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//---------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//---------------------------------------------------------------------------
using System;
using System.ComponentModel;
using System.Globalization;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
namespace System.Windows.Markup
{
/// <summary>
/// TypeConverter for a resource value expression
/// </summary>
public class ComponentResourceKeyConverter : ExpressionConverter
{
/// <summary>
/// TypeConverter method override.
/// </summary>
/// <param name="context">
/// ITypeDescriptorContext
/// </param>
/// <param name="sourceType">
/// Type to convert from
/// </param>
/// <returns>
/// true if conversion is possible
/// </returns>
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == null)
{
throw new ArgumentNullException("sourceType");
}
return base.CanConvertFrom(context, sourceType);
}
/// <summary>
/// TypeConverter method override.
/// </summary>
/// <param name="context">
/// ITypeDescriptorContext
/// </param>
/// <param name="destinationType">
/// Type to convert to
/// </param>
/// <returns>
/// true if conversion is possible
/// </returns>
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
// Validate Input Arguments
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
return base.CanConvertTo(context, destinationType);
}
/// <summary>
/// TypeConverter method implementation.
/// </summary>
/// <param name="context">
/// ITypeDescriptorContext
/// </param>
/// <param name="culture">
/// current culture (see CLR specs)
/// </param>
/// <param name="value">
/// value to convert from
/// </param>
/// <returns>
/// value that is result of conversion
/// </returns>
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
return base.ConvertFrom(context, culture, value);
}
/// <summary>
/// TypeConverter method implementation.
/// </summary>
/// <param name="context">
/// ITypeDescriptorContext
/// </param>
/// <param name="culture">
/// current culture (see CLR specs)
/// </param>
/// <param name="value">
/// value to convert from
/// </param>
/// <param name="destinationType">
/// Type to convert to
/// </param>
/// <returns>
/// converted value
/// </returns>
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
{
// Validate Input Arguments
ComponentResourceKey key = value as ComponentResourceKey;
if (key == null)
{
throw new ArgumentException(SR.Get(SRID.MustBeOfType, "value", "ComponentResourceKey"));
}
if (destinationType == null)
{
throw new ArgumentNullException("destinationType");
}
return base.CanConvertTo(context, destinationType);
}
}
}
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