130 lines
No EOL
3.7 KiB
C++
130 lines
No EOL
3.7 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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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 Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef BOUND_CHECKER_H
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#define BOUND_CHECKER_H
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#include <nel/misc/types_nl.h>
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/// This class implement bound checking for values. Can be used in an edition dialog
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template <class T>
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class CBoundChecker
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{
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public:
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/** ctor
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* the default doesn't enable bound checking
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*/
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CBoundChecker() : _UpperBoundEnabled(false), _LowerBoundEnabled(false) {}
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/** enable upper bound use (e.g. value must be < or <= upper bound )
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* \param upperBoundExcluded if true then the test is <, otherwise its <=
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*/
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void enableUpperBound(T upperBound, bool upperBoundExcluded)
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{
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_UpperBoundEnabled = true;
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_UpperBoundExcluded = upperBoundExcluded;
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_UpperBound = upperBound;
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}
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// disable upper bound usage
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void disableUpperBound(void) { _UpperBoundEnabled = false; }
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// get the upper bound
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T getUpperBound(void) const { return _UpperBound; }
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// test whether the upper bound is excluded of the test
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bool isUpperBoundExcluded(void) const
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{
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return _UpperBoundExcluded;
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}
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/** enable lower bound use (e.g. value must be < or <= lower bound )
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* \param lowerBoundExcluded if true then the test is <, otherwise its <=
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*/
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void enableLowerBound(T lowerBound, bool lowerBoundExcluded)
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{
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_LowerBoundEnabled = true;
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_LowerBoundExcluded = lowerBoundExcluded;
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_LowerBound = lowerBound;
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}
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// disable lower bound
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void disableLowerBound(void) { _LowerBoundEnabled = false; }
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// get the lower bound
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T getLowerBound(void) const { return _LowerBound; }
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// test whether the lower bound is excluded of the test
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bool isLowerBoundExcluded(void) const
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{
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return _LowerBoundExcluded;
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}
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/** validate a value against upper bound. (if an upper bound was set
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* \return NULL if ok or an error message
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*/
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const TCHAR *validateUpperBound(T v)
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{
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if (!_UpperBoundEnabled) return NULL;
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if (_UpperBoundExcluded && v < _UpperBound) return NULL;
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if (!_UpperBoundExcluded && v <= _UpperBound) return NULL;
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return _T("value too high");
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}
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/** validate a value against lower bound. (if an lower bound was set
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* \return NULL if ok or an error message
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*/
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const TCHAR *validateLowerBound(T v)
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{
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if (!_LowerBoundEnabled) return NULL;
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if (_LowerBoundExcluded && v > _LowerBound) return NULL;
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if (!_LowerBoundExcluded && v >= _LowerBound) return NULL;
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return _T("value too low");
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}
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/// copy this bound checker object to another one
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void duplicateBoundChecker(CBoundChecker<T> &dup)
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{
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dup._LowerBound = _LowerBound;
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dup._LowerBoundEnabled = _LowerBoundEnabled;
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dup._LowerBoundExcluded = _LowerBoundExcluded;
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dup._UpperBound = _UpperBound;
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dup._UpperBoundEnabled = _UpperBoundEnabled;
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dup._UpperBoundExcluded = _UpperBoundExcluded;
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}
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protected:
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bool _UpperBoundEnabled;
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bool _UpperBoundExcluded;
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T _UpperBound;
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bool _LowerBoundEnabled;
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bool _LowerBoundExcluded;
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T _LowerBound;
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};
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/// some typedefs
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typedef CBoundChecker<float> CBoundCheckerFloat;
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typedef CBoundChecker<uint32> CBoundCheckerUInt;
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typedef CBoundChecker<sint32> CBoundCheckerInt;
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#endif |