src/jabber_whiteboard/undo-stack-observer.h

   1 /**
   2  * Undo / redo / undo log commit listener
   3  *
   4  * Authors:
   5  * David Yip <yipdw@rose-hulman.edu>
   6  *
   7  * Copyright (c) 2005 Authors
   8  *
   9  * Released under GNU GPL, read the file 'COPYING' for more information
  10  */
  11
  12 #ifndef __WHITEBOARD_UNDO_COMMIT_OBSERVER_H__
  13 #define __WHITEBOARD_UNDO_COMMIT_OBSERVER_H__
  14
  15 #include <glibmm.h>
  16 #include "../undo-stack-observer.h"
  17 #include "jabber_whiteboard/typedefs.h"
  18
  19 namespace Inkscape {
  20
  21 namespace Whiteboard {
  22
  23 class SessionManager;
  24
  25 /**
  26  * Inkboard implementation of Inkscape::UndoStackObserver.
  27  */
  28 class UndoStackObserver : public Inkscape::UndoStackObserver {
  29 public:
  30         enum ObserverType {
  31                 UNDO_EVENT,
  32                 REDO_EVENT,
  33                 UNDO_COMMIT_EVENT
  34         };
  35
  36         UndoStackObserver(SessionManager* sm);
  37         ~UndoStackObserver();
  38         void notifyUndoEvent(XML::Event* log);
  39         void notifyRedoEvent(XML::Event* log);
  40         void notifyUndoCommitEvent(XML::Event* log);
  41
  42         void lockObserverFromSending(ObserverType type);
  43         void unlockObserverFromSending(ObserverType type);
  44
  45 private:
  46         SessionManager* _sm;
  47
  48         // common action handler
  49         void _doAction(XML::Event* log);
  50
  51         // noncopyable, nonassignable
  52         UndoStackObserver(UndoStackObserver const& other);
  53         UndoStackObserver& operator=(UndoStackObserver const& other);
  54
  55         unsigned int _undoSendEventLocks;
  56         unsigned int _redoSendEventLocks;
  57         unsigned int _undoCommitSendEventLocks;
  58 };
  59
  60 }
  61
  62 }
  63
  64 #endif
  65
  66 /*
  67   Local Variables:
  68   mode:c++
  69   c-file-style:"stroustrup"
  70   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  71   indent-tabs-mode:nil
  72   fill-column:99
  73   End:
  74 */
  75 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :