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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <thread.h>
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#include <mouse.h>
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#include <keyboard.h>
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#include <control.h>
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typedef struct Radio Radio;
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struct Radio
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{
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	Control;
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	int		value;
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	int		lastbut;
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	Control	**buttons;
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	int		nbuttons;
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	char		*eventstr;
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};
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enum{
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	EAdd,
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	EButton,
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	EFocus,
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	EFormat,
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	EHide,
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	ERect,
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	EReveal,
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	EShow,
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	ESize,
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	EValue,
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};
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static char *cmds[] = {
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	[EAdd] =		"add",
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	[EButton] =	"button",
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	[EFocus] = 	"focus",
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	[EFormat] = 	"format",
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	[EHide] =		"hide",
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	[ERect] =		"rect",
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	[EReveal] =	"reveal",
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	[EShow] =		"show",
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	[ESize] =		"size",
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	[EValue] =		"value",
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	nil
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};
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static void	radioshow(Radio*);
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static void	radiofree(Radio*);
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static void
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radiomouse(Control *c, Mouse *m)
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{
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	Radio *r;
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	int i;
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	r = (Radio*)c;
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	for(i=0; i<r->nbuttons; i++)
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		if(ptinrect(m->xy, r->buttons[i]->rect) && r->buttons[i]->mouse){
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			(r->buttons[i]->mouse)(r->buttons[i], m);
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			break;
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		}
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}
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static void
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radiofree(Radio*)
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{
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}
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static void
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radioshow(Radio *r)
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{
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	int i;
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	if (r->hidden)
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		return;
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	for(i=0; i<r->nbuttons; i++){
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		_ctlprint(r->buttons[i], "value %d", (r->value==i));
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		_ctlprint(r->buttons[i], "show");
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	}
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}
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static void
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radioctl(Control *c, CParse *cp)
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{
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	int cmd, i;
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	Rectangle rect;
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	Radio *r;
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	char fmt[256];
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	r = (Radio*)c;
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	cmd = _ctllookup(cp->args[0], cmds, nelem(cmds));
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	switch(cmd){
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	default:
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		ctlerror("%q: unrecognized message '%s'", r->name, cp->str);
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		break;
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	case EAdd:
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		_ctlargcount(r, cp, 2);
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		c = controlcalled(cp->args[1]);
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		if(c == nil)
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			ctlerror("%q: can't add %s: %r", r->name, cp->args[1]);
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		snprint(fmt, sizeof fmt, "%%q: %q button %%d", r->name);
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		_ctlprint(c, "format %q", fmt);
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		controlwire(c, "event", c->controlset->ctl);
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		r->buttons = ctlrealloc(r->buttons, (r->nbuttons+1)*sizeof(Control*));
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		r->buttons[r->nbuttons] = c;
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		r->nbuttons++;
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		r->value = -1;
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		radioshow(r);
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		break;
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	case EButton:
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		if (cp->sender == nil)
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			ctlerror("%q: senderless buttonevent: %q", r->name, cp->str);
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		c = controlcalled(cp->sender);
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		for(i=0; i<r->nbuttons; i++)
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			if (c == r->buttons[i])
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				break;
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		if (i == r->nbuttons)
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			ctlerror("%q: not my event: %q", r->name, cp->str);
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		if(cp->iargs[1] == 0){
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			/* button was turned off; turn it back on */
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			_ctlprint(c, "value 1");
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		}else{
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			r->value = i;
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			chanprint(r->event, r->format, r->name, i);
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			radioshow(r);
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		}
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		break;
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	case EFormat:
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		_ctlargcount(r, cp, 2);
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		r->format = ctlstrdup(cp->args[1]);
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		break;
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	case EHide:
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		_ctlargcount(r, cp, 1);
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		r->hidden = 1;
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		break;
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	case EFocus:
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		/* ignore focus change */
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		break;
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	case ERect:
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		_ctlargcount(r, cp, 5);
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		rect.min.x = cp->iargs[1];
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		rect.min.y = cp->iargs[2];
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		rect.max.x = cp->iargs[3];
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		rect.max.y = cp->iargs[4];
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		r->rect = rect;
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		break;
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	case EReveal:
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		_ctlargcount(r, cp, 1);
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		r->hidden = 0;
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		radioshow(r);
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		break;
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	case EShow:
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		_ctlargcount(r, cp, 1);
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		radioshow(r);
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		break;
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	case ESize:
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		if (cp->nargs == 3)
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			rect.max = Pt(0x7fffffff, 0x7fffffff);
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		else{
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			_ctlargcount(r, cp, 5);
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			rect.max.x = cp->iargs[3];
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			rect.max.y = cp->iargs[4];
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		}
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		rect.min.x = cp->iargs[1];
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		rect.min.y = cp->iargs[2];
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		if(rect.min.x<=0 || rect.min.y<=0 || rect.max.x<=0 || rect.max.y<=0 || rect.max.x < rect.min.x || rect.max.y < rect.min.y)
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			ctlerror("%q: bad sizes: %s", r->name, cp->str);
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		r->size.min = rect.min;
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		r->size.max = rect.max;
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		break;
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	case EValue:
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		_ctlargcount(r, cp, 2);
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		r->value = cp->iargs[1];
176 
		radioshow(r);
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		break;
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	}
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}
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Control*
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createradiobutton(Controlset *cs, char *name)
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{
184 
	Radio *r;
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186 
	r = (Radio*)_createctl(cs, "label", sizeof(Radio), name);
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	r->format = ctlstrdup("%q: value %d");
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	r->value = -1;	/* nobody set at first */
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	r->mouse = radiomouse;
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	r->ctl = radioctl;
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	return (Control*)r;
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}