/Main/src/DynamicDataDisplay/Converters/GenericValueConverter.cs

 1using System;
 2using System.Collections.Generic;
 3using System.Linq;
 4using System.Text;
 5using System.Windows.Data;
 6using System.Globalization;
 7
 8namespace Microsoft.Research.DynamicDataDisplay.Converters
 9{
10	/// <summary>
11	/// Represents a typed value converter. It simplifies life of its sub-class as there no need to
12	/// check what types arguments have.
13	/// </summary>
14	/// <typeparam name="T"></typeparam>
15	public class GenericValueConverter<T> : IValueConverter
16	{
17		/// <summary>
18		/// Initializes a new instance of the <see cref="GenericValueConverter&lt;T&gt;"/> class.
19		/// </summary>
20		public GenericValueConverter() { }
21
22		private Func<T, object> conversion;
23		public GenericValueConverter(Func<T, object> conversion)
24		{
25			if (conversion == null)
26				throw new ArgumentNullException("conversion");
27
28			this.conversion = conversion;
29		}
30
31		#region IValueConverter Members
32
33		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
34		{
35			if (value is T)
36			{
37				T genericValue = (T)value;
38
39				object result = ConvertCore(genericValue, targetType, parameter, culture);
40				return result;
41			}
42			return null;
43		}
44
45		public virtual object ConvertCore(T value, Type targetType, object parameter, CultureInfo culture)
46		{
47			if (conversion != null)
48			{
49				return conversion(value);
50			}
51
52			throw new NotImplementedException();
53		}
54
55		public virtual object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
56		{
57			throw new NotSupportedException();
58		}
59
60		#endregion
61	}
62}