forked from qt-creator/qt-creator
		
	A simplified version of NodeInstanceSignalSpy is required to track sub objects. I moved all private API usage to QmlPrivateGate. Change-Id: I86e3e5411eb43777a6b1ab5018a1b8fb9088c666 Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>
		
			
				
	
	
		
			128 lines
		
	
	
		
			4.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			128 lines
		
	
	
		
			4.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company.  For licensing terms and
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** conditions see http://www.qt.io/terms-conditions.  For further information
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** use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, The Qt Company gives you certain additional
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** rights.  These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#include "nodeinstancesignalspy.h"
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#include "objectnodeinstance.h"
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#include <qmlprivategate.h>
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#include <QMetaProperty>
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#include <QMetaObject>
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#include <QDebug>
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#include <QSharedPointer>
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#include <QQmlProperty>
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namespace QmlDesigner {
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namespace Internal {
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NodeInstanceSignalSpy::NodeInstanceSignalSpy() :
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    QObject()
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{
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    blockSignals(true);
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}
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void NodeInstanceSignalSpy::setObjectNodeInstance(const ObjectNodeInstance::Pointer &nodeInstance)
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{
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    methodeOffset = QObject::staticMetaObject.methodCount() + 1;
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    registerObject(nodeInstance->object());
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    m_objectNodeInstance = nodeInstance;
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}
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void NodeInstanceSignalSpy::registerObject(QObject *spiedObject)
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{
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    if (m_registeredObjectList.contains(spiedObject)) // prevent cycles
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        return;
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    m_registeredObjectList.append(spiedObject);
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    for (int index = QObject::staticMetaObject.propertyOffset();
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         index < spiedObject->metaObject()->propertyCount();
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         index++) {
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        QMetaProperty metaProperty = spiedObject->metaObject()->property(index);
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        registerProperty(metaProperty, spiedObject);
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        registerChildObject(metaProperty, spiedObject);
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    }
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}
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void NodeInstanceSignalSpy::registerProperty(const QMetaProperty &metaProperty, QObject *spiedObject, const PropertyName &propertyPrefix)
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{
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    if (metaProperty.isReadable()
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            && metaProperty.isWritable()
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            && !QmlPrivateGate::isPropertyQObject(metaProperty)
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            && metaProperty.hasNotifySignal()) {
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        QMetaMethod metaMethod = metaProperty.notifySignal();
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        QMetaObject::connect(spiedObject, metaMethod.methodIndex(), this, methodeOffset, Qt::DirectConnection);
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        m_indexPropertyHash.insert(methodeOffset, propertyPrefix + PropertyName(metaProperty.name()));
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        methodeOffset++;
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    }
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}
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void NodeInstanceSignalSpy::registerChildObject(const QMetaProperty &metaProperty, QObject *spiedObject)
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{
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    if (metaProperty.isReadable()
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            && !metaProperty.isWritable()
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            && QmlPrivateGate::isPropertyQObject(metaProperty)
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            && QLatin1String(metaProperty.name()) != "parent") {
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        QObject *childObject = QmlPrivateGate::readQObjectProperty(metaProperty, spiedObject);
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        if (childObject) {
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            for (int index = QObject::staticMetaObject.propertyOffset();
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                 index < childObject->metaObject()->propertyCount();
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                 index++) {
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                QMetaProperty childMetaProperty = childObject->metaObject()->property(index);
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                registerProperty(childMetaProperty, childObject, PropertyName(metaProperty.name()) + '.');
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            }
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        }
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    }
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}
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int NodeInstanceSignalSpy::qt_metacall(QMetaObject::Call call, int methodId, void **a)
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{
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    if (call == QMetaObject::InvokeMetaMethod && methodId > QObject::staticMetaObject.methodCount()) {
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        ObjectNodeInstance::Pointer nodeInstance = m_objectNodeInstance.toStrongRef();
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        if (nodeInstance && nodeInstance->nodeInstanceServer() && nodeInstance->isValid()) {
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            foreach (const PropertyName &propertyName, m_indexPropertyHash.values(methodId))
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                nodeInstance->nodeInstanceServer()->notifyPropertyChange(nodeInstance->instanceId(), propertyName);
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        }
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    }
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    return QObject::qt_metacall(call, methodId, a);
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}
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} // namespace Internal
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} // namespace QmlDesigner
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