Selector.h

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#ifndef SELECTOR_H_
#define SELECTOR_H_

#include <map>
#include "selectable.h"

typedef std::multimap<SelectionIntersection, Selectable*> SelectableSortedSet;

class SelectionPool: public Selector
{
        SelectableSortedSet m_pool;
        SelectionIntersection m_intersection;
        Selectable* m_selectable;

    public:

        void pushSelectable (Selectable& selectable)
        {
            m_intersection = SelectionIntersection();
            m_selectable = &selectable;
        }

        void popSelectable ()
        {
            addSelectable(m_intersection, m_selectable);
            m_intersection = SelectionIntersection();
        }

        void addIntersection (const SelectionIntersection& intersection)
        {
            assign_if_closer(m_intersection, intersection);
        }

        void addSelectable (const SelectionIntersection& intersection, Selectable* selectable)
        {
            if (intersection.valid()) {
                m_pool.insert(SelectableSortedSet::value_type(intersection, selectable));
            }
        }

        typedef SelectableSortedSet::iterator iterator;

        iterator begin ()
        {
            return m_pool.begin();
        }

        iterator end ()
        {
            return m_pool.end();
        }

        bool failed ()
        {
            return m_pool.empty();
        }
};

#endif /*SELECTOR_H_*/