kwin/kcmkwin/kwindecoration/kcm.h
David Edmundson 29179f115c Avoid a crash on Kwin decoration KCM teardown
Summary:
As described in https://bugreports.qt.io/browse/QTBUG-57714  exposing a
QWidget as a context item to QtQuick can crash. Especially as the
engine's context property gets deleted whilst deleting the parent item.

This patch reworks the code so that the models are exposed to QML
directly rather than going through a QWidget.

CCBUG: 373628

Test Plan:
Pressing back whilst in the decoration KCM used to crash every time, now it doesn't.
I still have the buttons.

Reviewers: #plasma, graesslin

Reviewed By: #plasma, graesslin

Subscribers: graesslin, cfeck, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D4533
2017-02-10 10:52:48 +01:00

80 lines
2.1 KiB
C++

/*
* Copyright 2014 Martin Gräßlin <mgraesslin@kde.org>
*
* This program 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) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef KDECORATIONS_KCM_H
#define KDECORATIONS_KCM_H
#include <kcmodule.h>
#include <ui_kcm.h>
#include <QAbstractItemModel>
class QSortFilterProxyModel;
class QQuickView;
namespace KDecoration2
{
namespace Preview
{
class PreviewBridge;
class ButtonsModel;
}
namespace Configuration
{
class DecorationsModel;
class ConfigurationForm : public QWidget, public Ui::KCMForm
{
public:
explicit ConfigurationForm(QWidget* parent);
};
class ConfigurationModule : public KCModule
{
Q_OBJECT
public:
explicit ConfigurationModule(QWidget *parent = nullptr, const QVariantList &args = QVariantList());
virtual ~ConfigurationModule();
bool eventFilter(QObject *watched, QEvent *e) override;
public Q_SLOTS:
void defaults() override;
void load() override;
void save() override;
protected:
void showEvent(QShowEvent *ev) override;
private:
void showKNS(const QString &config);
void updateColors();
DecorationsModel *m_model;
QSortFilterProxyModel *m_proxyModel;
ConfigurationForm *m_ui;
QQuickView *m_quickView;
Preview::ButtonsModel *m_leftButtons;
Preview::ButtonsModel *m_rightButtons;
Preview::ButtonsModel *m_availableButtons;
};
}
}
#endif