Grantlee 0.2.0
templates/lib/variable.h
00001 /*
00002   This file is part of the Grantlee template system.
00003 
00004   Copyright (c) 2009,2010 Stephen Kelly <steveire@gmail.com>
00005 
00006   This library is free software; you can redistribute it and/or
00007   modify it under the terms of the GNU Lesser General Public
00008   License as published by the Free Software Foundation; either version
00009   2.1 of the Licence, or (at your option) any later version.
00010 
00011   This library is distributed in the hope that it will be useful,
00012   but WITHOUT ANY WARRANTY; without even the implied warranty of
00013   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014   Lesser General Public License for more details.
00015 
00016   You should have received a copy of the GNU Lesser General Public
00017   License along with this library.  If not, see <http://www.gnu.org/licenses/>.
00018 
00019 */
00020 
00021 #ifndef GRANTLEE_VARIABLE_H
00022 #define GRANTLEE_VARIABLE_H
00023 
00024 #include "grantlee_core_export.h"
00025 
00026 #include <QtCore/QVariant>
00027 
00028 namespace Grantlee
00029 {
00030 class Context;
00031 
00032 class VariablePrivate;
00033 
00035 
00050 class GRANTLEE_CORE_EXPORT Variable
00051 {
00052 public:
00056   Variable();
00057 
00061   explicit Variable( const QString &var );
00062 
00066   Variable( const Variable &other );
00067 
00071   ~Variable();
00072 
00076   Variable &operator=( const Variable &other );
00077 
00081   bool isValid() const;
00082 
00086   bool isTrue( Context *c ) const;
00087 
00091   QVariant resolve( Context *c ) const;
00092 
00101   bool isConstant() const;
00102 
00103 private:
00104   Q_DECLARE_PRIVATE( Variable )
00105   VariablePrivate * const d_ptr;
00106 };
00107 
00108 }
00109 
00110 #endif
00111