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