text: #ifndef GRAPH_EDIT_H
  #define GRAPH_EDIT_H
  
  #include "scene/gui/graph_node.h"
  #include "scene/gui/scroll_bar.h"
  
  class GraphEdit;
  
  class GraphEditFilter : public Control {
  
  	OBJ_TYPE(GraphEditFilter,Control);
  
  	friend class GraphEdit;
  	GraphEdit *ge;
  	virtual bool has_point(const Point2& p_point) const;
  
  public:
  
  
  	GraphEditFilter(GraphEdit *p_edit);
  };
  
  class GraphEdit : public Control {
  
  	OBJ_TYPE(GraphEdit,Control);
  public:
  
  	struct Connection {
  		StringName from;
  		StringName to;
  		int from_port;
  		int to_port;
  
  	};
  private:
  
  	HScrollBar* h_scroll;
  	VScrollBar* v_scroll;
  
  
  	bool connecting;
  	String connecting_from;
  	bool connecting_out;
  	int connecting_index;
  	int connecting_type;
  	Color connecting_color;
  	bool connecting_target;
  	Vector2 connecting_to;
  	String connecting_target_to;
  	int connecting_target_index;
  
  	bool dragging;
  	bool just_selected;
  	Vector2 drag_accum;
  
  	bool box_selecting;
  	bool box_selection_mode_aditive;
  	Point2 box_selecting_from;
  	Point2 box_selecting_to;
  	Rect2 box_selecting_rect;
  	List<GraphNode*> previus_selected;
  
  	bool right_disconnects;
  	bool updating;
  	List<Connection> connections;
  
  	void _draw_cos_line(const Vector2& p_from, const Vector2& p_to,const Color& p_color);
  
  	void _graph_node_raised(Node* p_gn);
  	void _graph_node_moved(Node *p_gn);
  
  	void _update_scroll();
  	void _scroll_moved(double);
  	void _input_event(const InputEvent& p_ev);
  
  	GraphEditFilter *top_layer;
  	void _top_layer_input(const InputEvent& p_ev);
  	void _top_layer_draw();
  	void _update_scroll_offset();
  
  	Array _get_connection_list() const;
  
  	friend class GraphEditFilter;
  	bool _filter_input(const Point2& p_point);
  protected:
  
  	static void _bind_methods();
  	virtual void add_child_notify(Node *p_child);
  	virtual void remove_child_notify(Node *p_child);
  	void _notification(int p_what);
  
  public:
  
  	Error connect_node(const StringName& p_from, int p_from_port,const StringName& p_to,int p_to_port);
  	bool is_node_connected(const StringName& p_from, int p_from_port,const StringName& p_to,int p_to_port);
  	void disconnect_node(const StringName& p_from, int p_from_port,const StringName& p_to,int p_to_port);
  	void clear_connections();
  
  	GraphEditFilter *get_top_layer() const { return top_layer; }
  	void get_connection_list(List<Connection> *r_connections) const;
  
  	void set_right_disconnects(bool p_enable);
  	bool is_right_disconnects_enabled() const;
  
  
  	GraphEdit();
  };
  
  #endif // GRAPHEdit_H
  