#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.ComponentModel;
#endregion
namespace Spring.Core{
/// <summary>
/// Provides additional data for the <c>PropertyChanged</c> event.
/// </summary>
/// <remarks>
/// <p>
/// Provides some additional properties over and above the name of the
/// property that has changed (which is inherited from the
/// <see cref="System.ComponentModel.PropertyChangedEventArgs"/> base class).
/// This allows calling code to determine whether or not a property has
/// actually changed (i.e. a <c>PropertyChanged</c> event may have been
/// raised, but the value itself may be equivalent).
/// </p>
/// </remarks>
/// <seealso cref="System.ComponentModel.PropertyChangedEventArgs"/>
[Serializable]
public class PropertyChangeEventArgs : PropertyChangedEventArgs
{
private object oldValue;
private object newValue;
/// <summary>
/// Create a new instance of the
/// <see cref="Spring.Core.PropertyChangeEventArgs"/> class.
/// </summary>
/// <param name="propertyName">
/// The name of the property that was changed.</param>
/// <param name="oldValue">The old value of the property.</param>
/// <param name="newValue">the new value of the property.</param>
public PropertyChangeEventArgs(
string propertyName, object oldValue, object newValue) : base(propertyName)
{
this.oldValue = oldValue;
this.newValue = newValue;
}
/// <summary>
/// Get the old value for the property.
/// </summary>
/// <seealso cref="System.ComponentModel.PropertyChangedEventArgs.PropertyName"/>
public object OldValue
{
get { return oldValue; }
}
/// <summary>
/// Get the new value of the property.
/// </summary>
/// <seealso cref="System.ComponentModel.PropertyChangedEventArgs.PropertyName"/>
public object NewValue
{
get { return newValue; }
}
}
}
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