103 lines
3.5 KiB
C#
103 lines
3.5 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="NotifyParentPropertyAttribute.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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/*
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*/
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namespace System.ComponentModel {
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using System;
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using System.Security.Permissions;
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/// <devdoc>
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/// <para>
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/// Indicates whether the parent property is notified
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/// if a child namespace property is modified.
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/// </para>
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/// </devdoc>
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[AttributeUsage(AttributeTargets.Property)]
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public sealed class NotifyParentPropertyAttribute : Attribute {
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/// <devdoc>
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/// <para>
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/// Specifies that the parent property should be notified on changes to the child class property. This field is read-only.
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/// </para>
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/// </devdoc>
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public static readonly NotifyParentPropertyAttribute Yes = new NotifyParentPropertyAttribute(true);
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/// <devdoc>
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/// <para>Specifies that the parent property should not be notified of changes to the child class property. This field is read-only.</para>
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/// </devdoc>
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public static readonly NotifyParentPropertyAttribute No = new NotifyParentPropertyAttribute(false);
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/// <devdoc>
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/// <para>Specifies the default attribute state, that the parent property should not be notified of changes to the child class property.
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/// This field is read-only.</para>
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/// </devdoc>
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public static readonly NotifyParentPropertyAttribute Default = No;
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private bool notifyParent = false;
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/// <devdoc>
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/// <para>Initiailzes a new instance of the NotifyPropertyAttribute class
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/// that uses the specified value
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/// to indicate whether the parent property should be notified when a child namespace property is modified.</para>
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/// </devdoc>
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public NotifyParentPropertyAttribute(bool notifyParent) {
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this.notifyParent = notifyParent;
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}
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/// <devdoc>
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/// <para>
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/// Gets or sets whether the parent property should be notified
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/// on changes to a child namespace property.
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/// </para>
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/// </devdoc>
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public bool NotifyParent {
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get {
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return notifyParent;
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}
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}
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/// <devdoc>
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/// <para>
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/// Tests whether the specified object is the same as the current object.
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/// </para>
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/// </devdoc>
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public override bool Equals(object obj) {
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if (obj == this) {
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return true;
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}
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if ((obj != null) && (obj is NotifyParentPropertyAttribute)) {
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return ((NotifyParentPropertyAttribute)obj).NotifyParent == notifyParent;
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}
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return false;
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}
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/// <devdoc>
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/// <para>
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/// Returns the hashcode for this object.
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/// </para>
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/// </devdoc>
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public override int GetHashCode() {
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return base.GetHashCode();
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}
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/// <devdoc>
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/// <para>
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/// Gets whether this attribute is <see langword='true'/> by default.
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/// </para>
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/// </devdoc>
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public override bool IsDefaultAttribute() {
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return this.Equals(Default);
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}
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}
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}
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