using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Linq.Expressions;
using System.Reflection;
namespace SC
{
/// <summary>
/// notification object base class
/// </summary>
public abstract class NotificationObject : INotifyPropertyChanged
{
/// <summary>
/// property changed handler
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// raise property changed handler
/// </summary>
/// <param name="propertyName">property name to raise</param>
protected virtual void RaisePropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = this.PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
/// <summary>
/// raise many property changed handler
/// </summary>
/// <param name="propertyNames">properties to raise</param>
protected void RaisePropertyChanged(params string[] propertyNames)
{
if (propertyNames == null)
{
throw new ArgumentNullException("propertyNames");
}
foreach (var propertyName in propertyNames)
{
this.RaisePropertyChanged(() => propertyName);
}
}
/// <summary>
/// Raises the <see cref="PropertyChanged"/> event using expression.
/// </summary>
/// <typeparam name="TP">Expression</typeparam>
/// <param name="property">Property</param>
protected void RaisePropertyChanged<T>(Expression<Func<T>> property)
{
var propertyInfo = (property.Body as MemberExpression).Member as PropertyInfo;
if (null == propertyInfo)
{
throw new ArgumentException("The lambda expression 'property' should point to a valid Property");
}
RaisePropertyChanged(propertyInfo.Name);
}
}
}