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#ifndef EDITOR_H
#define EDITOR_H
#include <curses.h>
#include <stddef.h>
#include <stdbool.h>
#include "window.h"
#include "register.h"
#include "syntax.h"
typedef struct Editor Editor;
typedef struct EditorWin EditorWin;
struct EditorWin {
Editor *editor; /* editor instance to which this window belongs */
Text *text; /* underlying text management */
Win *win; /* vis window for the text area */
WINDOW *statuswin; /* curses window for the statusbar */
int width, height; /* window size including the statusbar */
EditorWin *prev, *next; /* neighbouring windows */
};
typedef struct {
EditorWin *win; /* 1-line height editor window used for the prompt */
EditorWin *editor; /* active editor window before prompt is shown */
char *title; /* title displayed to the left of the prompt */
WINDOW *titlewin; /* the curses window holding the prompt title */
bool active; /* whether the prompt is currently shown or not */
} Prompt;
typedef void (*editor_statusbar_t)(WINDOW *win, bool active, const char *filename, size_t line, size_t col);
enum Reg {
REG_a,
REG_b,
REG_c,
REG_d,
REG_e,
REG_f,
REG_g,
REG_h,
REG_i,
REG_j,
REG_k,
REG_l,
REG_m,
REG_n,
REG_o,
REG_p,
REG_q,
REG_r,
REG_s,
REG_t,
REG_u,
REG_v,
REG_w,
REG_x,
REG_y,
REG_z,
REG_DEFAULT,
REG_LAST,
};
enum Mark {
MARK_a,
MARK_b,
MARK_c,
MARK_d,
MARK_e,
MARK_f,
MARK_g,
MARK_h,
MARK_i,
MARK_j,
MARK_k,
MARK_l,
MARK_m,
MARK_n,
MARK_o,
MARK_p,
MARK_q,
MARK_r,
MARK_s,
MARK_t,
MARK_u,
MARK_v,
MARK_w,
MARK_x,
MARK_y,
MARK_z,
};
struct Editor {
int width, height; /* terminal size, available for all windows */
EditorWin *windows; /* list of windows */
EditorWin *win; /* currently active window */
Syntax *syntaxes; /* NULL terminated array of syntax definitions */
Register registers[REG_LAST]; /* register used for copy and paste */
Prompt *prompt; /* used to get user input */
Regex *search_pattern; /* last used search pattern */
void (*windows_arrange)(Editor*); /* current layout which places the windows */
editor_statusbar_t statusbar; /* configurable user hook to draw statusbar */
bool running; /* (TODO move elsewhere?) */
};
Editor *editor_new(int width, int height);
void editor_free(Editor*);
void editor_resize(Editor*, int width, int height);
void editor_draw(Editor*);
void editor_update(Editor*);
/* these function operate on the currently focused window but make sure
* that all windows which show the affected region are redrawn too. */
void editor_insert_key(Editor*, const char *c, size_t len);
void editor_replace_key(Editor*, const char *c, size_t len);
void editor_backspace_key(Editor*);
void editor_delete_key(Editor*);
void editor_insert(Editor*, size_t pos, const char *data, size_t len);
void editor_delete(Editor*, size_t pos, size_t len);
/* load a set of syntax highlighting definitions which will be associated
* to the underlying window based on the file type loaded.
*
* both *syntaxes and *colors must point to a NULL terminated array.
* it the i-th syntax definition does not specifiy a fore ground color
* then the i-th entry of the color array will be used instead
*/
bool editor_syntax_load(Editor*, Syntax *syntaxes, Color *colors);
void editor_syntax_unload(Editor*);
/* creates a new window, and loads the given file. if filename is NULL
* an unamed / empty buffer is created */
bool editor_window_new(Editor*, const char *filename);
void editor_window_close(Editor *vis);
/* if filename is non NULL it is equivalent to window_new call above.
* if however filename is NULL a new window is created and linked to the
* same underlying text as the currently selected one. changes will
* thus be visible in both windows. */
void editor_window_split(Editor*, const char *filename);
void editor_window_vsplit(Editor*, const char *filename);
/* focus the next / previous window */
void editor_window_next(Editor*);
void editor_window_prev(Editor*);
/* return the content of the command prompt in a malloc(3)-ed string
* which the call site has to free. */
char *editor_prompt_get(Editor *vis);
/* replace the current command line content with the one given */
void editor_prompt_set(Editor *vis, const char *line);
void editor_prompt_show(Editor *vis, const char *title);
void editor_prompt_hide(Editor *vis);
void editor_statusbar_set(Editor*, editor_statusbar_t);
// TODO cleanup this mess only 1 function should suffice? move perform
// lazy initialization on first call
/* library initialization code, should be run at startup */
void editor_init(void);
short editor_color_reserve(short fg, short bg);
/* look up a curses color pair for the given combination of fore and
* background color */
short editor_color_get(short fg, short bg);
#endif
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