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/*
* 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::shared_ptr<char> old_content,
Util::shared_ptr<char> new_content);
void notifyAttributeChanged(Node &node, GQuark name,
Util::shared_ptr<char> old_value,
Util::shared_ptr<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 :
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