src/xml/helper-observer.h

	helper-observer.h revision 280e31bdf7f5ffd28f8b14565c1d93de4070bd0c
#ifndef __XML_HELPER_OBSERVER__
#define __XML_HELPER_OBSERVER__

#include "node-observer.h"
#include "node.h"
#include "../sp-object.h"
//#include "../sp-object-repr.h"
#include <sigc++/sigc++.h>

namespace Inkscape {
    namespace XML {
        class Node;

        // Very simple observer that just emits a signal if anything happens to a node
        class SignalObserver : public NodeObserver
        {
        public:
            SignalObserver();

            // Add this observer to the SPObject and remove it from any previous object
            void set(SPObject* o);
            void notifyChildAdded(Node&, Node&, Node*);
            void notifyChildRemoved(Node&, Node&, Node*);
            void notifyChildOrderChanged(Node&, Node&, Node*, Node*);
            void notifyContentChanged(Node&, Util::ptr_shared<char>, Util::ptr_shared<char>);
            void notifyAttributeChanged(Node&, GQuark, Util::ptr_shared<char>, Util::ptr_shared<char>);
            sigc::signal<void>& signal_changed();
        private:
            sigc::signal<void> _signal_changed;
            SPObject* _oldsel;
        };
    }
}

#endif //#ifndef __XML_HELPER_OBSERVER__