// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
using System;
using System.ComponentModel;
using System.Globalization;
namespace ICSharpCode.AvalonEdit.Highlighting
{
/// <summary>
/// Converts between strings and <see cref="IHighlightingDefinition"/> by treating the string as the definition name
/// and calling <c>HighlightingManager.Instance.<see cref="HighlightingManager.GetDefinition">GetDefinition</see>(name)</c>.
/// </summary>
public sealed class HighlightingDefinitionTypeConverter : TypeConverter
{
/// <inheritdoc/>
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof(string))
return true;
else
return base.CanConvertFrom(context, sourceType);
}
/// <inheritdoc/>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
string definitionName = value as string;
if (definitionName != null)
return HighlightingManager.Instance.GetDefinition(definitionName);
else
return base.ConvertFrom(context, culture, value);
}
/// <inheritdoc/>
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof(string))
return true;
else
return base.CanConvertTo(context, destinationType);
}
/// <inheritdoc/>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
IHighlightingDefinition definition = value as IHighlightingDefinition;
if (definition != null && destinationType == typeof(string))
return definition.Name;
else
return base.ConvertTo(context, culture, value, destinationType);
}
}
}