc>
/// <internalonly/>
public override bool IsDefaultAttribute() {
return this.Equals(Default);
}
}
}
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