/*	Public domain	*/

#ifndef _AGAR_WIDGET_CONSOLE_H_
#define _AGAR_WIDGET_CONSOLE_H_

#include <agar/gui/widget.h>
#include <agar/gui/scrollbar.h>
#include <agar/gui/text.h>

#include <agar/gui/begin.h>

struct ag_console;
struct ag_popup_menu;

/* TODO: timestamps, markup */
typedef struct ag_console_line {
	char *_Nonnull text;    /* Line text */
	AG_Size len;            /* Size in bytes excluding NUL */
	int surface[2];         /* Cached surfaces (0=not selected; 1=selected) */
	AG_Color c;             /* Alternate text color */

	void *_Nullable p;                        /* User pointer */
	struct ag_console *_Nonnull cons;         /* Back pointer to console */
	struct ag_console_line *_Nullable parent; /* Parent line for multi-line groups */
} AG_ConsoleLine;

typedef struct ag_console_file {
	Uint flags;
#define AG_CONSOLE_FILE_BINARY     0x01  /* Display binary in hex dump format */
#define AG_CONSOLE_FILE_LEAVE_OPEN 0x02  /* Don't close FILE* or fd on detach */
	int fd;				 /* File descriptor */
	char *_Nullable label;		 /* Label (e.g., filename or id) */
	void *pFILE;			 /* FILE * pointer */
	AG_Offset offs;			 /* Current file offset */
	AG_OFFSET_PADDING(_pad);
	AG_Color *_Nullable color;	 /* Alternate color */
	const AG_NewlineFormat *newline; /* Newline encoding */
	AG_TAILQ_ENTRY(ag_console_file) files;
} AG_ConsoleFile;

typedef struct ag_console {
	struct ag_widget wid;           /* AG_Widget -> AG_Console */

	Uint flags;
#define AG_CONSOLE_HFILL        0x01             /* Fill available width */
#define AG_CONSOLE_VFILL        0x02             /* Fill available height */
#define AG_CONSOLE_NOAUTOSCROLL 0x04             /* Disable auto-scrolling */
#define AG_CONSOLE_NOPOPUP      0x08             /* Disable popup menus */
#define AG_CONSOLE_SELECTING    0x10             /* Selection is in progress */
#define AG_CONSOLE_BEGIN_SELECT 0x20             /* Selection initiation flag */
#define AG_CONSOLE_EXPAND       (AG_CONSOLE_HFILL | AG_CONSOLE_VFILL)
	int lineScrollAmount;                    /* Line scrolling increment */
	int lineskip;                            /* Space between lines */
	int xOffs;                               /* Horiz display offset (px) */

	AG_ConsoleLine *_Nullable *_Nonnull lines;  /* Lines in buffer */
	Uint                               nLines;  /* Line count */

	int wMax;                                /* Width of widest line (px) */
	Uint rOffs;                              /* Row display offset */
	Uint rVisible;                           /* Visible line count */
	AG_Scrollbar *_Nonnull vBar;             /* Vert hideable scrollbar */
	AG_Scrollbar *_Nonnull hBar;             /* Horiz hideable scrollbar */
	AG_Rect r;                               /* View area */
	Uint *_Nullable scrollTo;                /* Scrolling request */
	int pos, sel;                            /* Position and selection */
	int gcCounter;                           /* Garbage collection counter */
	int gcTrigger;                           /* Garbage collection threshold */
	struct ag_popup_menu *_Nullable pm;      /* Active popup menu */
	AG_Timer beginSelectTo;	                 /* Timer for double-click */
	AG_TAILQ_HEAD_(ag_console_file) files;   /* Files being monitored */
} AG_Console;

#define   AGCONSOLE(obj)    ((AG_Console *)(obj))
#define  AGcCONSOLE(obj)    ((const AG_Console *)(obj))
#define  AG_CONSOLE_ISA(o)  (((AGOBJECT(o)->cid & 0xff000000) >> 24) == 0x0D)
#define  AG_CONSOLE_SELF()    AGCONSOLE(  AG_OBJECT(0,        "AG_Widget:AG_Console:*") )
#define  AG_CONSOLE_PTR(n)    AGCONSOLE(  AG_OBJECT((n),      "AG_Widget:AG_Console:*") )
#define  AG_CONSOLE_NAMED(n)  AGCONSOLE(  AG_OBJECT_NAMED((n),"AG_Widget:AG_Console:*") )
#define AG_cCONSOLE_SELF()   AGcCONSOLE( AG_cOBJECT(0,        "AG_Widget:AG_Console:*") )
#define AG_cCONSOLE_PTR(n)   AGcCONSOLE( AG_cOBJECT((n),      "AG_Widget:AG_Console:*") )
#define AG_cCONSOLE_NAMED(n) AGcCONSOLE( AG_cOBJECT_NAMED((n),"AG_Widget:AG_Console:*") )

__BEGIN_DECLS
extern AG_WidgetClass agConsoleClass;

AG_Console *_Nonnull AG_ConsoleNew(void *_Nullable, Uint);

AG_ConsoleLine *_Nonnull AG_ConsoleAppendLine(AG_Console *_Nonnull,
                                              const char *_Nullable);
AG_ConsoleLine *_Nonnull AG_ConsoleMsgS(AG_Console *_Nonnull, const char *_Nonnull);
AG_ConsoleLine *_Nonnull AG_ConsoleMsg(AG_Console *_Nonnull, const char *_Nonnull, ...)
                                      FORMAT_ATTRIBUTE(printf,2,3);

void AG_ConsoleBinary(AG_Console *_Nonnull, const void *_Nonnull, AG_Size,
                      const char *_Nullable, const char *_Nullable);

void AG_ConsoleMsgEdit(AG_ConsoleLine *_Nonnull, const char *_Nonnull);
void AG_ConsoleMsgCatS(AG_ConsoleLine *_Nonnull, const char *_Nonnull);
void AG_ConsoleMsgPtr(AG_ConsoleLine *_Nonnull, void *_Nullable);
void AG_ConsoleMsgColor(AG_ConsoleLine *_Nonnull, const AG_Color *_Nonnull);
void AG_ConsoleClear(AG_Console *_Nonnull);

char *_Nullable AG_ConsoleExportText(const AG_Console *_Nonnull, enum ag_newline_type);
char *_Nullable AG_ConsoleExportBuffer(const AG_Console *_Nonnull, enum ag_newline_type);

AG_ConsoleFile *AG_ConsoleOpenFile(AG_Console *_Nonnull, const char *_Nullable,
                                   const char *_Nullable, enum ag_newline_type,
				   Uint);
AG_ConsoleFile *AG_ConsoleOpenFD(AG_Console *_Nonnull, const char *_Nullable,
                                     int, enum ag_newline_type, Uint);
AG_ConsoleFile *AG_ConsoleOpenStream(AG_Console *_Nonnull, const char *_Nullable,
                                     void *_Nullable, enum ag_newline_type, Uint);
void            AG_ConsoleClose(AG_Console *_Nonnull, AG_ConsoleFile *_Nonnull);

#ifdef AG_LEGACY
# define AG_ConsoleSetFont(cons,font) AG_SetFont((cons),(font))
void AG_ConsoleSetPadding(AG_Console *_Nonnull, int)
                         DEPRECATED_ATTRIBUTE;
#endif
__END_DECLS

#include <agar/gui/close.h>
#endif /* _AGAR_WIDGET_CONSOLE_H_ */