infoview.h

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/* 
 *      HT Editor
 *      infoview.h
 *
 *      Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      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.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __INFOVIEW_H__
#define __INFOVIEW_H__

#include "textedit.h"
#include "textfile.h"

#define MAGIC_HT_HELP "$$HTHELP"

/*
 *      CLASS info_node
 */

class info_node: public Object {
public:
        FILEOFS start;
        UINT len;
        ht_tree *xrefs;
        
        info_node(FILEOFS start);
        ~info_node();
};

/*
 *      CLASS ht_info_lexer
 */

class ht_info_lexer: public ht_syntax_lexer {
public:
        ht_tree *xrefs;
        UINT cx, cy;
        ht_view *pal_from;
        
                        void init(ht_view *pal_from);
/* overwritten */
        virtual vcp getcolor_syntax(UINT pal_index);
        virtual lexer_state getinitstate();
        virtual lexer_token geterrortoken();
        virtual char *getname();
        virtual lexer_token gettoken(void *buf, UINT buflen, text_pos p, bool start_of_line, lexer_state *ret_state, UINT *ret_len);
        virtual vcp gettoken_color(lexer_token t);
/* new */
                        void set_xrefs(ht_tree *xrefs);
                        void set_cursor(UINT cx, UINT cy);
};

/*
 *      CLASS ht_info_textfile
 */
 
class ht_info_textfile: public ht_ltextfile {
protected:
        UINT start, end;

        virtual ht_ltextfile_line *fetch_line(UINT line);
public:
                        void    init(ht_streamfile *streamfile, bool own_streamfile, ht_syntax_lexer *lexer);
        virtual void done();
/* overwritten */
        virtual UINT linecount();
/* new */       
                        void set_node(UINT ofs, UINT len);
};

/*
 *      CLASS ht_info_viewer
 */

class ht_info_viewer: public ht_text_viewer {
protected:
        char *cwd;
        char *file;
        char *node;
        ht_tree *xrefs;
        ht_list *history;

                        int find_node(char *infofile, char *node);
                        ht_tree *get_xrefs();
                        bool igotonode(char *file, char *node, bool add2hist);
                        UINT readfile(char *fn, char **text);
public:
                        void init(bounds *b);
        virtual void done();
/* overwritten */
        virtual void draw();
        virtual char *defaultpalette();
        virtual void get_pindicator_str(char *buf);
        virtual void handlemsg(htmsg *msg);
/* new */       
        virtual bool gotonode(char *file, char *node);
};

#endif /* __TEXTEDIT_H__ */

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