ui: graph view edges

Added simple edges to the graph view. Also fixed a memory leak source in QtMainWindow.

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

@@ -7,6 +7,8 @@
 
 #include "component/view/graphElements/GraphNode.h"
 
+class QtGraphEdge;
+
 class QtGraphNode:
 	public GraphNode,
 	public QGraphicsRectItem
@@ -15,8 +17,23 @@ public:
 	QtGraphNode(const Vec2i& position, const std::string& name);
 	virtual ~QtGraphNode();
 
+	virtual Vec2i getPosition();
+
+	virtual void addOutEdge(const std::shared_ptr<GraphEdge>& edge);
+	virtual void addInEdge(const std::weak_ptr<GraphEdge>& edge);
+
+	virtual void removeOutEdge(const std::shared_ptr<GraphEdge>& edge);
+
+	void mousePressEvent(QGraphicsSceneMouseEvent *event);
+	void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+
 private:
 	QGraphicsTextItem* m_text;
+
+	std::list<std::shared_ptr<GraphEdge> > m_outEdges;
+	std::list<std::weak_ptr<GraphEdge> > m_inEdges;
+
+	Vec2i m_mouseOffset;
 };
 
 #endif // QT_GRAPH_NODE_H