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/************************************************************************
Extended WPF Toolkit
Copyright (C) 2010-2012 Xceed Software Inc.
This program is provided to you under the terms of the Microsoft Public
License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
This program can be provided to you by Xceed Software Inc. under a
proprietary commercial license agreement for use in non-Open Source
projects. The commercial version of Extended WPF Toolkit also includes
priority technical support, commercial updates, and many additional
useful WPF controls if you license Xceed Business Suite for WPF.
Visit http://xceed.com and follow @datagrid on Twitter.
**********************************************************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;
using System.Globalization;
using System.ComponentModel;
using System.Windows;
using System.Reflection;
namespace Xceed.Wpf.Toolkit.PropertyGrid.Converters
{
public class SelectedObjectConverter : IValueConverter
{
private const string ValidParameterMessage = @"parameter must be one of the following strings: 'Type', 'TypeName'";
#region IValueConverter Members
public object Convert( object value, Type targetType, object parameter, CultureInfo culture )
{
if( parameter == null )
throw new ArgumentNullException( "parameter" );
if( !( parameter is string ) )
throw new ArgumentException( SelectedObjectConverter.ValidParameterMessage );
if( this.CompareParam(parameter, "Type") )
{
return this.ConvertToType( value, culture );
}
else if( this.CompareParam( parameter, "TypeName" ) )
{
return this.ConvertToTypeName( value, culture );
}
else
{
throw new ArgumentException( SelectedObjectConverter.ValidParameterMessage );
}
}
private bool CompareParam(object parameter, string parameterValue )
{
return string.Compare( ( string )parameter, parameterValue, true ) == 0;
}
private object ConvertToType( object value, CultureInfo culture )
{
return ( value != null )
? value.GetType()
: null;
}
private object ConvertToTypeName( object value, CultureInfo culture )
{
if( value == null )
return string.Empty;
Type newType = value.GetType();
DisplayNameAttribute displayNameAttribute = newType.GetCustomAttributes( false ).OfType<DisplayNameAttribute>().FirstOrDefault();
return (displayNameAttribute == null)
? newType.Name
: displayNameAttribute.DisplayName;
}
public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture )
{
throw new NotImplementedException();
}
#endregion
}
}