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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Miodrag Milanovic <miodrag@symbioticeda.com>
* Copyright (C) 2018 Alex Tsui
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "line_editor.h"
#include <QKeyEvent>
#include <QToolTip>
#include "ColumnFormatter.h"
#include "Utils.h"
#include "pyinterpreter.h"
NEXTPNR_NAMESPACE_BEGIN
LineEditor::LineEditor(ParseHelper *helper, QWidget *parent) : QLineEdit(parent), index(0), parseHelper(helper)
{
setContextMenuPolicy(Qt::CustomContextMenu);
QAction *clearAction = new QAction("Clear &history", this);
clearAction->setStatusTip("Clears line edit history");
connect(clearAction, &QAction::triggered, this, &LineEditor::clearHistory);
contextMenu = createStandardContextMenu();
contextMenu->addSeparator();
contextMenu->addAction(clearAction);
connect(this, &LineEditor::returnPressed, this, &LineEditor::textInserted);
connect(this, &LineEditor::customContextMenuRequested, this, &LineEditor::showContextMenu);
}
void LineEditor::keyPressEvent(QKeyEvent *ev)
{
if (ev->key() == Qt::Key_Up || ev->key() == Qt::Key_Down) {
QToolTip::hideText();
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) {
QToolTip::hideText();
clear();
return;
} else if (ev->key() == Qt::Key_Tab) {
autocomplete();
return;
}
QToolTip::hideText();
QLineEdit::keyPressEvent(ev);
}
// This makes TAB work
bool LineEditor::focusNextPrevChild(bool next) { return false; }
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();
}
void LineEditor::autocomplete()
{
QString line = text();
const std::list<std::string> &suggestions = pyinterpreter_suggest(line.toStdString());
if (suggestions.size() == 1) {
line = suggestions.back().c_str();
} else {
// try to complete to longest common prefix
std::string prefix = LongestCommonPrefix(suggestions.begin(), suggestions.end());
if (prefix.size() > (size_t)line.size()) {
line = prefix.c_str();
} else {
ColumnFormatter fmt;
fmt.setItems(suggestions.begin(), suggestions.end());
fmt.format(width() / 5);
QString out = "";
for (auto &it : fmt.formattedOutput()) {
if (!out.isEmpty())
out += "\n";
out += it.c_str();
}
QToolTip::setFont(font());
if (!out.trimmed().isEmpty())
QToolTip::showText(mapToGlobal(QPoint(0, 0)), out);
}
}
// set up the next line on the console
setText(line);
}
NEXTPNR_NAMESPACE_END
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