ui: graph showing neighbours

The graph view can now display the n1 neighbours of the active node, including connections between neighbours.

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

@@ -3,6 +3,8 @@
 
 #include <memory>
 
+#include "utility/types.h"
+
 class GraphNode;
 
 class GraphEdge
@@ -13,20 +15,39 @@ public:
 
 	virtual void ownerMoved() = 0;
 	virtual void targetMoved() = 0;
+
+	virtual void removeEdgeFromScene() = 0;
+
+	virtual std::weak_ptr<GraphNode> getOwner() = 0;
+	virtual std::weak_ptr<GraphNode> getTarget() = 0;
 };
 
 // temporary data structure for (visual) graph creation process
 struct DummyEdge
 {
 public:
-	DummyEdge(const std::weak_ptr<GraphNode> o, const std::weak_ptr<GraphNode> t)
-		: owner(o)
-		, target(t)
+	DummyEdge(const Id o, const Id t)
+		: ownerId(o)
+		, targetId(t)
 	{
 	}
 
-	std::weak_ptr<GraphNode> owner;
-	std::weak_ptr<GraphNode> target;
+	Id ownerId;
+	Id targetId;
+
+	bool operator==(const DummyEdge& other) const
+	{
+		if(ownerId == other.ownerId && targetId == other.targetId)
+		{
+			return true;
+		}
+		return false;
+	}
+
+	bool operator!=(const DummyEdge& other) const
+	{
+		return !(*this == other);
+	}
 };
 
 #endif // GRAPH_EDGE_H

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

@@ -18,10 +18,12 @@ public:
 	Id getTokenId();
 	virtual Vec2i getPosition() = 0;
 
-	virtual void addOutEdge(const std::shared_ptr<GraphEdge>& edge) = 0;
-	virtual void addInEdge(const std::weak_ptr<GraphEdge>& edge) = 0;
+	virtual bool addOutEdge(const std::shared_ptr<GraphEdge>& edge) = 0;
+	virtual bool addInEdge(const std::weak_ptr<GraphEdge>& edge) = 0;
 
-	virtual void removeOutEdge(const std::shared_ptr<GraphEdge>& edge) = 0;
+	virtual void removeOutEdge(GraphEdge* edge) = 0;
+
+	virtual void addSubNode(const std::shared_ptr<GraphNode>& node) = 0;
 
 protected:
 	Id m_tokenId;