filemanager/helper/pathhistory.cpp
2021-12-26 23:24:08 +08:00

78 lines
1.6 KiB
C++

/*
* Copyright (C) 2021 CutefishOS Team.
*
* Author: revenmartin <revenmartin@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "pathhistory.h"
#include <QUrl>
PathHistory::PathHistory(QObject *parent)
: QObject(parent)
{
}
void PathHistory::append(const QUrl &path)
{
m_prevHistory.append(path);
}
QUrl PathHistory::first()
{
return m_prevHistory.first();
}
QUrl PathHistory::last()
{
return m_prevHistory.last();
}
QUrl PathHistory::at(int i)
{
return m_prevHistory.at(i);
}
int PathHistory::count()
{
return m_prevHistory.count();
}
bool PathHistory::isEmpty()
{
return m_prevHistory.isEmpty();
}
QUrl PathHistory::posteriorPath()
{
if (m_postHistory.isEmpty())
return QUrl();
return m_postHistory.takeLast();
}
QUrl PathHistory::previousPath()
{
if (m_prevHistory.isEmpty())
return QUrl();
if (m_prevHistory.length() < 2)
return m_prevHistory.at(0);
m_postHistory.append(m_prevHistory.takeLast());
return m_prevHistory.takeLast();
}