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                          docclipreflist.h  -  description
    begin                : Sat Aug 10 2002
    copyright            : (C) 2002 by Jason Wood
    email                : jasonwood@blueyonder.co.uk

 *                                                                         *
 *   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.                                   *
 *                                                                         *


#include <qptrlist.h>
#include "docclipref.h"

/**An List for DocClipBase objects. Use this instead of QPtrList<DocClipBase> so as to sort lists correctly.
      * Also contains the ability to set a "master clip", which can be used by a number of operations where
      * the need for one clip to act as a reference for what happens to all clips is needed.
  * @author Jason Wood

00030 class DocClipRefList:public QPtrList < DocClipRef > {
    DocClipRefList(const DocClipRefList & list);
     DocClipRefList & operator=(const DocClipRefList & list);
      /** Compares Clips based upon starting time. */
    int compareItems(QPtrCollection::Item i1, QPtrCollection::Item i2);
      /** Returns an XML version of this DocClipRefList. The root element will take the name passed in.*/
    QDomDocument toXML(const QString & name);
      /** Sets the master clip to the one specified. If the clip is not in the clip list, then the 
      method does not do anything. */
    void setMasterClip(DocClipRef * clip);
      /** Returns the current master clip for this cliplist. */
    DocClipRef *masterClip() const;

      /** Appends list to the end of the current onw. */
    void appendList(const DocClipRefList & list);

    void clear();
  private:              // Private attributes
      /** The "master clip" of this list. The master clip is special only in that it is mentioned
      seperately to every other clip in the clip list; it also appears in the clip list. It is
      singled out so that operations that require a master clip can     make use of it. */
00054      DocClipRef * m_masterClip;


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