#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.Globalization;
using System.Reflection;
#endregion
namespace Spring.Objects.Support{
/// <summary>
/// Describes an event handler for a static class method.
/// </summary>
/// <author>Rick Evans</author>
public class StaticEventHandlerValue : AbstractWiringEventHandlerValue
{
#region Constants
private static readonly BindingFlags StaticMethodFlags =
BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.IgnoreCase;
#endregion
#region Constructor (s) / Destructor
/// <summary>
/// Creates a new instance of the
/// <see cref="Spring.Objects.Support.StaticEventHandlerValue"/> class.
/// </summary>
public StaticEventHandlerValue ()
{
}
/// <summary>
/// Creates a new instance of the
/// <see cref="Spring.Objects.Support.StaticEventHandlerValue"/> class.
/// </summary>
/// <param name="source">
/// The object (possibly unresolved) that is exposing the event.
/// </param>
/// <param name="methodName">
/// The name of the method on the handler that is going to handle the event.
/// </param>
public StaticEventHandlerValue (object source, string methodName)
: base (source, methodName) {}
#endregion
#region Methods
/// <summary>
/// Gets the event handler.
/// </summary>
/// <param name="instance">
/// The instance that is registering for the event notification.
/// </param>
/// <param name="info">
/// Event metadata about the event.
/// </param>
/// <returns>
/// The event handler.
/// </returns>
protected override Delegate GetHandler(object instance, EventInfo info)
{
Type type = instance as Type;
if (type == null)
{
throw new FatalObjectException (string.Format (
CultureInfo.InvariantCulture,
"Only 'System.Type' instances can be wired by instances of " +
"the StaticEventHandlerValue class; got '{0}'", instance));
}
MethodInfo method = ResolveHandlerMethod (
type,
info.EventHandlerType,
StaticEventHandlerValue.StaticMethodFlags);
return Delegate.CreateDelegate (info.EventHandlerType, method);
}
#endregion
}
}
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