/***************************************************************************
              f4lmdoc.h  -  description
                 -------------------
    begin                : Sat Jun  7 02:29:46 EEST 2003
    copyright            : (C) 2003 by �kan pakdil
    email                : ozkanpakdil@users.sourceforge.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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef F4LMDOC_H
#define F4LMDOC_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif	

// include files for QT
#include <qobject.h>
#include <qstring.h>
#include <qtl.h>
#include "clayer.h"

// forward declaration of the F4lm classes
class F4lmView;
class QProcess;

/**	F4lmDoc provides a document object for a document-view model.
  *
  * The F4lmDoc class provides a document object that can be used in conjunction with the classes
  * F4lmApp and F4lmView to create a document-view model for MDI (Multiple Document Interface)
  * Qt applications based on QApplication and QMainWindow as main classes and QWorkspace as MDI manager widget.
  * Thereby, the document object is created by the F4lmApp instance (and kept in a document list) and contains
  * the document structure with the according methods for manipulating the document
  * data by F4lmView objects. Also, F4lmDoc contains the methods for serialization of the document data
  * from and to files.
  * @author Ozkan Pakdil
  * @version 0.1
  */
class F4lmDoc:public QObject
{

  Q_OBJECT

  friend class F4lmView;

public:
  /** Constructor for the fileclass of the application */
  F4lmDoc ();

  /** Destructor for the fileclass of the application */
  ~F4lmDoc ();

  /** adds a view to the document which represents the document contents. Usually this is your main view. */
  void addView (F4lmView * view);

  /** removes a view from the list of currently connected views */
  void removeView (F4lmView * view);

  /** gets called if a view is removed or added */
  void changedViewList ();

  /** returns the first view instance */
  F4lmView * firstView ()
  {
    return pViewList->first ();
  };

  /** returns true, if the requested view is the last view of the document */
  bool isLastView ();

  /** This method gets called when the user is about to close a frame window. It checks, if more than one view
  	* is connected to the document (then the frame can be closed), if pFrame is the last view and the document is
  	* modified, the user gets asked if he wants to save the document.
  	*/
  bool canCloseFrame (F4lmView * pFrame);

  /** sets the modified flag for the document after a modifying action on the view connected to the document.*/
  void setModified (bool _m = true)
  {
    modified = _m;
  };

  /** returns if the document is modified or not. Use this to determine if your document needs saving by the user on closing.*/
  bool isModified ()
  {
    return modified;
  };

  /** deletes the document's contents */
  void deleteContents ();

  /** initializes the document generally */
  bool newDocument ();

  /** closes the acutal document */
  void closeDocument ();

  /** loads the document by filename and format and emits the updateViews() signal */
  bool openDocument (const QString & filename, const char *format = 0);

  /** saves the document under filename and format.*/
  bool saveDocument (const QString & filename, const char *format = 0);

  /** sets the path to the file connected with the document */
  void setPathName (const QString & name);

  /** returns the pathname of the current document file*/
  const QString & pathName () const;

  /** sets the filename of the document */
  void setTitle (const QString & title);

  /** returns the title of the document */
  const QString & title () const;
  QPtrList < CLayer > *pLayerList;
QProcess *proc;
QStringList procOut;


public slots:
  /** calls repaint() on all views connected to the document object and is called by the view by which the document has been changed.
   * As this view normally repaints itself, it is excluded from the paintEvent.
   */
  void updateAllViews (F4lmView * sender);
  void slotfileExportMovie();
  void readFromStdout();


private:
  /** the modified flag of the current document */
  bool modified;

  QString m_title;
  QString m_filename;

  /** the list of the views currently connected to the document */
  QPtrList < F4lmView > *pViewList;

};
#endif // F4LMDOC_H