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//
// System.ComponentModel.CultureInfoConverter
//
// Authors:
// Martin Willemoes Hansen (mwh@sysrq.dk)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
// Ivan N. Zlatev <contact@i-nz.net>
//
// (C) 2003 Martin Willemoes Hansen
// (C) 2003 Andreas Nahr
// (C) 2008 Novell, Inc. (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.Globalization;
using System.Reflection;
using System.ComponentModel.Design.Serialization;
namespace System.ComponentModel
{
public class CultureInfoConverter : TypeConverter
{
private class CultureInfoComparer : IComparer
{
public int Compare (object first, object second)
{
if (first == null) {
if (second == null)
return 0;
else
return -1;
}
if (second == null)
return 1;
return String.Compare (((CultureInfo)first).DisplayName, ((CultureInfo)second).DisplayName,
false, CultureInfo.CurrentCulture);
}
}
private StandardValuesCollection _standardValues;
public CultureInfoConverter()
{
}
public override bool CanConvertFrom (ITypeDescriptorContext context,
Type sourceType)
{
if (sourceType == typeof (string))
return true;
return base.CanConvertFrom (context, sourceType);
}
public override bool CanConvertTo (ITypeDescriptorContext context,
Type destinationType)
{
if (destinationType == typeof (string))
return true;
if (destinationType == typeof (InstanceDescriptor))
return true;
return base.CanConvertTo (context, destinationType);
}
public override object ConvertFrom (ITypeDescriptorContext context,
CultureInfo culture, object value)
{
string culture_string = value as string;
if (culture_string != null) {
#if NET_2_0
if (String.Compare (culture_string, "(Default)", false) == 0)
#else
if (String.Compare (culture_string, "(Default)", true) == 0)
#endif
return CultureInfo.InvariantCulture;
try {
// try to create a new CultureInfo if form is RFC 1766
return new CultureInfo (culture_string);
} catch {
// try to create a new CultureInfo if form is verbose name
foreach (CultureInfo CI in CultureInfo.GetCultures (CultureTypes.AllCultures))
if (string.Compare (CI.DisplayName, 0, culture_string, 0, culture_string.Length, true) == 0)
return CI;
}
throw new ArgumentException (string.Format (
"Culture {0} cannot be converted to a " +
"CultureInfo or is not available in " +
"this environment.", value));
}
return base.ConvertFrom (context, culture, value);
}
public override object ConvertTo (ITypeDescriptorContext context,
CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof (string)) {
if (value != null && (value is CultureInfo)) {
if (value == CultureInfo.InvariantCulture)
return "(Default)";
else
return ((CultureInfo) value).DisplayName;
} else {
return "(Default)";
}
}
if (destinationType == typeof (InstanceDescriptor) && value is CultureInfo) {
CultureInfo cval = (CultureInfo) value;
ConstructorInfo ctor = typeof(CultureInfo).GetConstructor (new Type[] {typeof(int)});
return new InstanceDescriptor (ctor, new object[] {cval.LCID});
}
return base.ConvertTo (context, culture, value, destinationType);
}
public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
{
if (_standardValues == null) {
CultureInfo[] cultures = CultureInfo.GetCultures (CultureTypes.AllCultures);
Array.Sort (cultures, new CultureInfoComparer ());
CultureInfo[] stdValues = new CultureInfo[cultures.Length + 1];
stdValues[0] = CultureInfo.InvariantCulture;
Array.Copy (cultures, 0, stdValues, 1, cultures.Length);
_standardValues = new StandardValuesCollection (stdValues);
}
return _standardValues;
}
public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
{
return false;
}
public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
{
return true;
}
}
}
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