/* * Inkscape::XML::CompositeNodeObserver - combine multiple observers * * Copyright 2005 MenTaLguY <mental@rydia.net> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * See the file COPYING for details. * */ #ifndef SEEN_INKSCAPE_XML_COMPOSITE_NODE_OBSERVER_H #define SEEN_INKSCAPE_XML_COMPOSITE_NODE_OBSERVER_H #include "gc-managed.h" #include "xml/node-observer.h" #include "util/list-container.h" namespace Inkscape { namespace XML { class NodeEventVector; class CompositeNodeObserver : public NodeObserver, public GC::Managed<> { public: struct ObserverRecord : public GC::Managed<> { explicit ObserverRecord(NodeObserver &o) : observer(o), marked(false) {} NodeObserver &observer; bool marked; //< if marked for removal }; typedef Util::ListContainer<ObserverRecord> ObserverRecordList; CompositeNodeObserver() : _iterating(0), _active_marked(0), _pending_marked(0) {} void add(NodeObserver &observer); void addListener(NodeEventVector const &vector, void *data); void remove(NodeObserver &observer); void removeListenerByData(void *data); void notifyChildAdded(Node &node, Node &child, Node *prev); void notifyChildRemoved(Node &node, Node &child, Node *prev); void notifyChildOrderChanged(Node &node, Node &child, Node *old_prev, Node *new_prev); void notifyContentChanged(Node &node, Util::ptr_shared<char> old_content, Util::ptr_shared<char> new_content); void notifyAttributeChanged(Node &node, GQuark name, Util::ptr_shared<char> old_value, Util::ptr_shared<char> new_value); private: unsigned _iterating; ObserverRecordList _active; unsigned _active_marked; ObserverRecordList _pending; unsigned _pending_marked; void _startIteration() { ++_iterating; } void _finishIteration(); }; } } #endif /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :