src: refactoring of GraphNode and GraphEdge classes

* common base class QtGraphNode
* derived class QtGraphNodeData for nodes representing the data model
* removed GraphNode and GraphEdge interface classes
* moved and renamed files for DummyNode and DummyEdge
* refactored includes throughout Graph UI related files

src/app/CMakeLists.txt

@@ -59,6 +59,8 @@ add_files(
 	qt/view/graphElements/QtGraphNode.h
 	qt/view/graphElements/QtGraphNodeAccess.cpp
 	qt/view/graphElements/QtGraphNodeAccess.h
+	qt/view/graphElements/QtGraphNodeData.cpp
+	qt/view/graphElements/QtGraphNodeData.h
 	qt/view/graphElements/QtGraphNodeExpandToggle.cpp
 	qt/view/graphElements/QtGraphNodeExpandToggle.h
 

src/app/qt/view/QtGraphView.cpp

@@ -1,4 +1,4 @@
-#include "QtGraphView.h"
+#include "qt/view/QtGraphView.h"
 
 #include <QBoxLayout>
 #include <QFrame>
@@ -8,6 +8,9 @@
 #include <QParallelAnimationGroup>
 #include <QSequentialAnimationGroup>
 
+#include "component/controller/helper/DummyEdge.h"
+#include "component/controller/helper/DummyNode.h"
+
 #include "qt/utility/QtGraphPostprocessor.h"
 #include "qt/utility/utilityQt.h"
 
@@ -15,7 +18,7 @@
 #include "qt/view/graphElements/nodeComponents/QtGraphNodeComponentClickable.h"
 #include "qt/view/graphElements/nodeComponents/QtGraphNodeComponentMoveable.h"
 #include "qt/view/graphElements/QtGraphEdge.h"
-#include "qt/view/graphElements/QtGraphNode.h"
+#include "qt/view/graphElements/QtGraphNodeData.h"
 #include "qt/view/graphElements/QtGraphNodeAccess.h"
 #include "qt/view/graphElements/QtGraphNodeExpandToggle.h"
 
@@ -27,7 +30,6 @@ QtGraphView::QtGraphView(ViewLayout* viewLayout)
 	, m_resizeFunctor(std::bind(&QtGraphView::doResize, this))
 	, m_focusInFunctor(std::bind(&QtGraphView::doFocusIn, this, std::placeholders::_1))
 	, m_focusOutFunctor(std::bind(&QtGraphView::doFocusOut, this, std::placeholders::_1))
-
 {
 }
 
@@ -245,7 +247,7 @@ std::shared_ptr<QtGraphNode> QtGraphView::createNodeRecursive(
 	std::shared_ptr<QtGraphNode> newNode;
 	if (node.isGraphNode())
 	{
-		newNode = std::make_shared<QtGraphNode>(node.data, node.childVisible);
+		newNode = std::make_shared<QtGraphNodeData>(node.data, node.childVisible);
 	}
 	else if (node.isAccessNode())
 	{

src/app/qt/view/QtGraphView.h

@@ -3,11 +3,10 @@
 
 #include <QPointF>
 
-#include "qt/utility/QtThreadedFunctor.h"
-#include "utility/math/MatrixDynamicBase.h"
-#include "utility/math/Vector4.h"
 #include "utility/types.h"
 
+#include "qt/utility/QtThreadedFunctor.h"
+
 #include "component/view/GraphView.h"
 
 struct DummyEdge;

src/app/qt/view/graphElements/QtGraphEdge.cpp

@@ -1,21 +1,20 @@
 #include "qt/view/graphElements/QtGraphEdge.h"
 
-#include <QGraphicsScene>
 #include <QGraphicsSceneEvent>
-#include <QPen>
 
 #include "utility/messaging/type/MessageActivateTokens.h"
 #include "utility/messaging/type/MessageFocusIn.h"
 #include "utility/messaging/type/MessageFocusOut.h"
 
-#include "component/view/graphElements/GraphNode.h"
 #include "component/view/GraphViewStyle.h"
+#include "data/graph/Edge.h"
 #include "data/graph/token_component/TokenComponentAggregation.h"
 #include "qt/graphics/QtAngledLineItem.h"
 #include "qt/graphics/QtStraightLineItem.h"
+#include "qt/view/graphElements/QtGraphNode.h"
 
-QtGraphEdge::QtGraphEdge(const std::weak_ptr<GraphNode>& owner, const std::weak_ptr<GraphNode>& target, const Edge* data)
-	: GraphEdge(data)
+QtGraphEdge::QtGraphEdge(const std::weak_ptr<QtGraphNode>& owner, const std::weak_ptr<QtGraphNode>& target, const Edge* data)
+	: m_data(data)
 	, m_owner(owner)
 	, m_target(target)
 	, m_child(nullptr)
@@ -30,20 +29,25 @@ QtGraphEdge::~QtGraphEdge()
 {
 }
 
-std::weak_ptr<GraphNode> QtGraphEdge::getOwner()
+const Edge* QtGraphEdge::getData() const
+{
+	return m_data;
+}
+
+std::weak_ptr<QtGraphNode> QtGraphEdge::getOwner()
 {
 	return m_owner;
 }
 
-std::weak_ptr<GraphNode> QtGraphEdge::getTarget()
+std::weak_ptr<QtGraphNode> QtGraphEdge::getTarget()
 {
 	return m_target;
 }
 
 void QtGraphEdge::updateLine()
 {
-	std::shared_ptr<GraphNode> owner = m_owner.lock();
-	std::shared_ptr<GraphNode> target = m_target.lock();
+	std::shared_ptr<QtGraphNode> owner = m_owner.lock();
+	std::shared_ptr<QtGraphNode> target = m_target.lock();
 
 	if (owner == NULL || target == NULL)
 	{
@@ -114,6 +118,18 @@ void QtGraphEdge::onClick()
 	}
 }
 
+void QtGraphEdge::focusIn()
+{
+	bool isActive = m_isActive;
+	this->setIsActive(true);
+	m_isActive = isActive;
+}
+
+void QtGraphEdge::focusOut()
+{
+	this->setIsActive(m_isActive);
+}
+
 void QtGraphEdge::mousePressEvent(QGraphicsSceneMouseEvent* event)
 {
 	m_mousePos = Vec2i(event->scenePos().x(), event->scenePos().y());
@@ -147,15 +163,3 @@ void QtGraphEdge::hoverLeaveEvent(QGraphicsSceneHoverEvent* event)
 {
 	MessageFocusOut(getData()->getId()).dispatch();
 }
-
-void QtGraphEdge::focusIn()
-{
-	bool isActive = m_isActive;
-	this->setIsActive(true);
-	m_isActive = isActive;
-}
-
-void QtGraphEdge::focusOut()
-{
-	this->setIsActive(m_isActive);
-}

src/app/qt/view/graphElements/QtGraphEdge.h

@@ -7,24 +7,24 @@
 
 #include "utility/math/Vector2.h"
 
-#include "component/view/graphElements/GraphEdge.h"
-
-class GraphNode;
+class Edge;
+class QtGraphNode;
 
 class QtGraphEdge
 	: public QObject
-	, public GraphEdge
 	, public QGraphicsItemGroup
 {
 	Q_OBJECT
 	Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity)
 
 public:
-	QtGraphEdge(const std::weak_ptr<GraphNode>& owner, const std::weak_ptr<GraphNode>& target, const Edge* data);
+	QtGraphEdge(const std::weak_ptr<QtGraphNode>& owner, const std::weak_ptr<QtGraphNode>& target, const Edge* data);
 	virtual ~QtGraphEdge();
 
-	virtual std::weak_ptr<GraphNode> getOwner();
-	virtual std::weak_ptr<GraphNode> getTarget();
+	const Edge* getData() const;
+
+	virtual std::weak_ptr<QtGraphNode> getOwner();
+	virtual std::weak_ptr<QtGraphNode> getTarget();
 
 	virtual void updateLine();
 
@@ -45,8 +45,10 @@ protected:
 	virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent* event);
 
 private:
-	std::weak_ptr<GraphNode> m_owner;
-	std::weak_ptr<GraphNode> m_target;
+	const Edge* m_data;
+
+	std::weak_ptr<QtGraphNode> m_owner;
+	std::weak_ptr<QtGraphNode> m_target;
 
 	QGraphicsLineItem* m_child;
 

src/app/qt/view/graphElements/QtGraphNode.cpp

@@ -1,14 +1,10 @@
 #include "qt/view/graphElements/QtGraphNode.h"
 
 #include <QBrush>
+#include <QFont>
 #include <QGraphicsSceneEvent>
 #include <QPen>
 
-#include "utility/messaging/type/MessageActivateTokens.h"
-#include "utility/messaging/type/MessageGraphNodeMove.h"
-#include "utility/messaging/type/MessageFocusIn.h"
-#include "utility/messaging/type/MessageFocusOut.h"
-
 #include "qt/graphics/QtRoundedRectItem.h"
 #include "qt/utility/QtDeviceScaledPixmap.h"
 #include "qt/utility/QtGraphPostprocessor.h"
@@ -43,11 +39,9 @@ QFont QtGraphNode::getFontForNodeType(Node::NodeType type)
 }
 
 QtGraphNode::QtGraphNode()
-	: GraphNode(nullptr)
-	, m_undefinedRect(nullptr)
+	: m_undefinedRect(nullptr)
 	, m_isActive(false)
 	, m_isHovering(false)
-	, m_childVisible(false)
 {
 	this->setPen(QPen(Qt::transparent));
 
@@ -55,45 +49,29 @@ QtGraphNode::QtGraphNode()
 	m_text = new QGraphicsSimpleTextItem(this);
 }
 
-QtGraphNode::QtGraphNode(const Node* data, bool childVisible)
-	: GraphNode(data)
-	, m_undefinedRect(nullptr)
-	, m_isActive(false)
-	, m_isHovering(false)
-	, m_childVisible(childVisible)
-{
-	this->setPen(QPen(Qt::transparent));
-
-	m_rect = new QtRoundedRectItem(this);
-	m_text = new QGraphicsSimpleTextItem(this);
-
-	this->setAcceptHoverEvents(true);
-
-	this->setName(data->getName());
-}
-
 QtGraphNode::~QtGraphNode()
 {
 }
 
-std::string QtGraphNode::getName() const
+QtGraphNode* QtGraphNode::getParent() const
 {
-	return m_text->text().toStdString();
+	return m_parentNode.lock().get();
 }
 
-void QtGraphNode::setName(const std::string& name)
+void QtGraphNode::setParent(std::weak_ptr<QtGraphNode> parentNode)
 {
-	m_text->setText(QString::fromStdString(name));
+	m_parentNode = parentNode;
+
+	std::shared_ptr<QtGraphNode> parent = parentNode.lock();
+	if (parent != NULL)
+	{
+		QGraphicsRectItem::setParentItem(parent.get());
+	}
 }
 
-bool QtGraphNode::isAccessNode() const
+std::list<std::shared_ptr<QtGraphNode>> QtGraphNode::getSubNodes() const
 {
-	return false;
-}
-
-bool QtGraphNode::isExpandToggleNode() const
-{
-	return false;
+	return m_subNodes;
 }
 
 Vec2i QtGraphNode::getPosition() const
@@ -116,16 +94,6 @@ bool QtGraphNode::setPosition(const Vec2i& position)
 	return false;
 }
 
-void QtGraphNode::moved()
-{
-	QtGraphPostprocessor::alignNodeOnRaster(this);
-
-	if (m_data)
-	{
-		MessageGraphNodeMove(m_data->getId(), getPosition()).dispatch();
-	}
-}
-
 Vec2i QtGraphNode::getSize() const
 {
 	return m_size;
@@ -144,6 +112,16 @@ void QtGraphNode::setSize(const Vec2i& size)
 	}
 }
 
+QSize QtGraphNode::size() const
+{
+	return QSize(m_size.x, m_size.y);
+}
+
+void QtGraphNode::setSize(const QSize& size)
+{
+	setSize(Vec2i(size.width(), size.height()));
+}
+
 Vec4i QtGraphNode::getBoundingRect() const
 {
 	Vec2i pos = getPosition();
@@ -167,12 +145,12 @@ Vec4i QtGraphNode::getParentBoundingRect() const
 	return node->getBoundingRect();
 }
 
-void QtGraphNode::addOutEdge(const std::shared_ptr<GraphEdge>& edge)
+void QtGraphNode::addOutEdge(const std::shared_ptr<QtGraphEdge>& edge)
 {
 	m_outEdges.push_back(edge);
 }
 
-void QtGraphNode::addInEdge(const std::weak_ptr<GraphEdge>& edge)
+void QtGraphNode::addInEdge(const std::weak_ptr<QtGraphEdge>& edge)
 {
 	m_inEdges.push_back(edge);
 }
@@ -187,16 +165,6 @@ size_t QtGraphNode::getInEdgeCount() const
 	return m_inEdges.size();
 }
 
-QSize QtGraphNode::size() const
-{
-	return QSize(m_size.x, m_size.y);
-}
-
-void QtGraphNode::setSize(const QSize& size)
-{
-	setSize(Vec2i(size.width(), size.height()));
-}
-
 bool QtGraphNode::getIsActive() const
 {
 	return m_isActive;
@@ -209,20 +177,14 @@ void QtGraphNode::setIsActive(bool isActive)
 	updateStyle();
 }
 
-QtGraphNode* QtGraphNode::getParent() const
+std::string QtGraphNode::getName() const
 {
-	return m_parentNode.lock().get();
+	return m_text->text().toStdString();
 }
 
-void QtGraphNode::setParent(std::weak_ptr<QtGraphNode> parentNode)
+void QtGraphNode::setName(const std::string& name)
 {
-	m_parentNode = parentNode;
-
-	std::shared_ptr<QtGraphNode> parent = parentNode.lock();
-	if (parent != NULL)
-	{
-		QGraphicsRectItem::setParentItem(parent.get());
-	}
+	m_text->setText(QString::fromStdString(name));
 }
 
 void QtGraphNode::addComponent(const std::shared_ptr<QtGraphNodeComponent>& component)
@@ -230,16 +192,6 @@ void QtGraphNode::addComponent(const std::shared_ptr<QtGraphNodeComponent>& comp
 	m_components.push_back(component);
 }
 
-std::list<std::shared_ptr<QtGraphNode>> QtGraphNode::getSubNodes() const
-{
-	return m_subNodes;
-}
-
-void QtGraphNode::addSubNode(const std::shared_ptr<QtGraphNode>& node)
-{
-	m_subNodes.push_back(node);
-}
-
 void QtGraphNode::setShadowEnabledRecursive(bool enabled)
 {
 	m_rect->setShadowEnabled(enabled);
@@ -250,14 +202,6 @@ void QtGraphNode::setShadowEnabledRecursive(bool enabled)
 	}
 }
 
-void QtGraphNode::onClick()
-{
-	if (!m_isActive && m_data && !m_data->isType(Node::NODE_UNDEFINED | Node::NODE_NAMESPACE))
-	{
-		MessageActivateTokens(m_data->getId()).dispatch();
-	}
-}
-
 void QtGraphNode::hoverEnter()
 {
 	hoverEnterEvent(nullptr);
@@ -269,11 +213,50 @@ void QtGraphNode::hoverEnter()
 	}
 }
 
-void QtGraphNode::updateStyle()
+void QtGraphNode::focusIn()
+{
+	m_isHovering = true;
+	updateStyle();
+}
+
+void QtGraphNode::focusOut()
+{
+	m_isHovering = false;
+	updateStyle();
+}
+
+bool QtGraphNode::isDataNode() const
+{
+	return false;
+}
+
+bool QtGraphNode::isAccessNode() const
+{
+	return false;
+}
+
+bool QtGraphNode::isExpandToggleNode() const
+{
+	return false;
+}
+
+Id QtGraphNode::getTokenId() const
+{
+	return 0;
+}
+
+void QtGraphNode::addSubNode(const std::shared_ptr<QtGraphNode>& node)
+{
+	m_subNodes.push_back(node);
+}
+
+void QtGraphNode::moved()
+{
+	QtGraphPostprocessor::alignNodeOnRaster(this);
+}
+
+void QtGraphNode::onClick()
 {
-	GraphViewStyle::NodeStyle style =
-		GraphViewStyle::getStyleForNodeType(m_data->getType(), m_isActive, m_isHovering, m_childVisible);
-	setStyle(style);
 }
 
 void QtGraphNode::mousePressEvent(QGraphicsSceneMouseEvent* event)
@@ -333,44 +316,16 @@ void QtGraphNode::mouseReleaseEvent(QGraphicsSceneMouseEvent* event)
 	}
 }
 
-void QtGraphNode::hoverEnterEvent(QGraphicsSceneHoverEvent* event)
-{
-	if(m_data)
-	{
-		MessageFocusIn(m_data->getId()).dispatch();
-	}
-}
-
-void QtGraphNode::hoverLeaveEvent(QGraphicsSceneHoverEvent* event)
-{
-	if(m_data)
-	{
-		MessageFocusOut(m_data->getId()).dispatch();
-	}
-}
-
-void QtGraphNode::focusIn()
-{
-	m_isHovering = true;
-	updateStyle();
-}
-
-void QtGraphNode::focusOut()
-{
-	m_isHovering = false;
-	updateStyle();
-}
-
 void QtGraphNode::notifyEdgesAfterMove()
 {
-	for (const std::shared_ptr<GraphEdge>& edge : m_outEdges)
+	for (const std::shared_ptr<QtGraphEdge>& edge : m_outEdges)
 	{
 		edge->updateLine();
 	}
 
-	for (const std::weak_ptr<GraphEdge>& e : m_inEdges)
+	for (const std::weak_ptr<QtGraphEdge>& e : m_inEdges)
 	{
-		std::shared_ptr<GraphEdge> edge = e.lock();
+		std::shared_ptr<QtGraphEdge> edge = e.lock();
 		if (edge)
 		{
 			edge->updateLine();

src/app/qt/view/graphElements/QtGraphNode.h

@@ -1,20 +1,17 @@
 #ifndef QT_GRAPH_NODE_H
 #define QT_GRAPH_NODE_H
 
-#include <QFontMetrics>
 #include <QGraphicsItem>
 
-#include "component/view/graphElements/GraphNode.h"
 #include "component/view/GraphViewStyle.h"
-#include "utility/messaging/MessageListener.h"
 
+class QFont;
 class QtGraphEdge;
 class QtRoundedRectItem;
 class QtGraphNodeComponent;
 
 class QtGraphNode
 	: public QObject
-	, public GraphNode
 	, public QGraphicsRectItem
 {
     Q_OBJECT
@@ -33,69 +30,70 @@ public:
 	static QFont getFontForNodeType(Node::NodeType type);
 
 	QtGraphNode();
-	QtGraphNode(const Node* data, bool childVisible);
 	virtual ~QtGraphNode();
 
-	virtual std::string getName() const;
-	void setName(const std::string& name);
-
-	virtual bool isAccessNode() const;
-	virtual bool isExpandToggleNode() const;
-
-	virtual Vec2i getPosition() const;
-	virtual bool setPosition(const Vec2i& position);
-	virtual void moved();
-
-	virtual Vec2i getSize() const;
-	virtual void setSize(const Vec2i& size);
-
-	virtual Vec4i getBoundingRect() const;
-	virtual Vec4i getParentBoundingRect() const;
-
-	virtual void addOutEdge(const std::shared_ptr<GraphEdge>& edge);
-	virtual void addInEdge(const std::weak_ptr<GraphEdge>& edge);
-
-	virtual size_t getOutEdgeCount() const;
-	virtual size_t getInEdgeCount() const;
-
-	QSize size() const;
-	void setSize(const QSize& size);
-
-	bool getIsActive() const;
-	void setIsActive(bool isActive);
-
 	QtGraphNode* getParent() const;
 	void setParent(std::weak_ptr<QtGraphNode> parentNode);
 
-	void addComponent(const std::shared_ptr<QtGraphNodeComponent>& component);
-
 	std::list<std::shared_ptr<QtGraphNode>> getSubNodes() const;
-	virtual void addSubNode(const std::shared_ptr<QtGraphNode>& node);
+
+	Vec2i getPosition() const;
+	bool setPosition(const Vec2i& position);
+
+	Vec2i getSize() const;
+	void setSize(const Vec2i& size);
+
+	QSize size() const;
+	void setSize(const QSize& size);
+
+	Vec4i getBoundingRect() const;
+	Vec4i getParentBoundingRect() const;
+
+	void addOutEdge(const std::shared_ptr<QtGraphEdge>& edge);
+	void addInEdge(const std::weak_ptr<QtGraphEdge>& edge);
+
+	size_t getOutEdgeCount() const;
+	size_t getInEdgeCount() const;
+
+	bool getIsActive() const;
+	void setIsActive(bool isActive);
+
+	std::string getName() const;
+	void setName(const std::string& name);
+
+	void addComponent(const std::shared_ptr<QtGraphNodeComponent>& component);
 
 	void setShadowEnabledRecursive(bool enabled);
 
-	virtual void onClick();
 	void hoverEnter();
 
 	void focusIn();
 	void focusOut();
 
-	virtual void updateStyle();
+	virtual bool isDataNode() const;
+	virtual bool isAccessNode() const;
+	virtual bool isExpandToggleNode() const;
+
+	virtual Id getTokenId() const;
+
+	virtual void addSubNode(const std::shared_ptr<QtGraphNode>& node);
+
+	virtual void onClick();
+	virtual void moved();
+
+	virtual void updateStyle() = 0;
 
 protected:
 	virtual void mousePressEvent(QGraphicsSceneMouseEvent* event);
 	virtual void mouseMoveEvent(QGraphicsSceneMouseEvent* event);
 	virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent* event);
 
-	virtual void hoverEnterEvent(QGraphicsSceneHoverEvent* event);
-	virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent* event);
-
 	void notifyEdgesAfterMove();
 
 	void setStyle(const GraphViewStyle::NodeStyle& style);
 
-	std::list<std::shared_ptr<GraphEdge>> m_outEdges;
-	std::list<std::weak_ptr<GraphEdge>> m_inEdges;
+	std::list<std::shared_ptr<QtGraphEdge>> m_outEdges;
+	std::list<std::weak_ptr<QtGraphEdge>> m_inEdges;
 
 	std::weak_ptr<QtGraphNode> m_parentNode;
 	std::list<std::shared_ptr<QtGraphNode>> m_subNodes;
@@ -106,12 +104,11 @@ protected:
 
 	Vec2i m_size;
 
-private:
-	std::list<std::shared_ptr<QtGraphNodeComponent>> m_components;
-
 	bool m_isActive;
 	bool m_isHovering;
-	bool m_childVisible;
+
+private:
+	std::list<std::shared_ptr<QtGraphNodeComponent>> m_components;
 };
 
 #endif // QT_GRAPH_NODE_H

src/app/qt/view/graphElements/QtGraphNodeAccess.cpp

@@ -27,16 +27,16 @@ QtGraphNodeAccess::~QtGraphNodeAccess()
 {
 }
 
-bool QtGraphNodeAccess::isAccessNode() const
-{
-	return true;
-}
-
 TokenComponentAccess::AccessType QtGraphNodeAccess::getAccessType() const
 {
 	return m_access;
 }
 
+bool QtGraphNodeAccess::isAccessNode() const
+{
+	return true;
+}
+
 void QtGraphNodeAccess::addSubNode(const std::shared_ptr<QtGraphNode>& node)
 {
 	QtGraphNode::addSubNode(node);

src/app/qt/view/graphElements/QtGraphNodeAccess.h

@@ -11,11 +11,12 @@ public:
 	QtGraphNodeAccess(TokenComponentAccess::AccessType accessType);
 	virtual ~QtGraphNodeAccess();
 
-	virtual bool isAccessNode() const;
 	TokenComponentAccess::AccessType getAccessType() const;
 
-	virtual void addSubNode(const std::shared_ptr<QtGraphNode>& node);
+	// QtGraphNode implementation
+	virtual bool isAccessNode() const;
 
+	virtual void addSubNode(const std::shared_ptr<QtGraphNode>& node);
 	virtual void updateStyle();
 
 	void hideLabel();

src/app/qt/view/graphElements/QtGraphNodeData.cpp

@@ -0,0 +1,66 @@
+#include "qt/view/graphElements/QtGraphNodeData.h"
+
+#include "utility/messaging/type/MessageActivateTokens.h"
+#include "utility/messaging/type/MessageFocusIn.h"
+#include "utility/messaging/type/MessageFocusOut.h"
+#include "utility/messaging/type/MessageGraphNodeMove.h"
+
+QtGraphNodeData::QtGraphNodeData(const Node* data, bool childVisible)
+	: m_data(data)
+	, m_childVisible(childVisible)
+{
+	this->setAcceptHoverEvents(true);
+
+	this->setName(data->getName());
+}
+
+QtGraphNodeData::~QtGraphNodeData()
+{
+}
+
+const Node* QtGraphNodeData::getData() const
+{
+	return m_data;
+}
+
+bool QtGraphNodeData::isDataNode() const
+{
+	return true;
+}
+
+Id QtGraphNodeData::getTokenId() const
+{
+	return m_data->getId();
+}
+
+void QtGraphNodeData::onClick()
+{
+	if (!m_isActive && !m_data->isType(Node::NODE_UNDEFINED | Node::NODE_NAMESPACE))
+	{
+		MessageActivateTokens(m_data->getId()).dispatch();
+	}
+}
+
+void QtGraphNodeData::moved()
+{
+	QtGraphNode::moved();
+
+	MessageGraphNodeMove(m_data->getId(), getPosition()).dispatch();
+}
+
+void QtGraphNodeData::updateStyle()
+{
+	GraphViewStyle::NodeStyle style =
+		GraphViewStyle::getStyleForNodeType(m_data->getType(), m_isActive, m_isHovering, m_childVisible);
+	setStyle(style);
+}
+
+void QtGraphNodeData::hoverEnterEvent(QGraphicsSceneHoverEvent* event)
+{
+	MessageFocusIn(m_data->getId()).dispatch();
+}
+
+void QtGraphNodeData::hoverLeaveEvent(QGraphicsSceneHoverEvent* event)
+{
+	MessageFocusOut(m_data->getId()).dispatch();
+}

src/app/qt/view/graphElements/QtGraphNodeData.h

@@ -0,0 +1,33 @@
+#ifndef QT_GRAPH_NODE_DATA_H
+#define QT_GRAPH_NODE_DATA_H
+
+#include "qt/view/graphElements/QtGraphNode.h"
+
+class QtGraphNodeData
+	: public QtGraphNode
+{
+public:
+	QtGraphNodeData(const Node* data, bool childVisible);
+	virtual ~QtGraphNodeData();
+
+	const Node* getData() const;
+
+	// QtGraphNode implementation
+	virtual bool isDataNode() const;
+
+	virtual Id getTokenId() const;
+
+	virtual void onClick();
+	virtual void moved();
+	virtual void updateStyle();
+
+protected:
+	virtual void hoverEnterEvent(QGraphicsSceneHoverEvent* event);
+	virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent* event);
+
+private:
+	const Node* m_data;
+	bool m_childVisible;
+};
+
+#endif // QT_GRAPH_NODE_DATA_H

src/app/qt/view/graphElements/QtGraphNodeExpandToggle.cpp

@@ -1,10 +1,13 @@
 #include "qt/view/graphElements/QtGraphNodeExpandToggle.h"
 
+#include <QFontMetrics>
+
 #include "utility/logging/logging.h"
 #include "utility/messaging/type/MessageGraphNodeExpand.h"
 
 #include "qt/graphics/QtRoundedRectItem.h"
 #include "qt/utility/QtDeviceScaledPixmap.h"
+#include "qt/view/graphElements/QtGraphNodeData.h"
 
 QtGraphNodeExpandToggle::QtGraphNodeExpandToggle(bool expanded, int invisibleSubNodeCount)
 	: m_allVisible(invisibleSubNodeCount == 0)
@@ -47,9 +50,9 @@ void QtGraphNodeExpandToggle::onClick()
 {
 	QtGraphNode* parent = getParent();
 
-	if (parent && parent->getData())
+	if (parent && parent->getTokenId())
 	{
-		MessageGraphNodeExpand(parent->getData()->getId()).dispatch();
+		MessageGraphNodeExpand(parent->getTokenId()).dispatch();
 	}
 }
 

src/app/qt/view/graphElements/QtGraphNodeExpandToggle.h

@@ -12,6 +12,7 @@ public:
 	QtGraphNodeExpandToggle(bool expanded, int invisibleSubNodeCount);
 	virtual ~QtGraphNodeExpandToggle();
 
+	// QtGraphNode implementation
 	virtual bool isExpandToggleNode() const;
 
 	virtual void onClick();

src/app/qt/view/graphElements/nodeComponents/QtGraphNodeComponentMoveable.cpp

@@ -16,7 +16,7 @@ QtGraphNodeComponentMoveable::~QtGraphNodeComponentMoveable()
 
 void QtGraphNodeComponentMoveable::nodeMousePressEvent(QGraphicsSceneMouseEvent* event)
 {
-	std::shared_ptr<GraphNode> node = m_graphNode.lock();
+	std::shared_ptr<QtGraphNode> node = m_graphNode.lock();
 	if (node != NULL)
 	{
 		m_mouseOffset.x = event->scenePos().x() - node->getPosition().x;
@@ -28,7 +28,7 @@ void QtGraphNodeComponentMoveable::nodeMousePressEvent(QGraphicsSceneMouseEvent*
 
 void QtGraphNodeComponentMoveable::nodeMouseMoveEvent(QGraphicsSceneMouseEvent* event)
 {
-	std::shared_ptr<GraphNode> node = m_graphNode.lock();
+	std::shared_ptr<QtGraphNode> node = m_graphNode.lock();
 	if (node != NULL)
 	{
 		node->setPosition(Vec2i(event->scenePos().x() - m_mouseOffset.x, event->scenePos().y() - m_mouseOffset.y));

src/lib/CMakeLists.txt

@@ -35,6 +35,8 @@ add_files(
 add_files(
 	LIB_FILES
 
+	component/controller/helper/DummyEdge.h
+	component/controller/helper/DummyNode.h
 	component/controller/helper/SnippetMerger.cpp
 	component/controller/helper/SnippetMerger.h
 
@@ -55,11 +57,6 @@ add_files(
 	component/controller/UndoRedoController.cpp
 	component/controller/UndoRedoController.h
 
-	component/view/graphElements/GraphEdge.cpp
-	component/view/graphElements/GraphEdge.h
-	component/view/graphElements/GraphNode.cpp
-	component/view/graphElements/GraphNode.h
-
 	component/view/CodeView.cpp
 	component/view/CodeView.h
 	component/view/CompositeView.cpp

src/lib/component/controller/GraphController.cpp

@@ -4,8 +4,8 @@
 
 #include "utility/logging/logging.h"
 
-#include "component/view/graphElements/GraphEdge.h"
-#include "component/view/graphElements/GraphNode.h"
+#include "component/controller/helper/DummyEdge.h"
+#include "component/controller/helper/DummyNode.h"
 #include "component/view/GraphView.h"
 #include "component/view/GraphViewStyle.h"
 #include "data/access/StorageAccess.h"

src/lib/component/controller/GraphLayouter.cpp

@@ -1,16 +1,14 @@
 #include "component/controller/GraphLayouter.h"
 
-#include <iostream>
-
 #include <cmath>
 #include <map>
 #include <queue>
 
-#include "component/view/graphElements/GraphEdge.h"
-#include "component/view/graphElements/GraphNode.h"
-
 #include "utility/math/MatrixDynamicBase.h"
 
+#include "component/controller/helper/DummyEdge.h"
+#include "component/controller/helper/DummyNode.h"
+
 // for prototyping, remove when done
 #include "Eigen/Dense"
 #include "Eigen/Eigenvalues"
@@ -151,10 +149,7 @@ void GraphLayouter::layoutSpectralPrototype(std::vector<DummyNode>& nodes, const
 
 			nodes[i].position.x = newPos.x;
 			nodes[i].position.y = newPos.y;
-
-			//std::cout << newPos << std::endl;
 		}
-		//std::cout << "=================" << std::endl;
 	}
 }
 

src/lib/component/controller/helper/DummyEdge.h

@@ -0,0 +1,29 @@
+#ifndef DUMMY_EDGE_H
+#define DUMMY_EDGE_H
+
+#include "utility/types.h"
+
+class Edge;
+
+// temporary data structure for (visual) graph creation process
+struct DummyEdge
+{
+	DummyEdge(const Id ownerId, const Id targetId, const Edge* data)
+		: ownerId(ownerId)
+		, targetId(targetId)
+		, data(data)
+		, visible(false)
+		, active(false)
+	{
+	}
+
+	Id ownerId;
+	Id targetId;
+
+	const Edge* data;
+
+	bool visible;
+	bool active;
+};
+
+#endif // DUMMY_EDGE_H

src/lib/component/controller/helper/DummyNode.h

@@ -1,51 +1,14 @@
-#ifndef GRAPH_NODE_H
-#define GRAPH_NODE_H
-
-#include <list>
-#include <memory>
+#ifndef DUMMY_NODE_H
+#define DUMMY_NODE_H
 
 #include "utility/math/Vector2.h"
-#include "utility/math/Vector4.h"
 #include "utility/types.h"
 
-#include "data/graph/Node.h"
 #include "data/graph/token_component/TokenComponentAccess.h"
 
-class GraphEdge;
-
-class GraphNode
-{
-public:
-	GraphNode(const Node* data);
-	virtual ~GraphNode();
-
-	virtual std::string getName() const = 0;
-	Id getTokenId() const;
-
-	const Node* getData() const;
-	void setData(const Node* data);
-
-	virtual bool isAccessNode() const = 0;
-
-	virtual Vec2i getPosition() const = 0;
-	virtual bool setPosition(const Vec2i& position) = 0;
-
-	virtual Vec2i getSize() const = 0;
-	virtual void setSize(const Vec2i& size) = 0;
-
-	virtual Vec4i getBoundingRect() const = 0;
-	virtual Vec4i getParentBoundingRect() const = 0;
-
-	virtual void addOutEdge(const std::shared_ptr<GraphEdge>& edge) = 0;
-	virtual void addInEdge(const std::weak_ptr<GraphEdge>& edge) = 0;
-
-	virtual size_t getOutEdgeCount() const = 0;
-	virtual size_t getInEdgeCount() const = 0;
-
-protected:
-	const Node* m_data;
-};
+class Node;
 
+// temporary data structure for (visual) graph creation process
 struct DummyNode
 {
 public:
@@ -111,4 +74,4 @@ public:
 	size_t invisibleSubNodeCount;
 };
 
-#endif // GRAPH_NODE_H
+#endif // DUMMY_NODE_H

src/lib/component/view/GraphView.h

@@ -1,10 +1,6 @@
 #ifndef GRAPH_VIEW_H
 #define GRAPH_VIEW_H
 
-#include <list>
-#include <memory>
-
-#include "utility/math/Vector2.h"
 #include "utility/types.h"
 
 #include "component/view/View.h"

src/lib/component/view/GraphViewStyle.cpp

@@ -2,6 +2,7 @@
 
 #include "utility/logging/logging.h"
 
+#include "component/view/GraphViewStyleImpl.h"
 #include "settings/ApplicationSettings.h"
 
 GraphViewStyle::NodeMargins::NodeMargins()

src/lib/component/view/GraphViewStyle.h

@@ -4,11 +4,14 @@
 #include <map>
 #include <memory>
 
-#include "component/view/graphElements/GraphNode.h"
-#include "component/view/GraphViewStyleImpl.h"
+#include "utility/math/Vector2.h"
+#include "utility/math/Vector4.h"
+
 #include "data/graph/Node.h"
 #include "data/graph/token_component/TokenComponentAccess.h"
 
+class GraphViewStyleImpl;
+
 class GraphViewStyle
 {
 public:

src/lib/component/view/graphElements/GraphEdge.cpp

@@ -1,15 +0,0 @@
-#include "component/view/graphElements/GraphEdge.h"
-
-GraphEdge::GraphEdge(const Edge* data)
-	: m_data(data)
-{
-}
-
-GraphEdge::~GraphEdge()
-{
-}
-
-const Edge* GraphEdge::getData() const
-{
-	return m_data;
-}

src/lib/component/view/graphElements/GraphEdge.h

@@ -1,50 +0,0 @@
-#ifndef GRAPH_EDGE_H
-#define GRAPH_EDGE_H
-
-#include <memory>
-
-#include "data/graph/Edge.h"
-#include "utility/math/Vector4.h"
-#include "utility/types.h"
-
-class GraphNode;
-
-class GraphEdge
-{
-public:
-	GraphEdge(const Edge* data);
-	virtual ~GraphEdge();
-
-	virtual std::weak_ptr<GraphNode> getOwner() = 0;
-	virtual std::weak_ptr<GraphNode> getTarget() = 0;
-
-	virtual void updateLine() = 0;
-
-	const Edge* getData() const;
-
-private:
-	const Edge* m_data;
-};
-
-// temporary data structure for (visual) graph creation process
-struct DummyEdge
-{
-	DummyEdge(const Id o, const Id t, const Edge* data)
-		: ownerId(o)
-		, targetId(t)
-		, data(data)
-		, visible(false)
-		, active(false)
-	{
-	}
-
-	Id ownerId;
-	Id targetId;
-
-	const Edge* data;
-
-	bool visible;
-	bool active;
-};
-
-#endif // GRAPH_EDGE_H

src/lib/component/view/graphElements/GraphNode.cpp

@@ -1,29 +0,0 @@
-#include "component/view/graphElements/GraphNode.h"
-
-GraphNode::GraphNode(const Node* data)
-	: m_data(data)
-{
-}
-
-GraphNode::~GraphNode()
-{
-}
-
-Id GraphNode::getTokenId() const
-{
-	if (m_data)
-	{
-		return m_data->getId();
-	}
-	return 0;
-}
-
-const Node* GraphNode::getData() const
-{
-	return m_data;
-}
-
-void GraphNode::setData(const Node* data)
-{
-	m_data = data;
-}