/*
* Greenshot - a free and open source screenshot tool
* Copyright (C) 2007-2013 Thomas Braun, Jens Klingen, Robin Krom
*
* For more information see: http://getgreenshot.org/
* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
namespace Greenshot.Drawing.Fields.Binding
{
///
/// Validates a value not to be null.
///
public class NotNullValidator : IBindingValidator
{
private static NotNullValidator uniqueInstance;
private NotNullValidator()
{
}
public bool validate(object o)
{
return o != null;
}
public static NotNullValidator GetInstance()
{
if (uniqueInstance == null) uniqueInstance = new NotNullValidator();
return uniqueInstance;
}
}
}