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113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
/*
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* Copyright 2009 Matteo Agostinelli <agostinelli@gmail.com>
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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 Library General Public License as
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* published by the Free Software Foundation; either version 2 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 Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "qalculate_history.h"
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#include <QDebug>
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QalculateHistory::QalculateHistory(QObject* parent): QObject(parent)
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{
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m_currentItem = 0;
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}
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void QalculateHistory::addItem(const QString& expression)
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{
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m_history.push_back(expression);
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m_backup = "";
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m_currentItem = m_history.size() - 1;
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if (m_history.size() > 10) {
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m_history.removeFirst();
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}
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}
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QString QalculateHistory::currentItem()
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{
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qDebug() << "Current item: " << m_currentItem;
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qDebug() << "History size: " << m_history.size();
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if (m_history.isEmpty()) {
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return QString();
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}
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if (m_currentItem >= m_history.size()) {
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if (!backup().isEmpty()) {
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m_currentItem = m_history.size();
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return m_backup;
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} else {
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m_currentItem = m_history.size() - 1;
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}
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}
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if (m_currentItem < 0) {
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m_currentItem = 0;
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}
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qDebug() << "Final current item: " << m_currentItem;
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qDebug() << "---";
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return m_history.at(m_currentItem);
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}
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QString QalculateHistory::nextItem()
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{
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m_currentItem++;
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return currentItem();
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}
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QString QalculateHistory::previousItem()
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{
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m_currentItem--;
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return currentItem();
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}
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void QalculateHistory::setBackup(const QString& backup)
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{
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if (m_history.isEmpty()) {
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return;
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}
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if (backup != m_history.last()) {
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m_backup = backup;
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m_currentItem++;
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} else {
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m_backup = "";
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}
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}
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QString QalculateHistory::backup() const
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{
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return m_backup;
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}
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bool QalculateHistory::isAtEnd() const
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{
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return m_currentItem >= 0 && m_history.size() - 1;
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}
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QStringList QalculateHistory::historyItems() const
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{
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return m_history;
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}
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void QalculateHistory::setHistoryItems ( QStringList items )
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{
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m_history = items;
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}
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