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//------------------------------------------------------------------------------
// <copyright file="ReadOnlyAttribute.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
/*
*/
namespace System.ComponentModel {
using System;
using System.Diagnostics;
using System.Security.Permissions;
/// <devdoc>
/// <para>Specifies whether the property this attribute is bound to
/// is read-only or read/write.</para>
/// </devdoc>
[AttributeUsage(AttributeTargets.All)]
public sealed class ReadOnlyAttribute : Attribute {
private bool isReadOnly = false;
/// <devdoc>
/// <para>
/// Specifies that the property this attribute is bound to is read-only and
/// cannot be modified in the server explorer. This <see langword='static '/>field is
/// read-only.
/// </para>
/// </devdoc>
public static readonly ReadOnlyAttribute Yes = new ReadOnlyAttribute(true);
/// <devdoc>
/// <para>
/// Specifies that the property this attribute is bound to is read/write and can
/// be modified at design time. This <see langword='static '/>field is read-only.
/// </para>
/// </devdoc>
public static readonly ReadOnlyAttribute No = new ReadOnlyAttribute(false);
/// <devdoc>
/// <para>
/// Specifies the default value for the <see cref='System.ComponentModel.ReadOnlyAttribute'/> , which is <see cref='System.ComponentModel.ReadOnlyAttribute.No'/>, that is,
/// the property this attribute is bound to is read/write. This <see langword='static'/> field is read-only.
/// </para>
/// </devdoc>
public static readonly ReadOnlyAttribute Default = No;
/// <devdoc>
/// <para>
/// Initializes a new instance of the <see cref='System.ComponentModel.ReadOnlyAttribute'/> class.
/// </para>
/// </devdoc>
public ReadOnlyAttribute(bool isReadOnly) {
this.isReadOnly = isReadOnly;
}
/// <devdoc>
/// <para>
/// Gets a value indicating whether the property this attribute is bound to is
/// read-only.
/// </para>
/// </devdoc>
public bool IsReadOnly {
get {
return isReadOnly;
}
}
/// <internalonly/>
/// <devdoc>
/// </devdoc>
public override bool Equals(object value) {
if (this == value) {
return true;
}
ReadOnlyAttribute other = value as ReadOnlyAttribute;
return other != null && other.IsReadOnly == IsReadOnly;
}
/// <devdoc>
/// <para>
/// Returns the hashcode for this object.
/// </para>
/// </devdoc>
public override int GetHashCode() {
return base.GetHashCode();
}
/// <internalonly/>
/// <devdoc>
/// <para>
/// Determines if this attribute is the default.
/// </para>
/// </devdoc>
public override bool IsDefaultAttribute() {
return (this.IsReadOnly == Default.IsReadOnly);
}
}
}
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