CyberX8/Framework/ClientBase/OpenSEMI.ClientBase.Command/PropertyCommandTrigger.cs

using System.ComponentModel;
using System.Windows;

namespace OpenSEMI.ClientBase.Command
{
	public class PropertyCommandTrigger : CommandTrigger
	{
		public static readonly DependencyProperty PropertyProperty = DependencyProperty.Register("Property", typeof(DependencyProperty), typeof(PropertyCommandTrigger), new FrameworkPropertyMetadata(null));

		public static readonly DependencyProperty ValueProperty = DependencyProperty.Register("Value", typeof(string), typeof(PropertyCommandTrigger), new FrameworkPropertyMetadata(null));

		public static readonly DependencyProperty TProperty = DependencyProperty.Register("T", typeof(object), typeof(PropertyCommandTrigger), new FrameworkPropertyMetadata(null, OnTChanged));

		public DependencyProperty Property
		{
			get
			{
				return (DependencyProperty)GetValue(PropertyProperty);
			}
			set
			{
				SetValue(PropertyProperty, value);
			}
		}

		public string Value
		{
			get
			{
				return (string)GetValue(ValueProperty);
			}
			set
			{
				SetValue(ValueProperty, value);
			}
		}

		public object T
		{
			get
			{
				return GetValue(TProperty);
			}
			set
			{
				SetValue(TProperty, value);
			}
		}

		protected override Freezable CreateInstanceCore()
		{
			return new PropertyCommandTrigger();
		}

		private static void OnTChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
		{
		}

		protected override void InitializeCore(FrameworkElement source)
		{
			DependencyPropertyDescriptor descriptor = DependencyPropertyDescriptor.FromProperty(Property, source.GetType());
			descriptor.AddValueChanged(source, delegate
			{
				CommandParameter<object> parameter = new PropertyCommandParameter<object, object>(base.CustomParameter, Property, source.GetValue(Property));
				object objB = Value;
				if (descriptor.Converter.CanConvertFrom(typeof(string)))
				{
					objB = descriptor.Converter.ConvertFromString(Value);
				}
				if (object.Equals(source.GetValue(Property), objB))
				{
					ExecuteCommand(parameter);
				}
			});
		}
	}
}