/*
 *	File:					Menu.c
 *	Description:	A set of functions to manipulate menus.
 *
 *	(C) 1994, Ketil Hunn
 *
 */

#ifndef	MENUFUNCTIONS_C
#define	MENUFUNCTIONS_C

__asm UBYTE *egFindMenuTitle(	register __a0 struct Menu *mymenu,
															register __d0 ULONG idcmp)
{
	register struct Menu			*menu;
	register struct MenuItem	*item, *sub;
	register BYTE							found=FALSE;
	UBYTE											*title=NULL;

#ifdef MYDEBUG_H
	DebugOut("egFindMenuNum");
#endif

	for(menu=mymenu; menu!=NULL & found==FALSE; menu=menu->NextMenu)
	{
		title=(UBYTE *)menu->MenuName;
		for(item=menu->FirstItem; item!=NULL; item=item->NextItem)
		{
			for(sub=item->SubItem; sub!=NULL & found==FALSE; sub=sub->NextItem)
				if(GTMENUITEM_USERDATA(sub)==(APTR)idcmp)
					found=TRUE;
			if(GTMENUITEM_USERDATA(item)==(APTR)idcmp)
				found=TRUE;
		}
	}
	return title;
}

__asm struct MenuItem *egFindMenuItem(register __a0 struct Menu *mymenu,
																			register __d0 ULONG idcmp)
{
	register struct Menu			*menu;
	register struct MenuItem	*item, *sub;

#ifdef MYDEBUG_H
	DebugOut("egFindMenuItem");
#endif

	for(menu=mymenu; menu!=NULL; menu=menu->NextMenu)
		for(item=menu->FirstItem; item!=NULL; item=item->NextItem)
		{
			for(sub=item->SubItem; sub!=NULL; sub=sub->NextItem)
				if(GTMENUITEM_USERDATA(sub)==(APTR)idcmp)
					return sub;
			if(GTMENUITEM_USERDATA(item)==(APTR)idcmp)
				return item;
		}
	return NULL;
}

__asm __saveds BOOL egIsMenuItemChecked(register __a0 struct Menu *menu,
																				register __d0 ULONG idcmp)
{
	register struct MenuItem	*item=egFindMenuItem(menu, idcmp);

#ifdef MYDEBUG_H
	DebugOut("egIsMenu_ItemChecked");
#endif

	if(item)
		if(ISBITSET(item->Flags, CHECKED))
			return TRUE;
	return FALSE;
}

__asm __saveds void egCheckMenuItem(register __a0 struct Window	*window,
																		register __a1 struct Menu		*menu,
																		register __d0 ULONG					idcmp,
																		register __d1 BOOL					check)
{
	register struct MenuItem	*item=egFindMenuItem(menu, idcmp);

#ifdef MYDEBUG_H
	DebugOut("egCheckMenuItem");
#endif

	if(window!=NULL)
		if(item)
		{
			ClearMenuStrip(window);
			IFTRUESETBIT(check, item->Flags, CHECKED);
			ResetMenuStrip(window, menu);
		}
}

__asm __saveds void egDisableMenuItem(register __a0 struct Window	*window,
																			register __a1 struct Menu		*menu,
																			register __d0 ULONG					idcmp,
																			register __d1 BOOL					flag)
{
	register struct MenuItem	*item=egFindMenuItem(menu, idcmp);

#ifdef MYDEBUG_H
	DebugOut("egDisableMenuItem");
#endif

	if(window!=NULL)
		if(item)
		{
			ClearMenuStrip(window);
			IFFALSESETBIT(flag, item->Flags, NM_ITEMDISABLED);
			ResetMenuStrip(window, menu);
		}
}

__asm __saveds void egSetMenuItem(register __a0 struct NewMenu	*menuitem,
																	register __d0 UBYTE						type,
																	register __a1 STRPTR					label,
																	register __d1 UWORD						flags,
																	register __d2 LONG						exclude,
																	register __a2 APTR						userdata)
{
	if(label==NM_BARLABEL)
	{
		menuitem->nm_Label	=label;
		menuitem->nm_CommKey=NULL;
	}
	else if(*label!=' ' & *(label+1)=='\0')
	{
		menuitem->nm_Label	=label+2;
		menuitem->nm_CommKey=label;
	}
	else
	{
		menuitem->nm_Label	=label;
		menuitem->nm_CommKey=NULL;
	}
	menuitem->nm_Type					=type;
	menuitem->nm_Flags				=flags;
	menuitem->nm_MutualExclude=exclude;
	menuitem->nm_UserData			=userdata;
}					

#endif