tabwidget.cpp
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	/* -- mode: c++; c-basic-offset:4 --
	view/tabwidget.cpp

	This file is part of Kleopatra, the KDE keymanager
	Copyright (c) 2007 Klarälvdalens Datakonsult AB

	Kleopatra is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	Kleopatra is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

	In addition, as a special exception, the copyright holders give
	permission to link the code of this program with any edition of
	the Qt library by Trolltech AS, Norway (or with modified versions
	of Qt that use the same license as Qt), and distribute linked
	combinations including the two. You must obey the GNU General
	Public License in all respects for all of the code used other than
	Qt. If you modify this file, you may extend this exception to
	your version of the file, but you are not obligated to do so. If
	you do not wish to do so, delete this exception statement from
	your version.
	*/

	#include <config-kleopatra.h>

	#include "tabwidget.h"
	#include "keytreeview.h"
	#include "kleopatra_debug.h"

	#include <utils/action_data.h>

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

	#include <gpgme++/key.h>

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

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

	#include <map>
	#include <vector>

	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();

	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(KConfigGroup &group) const;

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

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

	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;
	};
	} // 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)
	{
	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)
	{
	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))
	{
	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()
	{

	}

	Page::~Page() {}

	void Page::saveTo(KConfigGroup &group) const
	{

	group.writeEntry(TITLE_ENTRY, m_title);
	group.writeEntry(STRING_FILTER_ENTRY, stringFilter());
	group.writeEntry(KEY_FILTER_ENTRY, keyFilter() ? keyFilter()->id() : QString());
	group.writeEntry(HIERARCHICAL_VIEW_ENTRY, isHierarchicalView());
	QList<int> settings;
	const auto sizes = columnSizes();
	settings.reserve(sizes.size());
	std::copy(sizes.cbegin(), sizes.cend(), std::back_inserter(settings));
	group.writeEntry(COLUMN_SIZES, settings);
	group.writeEntry(SORT_COLUMN, sortColumn());
	group.writeEntry(SORT_DESCENDING, sortOrder() == Qt::DescendingOrder);
	}

	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>());
	}
	}

	//
	//
	// 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(QAction 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);
	void setCornerAction(QAction *action, Qt::Corner corner);

	private:
	AbstractKeyListModel *flatModel;
	AbstractKeyListModel *hierarchicalModel;
	QTabWidget tabWidget;
	QVBoxLayout layout;
	enum {
	Rename,
	Duplicate,
	Close,
	MoveLeft,
	MoveRight,
	Hierarchical,
	ExpandAll,
	CollapseAll,

	NumPageActions
	};
	QAction *newAction;
	QAction *currentPageActions[NumPageActions];
	QAction *otherPageActions[NumPageActions];
	bool actionsCreated;
	};

	TabWidget::Private::Private(TabWidget *qq)
	: q(qq),
	flatModel(nullptr),
	hierarchicalModel(nullptr),
	tabWidget(q),
	layout(q),
	actionsCreated(false)
	{
	KDAB_SET_OBJECT_NAME(tabWidget);
	KDAB_SET_OBJECT_NAME(layout);

	layout.setContentsMargins(0, 0, 0, 0);
	layout.addWidget(&tabWidget);

	tabWidget.tabBar()->hide();
	tabWidget.setMovable(true);

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

	connect(&tabWidget, SIGNAL(currentChanged(int)), q, SLOT(currentIndexChanged(int)));
	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();

	QAction **const actions = contextMenuPage == current ? currentPageActions : otherPageActions;

	enableDisablePageActions(actions, contextMenuPage);

	QMenu menu;
	menu.addAction(actions[Rename]);
	menu.addSeparator();
	menu.addAction(newAction);
	menu.addAction(actions[Duplicate]);
	menu.addSeparator();
	menu.addAction(actions[MoveLeft]);
	menu.addAction(actions[MoveRight]);
	menu.addSeparator();
	menu.addAction(actions[Close]);

	const QAction *const action = menu.exec(tabWidget.tabBar()->mapToGlobal(p));

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

	#ifndef QT_NO_INPUTDIALOG
	if (action == otherPageActions[Rename]) {
	renamePage(contextMenuPage);
	}
	#endif // QT_NO_INPUTDIALOG
	else if (action == otherPageActions[Duplicate]) {
	duplicatePage(contextMenuPage);
	} else if (action == otherPageActions[Close]) {
	closePage(contextMenuPage);
	} else if (action == otherPageActions[MoveLeft]) {
	movePageLeft(contextMenuPage);
	} else if (action == otherPageActions[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(QAction actions[], const Page p)
	{
	actions[Rename] ->setEnabled(p && p->canBeRenamed());
	actions[Duplicate] ->setEnabled(p);
	actions[Close] ->setEnabled(p && p->canBeClosed() && tabWidget.count() > 1);
	actions[MoveLeft] ->setEnabled(p && tabWidget.indexOf(const_cast<Page *>(p)) != 0);
	actions[MoveRight] ->setEnabled(p && tabWidget.indexOf(const_cast<Page *>(p)) != tabWidget.count() - 1);
	actions[Hierarchical]->setEnabled(p && p->canChangeHierarchical());
	actions[Hierarchical]->setChecked(p && p->isHierarchicalView());
	actions[ExpandAll] ->setEnabled(p && p->isHierarchicalView());
	actions[CollapseAll] ->setEnabled(p && p->isHierarchicalView());

	if (tabWidget.count() < 2) {
	tabWidget.tabBar()->hide();
	} else {
	tabWidget.tabBar()->show();
	}
	}

	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 KConfigGroup group = KSharedConfig::openConfig()->group(QString::asprintf("View #%u", tabWidget.count()));
	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());
	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(KSharedConfig::openConfig().data());
	}

	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;
	}

	void TabWidget::Private::setCornerAction(QAction *action, Qt::Corner corner)
	{
	if (!action) {
	return;
	}
	QToolButton *b = new QToolButton;
	b->setDefaultAction(action);
	tabWidget.setCornerWidget(b, corner);
	}

	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;
	}
	QAbstractProxyModel 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, SLOT(slotNewTab()), QStringLiteral("CTRL+SHIFT+N"), false, true
	};

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

	struct action_data actionData[] = {
	{
	"window_rename_tab", i18n("Rename Tab..."), i18n("Rename this tab"),
	"edit-rename", this, SLOT(slotRenameCurrentTab()), QStringLiteral("CTRL+SHIFT+R"), false, false
	},
	{
	"window_duplicate_tab", i18n("Duplicate Tab"), i18n("Duplicate this tab"),
	"tab-duplicate", this, SLOT(slotDuplicateCurrentTab()), QStringLiteral("CTRL+SHIFT+D"), false, true
	},
	{
	"window_close_tab", i18n("Close Tab"), i18n("Close this tab"),
	"tab-close", this, SLOT(slotCloseCurrentTab()), QStringLiteral("CTRL+SHIFT+W"), false, false
	}, // ### CTRL-W when available
	{
	"window_move_tab_left", i18n("Move Tab Left"), i18n("Move this tab left"),
	nullptr, this, SLOT(slotMoveCurrentTabLeft()), QStringLiteral("CTRL+SHIFT+LEFT"), false, false
	},
	{
	"window_move_tab_right", i18n("Move Tab Right"), i18n("Move this tab right"),
	nullptr, this, SLOT(slotMoveCurrentTabRight()), QStringLiteral("CTRL+SHIFT+RIGHT"), false, false
	},
	{
	"window_view_hierarchical", i18n("Hierarchical Certificate List"), QString(),
	nullptr, this, SLOT(slotToggleHierarchicalView(bool)), QString(), true, false
	},
	{
	"window_expand_all", i18n("Expand All"), QString(),
	nullptr, this, SLOT(slotExpandAll()), QStringLiteral("CTRL+."), false, false
	},
	{
	"window_collapse_all", i18n("Collapse All"), QString(),
	nullptr, this, SLOT(slotCollapseAll()), QStringLiteral("CTRL+,"), false, false
	},
	};

	for (int i = 0; i < d->NumPageActions; ++i) {
	d->currentPageActions[i] = make_action_from_data(actionData[i], coll);
	}

	for (int i = 0; i < d->NumPageActions; ++i) {
	action_data ad = actionData[i];
	Q_ASSERT(QString::fromLatin1(ad.name).startsWith(QLatin1String("window_")));
	ad.name = ad.name + strlen("window_");
	ad.tooltip.clear();
	ad.receiver = nullptr;
	ad.shortcut.clear();
	d->otherPageActions[i] = make_action_from_data(ad, coll);
	}

	d->setCornerAction(d->newAction, Qt::TopLeftCorner);
	d->setCornerAction(d->currentPageActions[d->Close], Qt::TopRightCorner);
	d->actionsCreated = true;
	}

	QAbstractItemView *TabWidget::addView(const QString &title, const QString &id, const QString &text)
	{
	const KConfigGroup group = KSharedConfig::openConfig()->group(QString::asprintf("View #%u", d->tabWidget.count()));
	Page *page = new Page(title, id, text, nullptr, QString(), nullptr, group);
	return d->addView(page, d->currentPage());
	}

	QAbstractItemView *TabWidget::addView(const KConfigGroup &group)
	{
	return d->addView(new Page(group), nullptr);
	}

	QAbstractItemView TabWidget::addTemporaryView(const QString &title, AbstractKeyListSortFilterProxyModel proxy, const QString &tabToolTip)
	{
	Page *const page = new Page(title, QString(), QString(), proxy, tabToolTip);
	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) {
	KActionCollection *coll = new KActionCollection(q);
	q->createActions(coll);
	}

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

	connect(page, SIGNAL(titleChanged(QString)), q, SLOT(slotPageTitleChanged(QString)));
	connect(page, SIGNAL(keyFilterChanged(std::shared_ptr<Kleo::KeyFilter>)), q, SLOT(slotPageKeyFilterChanged(std::shared_ptr<Kleo::KeyFilter>)));
	connect(page, SIGNAL(stringFilterChanged(QString)), q, SLOT(slotPageStringFilterChanged(QString)));
	connect(page, SIGNAL(hierarchicalChanged(bool)), q, SLOT(slotPageHierarchyChanged(bool)));

	if (columnReference) {
	page->setColumnSizes(columnReference->columnSizes());
	page->setSortColumn(columnReference->sortColumn(), columnReference->sortOrder());
	}

	QAbstractItemView *const previous = q->currentView();
	const int tabIndex = tabWidget.addTab(page, page->title());
	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 KConfig *config)
	{
	return config ? config->groupList().filter(QRegularExpression(QStringLiteral("^View #\\d+$"))) : QStringList();
	}

	// work around deleteGroup() not deleting groups out of groupList():
	static const bool KCONFIG_DELETEGROUP_BROKEN = true;

	void TabWidget::loadViews(const KConfig *config)
	{
	if (config) {
	QStringList groupList = extractViewGroups(config);
	groupList.sort();
	for (const QString &group : qAsConst(groupList)) {
	const KConfigGroup kcg(config, group);
	if (!KCONFIG_DELETEGROUP_BROKEN \|\| kcg.readEntry("magic", 0U) == 0xFA1AFE1U) {
	addView(kcg);
	}
	}
	}
	if (!count()) {
	// add default view:
	addView(QString(), QStringLiteral("all-certificates"));
	}
	}

	void TabWidget::saveViews(KConfig *config) const
	{
	if (!config) {
	return;
	}
	Q_FOREACH (const QString &group, extractViewGroups(config)) {
	config->deleteGroup(group);
	}
	unsigned int vg = 0;
	for (unsigned int i = 0, end = count(); i != end; ++i) {
	if (const Page *const p = d->page(i)) {
	if (p->isTemporary()) {
	continue;
	}
	KConfigGroup group(config, QString::asprintf("View #%u", vg++));
	p->saveTo(group);
	if (KCONFIG_DELETEGROUP_BROKEN) {
	group.writeEntry("magic", 0xFA1AFE1U);
	}
	}
	}
	}

	static void xconnect(const QObject o1, const char signal, const QObject o2, const char slot)
	{
	QObject::connect(o1, signal, o2, slot);
	QObject::connect(o2, signal, o1, slot);
	}

	void TabWidget::connectSearchBar(QObject *sb)
	{
	xconnect(sb, SIGNAL(stringFilterChanged(QString)),
	this, SLOT(setStringFilter(QString)));
	xconnect(sb, SIGNAL(keyFilterChanged(std::shared_ptr<Kleo::KeyFilter>)),
	this, SLOT(setKeyFilter(std::shared_ptr<Kleo::KeyFilter>)));
	connect(this, SIGNAL(enableChangeStringFilter(bool)),
	sb, SLOT(setChangeStringFilterEnabled(bool)));
	connect(this, SIGNAL(enableChangeKeyFilter(bool)),
	sb, SLOT(setChangeKeyFilterEnabled(bool)));
	}

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

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