File: linkselection.h

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/*
 * Copyright (c) 2004 Scott E. Johnston
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the names of the copyright holders not be used in
 * advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.  The copyright holders make
 * no representations about the suitability of this software for any purpose.
 * It is provided "as is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 * 
 */

/*
 * LinkSelection - manages the selection of graphics between remotely linked drawing editors.
 */

#ifndef link_selection_h
#define link_selection_h

#ifdef HAVE_ACE
#include <OverlayUnidraw/ovselection.h>

class DrawLinkList;

//: distributed Selection class
// specialized Selection class with support for coordinating the selection of graphics
// between two remote drawing editors that are linked together.
class LinkSelection: public OverlaySelection {
public:
    LinkSelection(DrawEditor* ed, LinkSelection* = nil);
    LinkSelection(DrawEditor* ed, Selection*);

    virtual void Update(Viewer* = nil); 
    virtual void Clear(Viewer* = nil);

    virtual void Reserve();
    // reserve newly created graphics in selection across the network

    void AddComp(OverlayComp*);
    // add this graphic to the Selection.

  enum { NotSelected, LocallySelected, RemotelySelected, WaitingToBeSelected };

  static const char* selected_string(int state) 
    { return state>=0 && state<=WaitingToBeSelected ?  _selected_strings[state] : nil; }

protected:
  DrawEditor* _editor;
  static GraphicIdList* _locally_selected;
  static GraphicIdList* _waiting_to_be_selected;

  static const char* _selected_strings[];

};
#endif /* HAVE_ACE */
#endif