71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
/*
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Gwenview: an image viewer
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Copyright 2018 Friedrich W. H. Kossebau <kossebau@kde.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "dbusabstractadaptor.h"
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// Qt
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#include <QDBusConnection>
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#include <QDBusMessage>
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#include <QMetaClassInfo>
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namespace Gwenview
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{
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DBusAbstractAdaptor::DBusAbstractAdaptor(const QString &objectDBusPath, QObject *parent)
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: QDBusAbstractAdaptor(parent)
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, mObjectPath(objectDBusPath)
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{
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Q_ASSERT(!mObjectPath.isEmpty());
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}
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void DBusAbstractAdaptor::signalPropertyChange(const QString &propertyName, const QVariant &value)
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{
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const bool firstChange = mChangedProperties.isEmpty();
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mChangedProperties.insert(propertyName, value);
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if (firstChange) {
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// trigger signal emission on next event loop
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QMetaObject::invokeMethod(this, &DBusAbstractAdaptor::emitPropertiesChangeDBusSignal, Qt::QueuedConnection);
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}
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}
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void DBusAbstractAdaptor::emitPropertiesChangeDBusSignal()
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{
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if (mChangedProperties.isEmpty()) {
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return;
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}
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const QMetaObject *metaObject = this->metaObject();
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const int dBusInterfaceNameIndex = metaObject->indexOfClassInfo("D-Bus Interface");
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Q_ASSERT(dBusInterfaceNameIndex >= 0);
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const char *dBusInterfaceName = metaObject->classInfo(dBusInterfaceNameIndex).value();
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QDBusMessage signalMessage =
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QDBusMessage::createSignal(mObjectPath, QStringLiteral("org.freedesktop.DBus.Properties"), QStringLiteral("PropertiesChanged"));
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signalMessage << dBusInterfaceName << mChangedProperties << QStringList();
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QDBusConnection::sessionBus().send(signalMessage);
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mChangedProperties.clear();
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}
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}
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#include "moc_dbusabstractadaptor.cpp"
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