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104 lines
2.7 KiB
104 lines
2.7 KiB
/*
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* valuemanager.cpp - part of abakus
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* Copyright (C) 2004, 2005 Michael Pyne <michael.pyne@kdemail.net>
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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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <kdebug.h>
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#include <tdelocale.h>
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#include <tqregexp.h>
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#include "numerictypes.h"
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#include "valuemanager.h"
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ValueManager *ValueManager::m_manager = 0;
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ValueManager *ValueManager::instance()
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{
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if(!m_manager)
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m_manager = new ValueManager;
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return m_manager;
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}
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ValueManager::ValueManager(TQObject *parent, const char *name) :
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TQObject(parent, name)
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{
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m_values.insert("pi", Abakus::number_t::PI);
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m_values.insert("e", Abakus::number_t::E);
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}
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Abakus::number_t ValueManager::value(const TQString &name) const
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{
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return m_values[name];
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}
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bool ValueManager::isValueSet(const TQString &name) const
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{
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return m_values.contains(name);
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}
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bool ValueManager::isValueReadOnly(const TQString &name) const
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{
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TQRegExp readOnlyValues("^(ans|pi|e|stackCount)$");
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return name.find(readOnlyValues) != -1;
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}
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void ValueManager::setValue(const TQString &name, const Abakus::number_t value)
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{
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if(m_values.contains(name) && this->value(name) != value)
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emit signalValueChanged(name, value);
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else if(!m_values.contains(name))
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emit signalValueAdded(name, value);
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m_values.replace(name, value);
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}
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void ValueManager::removeValue(const TQString &name)
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{
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if(m_values.contains(name))
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emit signalValueRemoved(name);
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m_values.remove(name);
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}
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void ValueManager::slotRemoveUserVariables()
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{
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TQStringList vars = valueNames();
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for(TQStringList::ConstIterator var = vars.constBegin(); var != vars.constEnd(); ++var)
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if(!isValueReadOnly(*var))
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removeValue(*var);
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}
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TQStringList ValueManager::valueNames() const
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{
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return m_values.keys();
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}
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TQString ValueManager::description(const TQString &valueName)
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{
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if(valueName == "e")
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return i18n("Natural exponential base - 2.7182818");
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if(valueName == "pi")
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return i18n("pi (π) - 3.1415926");
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return TQString();
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}
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#include "valuemanager.moc"
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