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#ifndef SEEN_INKSCAPE_XML_SP_REPR_ACTION_H
#define SEEN_INKSCAPE_XML_SP_REPR_ACTION_H
#include <glib/gtypes.h>
#include <glib/gquark.h>
#include <glibmm/ustring.h>
#include <iterator>
#include "util/share.h"
#include "util/forward-pointer-iterator.h"
#include "gc-managed.h"
#include "xml/node.h"
namespace Inkscape {
namespace XML {
class Node;
class NodeObserver;
enum EventType {
EVENT_ADD,
EVENT_DEL,
EVENT_CHG_ATTR,
EVENT_CHG_CONTENT,
EVENT_CHG_ORDER
};
class Event
: public Inkscape::GC::Managed<Inkscape::GC::SCANNED, Inkscape::GC::MANUAL>
{
public:
virtual ~Event() {}
Event *next;
int serial;
Node *repr;
struct IteratorStrategy {
static Event const *next(Event const *action) {
return action->next;
}
};
typedef Inkscape::Util::ForwardPointerIterator<Event, IteratorStrategy> Iterator;
typedef Inkscape::Util::ForwardPointerIterator<Event const, IteratorStrategy> ConstIterator;
Event *optimizeOne() { return _optimizeOne(); }
void undoOne(NodeObserver &observer) const {
_undoOne(observer);
}
void replayOne(NodeObserver &observer) const {
_replayOne(observer);
}
protected:
Event(Node *r, Event *n)
: next(n), serial(_next_serial++), repr(r) {}
virtual Event *_optimizeOne()=0;
virtual void _undoOne(NodeObserver &) const=0;
virtual void _replayOne(NodeObserver &) const=0;
private:
static int _next_serial;
};
class EventAdd : public Event {
public:
EventAdd(Node *repr, Node *c, Node *rr, Event *next)
: Event(repr, next), child(c), ref(rr) {}
Node *child;
Node *ref;
private:
Event *_optimizeOne();
void _undoOne(NodeObserver &observer) const;
void _replayOne(NodeObserver &observer) const;
};
class EventDel : public Event {
public:
EventDel(Node *repr, Node *c, Node *rr, Event *next)
: Event(repr, next), child(c), ref(rr) {}
Node *child;
Node *ref;
private:
Event *_optimizeOne();
void _undoOne(NodeObserver &observer) const;
void _replayOne(NodeObserver &observer) const;
};
class EventChgAttr : public Event {
public:
EventChgAttr(Node *repr, GQuark k,
Inkscape::Util::ptr_shared<char> ov,
Inkscape::Util::ptr_shared<char> nv,
Event *next)
: Event(repr, next), key(k),
oldval(ov), newval(nv) {}
GQuark key;
Inkscape::Util::ptr_shared<char> oldval;
Inkscape::Util::ptr_shared<char> newval;
private:
Event *_optimizeOne();
void _undoOne(NodeObserver &observer) const;
void _replayOne(NodeObserver &observer) const;
};
class EventChgContent : public Event {
public:
EventChgContent(Node *repr,
Inkscape::Util::ptr_shared<char> ov,
Inkscape::Util::ptr_shared<char> nv,
Event *next)
: Event(repr, next), oldval(ov), newval(nv) {}
Inkscape::Util::ptr_shared<char> oldval;
Inkscape::Util::ptr_shared<char> newval;
private:
Event *_optimizeOne();
void _undoOne(NodeObserver &observer) const;
void _replayOne(NodeObserver &observer) const;
};
class EventChgOrder : public Event {
public:
EventChgOrder(Node *repr, Node *c, Node *orr, Node *nrr, Event *next)
: Event(repr, next), child(c),
oldref(orr), newref(nrr) {}
Node *child;
Node *oldref, *newref;
private:
Event *_optimizeOne();
void _undoOne(NodeObserver &observer) const;
void _replayOne(NodeObserver &observer) const;
};
}
}
#endif
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