VFSTreePopulator.h

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#ifndef VFSTREEPOPULATOR_H_
#define VFSTREEPOPULATOR_H_

#include <gtk/gtktreestore.h>

#include <map>
#include <string>
#include <set>

namespace gtkutil
{

    class VFSTreePopulator
    {
            // The GtkTreeStore to populate
            GtkTreeStore* _store;

            // Toplevel node to add children under
            GtkTreeIter* _topLevel;

            // Maps of names to corresponding GtkTreeIter* nodes, for both intermediate
            // paths and explicitly presented paths
            typedef std::map<std::string, GtkTreeIter*> NamedIterMap;
            NamedIterMap _iters;

            // Set of paths that are passed in through addPath(), to distinguish them
            // from intermediate constructed paths
            std::set<std::string> _explicitPaths;

        private:

            // Main recursive add function. Accepts a VFS path and adds the new node,
            // calling itself if necessary to add all of the parent directories, then
            // returns a GtkTreeIter* pointing to the new node.
            GtkTreeIter* addRecursive (const std::string& path);

        public:

            VFSTreePopulator (GtkTreeStore* store, GtkTreeIter* toplevel = NULL);

            virtual ~VFSTreePopulator ();

            void addPath (const std::string& path);

            struct Visitor
            {

                    virtual void visit (GtkTreeStore* store, GtkTreeIter* iter, const std::string& path,
                            bool isExplicit) = 0;
            };

            void forEachNode (Visitor& visitor);
    };

}

#endif /*VFSTREEPOPULATOR_H_*/