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46 lines
No EOL
1.5 KiB
C#
46 lines
No EOL
1.5 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2013 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Greenshot.Drawing.Fields.Binding
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{
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/// <summary>
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/// Validates a value not to be null.
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/// </summary>
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public class NotNullValidator : IBindingValidator
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{
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private static NotNullValidator uniqueInstance;
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private NotNullValidator()
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{
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}
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public bool validate(object o)
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{
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return o != null;
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}
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public static NotNullValidator GetInstance()
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{
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if (uniqueInstance == null) uniqueInstance = new NotNullValidator();
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return uniqueInstance;
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}
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}
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} |