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