memorylineedit.cpp
1 //------------------------------------------------------------------------------
2 // memorylineedit.cpp
3 //------------------------------------------------------------------------------
4 //
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License
7 // as published by the Free Software Foundation; either version 2
8 // of the License, or (at your option) any later version.
9 //
10 // This program is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 // 02110-1301, USA.
19 //
20 //------------------------------------------------------------------------------
21 // Copyright (C) 2009 "Blzut3" <admin@maniacsvault.net>
22 //------------------------------------------------------------------------------
23 #include "memorylineedit.h"
24 
25 #include <QKeyEvent>
26 
27 MemoryLineEdit::MemoryLineEdit(QWidget *parent) : QLineEdit(parent)
28 {
29  connect(this, SIGNAL(returnPressed()), this, SLOT(storeCommand()));
30 }
31 
32 void MemoryLineEdit::keyPressEvent(QKeyEvent *event)
33 {
34  if(history.count() != 0)
35  {
36  if(event->key() == Qt::Key_Up)
37  {
38  if(position != history.begin())
39  position--;
40  setText(*position);
41  }
42  else if(event->key() == Qt::Key_Down && position != history.end())
43  {
44  position++;
45  if(position != history.end())
46  setText(*position);
47  else
48  setText("");
49  }
50  }
51  QLineEdit::keyPressEvent(event);
52 }
53 
54 void MemoryLineEdit::storeCommand()
55 {
56  history.append(text());
57  if(history.count() > 50)
58  history.removeFirst();
59  position = history.end();
60 }