memorylineedit.cpp

//------------------------------------------------------------------------------
// memorylineedit.cpp
//------------------------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2009 Braden "Blzut3" Obrzut <admin@maniacsvault.net>
//------------------------------------------------------------------------------
#include "memorylineedit.h"

#include <QKeyEvent>

MemoryLineEdit::MemoryLineEdit(QWidget *parent) : QLineEdit(parent)
{
        connect(this, SIGNAL(returnPressed()), this, SLOT(storeCommand()));
}

void MemoryLineEdit::keyPressEvent(QKeyEvent *event)
{
        if (history.count() != 0)
        {
                if (event->key() == Qt::Key_Up)
                {
                        if (position != history.begin())
                                position--;
                        setText(*position);
                }
                else if (event->key() == Qt::Key_Down && position != history.end())
                {
                        position++;
                        if (position != history.end())
                                setText(*position);
                        else
                                setText("");
                }
        }
        QLineEdit::keyPressEvent(event);
}

void MemoryLineEdit::storeCommand()
{
        history.append(text());
        if (history.count() > 50)
                history.removeFirst();
        position = history.end();
}