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#include "line_editor.h"
#include <QKeyEvent>
LineEditor::LineEditor(QWidget *parent) : QLineEdit(parent), index(0)
{
setContextMenuPolicy(Qt::CustomContextMenu);
QAction *clearAction = new QAction("Clear &history", this);
clearAction->setStatusTip("Clears line edit history");
connect(clearAction, SIGNAL(triggered()), this, SLOT(clearHistory()));
contextMenu = createStandardContextMenu();
contextMenu->addSeparator();
contextMenu->addAction(clearAction);
connect(this, SIGNAL(returnPressed()), SLOT(textInserted()));
connect(this, SIGNAL(customContextMenuRequested(const QPoint)), this,
SLOT(showContextMenu(const QPoint)));
}
void LineEditor::keyPressEvent(QKeyEvent *ev)
{
if (ev->key() == Qt::Key_Up || ev->key() == Qt::Key_Down) {
if (lines.empty())
return;
if (ev->key() == Qt::Key_Up)
index--;
if (ev->key() == Qt::Key_Down)
index++;
if (index < 0)
index = 0;
if (index >= lines.size()) {
index = lines.size();
clear();
return;
}
setText(lines[index]);
} else if (ev->key() == Qt::Key_Escape) {
clear();
return;
}
QLineEdit::keyPressEvent(ev);
}
void LineEditor::textInserted()
{
if (lines.empty() || lines.back() != text())
lines += text();
if (lines.size() > 100)
lines.removeFirst();
index = lines.size();
clear();
Q_EMIT textLineInserted(lines.back());
}
void LineEditor::showContextMenu(const QPoint &pt)
{
contextMenu->exec(mapToGlobal(pt));
}
void LineEditor::clearHistory()
{
lines.clear();
index = 0;
clear();
}
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