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	diff --git a/src/view/tabwidget.cpp b/src/view/tabwidget.cpp
	index 28f0f038f..d4beab443 100644
	--- a/src/view/tabwidget.cpp
	+++ b/src/view/tabwidget.cpp
	@@ -1,1136 +1,1136 @@
	/* -- mode: c++; c-basic-offset:4 --
	view/tabwidget.cpp

	This file is part of Kleopatra, the KDE keymanager
	SPDX-FileCopyrightText: 2007 Klarälvdalens Datakonsult AB

	SPDX-License-Identifier: GPL-2.0-or-later
	*/

	#include <config-kleopatra.h>

	#include "tabwidget.h"

	#include "keytreeview.h"
	#include "kleopatra_debug.h"
	#include "searchbar.h"

	#include <settings.h>

	#include <utils/action_data.h>

	#include <Libkleo/KeyFilter>
	#include <Libkleo/KeyFilterManager>
	#include <Libkleo/KeyListModel>
	#include <Libkleo/KeyListSortFilterProxyModel>
	#include <Libkleo/Stl_Util>
	#include <Libkleo/UserIDProxyModel>

	#include <gpgme++/key.h>
	// needed for GPGME_VERSION_NUMBER
	#include <gpgme.h>

	#include <KActionCollection>
	#include <KConfig>
	#include <KConfigGroup>
	#include <KLocalizedString>
	#include <KSharedConfig>
	#include <QAction>
	#include <QInputDialog>
	#include <QTabWidget>

	#include <QAbstractProxyModel>
	#include <QHeaderView>
	#include <QMenu>
	#include <QRegularExpression>
	#include <QTimer>
	#include <QToolButton>
	#include <QTreeView>
	#include <QVBoxLayout>

	#include <map>

	using namespace Kleo;
	using namespace GpgME;

	namespace
	{

	class Page : public Kleo::KeyTreeView
	{
	Q_OBJECT
	Page(const Page &other);

	public:
	Page(const QString &title,
	const QString &id,
	const QString &text,
	AbstractKeyListSortFilterProxyModel *proxy = nullptr,
	const QString &toolTip = QString(),
	QWidget *parent = nullptr,
	const KConfigGroup &group = KConfigGroup());
	Page(const KConfigGroup &group, QWidget *parent = nullptr);
	~Page() override;

	void setTemporary(bool temporary);
	bool isTemporary() const
	{
	return m_isTemporary;
	}

	void setHierarchicalView(bool hierarchical) override;
	void setStringFilter(const QString &filter) override;
	void setKeyFilter(const std::shared_ptr<KeyFilter> &filter) override;

	QString title() const
	{
	return m_title.isEmpty() && keyFilter() ? keyFilter()->name() : m_title;
	}
	void setTitle(const QString &title);

	QString toolTip() const
	{
	return m_toolTip.isEmpty() ? title() : m_toolTip;
	}
	// not used void setToolTip(const QString &tip);

	bool canBeClosed() const
	{
	return m_canBeClosed;
	}
	bool canBeRenamed() const
	{
	return m_canBeRenamed;
	}
	bool canChangeStringFilter() const
	{
	return m_canChangeStringFilter;
	}
	bool canChangeKeyFilter() const
	{
	return m_canChangeKeyFilter && !m_isTemporary;
	}
	bool canChangeHierarchical() const
	{
	return m_canChangeHierarchical;
	}

	- void saveTo();
	+ void saveState();

	Page *clone() const override
	{
	return new Page(*this);
	}

	void liftAllRestrictions()
	{
	m_canBeClosed = m_canBeRenamed = m_canChangeStringFilter = m_canChangeKeyFilter = m_canChangeHierarchical = true;
	}

	void closePage()
	{
	m_configGroup.deleteGroup();
	m_configGroup.sync();
	}

	KConfigGroup configGroup() const
	{
	return m_configGroup;
	}

	Q_SIGNALS:
	void titleChanged(const QString &title);

	private:
	void init();

	private:
	QString m_title;
	QString m_toolTip;
	bool m_isTemporary : 1;
	bool m_canBeClosed : 1;
	bool m_canBeRenamed : 1;
	bool m_canChangeStringFilter : 1;
	bool m_canChangeKeyFilter : 1;
	bool m_canChangeHierarchical : 1;
	KConfigGroup m_configGroup;
	};
	} // anon namespace

	Page::Page(const Page &other)
	: KeyTreeView(other)
	, m_title(other.m_title)
	, m_toolTip(other.m_toolTip)
	, m_isTemporary(other.m_isTemporary)
	, m_canBeClosed(other.m_canBeClosed)
	, m_canBeRenamed(other.m_canBeRenamed)
	, m_canChangeStringFilter(other.m_canChangeStringFilter)
	, m_canChangeKeyFilter(other.m_canChangeKeyFilter)
	, m_canChangeHierarchical(other.m_canChangeHierarchical)
	, m_configGroup(other.configGroup().config()->group(QUuid::createUuid().toString()))
	{
	init();
	}

	Page::Page(const QString &title,
	const QString &id,
	const QString &text,
	AbstractKeyListSortFilterProxyModel *proxy,
	const QString &toolTip,
	QWidget *parent,
	const KConfigGroup &group)
	: KeyTreeView(text, KeyFilterManager::instance()->keyFilterByID(id), proxy, parent, group)
	, m_title(title)
	, m_toolTip(toolTip)
	, m_isTemporary(false)
	, m_canBeClosed(true)
	, m_canBeRenamed(true)
	, m_canChangeStringFilter(true)
	, m_canChangeKeyFilter(true)
	, m_canChangeHierarchical(true)
	, m_configGroup(group)
	{
	init();
	}

	static const char TITLE_ENTRY[] = "title";
	static const char STRING_FILTER_ENTRY[] = "string-filter";
	static const char KEY_FILTER_ENTRY[] = "key-filter";
	static const char HIERARCHICAL_VIEW_ENTRY[] = "hierarchical-view";
	static const char COLUMN_SIZES[] = "column-sizes";
	static const char SORT_COLUMN[] = "sort-column";
	static const char SORT_DESCENDING[] = "sort-descending";

	Page::Page(const KConfigGroup &group, QWidget *parent)
	: KeyTreeView(group.readEntry(STRING_FILTER_ENTRY), KeyFilterManager::instance()->keyFilterByID(group.readEntry(KEY_FILTER_ENTRY)), nullptr, parent, group)
	, m_title(group.readEntry(TITLE_ENTRY))
	, m_toolTip()
	, m_isTemporary(false)
	, m_canBeClosed(!group.isImmutable())
	, m_canBeRenamed(!group.isEntryImmutable(TITLE_ENTRY))
	, m_canChangeStringFilter(!group.isEntryImmutable(STRING_FILTER_ENTRY))
	, m_canChangeKeyFilter(!group.isEntryImmutable(KEY_FILTER_ENTRY))
	, m_canChangeHierarchical(!group.isEntryImmutable(HIERARCHICAL_VIEW_ENTRY))
	, m_configGroup(group)
	{
	init();
	setHierarchicalView(group.readEntry(HIERARCHICAL_VIEW_ENTRY, true));
	const QList<int> settings = group.readEntry(COLUMN_SIZES, QList<int>());
	std::vector<int> sizes;
	sizes.reserve(settings.size());
	std::copy(settings.cbegin(), settings.cend(), std::back_inserter(sizes));
	setColumnSizes(sizes);
	setSortColumn(group.readEntry(SORT_COLUMN, 0), group.readEntry(SORT_DESCENDING, true) ? Qt::DescendingOrder : Qt::AscendingOrder);
	}

	void Page::init()
	{
	#if GPGME_VERSION_NUMBER >= 0x011800 // 1.24.0
	view()->setDragDropMode(QAbstractItemView::DragOnly);
	view()->setDragEnabled(true);
	#endif
	}

	Page::~Page()
	{
	}

	-void Page::saveTo()
	+void Page::saveState()
	{
	m_configGroup.writeEntry(TITLE_ENTRY, m_title);
	m_configGroup.writeEntry(STRING_FILTER_ENTRY, stringFilter());
	m_configGroup.writeEntry(KEY_FILTER_ENTRY, keyFilter() ? keyFilter()->id() : QString());
	m_configGroup.writeEntry(HIERARCHICAL_VIEW_ENTRY, isHierarchicalView());
	}

	void Page::setStringFilter(const QString &filter)
	{
	if (!m_canChangeStringFilter) {
	return;
	}
	KeyTreeView::setStringFilter(filter);
	}

	void Page::setKeyFilter(const std::shared_ptr<KeyFilter> &filter)
	{
	if (!canChangeKeyFilter()) {
	return;
	}
	const QString oldTitle = title();
	KeyTreeView::setKeyFilter(filter);
	const QString newTitle = title();
	if (oldTitle != newTitle) {
	Q_EMIT titleChanged(newTitle);
	}
	}

	void Page::setTitle(const QString &t)
	{
	if (t == m_title) {
	return;
	}
	if (!m_canBeRenamed) {
	return;
	}
	const QString oldTitle = title();
	m_title = t;
	const QString newTitle = title();
	if (oldTitle != newTitle) {
	Q_EMIT titleChanged(newTitle);
	}
	}

	#if 0 // not used
	void Page::setToolTip(const QString &tip)
	{
	if (tip == m_toolTip) {
	return;
	}
	if (!m_canBeRenamed) {
	return;
	}
	const QString oldTip = toolTip();
	m_toolTip = tip;
	const QString newTip = toolTip();
	if (oldTip != newTip) {
	Q_EMIT titleChanged(title());
	}
	}
	#endif

	void Page::setHierarchicalView(bool on)
	{
	if (!m_canChangeHierarchical) {
	return;
	}
	KeyTreeView::setHierarchicalView(on);
	}

	void Page::setTemporary(bool on)
	{
	if (on == m_isTemporary) {
	return;
	}
	m_isTemporary = on;
	if (on) {
	setKeyFilter(std::shared_ptr<KeyFilter>());
	}
	}

	namespace
	{
	class Actions
	{
	public:
	constexpr static const char *Rename = "window_rename_tab";
	constexpr static const char *Duplicate = "window_duplicate_tab";
	constexpr static const char *Close = "window_close_tab";
	constexpr static const char *MoveLeft = "window_move_tab_left";
	constexpr static const char *MoveRight = "window_move_tab_right";
	constexpr static const char *Hierarchical = "window_view_hierarchical";
	constexpr static const char *ExpandAll = "window_expand_all";
	constexpr static const char *CollapseAll = "window_collapse_all";

	explicit Actions()
	{
	}

	void insert(const std::string &name, QAction *action)
	{
	actions.insert({name, action});
	}

	auto get(const std::string &name) const
	{
	const auto it = actions.find(name);
	return (it != actions.end()) ? it->second : nullptr;
	}

	void setChecked(const std::string &name, bool checked) const
	{
	if (auto action = get(name)) {
	action->setChecked(checked);
	}
	}

	void setEnabled(const std::string &name, bool enabled) const
	{
	if (auto action = get(name)) {
	action->setEnabled(enabled);
	}
	}

	void setVisible(const std::string &name, bool visible) const
	{
	if (auto action = get(name)) {
	action->setVisible(visible);
	}
	}

	private:
	std::map<std::string, QAction *> actions;
	};
	}

	//
	//
	// TabWidget
	//
	//

	class TabWidget::Private
	{
	friend class ::Kleo::TabWidget;
	TabWidget *const q;

	public:
	explicit Private(TabWidget *qq);
	~Private()
	{
	}

	private:
	void slotContextMenu(const QPoint &p);
	void currentIndexChanged(int index);
	void slotPageTitleChanged(const QString &title);
	void slotPageKeyFilterChanged(const std::shared_ptr<KeyFilter> &filter);
	void slotPageStringFilterChanged(const QString &filter);
	void slotPageHierarchyChanged(bool on);

	#ifndef QT_NO_INPUTDIALOG
	void slotRenameCurrentTab()
	{
	renamePage(currentPage());
	}
	#endif // QT_NO_INPUTDIALOG
	void slotNewTab();
	void slotDuplicateCurrentTab()
	{
	duplicatePage(currentPage());
	}
	void slotCloseCurrentTab()
	{
	closePage(currentPage());
	}
	void slotMoveCurrentTabLeft()
	{
	movePageLeft(currentPage());
	}
	void slotMoveCurrentTabRight()
	{
	movePageRight(currentPage());
	}
	void slotToggleHierarchicalView(bool on)
	{
	toggleHierarchicalView(currentPage(), on);
	}
	void slotExpandAll()
	{
	expandAll(currentPage());
	}
	void slotCollapseAll()
	{
	collapseAll(currentPage());
	}

	#ifndef QT_NO_INPUTDIALOG
	void renamePage(Page *page);
	#endif
	void duplicatePage(Page *page);
	void closePage(Page *page);
	void movePageLeft(Page *page);
	void movePageRight(Page *page);
	void toggleHierarchicalView(Page *page, bool on);
	void expandAll(Page *page);
	void collapseAll(Page *page);

	void enableDisableCurrentPageActions();
	void enableDisablePageActions(const Actions &actions, const Page *page);

	Page *currentPage() const
	{
	Q_ASSERT(!tabWidget->currentWidget() \|\| qobject_cast<Page *>(tabWidget->currentWidget()));
	return static_cast<Page *>(tabWidget->currentWidget());
	}
	Page *page(unsigned int idx) const
	{
	Q_ASSERT(!tabWidget->widget(idx) \|\| qobject_cast<Page *>(tabWidget->widget(idx)));
	return static_cast<Page *>(tabWidget->widget(idx));
	}

	Page *senderPage() const
	{
	QObject *const sender = q->sender();
	Q_ASSERT(!sender \|\| qobject_cast<Page *>(sender));
	return static_cast<Page *>(sender);
	}

	bool isSenderCurrentPage() const
	{
	Page *const sp = senderPage();
	return sp && sp == currentPage();
	}

	QTreeView addView(Page page, Page *columnReference);

	private:
	AbstractKeyListModel *flatModel = nullptr;
	AbstractKeyListModel *hierarchicalModel = nullptr;
	QToolButton *newTabButton = nullptr;
	QToolButton *closeTabButton = nullptr;
	QTabWidget *tabWidget = nullptr;
	QAction *newAction = nullptr;
	Actions currentPageActions;
	Actions otherPageActions;
	bool actionsCreated = false;
	KSharedConfig::Ptr config;
	QString configKey;
	};

	TabWidget::Private::Private(TabWidget *qq)
	: q{qq}
	{
	auto layout = new QVBoxLayout{q};
	layout->setContentsMargins(0, 0, 0, 0);

	// create "New Tab" button before tab widget to ensure correct tab order
	newTabButton = new QToolButton{q};

	tabWidget = new QTabWidget{q};
	KDAB_SET_OBJECT_NAME(tabWidget);

	layout->addWidget(tabWidget);

	tabWidget->setMovable(true);

	tabWidget->tabBar()->setContextMenuPolicy(Qt::CustomContextMenu);

	// create "Close Tab" button after tab widget to ensure correct tab order
	closeTabButton = new QToolButton{q};

	connect(tabWidget, &QTabWidget::currentChanged, q, [this](int index) {
	currentIndexChanged(index);
	});
	connect(tabWidget->tabBar(), &QWidget::customContextMenuRequested, q, [this](const QPoint &p) {
	slotContextMenu(p);
	});
	}

	void TabWidget::Private::slotContextMenu(const QPoint &p)
	{
	const int tabUnderPos = tabWidget->tabBar()->tabAt(p);
	Page const contextMenuPage = static_cast<Page >(tabWidget->widget(tabUnderPos));
	const Page *const current = currentPage();

	const auto actions = contextMenuPage == current ? currentPageActions : otherPageActions;

	enableDisablePageActions(actions, contextMenuPage);

	QMenu menu;
	if (auto action = actions.get(Actions::Rename)) {
	menu.addAction(action);
	}
	menu.addSeparator();
	menu.addAction(newAction);
	if (auto action = actions.get(Actions::Duplicate)) {
	menu.addAction(action);
	}
	menu.addSeparator();
	if (auto action = actions.get(Actions::MoveLeft)) {
	menu.addAction(action);
	}
	if (auto action = actions.get(Actions::MoveRight)) {
	menu.addAction(action);
	}
	menu.addSeparator();
	if (auto action = actions.get(Actions::Close)) {
	menu.addAction(action);
	}

	const QAction *const action = menu.exec(tabWidget->tabBar()->mapToGlobal(p));
	if (!action) {
	return;
	}

	if (contextMenuPage == current \|\| action == newAction) {
	return; // performed through signal/slot connections...
	}

	#ifndef QT_NO_INPUTDIALOG
	if (action == otherPageActions.get(Actions::Rename)) {
	renamePage(contextMenuPage);
	}
	#endif // QT_NO_INPUTDIALOG
	else if (action == otherPageActions.get(Actions::Duplicate)) {
	duplicatePage(contextMenuPage);
	} else if (action == otherPageActions.get(Actions::Close)) {
	closePage(contextMenuPage);
	} else if (action == otherPageActions.get(Actions::MoveLeft)) {
	movePageLeft(contextMenuPage);
	} else if (action == otherPageActions.get(Actions::MoveRight)) {
	movePageRight(contextMenuPage);
	}
	}

	void TabWidget::Private::currentIndexChanged(int index)
	{
	const Page *const page = this->page(index);
	Q_EMIT q->currentViewChanged(page ? page->view() : nullptr);
	Q_EMIT q->keyFilterChanged(page ? page->keyFilter() : std::shared_ptr<KeyFilter>());
	Q_EMIT q->stringFilterChanged(page ? page->stringFilter() : QString());
	enableDisableCurrentPageActions();
	}

	void TabWidget::Private::enableDisableCurrentPageActions()
	{
	const Page *const page = currentPage();

	Q_EMIT q->enableChangeStringFilter(page && page->canChangeStringFilter());
	Q_EMIT q->enableChangeKeyFilter(page && page->canChangeKeyFilter());

	enableDisablePageActions(currentPageActions, page);
	}

	void TabWidget::Private::enableDisablePageActions(const Actions &actions, const Page *p)
	{
	actions.setEnabled(Actions::Rename, p && p->canBeRenamed());
	actions.setEnabled(Actions::Duplicate, p);
	actions.setEnabled(Actions::Close, p && p->canBeClosed() && tabWidget->count() > 1);
	actions.setEnabled(Actions::MoveLeft, p && tabWidget->indexOf(const_cast<Page *>(p)) != 0);
	actions.setEnabled(Actions::MoveRight, p && tabWidget->indexOf(const_cast<Page *>(p)) != tabWidget->count() - 1);
	actions.setEnabled(Actions::Hierarchical, p && p->canChangeHierarchical());
	actions.setChecked(Actions::Hierarchical, p && p->isHierarchicalView());
	actions.setVisible(Actions::Hierarchical, Kleo::Settings{}.cmsEnabled());
	actions.setEnabled(Actions::ExpandAll, p && p->isHierarchicalView());
	actions.setEnabled(Actions::CollapseAll, p && p->isHierarchicalView());
	}

	void TabWidget::Private::slotPageTitleChanged(const QString &)
	{
	if (Page *const page = senderPage()) {
	const int idx = tabWidget->indexOf(page);
	tabWidget->setTabText(idx, page->title());
	tabWidget->setTabToolTip(idx, page->toolTip());
	}
	}

	void TabWidget::Private::slotPageKeyFilterChanged(const std::shared_ptr<KeyFilter> &kf)
	{
	if (isSenderCurrentPage()) {
	Q_EMIT q->keyFilterChanged(kf);
	}
	}

	void TabWidget::Private::slotPageStringFilterChanged(const QString &filter)
	{
	if (isSenderCurrentPage()) {
	Q_EMIT q->stringFilterChanged(filter);
	}
	}

	void TabWidget::Private::slotPageHierarchyChanged(bool)
	{
	enableDisableCurrentPageActions();
	}

	void TabWidget::Private::slotNewTab()
	{
	const auto group = KSharedConfig::openStateConfig()->group(QStringLiteral("View %1").arg(QUuid::createUuid().toString()));
	Page *page = new Page(QString(), QStringLiteral("all-certificates"), QString(), nullptr, QString(), nullptr, group);
	addView(page, currentPage());
	tabWidget->setCurrentIndex(tabWidget->count() - 1);
	}

	void TabWidget::Private::renamePage(Page *page)
	{
	if (!page) {
	return;
	}
	bool ok;
	const QString text = QInputDialog::getText(q, i18n("Rename Tab"), i18n("New tab title:"), QLineEdit::Normal, page->title(), &ok);
	if (!ok) {
	return;
	}
	page->setTitle(text);
	}

	void TabWidget::Private::duplicatePage(Page *page)
	{
	if (!page) {
	return;
	}
	Page *const clone = page->clone();
	Q_ASSERT(clone);
	clone->liftAllRestrictions();
	addView(clone, page);
	}

	void TabWidget::Private::closePage(Page *page)
	{
	if (!page \|\| !page->canBeClosed() \|\| tabWidget->count() <= 1) {
	return;
	}
	Q_EMIT q->viewAboutToBeRemoved(page->view());
	page->closePage();
	tabWidget->removeTab(tabWidget->indexOf(page));
	enableDisableCurrentPageActions();
	}

	void TabWidget::Private::movePageLeft(Page *page)
	{
	if (!page) {
	return;
	}
	const int idx = tabWidget->indexOf(page);
	if (idx <= 0) {
	return;
	}
	tabWidget->tabBar()->moveTab(idx, idx - 1);
	enableDisableCurrentPageActions();
	}

	void TabWidget::Private::movePageRight(Page *page)
	{
	if (!page) {
	return;
	}
	const int idx = tabWidget->indexOf(page);
	if (idx < 0 \|\| idx >= tabWidget->count() - 1) {
	return;
	}
	tabWidget->tabBar()->moveTab(idx, idx + 1);
	enableDisableCurrentPageActions();
	}

	void TabWidget::Private::toggleHierarchicalView(Page *page, bool on)
	{
	if (!page) {
	return;
	}
	page->setHierarchicalView(on);
	}

	void TabWidget::Private::expandAll(Page *page)
	{
	if (!page \|\| !page->view()) {
	return;
	}
	page->view()->expandAll();
	}

	void TabWidget::Private::collapseAll(Page *page)
	{
	if (!page \|\| !page->view()) {
	return;
	}
	page->view()->collapseAll();
	}

	TabWidget::TabWidget(QWidget *p, Qt::WindowFlags f)
	: QWidget(p, f)
	, d(new Private(this))
	{
	}

	TabWidget::~TabWidget()
	{
	saveViews();
	}

	void TabWidget::setFlatModel(AbstractKeyListModel *model)
	{
	if (model == d->flatModel) {
	return;
	}
	d->flatModel = model;
	for (unsigned int i = 0, end = count(); i != end; ++i)
	if (Page *const page = d->page(i)) {
	page->setFlatModel(model);
	}
	}

	AbstractKeyListModel *TabWidget::flatModel() const
	{
	return d->flatModel;
	}

	void TabWidget::setHierarchicalModel(AbstractKeyListModel *model)
	{
	if (model == d->hierarchicalModel) {
	return;
	}
	d->hierarchicalModel = model;
	for (unsigned int i = 0, end = count(); i != end; ++i)
	if (Page *const page = d->page(i)) {
	page->setHierarchicalModel(model);
	}
	}

	AbstractKeyListModel *TabWidget::hierarchicalModel() const
	{
	return d->hierarchicalModel;
	}

	QString TabWidget::stringFilter() const
	{
	return d->currentPage() ? d->currentPage()->stringFilter() : QString{};
	}

	void TabWidget::setStringFilter(const QString &filter)
	{
	if (Page *const page = d->currentPage()) {
	page->setStringFilter(filter);
	}
	}

	void TabWidget::setKeyFilter(const std::shared_ptr<KeyFilter> &filter)
	{
	if (!filter) {
	qCDebug(KLEOPATRA_LOG) << "TabWidget::setKeyFilter() trial to set filter=NULL";
	return;
	}

	if (Page *const page = d->currentPage()) {
	page->setKeyFilter(filter);
	}
	}

	std::vector<QAbstractItemView *> TabWidget::views() const
	{
	std::vector<QAbstractItemView *> result;
	const unsigned int N = count();
	result.reserve(N);
	for (unsigned int i = 0; i != N; ++i)
	if (const Page *const p = d->page(i)) {
	result.push_back(p->view());
	}
	return result;
	}

	QAbstractItemView *TabWidget::currentView() const
	{
	if (Page *const page = d->currentPage()) {
	return page->view();
	} else {
	return nullptr;
	}
	}

	KeyListModelInterface *TabWidget::currentModel() const
	{
	const QAbstractItemView *const view = currentView();
	if (!view) {
	return nullptr;
	}
	auto const proxy = qobject_cast<QAbstractProxyModel *>(view->model());
	if (!proxy) {
	return nullptr;
	}
	return dynamic_cast<KeyListModelInterface *>(proxy);
	}

	unsigned int TabWidget::count() const
	{
	return d->tabWidget->count();
	}

	void TabWidget::setMultiSelection(bool on)
	{
	for (unsigned int i = 0, end = count(); i != end; ++i)
	if (const Page *const p = d->page(i))
	if (QTreeView *const view = p->view()) {
	view->setSelectionMode(on ? QAbstractItemView::ExtendedSelection : QAbstractItemView::SingleSelection);
	}
	}

	void TabWidget::createActions(KActionCollection *coll)
	{
	if (!coll) {
	return;
	}
	const action_data actionDataNew = {
	"window_new_tab",
	i18n("New Tab"),
	i18n("Open a new tab"),
	"tab-new-background",
	this,
	[this](bool) {
	d->slotNewTab();
	},
	QStringLiteral("CTRL+SHIFT+N"),
	};

	d->newAction = make_action_from_data(actionDataNew, coll);

	const std::vector<action_data> actionData = {
	{
	Actions::Rename,
	i18n("Rename Tab..."),
	i18n("Rename this tab"),
	"edit-rename",
	this,
	[this](bool) {
	d->slotRenameCurrentTab();
	},
	QStringLiteral("CTRL+SHIFT+R"),
	RegularQAction,
	Disabled,
	},
	{
	Actions::Duplicate,
	i18n("Duplicate Tab"),
	i18n("Duplicate this tab"),
	"tab-duplicate",
	this,
	[this](bool) {
	d->slotDuplicateCurrentTab();
	},
	QStringLiteral("CTRL+SHIFT+D"),
	},
	{
	Actions::Close,
	i18n("Close Tab"),
	i18n("Close this tab"),
	"tab-close",
	this,
	[this](bool) {
	d->slotCloseCurrentTab();
	},
	QStringLiteral("CTRL+SHIFT+W"),
	RegularQAction,
	Disabled,
	}, // ### CTRL-W when available
	{
	Actions::MoveLeft,
	i18n("Move Tab Left"),
	i18n("Move this tab left"),
	nullptr,
	this,
	[this](bool) {
	d->slotMoveCurrentTabLeft();
	},
	QStringLiteral("CTRL+SHIFT+LEFT"),
	RegularQAction,
	Disabled,
	},
	{
	Actions::MoveRight,
	i18n("Move Tab Right"),
	i18n("Move this tab right"),
	nullptr,
	this,
	[this](bool) {
	d->slotMoveCurrentTabRight();
	},
	QStringLiteral("CTRL+SHIFT+RIGHT"),
	RegularQAction,
	Disabled,
	},
	{
	Actions::Hierarchical,
	i18n("Hierarchical Certificate List"),
	QString(),
	nullptr,
	this,
	[this](bool on) {
	d->slotToggleHierarchicalView(on);
	},
	QString(),
	KFToggleAction,
	Disabled,
	},
	{
	Actions::ExpandAll,
	i18n("Expand All"),
	QString(),
	nullptr,
	this,
	[this](bool) {
	d->slotExpandAll();
	},
	QStringLiteral("CTRL+."),
	RegularQAction,
	Disabled,
	},
	{
	Actions::CollapseAll,
	i18n("Collapse All"),
	QString(),
	nullptr,
	this,
	[this](bool) {
	d->slotCollapseAll();
	},
	QStringLiteral("CTRL+,"),
	RegularQAction,
	Disabled,
	},
	};

	for (const auto &ad : actionData) {
	d->currentPageActions.insert(ad.name, make_action_from_data(ad, coll));
	}

	for (const auto &ad : actionData) {
	// create actions for the context menu of the currently not active tabs,
	// but do not add those actions to the action collection
	auto action = new QAction(ad.text, coll);
	if (ad.icon) {
	action->setIcon(QIcon::fromTheme(QLatin1StringView(ad.icon)));
	}
	action->setEnabled(ad.actionState == Enabled);
	d->otherPageActions.insert(ad.name, action);
	}

	d->newTabButton->setDefaultAction(d->newAction);
	d->tabWidget->setCornerWidget(d->newTabButton, Qt::TopLeftCorner);
	if (auto action = d->currentPageActions.get(Actions::Close)) {
	d->closeTabButton->setDefaultAction(action);
	d->tabWidget->setCornerWidget(d->closeTabButton, Qt::TopRightCorner);
	} else {
	d->closeTabButton->setVisible(false);
	}
	d->actionsCreated = true;
	}

	QAbstractItemView *TabWidget::addView(const QString &title, const QString &id, const QString &text)
	{
	const KConfigGroup group = KSharedConfig::openStateConfig()->group(QStringLiteral("View %1").arg(QUuid::createUuid().toString()));
	Page *page = new Page(title, id, text, nullptr, QString(), nullptr, group);
	return d->addView(page, d->currentPage());
	}

	QAbstractItemView *TabWidget::addView(const KConfigGroup &group, Options options)
	{
	if (options & ShowUserIDs) {
	return d->addView(new Page(group.readEntry(TITLE_ENTRY),
	group.readEntry(KEY_FILTER_ENTRY),
	group.readEntry(STRING_FILTER_ENTRY),
	new UserIDProxyModel(this),
	{},
	nullptr,
	group),
	nullptr);
	} else {
	return d->addView(new Page(group), nullptr);
	}
	}

	QAbstractItemView TabWidget::addTemporaryView(const QString &title, AbstractKeyListSortFilterProxyModel proxy, const QString &tabToolTip)
	{
	const KConfigGroup group = KSharedConfig::openConfig()->group(QStringLiteral("KeyTreeView_default"));
	Page *const page = new Page(title, QString(), QString(), proxy, tabToolTip, nullptr, group);
	page->setTemporary(true);
	QAbstractItemView *v = d->addView(page, d->currentPage());
	d->tabWidget->setCurrentIndex(d->tabWidget->count() - 1);
	return v;
	}

	QTreeView TabWidget::Private::addView(Page page, Page *columnReference)
	{
	if (!page) {
	return nullptr;
	}

	if (!actionsCreated) {
	auto coll = new KActionCollection(q);
	q->createActions(coll);
	}

	page->setFlatModel(flatModel);
	page->setHierarchicalModel(hierarchicalModel);

	connect(page, &Page::titleChanged, q, [this](const QString &text) {
	slotPageTitleChanged(text);
	});
	connect(page, &Page::keyFilterChanged, q, [this](const std::shared_ptr<Kleo::KeyFilter> &filter) {
	slotPageKeyFilterChanged(filter);
	});
	connect(page, &Page::stringFilterChanged, q, [this](const QString &text) {
	slotPageStringFilterChanged(text);
	});
	connect(page, &Page::hierarchicalChanged, q, [this](bool on) {
	slotPageHierarchyChanged(on);
	});

	if (columnReference) {
	QMetaObject::invokeMethod(
	q,
	[=]() {
	page->setColumnSizes(columnReference->columnSizes());
	page->setSortColumn(columnReference->sortColumn(), columnReference->sortOrder());
	},
	Qt::QueuedConnection);
	for (auto i = 0; i < columnReference->view()->model()->columnCount(); i++) {
	page->view()->setColumnHidden(i, columnReference->view()->isColumnHidden(i));
	page->view()->header()->moveSection(page->view()->header()->visualIndex(i), columnReference->view()->header()->visualIndex(i));
	}
	for (auto row = 0; row < page->view()->model()->rowCount(); row++) {
	page->view()->setExpanded(page->view()->model()->index(row, 0),
	columnReference->view()->isExpanded(columnReference->view()->model()->index(row, 0)));
	}
	}

	QAbstractItemView *const previous = q->currentView();
	const int tabIndex = tabWidget->addTab(page, page->title());
	setTabOrder(closeTabButton, page->view());
	tabWidget->setTabToolTip(tabIndex, page->toolTip());
	// work around a bug in QTabWidget (tested with 4.3.2) not emitting currentChanged() when the first widget is inserted
	QAbstractItemView *const current = q->currentView();
	if (previous != current) {
	currentIndexChanged(tabWidget->currentIndex());
	}
	enableDisableCurrentPageActions();
	QTreeView *view = page->view();
	Q_EMIT q->viewAdded(view);
	return view;
	}

	static QStringList extractViewGroups(const KConfigGroup &config)
	{
	return config.readEntry("Tabs", QStringList());
	}

	void TabWidget::loadViews(const KSharedConfig::Ptr &config, const QString &key, Options options)
	{
	d->config = config;
	d->configKey = key;
	QStringList groupList = extractViewGroups(config->group(key));
	for (const QString &view : std::as_const(groupList)) {
	addView(KConfigGroup(config, view), options);
	}
	if (!count()) {
	// add default view:
	addView({}, QStringLiteral("all-certificates"));
	}
	}

	void TabWidget::saveViews()
	{
	QStringList tabs;
	for (unsigned int i = 0, end = count(); i != end; ++i) {
	if (Page *const p = d->page(i)) {
	if (p->isTemporary()) {
	continue;
	}
	tabs += p->configGroup().name();
	- p->saveTo();
	+ p->saveState();
	}
	}
	d->config->group(d->configKey).writeEntry("Tabs", tabs);
	}

	void TabWidget::connectSearchBar(SearchBar *sb)
	{
	connect(sb, &SearchBar::stringFilterChanged, this, &TabWidget::setStringFilter);
	connect(this, &TabWidget::stringFilterChanged, sb, &SearchBar::setStringFilter);

	connect(sb, &SearchBar::keyFilterChanged, this, &TabWidget::setKeyFilter);
	connect(this, &TabWidget::keyFilterChanged, sb, &SearchBar::setKeyFilter);

	connect(this, &TabWidget::enableChangeStringFilter, sb, &SearchBar::setChangeStringFilterEnabled);
	connect(this, &TabWidget::enableChangeKeyFilter, sb, &SearchBar::setChangeKeyFilterEnabled);
	}

	#include "moc_tabwidget.cpp"
	#include "tabwidget.moc"

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