/*  *	HT Editor *	textedit.h * *	Copyright (C) 1999-2002 Sebastian Biallas (sb@biallas.net) *	Copyright (C) 1999-2002 Stefan Weyergraf * *	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 __TEXTEDIT_H__#define __TEXTEDIT_H__#include "htobj.h"#include "textfile.h"#include "htformat.h"#define TEXTEDITOPT_NULL			0#define TEXTEDITOPT_INPUTTABS		1#define TEXTEDITOPT_UNDO			2struct text_viewer_pos {	uint line;	uint pofs;};union text_search_pos {	FileOfs offset;};class ht_text_editor;#define ATOM_HT_UNDO_DATA_INSERT	MAGIC32("UND\x01")#define ATOM_HT_UNDO_DATA_OVERWRITE	MAGIC32("UND\x02")#define ATOM_HT_UNDO_DATA_DELETE	MAGIC32("UND\x03")#define ATOM_HT_UNDO_DATA_DELETE2	MAGIC32("UND\x04")#define ATOM_HT_UNDO_DATA_SPLIT_LINE	MAGIC32("UND\x05")#define ATOM_HT_UNDO_DATA_JOIN_LINE	MAGIC32("UND\x06")#define ATOM_HT_UNDO_DATA_INSERT_BLOCK	MAGIC32("UND\x07")#define ATOM_HT_UNDO_DATA_DELETE_BLOCK	MAGIC32("UND\x08")/* *	CLASS ht_undo_data */class ht_undo_data: public Object {public:	virtual bool combine(ht_undo_data *ud);	virtual uint getsize() = 0;	virtual void gettext(char *text, uint maxlen) = 0;	virtual void apply(ht_text_editor *te) = 0;	virtual void unapply(ht_text_editor *te, bool *goto_only) = 0;};/* *	CLASS ht_undo_data_delete_string */class ht_undo_data_delete_string: public ht_undo_data {	text_viewer_pos apos;           /* cursor before */	text_viewer_pos bpos;           /* cursor after */	void *string;	uint len;public:	ht_undo_data_delete_string(text_viewer_pos *apos, text_viewer_pos *bpos, void *string, uint len);	~ht_undo_data_delete_string();	virtual bool combine(ht_undo_data *ud);	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_delete_string2 */class ht_undo_data_delete_string2: public ht_undo_data {	text_viewer_pos apos;           /* cursor before */	text_viewer_pos bpos;           /* cursor after */	void *string;	uint len;public:	ht_undo_data_delete_string2(text_viewer_pos *apos, text_viewer_pos *bpos, void *string, uint len);	~ht_undo_data_delete_string2();	virtual bool combine(ht_undo_data *ud);	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_insert_string */class ht_undo_data_insert_string: public ht_undo_data {	text_viewer_pos apos;	text_viewer_pos bpos;	text_viewer_pos cpos;	void *string;	uint len;public:	ht_undo_data_insert_string(text_viewer_pos *apos, text_viewer_pos *bpos, void *string, uint len);	~ht_undo_data_insert_string();	virtual bool combine(ht_undo_data *ud);	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_overwrite_string */class ht_undo_data_overwrite_string: public ht_undo_data {	text_viewer_pos apos;	text_viewer_pos bpos;	text_viewer_pos cpos;	void *string;	uint len;	void *string2;	uint len2;public:	ht_undo_data_overwrite_string(text_viewer_pos *apos, text_viewer_pos *bpos, void *string, uint len, void *string2, uint len2);	~ht_undo_data_overwrite_string();	virtual bool combine(ht_undo_data *ud);	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_split_line */class ht_undo_data_split_line: public ht_undo_data {	text_viewer_pos apos;	text_viewer_pos bpos;	uint indent;public:	ht_undo_data_split_line(text_viewer_pos *apos, text_viewer_pos *bpos, uint Indent);	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_join_line */class ht_undo_data_join_line: public ht_undo_data {	text_viewer_pos apos;	text_viewer_pos bpos;     	text_viewer_pos cpos;public:	ht_undo_data_join_line(text_viewer_pos *apos, text_viewer_pos *bpos);	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_insert_block */class ht_undo_data_insert_block: public ht_undo_data {	text_viewer_pos apos;	text_viewer_pos bpos;     	text_viewer_pos cpos;	text_viewer_pos sel_start;	text_viewer_pos sel_end;	void *block;	uint size;public:	ht_undo_data_insert_block(text_viewer_pos *apos, text_viewer_pos *bpos, void *block, uint size);	~ht_undo_data_insert_block();	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_undo_data_delete_block */class ht_undo_data_delete_block: public ht_undo_data {	text_viewer_pos apos;	text_viewer_pos bpos;     	text_viewer_pos cpos;	text_viewer_pos sel_start;	text_viewer_pos sel_end;	void *block;	uint size;public:	ht_undo_data_delete_block(text_viewer_pos *apos, text_viewer_pos *bpos, text_viewer_pos *Sel_start, text_viewer_pos *Sel_end);	~ht_undo_data_delete_block();	virtual uint getsize();	virtual void gettext(char *text, uint maxlen);	virtual ObjectID getObjectID() const;	virtual void apply(ht_text_editor *te);	virtual void unapply(ht_text_editor *te, bool *goto_only);};/* *	CLASS ht_text_editor_undo */ class ht_text_editor_undo: public Array {public:	uint size, max_size;	int clean_state;	int current_position;	bool goto_state;public:	ht_text_editor_undo(uint max_undo_size);	void insert_undo(ht_text_editor *te, ht_undo_data *undo);	bool is_clean();	bool is_clean(int i);	int get_current_position();	void mark_clean();	void undo(ht_text_editor *te, bool place_cursor_first);	void redo(ht_text_editor *te);};/* *	CLASS ht_text_viewer */#define cmd_text_viewer_goto				HT_COMMAND(601)#define cmd_text_viewer_change_highlight     HT_COMMAND(602)#define cmd_text_editor_undo			HT_COMMAND(620)#define cmd_text_editor_redo			HT_COMMAND(621)#define cmd_text_editor_protocol		HT_COMMAND(622)#define cmd_text_editor_delete_line		HT_COMMAND(623)class ht_text_viewer: public ht_view {friend class ht_undo_data;friend class ht_undo_data_delete_string;friend class ht_undo_data_delete_string2;friend class ht_undo_data_insert_string;friend class ht_undo_data_overwrite_string;friend class ht_undo_data_split_line;friend class ht_undo_data_join_line;friend class ht_undo_data_insert_block;friend class ht_undo_data_delete_block;protected:	ht_textfile *textfile;	bool own_textfile;	Container *lexers;		ht_syntax_lexer *lexer;	bool own_lexer;	uint cursorx, cursory;	text_viewer_pos sel_start, sel_end;	uint top_line;	uint xofs;	bool selectcursor;	bool selectmode;	text_viewer_pos selectstart;	char *EOL_string;	char *EOF_string;	bool show_EOL;	bool show_EOF;	bool highlight_wrap;	uint	tab_size;	ht_search_request *last_search_request;	FileOfs last_search_end_ofs;/* new */			int buf_lprint0(int x, int y, int c, int l, char *text);			uint char_vsize(char c, uint x);			void clipboard_copy_cmd();			bool continue_search();	virtual	vcp  get_bgcolor();			void make_pos_physical(text_viewer_pos *p);			void normalize_selection();			uint physical_cursorx();			void popup_change_highlight();			void render_meta(uint x, uint y, text_viewer_pos *pos, vcp color);			void render_str(int x, int y, vcp color, text_viewer_pos *pos, uint len, char *str, bool multi);			void render_str_color(vcp *color, text_viewer_pos *pos);			ht_search_result *search(ht_search_request *request, text_search_pos *start, text_search_pos *end);			bool show_search_result(ht_search_result *result);public:			void init(Bounds *b, bool own_textfile, ht_textfile *textfile, Container *lexers);	virtual	void done();/* overwritten */	virtual	void config_changed();	virtual	void draw();	virtual	void handlemsg(htmsg *msg);	virtual	void resize(int rw, int rh);/* new */	virtual	const char *func(uint i, bool execute);			uint get_line_length(uint line);			uint get_line_vlength(uint line);			uint get_line_indent(uint line);			void get_selection(text_viewer_pos *start, text_viewer_pos *end);			bool goto_line(uint line);	/* position indicator string */	virtual	int get_pindicator_str(char *buf, int max_len);	/* scrollbar pos */	virtual	bool get_hscrollbar_pos(int *pstart, int *psize);	virtual	bool get_vscrollbar_pos(int *pstart, int *psize);	/* cursor */	virtual	CursorMode get_cursor_mode();	virtual	void get_cursor_pos(text_viewer_pos *cursor);	/* conversions */	virtual	bool pos_to_offset(text_viewer_pos *pos, FileOfs *ofs);	/**/			ht_syntax_lexer *get_lexer();			int ppos_str(char *buf, uint bufsize, text_viewer_pos *ppos);			void set_lexer(ht_syntax_lexer *l, bool own_l);			void set_textfile(ht_textfile *t, bool own_t);			ht_textfile *get_textfile();/**/			uint cursor_up(uint n);			uint cursor_down(uint n);			uint cursor_left(uint n);			uint cursor_right(uint n);			void cursor_home();			void cursor_end();			void cursor_vput(uint vx);			void cursor_pput(uint px);			void cursor_set(text_viewer_pos *pos);			uint scroll_up(uint n);			uint scroll_down(uint n);			uint scroll_left(uint n);			uint scroll_right(uint n);			void select_add(text_viewer_pos *from, text_viewer_pos *to);			void select_clear();			void select_end();			void select_set(text_viewer_pos *from, text_viewer_pos *to);			void select_start();};/* *	CLASS ht_text_editor */class ht_text_editor: public ht_text_viewer {protected:	uint edit_options;	ht_text_editor_undo *undo_list;	bool	auto_indent;	bool overwrite_mode;	/* new */			void clipboard_cut_cmd();			void clipboard_delete_cmd();			void clipboard_paste_cmd();	virtual	vcp  get_bgcolor();			bool save();public:			void init(Bounds *b, bool own_textfile, ht_textfile *textfile, Container *lexers, uint edit_options);	virtual	void done();/* overwritten */	virtual	void config_changed();	virtual	const char *func(uint i, bool execute);	virtual	void handlemsg(htmsg *msg);	/* position indicator string */	virtual	int get_pindicator_str(char *buf, int max_len);	/* cursor mode */	virtual	CursorMode get_cursor_mode();/* new */			bool concat_lines(uint a);			void delete_chars(uint line, uint ofs, uint count);			void delete_lines(uint line, uint count);			void indent(uint line, uint start, uint size);			void insert_chars(uint line, uint ofs, void *chars, uint len);			void insert_lines(uint line, uint count);			void split_line(uint a, uint pos);			void unindent(uint line, uint start, uint size);	/* undo/redo */			void textoperation_apply(ht_undo_data *ud);			void redo();			void show_protocol();			void undo(bool place_cursor_first);};extern int text_viewer_pos_compare(text_viewer_pos *a, text_viewer_pos *b);#endif /* __TEXTEDIT_H__ */