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//------------------------------------------------------------------------------
// <copyright file="UrlPropertyAttribute.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI {
using System;
using System.ComponentModel;
using System.Web.Util;
// An UrlPropertyAttribute metadata attribute can be applied to string
// properties that contain URL values.
// This can be used to identify URLs which allows design-time functionality and runtime
// functionality to do interesting things with the property values.
[AttributeUsage(AttributeTargets.Property)]
public sealed class UrlPropertyAttribute : Attribute {
private string _filter;
// Used to mark a property as an URL.
public UrlPropertyAttribute() : this("*.*") {
}
// Used to mark a property as an URL. In addition, the type of files allowed
// can be specified. This can be used at design-time to customize the URL picker.
public UrlPropertyAttribute(string filter) {
if(filter == null) {
_filter = "*.*";
}
else {
_filter = filter;
}
}
// The file filter associated with the URL property. This takes
// the form of a file filter string typically used with Open File
// dialogs. The default is *.*, so all file types can be chosen.
public string Filter {
get {
return _filter;
}
}
public override int GetHashCode() {
return Filter.GetHashCode();
}
public override bool Equals(object obj) {
if (obj == this) {
return true;
}
UrlPropertyAttribute other = obj as UrlPropertyAttribute;
if (other != null) {
return Filter.Equals(other.Filter);
}
return false;
}
}
}
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