/******************************************************************************
 *
 * 
 *
 *
 * Copyright (C) 1997-2008 by Dimitri van Heesch.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation under the terms of the GNU General Public License is hereby 
 * granted. No representations are made about the suitability of this software 
 * for any purpose. It is provided "as is" without express or implied warranty.
 * See the GNU General Public License for more details.
 *
 * Documents produced by Doxygen are derivative works derived from the
 * input used in their production; they are not affected by this license.
 *
 */

#ifndef _HTMLDOCVISITOR_H
#define _HTMLDOCVISITOR_H

#include "docvisitor.h"
#include <qstack.h>
#include <qcstring.h>

class DocNode;
class QTextStream;
class CodeOutputInterface;
class QString;

/*! @brief Concrete visitor implementation for HTML output. */
class HtmlDocVisitor : public DocVisitor
{
  public:
    HtmlDocVisitor(QTextStream &t,CodeOutputInterface &ci,const char *langExt);
    
    //--------------------------------------
    // visitor functions for leaf nodes
    //--------------------------------------
    
    void visit(DocWord *);
    void visit(DocLinkedWord *);
    void visit(DocWhiteSpace *);
    void visit(DocSymbol *);
    void visit(DocURL *);
    void visit(DocLineBreak *);
    void visit(DocHorRuler *);
    void visit(DocStyleChange *);
    void visit(DocVerbatim *);
    void visit(DocAnchor *);
    void visit(DocInclude *);
    void visit(DocIncOperator *);
    void visit(DocFormula *);
    void visit(DocIndexEntry *);
    void visit(DocSimpleSectSep *);

    //--------------------------------------
    // visitor functions for compound nodes
    //--------------------------------------
    
    void visitPre(DocAutoList *);
    void visitPost(DocAutoList *);
    void visitPre(DocAutoListItem *);
    void visitPost(DocAutoListItem *);
    void visitPre(DocPara *) ;
    void visitPost(DocPara *);
    void visitPre(DocRoot *);
    void visitPost(DocRoot *);
    void visitPre(DocSimpleSect *);
    void visitPost(DocSimpleSect *);
    void visitPre(DocTitle *);
    void visitPost(DocTitle *);
    void visitPre(DocSimpleList *);
    void visitPost(DocSimpleList *);
    void visitPre(DocSimpleListItem *);
    void visitPost(DocSimpleListItem *);
    void visitPre(DocSection *);
    void visitPost(DocSection *);
    void visitPre(DocHtmlList *);
    void visitPost(DocHtmlList *) ;
    void visitPre(DocHtmlListItem *);
    void visitPost(DocHtmlListItem *);
    void visitPre(DocHtmlDescList *);
    void visitPost(DocHtmlDescList *);
    void visitPre(DocHtmlDescTitle *);
    void visitPost(DocHtmlDescTitle *);
    void visitPre(DocHtmlDescData *);
    void visitPost(DocHtmlDescData *);
    void visitPre(DocHtmlTable *);
    void visitPost(DocHtmlTable *);
    void visitPre(DocHtmlRow *);
    void visitPost(DocHtmlRow *) ;
    void visitPre(DocHtmlCell *);
    void visitPost(DocHtmlCell *);
    void visitPre(DocHtmlCaption *);
    void visitPost(DocHtmlCaption *);
    void visitPre(DocInternal *);
    void visitPost(DocInternal *);
    void visitPre(DocHRef *);
    void visitPost(DocHRef *);
    void visitPre(DocHtmlHeader *);
    void visitPost(DocHtmlHeader *);
    void visitPre(DocImage *);
    void visitPost(DocImage *);
    void visitPre(DocDotFile *);
    void visitPost(DocDotFile *);
    void visitPre(DocLink *);
    void visitPost(DocLink *);
    void visitPre(DocRef *);
    void visitPost(DocRef *);
    void visitPre(DocSecRefItem *);
    void visitPost(DocSecRefItem *);
    void visitPre(DocSecRefList *);
    void visitPost(DocSecRefList *);
    void visitPre(DocParamSect *);
    void visitPost(DocParamSect *);
    void visitPre(DocParamList *);
    void visitPost(DocParamList *);
    void visitPre(DocXRefItem *);
    void visitPost(DocXRefItem *);
    void visitPre(DocInternalRef *);
    void visitPost(DocInternalRef *);
    void visitPre(DocCopy *);
    void visitPost(DocCopy *);
    void visitPre(DocText *);
    void visitPost(DocText *);

  private:

    //--------------------------------------
    // helper functions 
    //--------------------------------------
    
    void filter(const char *str);
    void filterQuotedCdataAttr(const char* str);
    void startLink(const QString &ref,const QString &file,
                   const QString &relPath,const QString &anchor,
                   const QString &tooltip = QString::null);
    void endLink();
    void writeDotFile(const QString &fileName,const QString &relPath,const QString &context);
    void writeMscFile(const QString &fileName,const QString &relPath,const QString &context);

    void pushEnabled();
    void popEnabled();

    void forceEndParagraph(DocNode *n);
    void forceStartParagraph(DocNode *n);

    //--------------------------------------
    // state variables
    //--------------------------------------

    QTextStream &m_t;
    CodeOutputInterface &m_ci;
    bool m_insidePre;
    bool m_hide;
    QStack<bool> m_enabled;
    QCString m_langExt;
};

#endif