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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "namevaluesdialog.h"
#include "algorithm.h"
#include "hostosinfo.h"
#include "utilstr.h"
#include <QDialogButtonBox>
#include <QLabel>
#include <QPlainTextEdit>
#include <QPushButton>
#include <QSet>
#include <QTextBlock>
#include <QTimer>
#include <QVBoxLayout>
namespace Utils {
namespace Internal {
static EnvironmentItems cleanUp(const EnvironmentItems &items)
{
EnvironmentItems cleanedItems;
for (int i = items.count() - 1; i >= 0; i--) {
EnvironmentItem item = items.at(i);
if (HostOsInfo::isWindowsHost())
item.name = item.name.toUpper();
const QString &itemName = item.name;
QString emptyName = itemName;
emptyName.remove(QLatin1Char(' '));
if (!emptyName.isEmpty())
cleanedItems.prepend(item);
}
return cleanedItems;
}
class TextEditHelper : public QPlainTextEdit
{
Q_OBJECT
public:
using QPlainTextEdit::QPlainTextEdit;
signals:
void lostFocus();
private:
void focusOutEvent(QFocusEvent *e) override
{
QPlainTextEdit::focusOutEvent(e);
emit lostFocus();
}
};
} // namespace Internal
NameValueItemsWidget::NameValueItemsWidget(QWidget *parent)
: QWidget(parent)
{
const QString helpText = Tr::tr(
"Enter one environment variable per line.\n"
"To set or change a variable, use VARIABLE=VALUE.\n"
"To append to a variable, use VARIABLE+=VALUE.\n"
"To prepend to a variable, use VARIABLE=+VALUE.\n"
"Existing variables can be referenced in a VALUE with ${OTHER}.\n"
"To clear a variable, put its name on a line with nothing else on it.\n"
"To disable a variable, prefix the line with \"#\".");
m_editor = new Internal::TextEditHelper(this);
auto layout = new QVBoxLayout(this);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(m_editor);
layout->addWidget(new QLabel(helpText, this));
const auto checkForItemChange = [this] {
const EnvironmentItems newItems = environmentItems();
if (newItems != m_originalItems) {
m_originalItems = newItems;
emit userChangedItems(newItems);
}
};
const auto timer = new QTimer(this);
timer->setSingleShot(true);
timer->setInterval(1000);
connect(m_editor, &QPlainTextEdit::textChanged, timer, qOverload<>(&QTimer::start));
connect(timer, &QTimer::timeout, this, checkForItemChange);
connect(m_editor, &Internal::TextEditHelper::lostFocus, this, [timer, checkForItemChange] {
timer->stop();
checkForItemChange();
});
}
void NameValueItemsWidget::setEnvironmentItems(const EnvironmentItems &items)
{
m_originalItems = items;
m_editor->document()->setPlainText(EnvironmentItem::toStringList(items)
.join(QLatin1Char('\n')));
}
EnvironmentItems NameValueItemsWidget::environmentItems() const
{
const QStringList list = m_editor->document()->toPlainText().split(QLatin1String("\n"));
return Internal::cleanUp(EnvironmentItem::fromStringList(list));
}
void NameValueItemsWidget::setPlaceholderText(const QString &text)
{
m_editor->setPlaceholderText(text);
}
bool NameValueItemsWidget::editVariable(const QString &name, Selection selection)
{
QTextDocument * const doc = m_editor->document();
for (QTextBlock b = doc->lastBlock(); b.isValid(); b = b.previous()) {
const QString &line = b.text();
qsizetype offset = 0;
const auto skipWhiteSpace = [&] {
for (; offset < line.length(); ++offset) {
if (!line.at(offset).isSpace())
return;
}
};
skipWhiteSpace();
if (line.mid(offset, name.size()) != name)
continue;
offset += name.size();
const auto updateCursor = [&](int anchor, int pos) {
QTextCursor newCursor(doc);
newCursor.setPosition(anchor);
newCursor.setPosition(pos, QTextCursor::KeepAnchor);
m_editor->setTextCursor(newCursor);
};
if (selection == Selection::Name) {
m_editor->setFocus();
updateCursor(b.position() + offset, b.position());
return true;
}
skipWhiteSpace();
if (offset < line.length()) {
QChar nextChar = line.at(offset);
if (nextChar.isLetterOrNumber())
continue;
if (nextChar == '=') {
if (++offset < line.length() && line.at(offset) == '+')
++offset;
} else if (nextChar == '+') {
if (++offset < line.length() && line.at(offset) == '=')
++offset;
}
}
m_editor->setFocus();
updateCursor(b.position() + b.length() - 1, b.position() + offset);
return true;
}
return false;
}
NameValuesDialog::NameValuesDialog(const QString &windowTitle, QWidget *parent)
: QDialog(parent)
{
resize(640, 480);
m_editor = new NameValueItemsWidget(this);
auto box = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel,
Qt::Horizontal,
this);
box->button(QDialogButtonBox::Ok)->setText(Tr::tr("&OK"));
box->button(QDialogButtonBox::Cancel)->setText(Tr::tr("&Cancel"));
connect(box, &QDialogButtonBox::accepted, this, &QDialog::accept);
connect(box, &QDialogButtonBox::rejected, this, &QDialog::reject);
auto layout = new QVBoxLayout(this);
layout->addWidget(m_editor);
layout->addWidget(box);
setWindowTitle(windowTitle);
}
void NameValuesDialog::setNameValueItems(const EnvironmentItems &items)
{
m_editor->setEnvironmentItems(items);
}
EnvironmentItems NameValuesDialog::nameValueItems() const
{
return m_editor->environmentItems();
}
void NameValuesDialog::setPlaceholderText(const QString &text)
{
m_editor->setPlaceholderText(text);
}
std::optional<EnvironmentItems> NameValuesDialog::getNameValueItems(QWidget *parent,
const EnvironmentItems &initial,
const QString &placeholderText,
Polisher polisher,
const QString &windowTitle)
{
NameValuesDialog dialog(windowTitle, parent);
if (polisher)
polisher(&dialog);
dialog.setNameValueItems(initial);
dialog.setPlaceholderText(placeholderText);
bool result = dialog.exec() == QDialog::Accepted;
if (result)
return dialog.nameValueItems();
return {};
}
} // namespace Utils
#include <namevaluesdialog.moc>
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