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112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
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* (C) 2000 Antti Koivisto (koivisto@kde.org)
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* (C) 2000 Dirk Mueller (mueller@kde.org)
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* Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
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* Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef CounterDirectives_h
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#define CounterDirectives_h
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#include "wtf/HashMap.h"
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#include "wtf/MathExtras.h"
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#include "wtf/RefPtr.h"
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#include "wtf/text/AtomicString.h"
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#include "wtf/text/AtomicStringHash.h"
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namespace blink {
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class CounterDirectives {
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public:
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CounterDirectives()
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: m_isResetSet(false)
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, m_isIncrementSet(false)
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, m_resetValue(0)
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, m_incrementValue(0)
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{
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}
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// FIXME: The code duplication here could possibly be replaced by using two
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// maps, or by using a container that held two generic Directive objects.
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bool isReset() const { return m_isResetSet; }
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int resetValue() const { return m_resetValue; }
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void setResetValue(int value)
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{
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m_resetValue = value;
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m_isResetSet = true;
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}
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void clearReset()
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{
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m_resetValue = 0;
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m_isResetSet = false;
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}
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void inheritReset(CounterDirectives& parent)
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{
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m_resetValue = parent.m_resetValue;
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m_isResetSet = parent.m_isResetSet;
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}
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bool isIncrement() const { return m_isIncrementSet; }
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int incrementValue() const { return m_incrementValue; }
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void addIncrementValue(int value)
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{
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m_incrementValue = clampToInteger((double)m_incrementValue + value);
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m_isIncrementSet = true;
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}
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void clearIncrement()
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{
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m_incrementValue = 0;
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m_isIncrementSet = false;
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}
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void inheritIncrement(CounterDirectives& parent)
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{
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m_incrementValue = parent.m_incrementValue;
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m_isIncrementSet = parent.m_isIncrementSet;
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}
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bool isDefined() const { return isReset() || isIncrement(); }
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int combinedValue() const
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{
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ASSERT(m_isResetSet || !m_resetValue);
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ASSERT(m_isIncrementSet || !m_incrementValue);
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// FIXME: Shouldn't allow overflow here.
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return m_resetValue + m_incrementValue;
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}
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private:
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bool m_isResetSet;
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bool m_isIncrementSet;
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int m_resetValue;
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int m_incrementValue;
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};
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bool operator==(const CounterDirectives&, const CounterDirectives&);
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inline bool operator!=(const CounterDirectives& a, const CounterDirectives& b) { return !(a == b); }
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typedef HashMap<AtomicString, CounterDirectives> CounterDirectiveMap;
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PassOwnPtr<CounterDirectiveMap> clone(const CounterDirectiveMap&);
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} // namespace blink
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#endif // CounterDirectives_h
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