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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="PropertyChangedBase.cs" company="HandBrake Project (http://handbrake.fr)">
// This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
// A base class that implements the infrastructure for property change notification and automatically performs UI thread marshalling.
// This class is a modified version of the caliburn micro
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrake.ApplicationServices.Utilities
{
using System;
using System.ComponentModel;
using System.Linq.Expressions;
using System.Runtime.Serialization;
/// <summary>
/// Property Changed Base implimentation.
/// </summary>
[DataContract]
public class PropertyChangedBase : INotifyPropertyChanged
{
/// <summary>
/// Creates an instance of <see cref = "PropertyChangedBase" />.
/// </summary>
public PropertyChangedBase()
{
IsNotifying = true;
}
/// <summary>
/// Occurs when a property value changes.
/// </summary>
public event PropertyChangedEventHandler PropertyChanged = delegate { };
/// <summary>
/// Enables/Disables property change notification.
/// </summary>
public bool IsNotifying { get; set; }
/// <summary>
/// Raises a change notification indicating that all bindings should be refreshed.
/// </summary>
public virtual void Refresh()
{
NotifyOfPropertyChange(string.Empty);
}
/// <summary>
/// Notifies subscribers of the property change.
/// </summary>
/// <param name = "propertyName">Name of the property.</param>
public virtual void NotifyOfPropertyChange(string propertyName = null)
{
if (IsNotifying)
{
OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
}
}
/// <summary>
/// Notifies subscribers of the property change.
/// </summary>
/// <typeparam name = "TProperty">The type of the property.</typeparam>
/// <param name = "property">The property expression.</param>
public void NotifyOfPropertyChange<TProperty>(Expression<Func<TProperty>> property)
{
NotifyOfPropertyChange(property.GetMemberInfo().Name);
}
/// <summary>
/// Raises the <see cref="PropertyChanged" /> event directly.
/// </summary>
/// <param name="e">The <see cref="PropertyChangedEventArgs"/> instance containing the event data.</param>
[EditorBrowsable(EditorBrowsableState.Never)]
protected void OnPropertyChanged(PropertyChangedEventArgs e)
{
var handler = PropertyChanged;
if (handler != null)
{
handler(this, e);
}
}
}
}
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