signals 2.0

signal_base.h

@@ -0,0 +1,38 @@
+#ifndef __signal_base_h__
+#define __signal_base_h__
+
+#include "slot_base.h"
+
+class signal_base
+{
+	public:
+
+		signal_base();
+		virtual ~signal_base();
+
+	protected:
+
+		bool bind(const slot_base& slot);
+		bool unbind(const slot_base& slot);
+
+// TEMP HACK	private:
+
+		// linked list data structure
+		struct list_node
+		{
+			slot_base slot;
+			list_node* prev;
+			list_node* next;
+		};
+		list_node* head;
+		list_node* tail;
+
+		// linked list manipulation
+		void clear_list();
+		list_node* find_in_list(const slot_base& slot) const;
+		bool add_to_list(const slot_base& slot);
+		void remove_from_list(list_node* n);
+};
+
+#endif // __signal_base_h__
+