/****************************************************************************
**
** Copyright (C) 2001-2006 Frank Hemer <frank@hemer.org>,
**                         Tilo Riemer <riemer@crossvc.com>,
**                         Jose Hernandez <joseh@tesco.net>
**
**
**----------------------------------------------------------------------------
**
**----------------------------------------------------------------------------
**
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** CrossVC is released under the terms of GPL also.
**
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** CrossVC is released under the terms of the 
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**
**
** CrossVC License for non-Unix platforms (CLNU):
**
** Redistribution and use in binary form, without modification, 
** are permitted provided that the following conditions are met:
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** 4. The source code is the creative property of the authors.
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** CrossVC License for Unix platforms:
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** 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 
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** This program is distributed in 
** the hope that it will be useful, but WITHOUT ANY WARRANTY; without 
** even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
** PARTICULAR PURPOSE.
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** See the GNU General Public License version 2 for more details.
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*****************************************************************************/

#ifndef DIFFDIALOGIMPL_H_20010626
#define DIFFDIALOGIMPL_H_20010626

#include "config.h"

#include <qvaluevector.h>
#include <qiconset.h>
#include <qcommonstyle.h>
#include <qapplication.h>

#include "CvsBuffer.h"
#include "diffview.h"
#include "DiffDialog.h"


class DiffView;


class ChangedBlock
{
 public:
   ChangedBlock() {}
   ChangedBlock( const int& lin, const DiffView::DiffType& typ) : m_lines(lin), m_type(typ) {}
  
   int lines() const { return m_lines; }
   DiffView::DiffType type() const { return m_type; }
  
 private:
   int m_lines;
   DiffView::DiffType m_type;
};

typedef QMap<int,ChangedBlock> ChangesMap;


class DiffDialogImpl : public DiffDialog
{ 
   Q_OBJECT

 public:
   DiffDialogImpl(const QIconSet &whatsThisIconSet,
	 QWidget* parent = 0, const char* name = 0,
	 WFlags fl = 0);

   ~DiffDialogImpl();

   void parseCvsDiff(CvsBuffer*, QString, QString revA = "",
	 QString revB = "");
   void updateViews();

 public slots:
   void toggleSynchronize(bool);
   void enterWhatsThisMode();

 private:
   class SplitterStyle : public QCommonStyle {
    public:
      SplitterStyle(DiffDialogImpl * ddi) : QCommonStyle(),dlg(ddi) {}
	 
	 void drawPrimitive(PrimitiveElement pe, QPainter *p,
	       const QRect &r, const QColorGroup &cg, SFlags flags = Style_Default,
	       const QStyleOption &StyleOption = QStyleOption::Default) const;
	 
	 int pixelMetric(PixelMetric metric, const QWidget *widget) const {
	    return ((metric == PM_SplitterWidth) ? SPLITTER_WIDTH :
		  QApplication::style().pixelMetric(metric, widget));
	 }
	 
	 void polishPopupMenu ( QPopupMenu * p) {QApplication::style().polishPopupMenu(p);}
	 
    private:
	 // Disabled copy constructor and operator=
	 SplitterStyle(const SplitterStyle &);
	 SplitterStyle& operator=(const SplitterStyle &);
	 
	 DiffDialogImpl * dlg;
	 static const unsigned int SPLITTER_WIDTH;
   };
   friend class SplitterStyle;

   struct MatchMark {
      int pos;
      int len;
   };

   void analyzeChangeDiff(QString &, DiffView::DiffList &, QString &, DiffView::DiffList &);
   void markBestMatch(QString &, int, int, QString &, int, int,QMap<int,MatchMark> &);

   ChangesMap m_changes;
   int m_linesTotal;
};

#endif // DIFFDIALOGIMPL_H_20010626