#region License
/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
using System.ComponentModel;
using System.Globalization;
#endregion
namespace Spring.Core.TypeConversion{
/// <summary>
/// Converter for <see cref="System.Uri"/> instances.
/// </summary>
/// <author>Juergen Hoeller</author>
/// <author>Mark Pollack (.NET)</author>
public class UriConverter : TypeConverter
{
#region Constructor (s) / Destructor
/// <summary>
/// Creates a new instance of the
/// <see cref="Spring.Core.TypeConversion.UriConverter"/> class.
/// </summary>
public UriConverter () {}
#endregion
#region Methods
/// <summary>
/// Returns whether this converter can convert an object of one
/// <see cref="System.Type"/> to a <see cref="System.Uri"/>
/// </summary>
/// <remarks>
/// <p>
/// Currently only supports conversion from a
/// <see cref="System.String"/> instance.
/// </p>
/// </remarks>
/// <param name="context">
/// A <see cref="System.ComponentModel.ITypeDescriptorContext"/>
/// that provides a format context.
/// </param>
/// <param name="sourceType">
/// A <see cref="System.Type"/> that represents the
/// <see cref="System.Type"/> you want to convert from.
/// </param>
/// <returns>True if the conversion is possible.</returns>
public override bool CanConvertFrom (
ITypeDescriptorContext context,
Type sourceType)
{
if (sourceType == typeof (string))
{
return true;
}
return base.CanConvertFrom (context, sourceType);
}
/// <summary>
/// Convert from a string value to a <see cref="System.Uri"/> instance.
/// </summary>
/// <param name="context">
/// A <see cref="System.ComponentModel.ITypeDescriptorContext"/>
/// that provides a format context.
/// </param>
/// <param name="culture">
/// The <see cref="System.Globalization.CultureInfo"/> to use
/// as the current culture.
/// </param>
/// <param name="value">
/// The value that is to be converted.
/// </param>
/// <returns>
/// A <see cref="System.Uri"/> if successful.
/// </returns>
public override object ConvertFrom (
ITypeDescriptorContext context,
CultureInfo culture, object value)
{
if (value is string)
{
try
{
return new Uri(value as string);
}
catch (UriFormatException ex)
{
throw new ArgumentException("Malformed URL: ", ex);
}
}
return base.ConvertFrom (context, culture, value);
}
#endregion
}
}
|