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//
// System.Web.UI.FilterableAttribute
//
// Authors:
// Sanjay Gupta (gsanjay@novell.com)
//
// (C) 2004 Novell, Inc. (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System;
using System.ComponentModel;
namespace System.Web.UI {
[AttributeUsage (AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
public sealed class FilterableAttribute : Attribute, IDisposable
{
private bool filterable;
private bool dispose;
public FilterableAttribute (bool filterable)
{
this.filterable = filterable;
}
public static readonly FilterableAttribute Default = new FilterableAttribute (true);
public static readonly FilterableAttribute No = new FilterableAttribute (false);
public static readonly FilterableAttribute Yes = new FilterableAttribute (true);
public bool Filterable {
get { return filterable; }
}
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
private void Dispose (bool disposing)
{
if (!this.dispose) {
//Do nothing
this.dispose = true;
}
}
public override bool Equals (object obj)
{
if (obj != null && obj is FilterableAttribute) {
FilterableAttribute fa = (FilterableAttribute) obj;
return (this.filterable == fa.filterable);
}
return false;
}
public override int GetHashCode ()
{
return this.filterable.GetHashCode ();
}
public override bool IsDefaultAttribute ()
{
return Equals (Default);
}
public static bool IsObjectFilterable (object obj)
{
return IsTypeFilterable (obj.GetType ());
}
public static bool IsPropertyFilterable (PropertyDescriptor propDesc)
{
System.ComponentModel.AttributeCollection attributes = propDesc.Attributes;
if (attributes.Count != 0) {
foreach (Attribute attrib in attributes)
if (attrib is FilterableAttribute)
return true;
}
return false;
}
public static bool IsTypeFilterable (Type type)
{
Object [] attributes = type.GetCustomAttributes (typeof (FilterableAttribute), false);
if (attributes.Length != 0) {
foreach (Attribute attrib in attributes)
if (attrib is FilterableAttribute)
return true;
}
return false;
}
}
}
#endif
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