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treewidget.cpp
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treewidget.cpp
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/*
ui/treewidget.cpp
This file is part of libkleopatra
SPDX-FileCopyrightText: 2022 g10 Code GmbH
SPDX-FileContributor: Ingo Klöcker <dev@ingo-kloecker.de>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config-libkleo.h>
#include "treewidget.h"
#include <KLocalizedString>
#include <QContextMenuEvent>
#include <QHeaderView>
#include <QMenu>
using namespace Kleo;
class TreeWidget::Private
{
public:
QMenu *mHeaderPopup = nullptr;
QList<QAction *> mColumnActions;
};
TreeWidget::TreeWidget(QWidget *parent)
: QTreeWidget::QTreeWidget(parent)
, d{new Private}
{
header()->installEventFilter(this);
}
TreeWidget::~TreeWidget() = default;
bool TreeWidget::eventFilter(QObject *watched, QEvent *event)
{
Q_UNUSED(watched)
if (event->type() == QEvent::ContextMenu) {
auto e = static_cast<QContextMenuEvent *>(event);
if (!d->mHeaderPopup) {
d->mHeaderPopup = new QMenu(this);
d->mHeaderPopup->setTitle(i18nc("@title:menu", "View Columns"));
for (int i = 0; i < model()->columnCount(); ++i) {
QAction *tmp = d->mHeaderPopup->addAction(model()->headerData(i, Qt::Horizontal).toString());
tmp->setData(QVariant(i));
tmp->setCheckable(true);
d->mColumnActions << tmp;
}
connect(d->mHeaderPopup, &QMenu::triggered, this, [this](QAction *action) {
const int col = action->data().toInt();
if (action->isChecked()) {
showColumn(col);
} else {
hideColumn(col);
}
if (action->isChecked()) {
Q_EMIT columnEnabled(col);
} else {
Q_EMIT columnDisabled(col);
}
});
}
for (QAction *action : std::as_const(d->mColumnActions)) {
const int column = action->data().toInt();
action->setChecked(!isColumnHidden(column));
}
d->mHeaderPopup->popup(mapToGlobal(e->pos()));
return true;
}
return false;
}
QModelIndex TreeWidget::moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers)
{
// make column by column keyboard navigation with Left/Right possible by switching
// the selection behavior to SelectItems before calling the parent class's moveCursor,
// because it ignores MoveLeft/MoveRight if the selection behavior is SelectRows;
// moreover, temporarily disable exanding of items to prevent expanding/collapsing
// on MoveLeft/MoveRight
if ((cursorAction != MoveLeft) && (cursorAction != MoveRight)) {
return QTreeWidget::moveCursor(cursorAction, modifiers);
}
const auto savedSelectionBehavior = selectionBehavior();
setSelectionBehavior(SelectItems);
const auto savedItemsExpandable = itemsExpandable();
setItemsExpandable(false);
const auto result = QTreeWidget::moveCursor(cursorAction, modifiers);
setItemsExpandable(savedItemsExpandable);
setSelectionBehavior(savedSelectionBehavior);
return result;
}
#include "moc_treewidget.cpp"

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