Differential D11250 Diff 29945 mpris2/dbusabstractadaptor.cpp

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mpris2/dbusabstractadaptor.cpp

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		1		/***************************************************************************
		2		* Copyright 2018 Friedrich W. H. Kossebau <kossebau@kde.org> *
		3		* *
		4		* This program is free software; you can redistribute it and/or modify *
		5		* it under the terms of the GNU General Public License as published by *
		6		* the Free Software Foundation; either version 2 of the License, or *
		7		* (at your option) any later version. *
		8		***************************************************************************/
		9
		10		#include "dbusabstractadaptor.h"
		11
		12		// Qt
		13		#include <QMetaClassInfo>
		14		#include <QDBusMessage>
		15		#include <QDBusConnection>
		16
		17		namespace Okular
		18		{
		19
		20		DBusAbstractAdaptor::DBusAbstractAdaptor(const QString &objectDBusPath, QObject *parent)
		21		: QDBusAbstractAdaptor(parent)
		22		, mObjectPath(objectDBusPath)
		23		{
		24		Q_ASSERT(!mObjectPath.isEmpty());
		25		}
		26
		27		void DBusAbstractAdaptor::signalPropertyChange(const QString &propertyName, const QVariant &value)
		28		{
		29		const bool firstChange = mChangedProperties.isEmpty();
		30
		31		mChangedProperties.insert(propertyName, value);
		32
		33		if (firstChange) {
		34		// trigger signal emission on next event loop
		35		QMetaObject::invokeMethod(this, "emitPropertiesChangeDBusSignal", Qt::QueuedConnection);
		36		}
		37		}
		38
		39
		40		void DBusAbstractAdaptor::emitPropertiesChangeDBusSignal()
		41		{
		42		if (mChangedProperties.isEmpty()) {
		43		return;
		44		}
		45
		46		const QMetaObject* metaObject = this->metaObject();
		47		const int dBusInterfaceNameIndex = metaObject->indexOfClassInfo("D-Bus Interface");
		48		Q_ASSERT(dBusInterfaceNameIndex >= 0);
		49		const char* dBusInterfaceName = metaObject->classInfo(dBusInterfaceNameIndex).value();
		50
		51		QDBusMessage signalMessage = QDBusMessage::createSignal(mObjectPath,
		52		QStringLiteral("org.freedesktop.DBus.Properties"),
		53		QStringLiteral("PropertiesChanged"));
		54		signalMessage
		55		<< dBusInterfaceName
		56		<< mChangedProperties
		57		<< QStringList();
		58
		59		QDBusConnection::sessionBus().send(signalMessage);
		60
		61		mChangedProperties.clear();
		62		}
		63
		64		}