kleopageconfigdialog.cpp
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	/*
	kleopageconfigdialog.cpp

	This file is part of Kleopatra
	SPDX-FileCopyrightText: 2016 Bundesamt für Sicherheit in der Informationstechnik
	SPDX-FileContributor: Intevation GmbH

	SPDX-License-Identifier: GPL-2.0-only

	It is derived from KCMultidialog which is:

	SPDX-FileCopyrightText: 2000 Matthias Elter <elter@kde.org>
	SPDX-FileCopyrightText: 2003 Daniel Molkentin <molkentin@kde.org>
	SPDX-FileCopyrightText: 2003, 2006 Matthias Kretz <kretz@kde.org>
	SPDX-FileCopyrightText: 2004 Frans Englich <frans.englich@telia.com>
	SPDX-FileCopyrightText: 2006 Tobias Koenig <tokoe@kde.org>

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

	#include <config-kleopatra.h>

	#include "kleopageconfigdialog.h"

	#include <QDesktopServices>
	#include <QDialogButtonBox>
	#include <QProcess>
	#include <QPushButton>
	#include <QStandardPaths>
	#include <QUrl>

	#include <KCModule>
	#include <KStandardGuiItem>
	#include <KMessageBox>
	#include <KLocalizedString>

	#include "kleopatra_debug.h"

	KleoPageConfigDialog::KleoPageConfigDialog(QWidget *parent)
	: KPageDialog(parent)
	{
	setModal(false);

	QDialogButtonBox *buttonBox = new QDialogButtonBox(this);
	buttonBox->setStandardButtons(QDialogButtonBox::Help
	\| QDialogButtonBox::RestoreDefaults
	\| QDialogButtonBox::Cancel
	\| QDialogButtonBox::Apply
	\| QDialogButtonBox::Ok
	\| QDialogButtonBox::Reset);
	KGuiItem::assign(buttonBox->button(QDialogButtonBox::Ok), KStandardGuiItem::ok());
	KGuiItem::assign(buttonBox->button(QDialogButtonBox::Cancel), KStandardGuiItem::cancel());
	KGuiItem::assign(buttonBox->button(QDialogButtonBox::RestoreDefaults),
	KStandardGuiItem::defaults());
	KGuiItem::assign(buttonBox->button(QDialogButtonBox::Apply), KStandardGuiItem::apply());
	KGuiItem::assign(buttonBox->button(QDialogButtonBox::Reset), KStandardGuiItem::reset());
	KGuiItem::assign(buttonBox->button(QDialogButtonBox::Help), KStandardGuiItem::help());
	buttonBox->button(QDialogButtonBox::Reset)->setEnabled(false);
	buttonBox->button(QDialogButtonBox::Apply)->setEnabled(false);

	connect(buttonBox->button(QDialogButtonBox::Apply), &QAbstractButton::clicked,
	this, &KleoPageConfigDialog::slotApplyClicked);
	connect(buttonBox->button(QDialogButtonBox::Ok), &QAbstractButton::clicked,
	this, &KleoPageConfigDialog::slotOkClicked);
	connect(buttonBox->button(QDialogButtonBox::RestoreDefaults), &QAbstractButton::clicked,
	this, &KleoPageConfigDialog::slotDefaultClicked);
	connect(buttonBox->button(QDialogButtonBox::Help), &QAbstractButton::clicked,
	this, &KleoPageConfigDialog::slotHelpClicked);
	connect(buttonBox->button(QDialogButtonBox::Reset), &QAbstractButton::clicked,
	this, &KleoPageConfigDialog::slotUser1Clicked);

	setButtonBox(buttonBox);

	connect(this, &KPageDialog::currentPageChanged,
	this, &KleoPageConfigDialog::slotCurrentPageChanged);
	}

	void KleoPageConfigDialog::slotCurrentPageChanged(KPageWidgetItem current, KPageWidgetItem previous)
	{
	if (!previous) {
	return;
	}
	blockSignals(true);
	setCurrentPage(previous);

	KCModule previousModule = qobject_cast<KCModule>(previous->widget());
	bool canceled = false;
	if (previousModule && mChangedModules.contains(previousModule)) {
	const int queryUser = KMessageBox::warningTwoActionsCancel(
	this,
	i18n("The settings of the current module have changed.\n"
	"Do you want to apply the changes or discard them?"),
	i18n("Apply Settings"),
	KStandardGuiItem::apply(),
	KStandardGuiItem::discard(),
	KStandardGuiItem::cancel());
	if (queryUser == KMessageBox::ButtonCode::PrimaryAction) {
	previousModule->save();
	} else if (queryUser == KMessageBox::ButtonCode::SecondaryAction) {
	previousModule->load();
	}
	canceled = queryUser == KMessageBox::Cancel;
	}
	if (!canceled) {
	mChangedModules.removeAll(previousModule);
	setCurrentPage(current);
	}
	blockSignals(false);

	clientChanged();
	}

	void KleoPageConfigDialog::apply()
	{
	QPushButton *applyButton = buttonBox()->button(QDialogButtonBox::Apply);
	applyButton->setFocus();
	for (KCModule *module : mChangedModules) {
	module->save();
	}
	mChangedModules.clear();
	Q_EMIT configCommitted();
	clientChanged();
	}

	void KleoPageConfigDialog::slotDefaultClicked()
	{
	const KPageWidgetItem *item = currentPage();
	if (!item) {
	return;
	}

	KCModule module = qobject_cast<KCModule>(item->widget());
	if (!module) {
	return;
	}
	module->defaults();
	clientChanged();
	}

	void KleoPageConfigDialog::slotUser1Clicked()
	{
	const KPageWidgetItem *item = currentPage();
	if (!item) {
	return;
	}

	KCModule module = qobject_cast<KCModule>(item->widget());
	if (!module) {
	return;
	}
	module->load();
	mChangedModules.removeAll(module);
	clientChanged();
	}

	void KleoPageConfigDialog::slotApplyClicked()
	{
	apply();
	}

	void KleoPageConfigDialog::slotOkClicked()
	{
	apply();
	accept();
	}

	void KleoPageConfigDialog::slotHelpClicked()
	{
	const KPageWidgetItem *item = currentPage();
	if (!item) {
	return;
	}

	const QString docPath = mHelpUrls.value(item->name());
	QUrl docUrl;

	#ifdef Q_OS_WIN
	docUrl = QUrl(QLatin1String("https://docs.kde.org/index.php?branch=stable5&language=")
	+ QLocale().name() + QLatin1String("&application=kleopatra"));
	#else
	docUrl = QUrl(QStringLiteral("help:/")).resolved(QUrl(docPath)); // same code as in KHelpClient::invokeHelp
	#endif
	if (docUrl.scheme() == QLatin1String("help") \|\| docUrl.scheme() == QLatin1String("man") \|\| docUrl.scheme() == QLatin1String("info")) {
	// Warning: Don't assume that the program needs to be in PATH. On Windows, it will also be found next to the calling process.
	QProcess::startDetached(QStringLiteral("khelpcenter"), QStringList() << docUrl.toString());
	} else {
	QDesktopServices::openUrl(docUrl);
	}
	}

	void KleoPageConfigDialog::addModule(const QString &name, const QString &docPath, const QString &icon, KCModule *module)
	{
	mModules << module;

	KPageWidgetItem *item = addPage(module, name);
	item->setIcon(QIcon::fromTheme(icon));

	connect(module, SIGNAL(changed(bool)), this, SLOT(moduleChanged(bool)));

	mHelpUrls.insert(name, docPath);
	}

	void KleoPageConfigDialog::moduleChanged(bool state)
	{
	KCModule module = qobject_cast<KCModule>(sender());
	qCDebug(KLEOPATRA_LOG) << "Module changed: " << state << " mod " << module;
	if (mChangedModules.contains(module)) {
	if (!state) {
	mChangedModules.removeAll(module);
	} else {
	return;
	}
	}
	if (state) {
	mChangedModules << module;
	}
	clientChanged();
	}

	void KleoPageConfigDialog::clientChanged()
	{
	const KPageWidgetItem *item = currentPage();
	if (!item) {
	return;
	}
	KCModule module = qobject_cast<KCModule>(item->widget());

	if (!module) {
	return;
	}
	qCDebug(KLEOPATRA_LOG) << "Client changed: " << " mod " << module;

	bool change = mChangedModules.contains(module);

	QPushButton *resetButton = buttonBox()->button(QDialogButtonBox::Reset);
	if (resetButton) {
	resetButton->setEnabled(change);
	}

	QPushButton *applyButton = buttonBox()->button(QDialogButtonBox::Apply);
	if (applyButton) {
	applyButton->setEnabled(change);
	}
	}

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