/* $Xorg: indicators.c,v 1.3 2000/08/17 19:54:31 cpqbld Exp $ */
/************************************************************
 Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.

 Permission to use, copy, modify, and distribute this
 software and its documentation for any purpose and without
 fee is hereby granted, provided that the above copyright
 notice appear in all copies and that both that copyright
 notice and this permission notice appear in supporting
 documentation, and that the name of Silicon Graphics not be 
 used in advertising or publicity pertaining to distribution 
 of the software without specific prior written permission.
 Silicon Graphics makes no representation about the suitability 
 of this software for any purpose. It is provided "as is"
 without any express or implied warranty.
 
 SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
 AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
 GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 
 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 
 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
 THE USE OR PERFORMANCE OF THIS SOFTWARE.

 ********************************************************/
/* $XFree86: xc/programs/xkbcomp/indicators.c,v 1.4 2001/01/17 23:45:43 dawes Exp $ */

#include "xkbcomp.h"
#include "misc.h"
#include "tokens.h"
#include "expr.h"
#include "vmod.h"
#include "indicators.h"

/***====================================================================***/

#define	ReportIndicatorBadType(d,l,f,w)	\
		ReportBadType("indicator map",(f),\
		      	XkbAtomText((d),(l)->name,XkbMessage),(w))
#define	ReportIndicatorNotArray(d,l,f)	\
		ReportNotArray("indicator map",(f),\
			XkbAtomText((d),(l)->name,XkbMessage))

/***====================================================================***/

void
#if NeedFunctionPrototypes
ClearIndicatorMapInfo(Display *dpy,LEDInfo *info)
#else
ClearIndicatorMapInfo(dpy,info)
    Display *		dpy;
    LEDInfo *	info;
#endif
{
    info->name= 	XkbInternAtom(dpy,"default",False);
    info->indicator=	_LED_NotBound;
    info->flags= info->which_mods= info->real_mods= 0;
    info->vmods= 0;
    info->which_groups= info->groups= 0;
    info->ctrls= 0;
    return;
}

LEDInfo *
#if NeedFunctionPrototypes
AddIndicatorMap(LEDInfo *oldLEDs,LEDInfo *new)
#else
AddIndicatorMap(oldLEDs,new)
    LEDInfo *	oldLEDs;
    LEDInfo *	new;
#endif
{
LEDInfo *old,*last;
unsigned collide;

    last= NULL;
    for (old=oldLEDs;old!=NULL;old=(LEDInfo *)old->defs.next) {
	if (old->name==new->name) {
	    if ((old->real_mods==new->real_mods)&&
		(old->vmods==new->vmods)&&
		(old->groups==new->groups)&&
		(old->ctrls==new->ctrls)&&
		(old->which_mods==new->which_mods)&&
		(old->which_groups==new->which_groups)) {
		old->defs.defined|= new->defs.defined;
		return oldLEDs;
	    }
	    if (new->defs.merge==MergeReplace) {
		CommonInfo *next= old->defs.next;
		if (((old->defs.fileID==new->defs.fileID)&&(warningLevel>0))||
		   					   (warningLevel>9)) {
		    WARN1("Map for indicator %s redefined\n",
				  XkbAtomText(NULL,old->name,XkbMessage));
		    ACTION("Earlier definition ignored\n");
		}
		*old= *new;
		old->defs.next= next;
		return oldLEDs;
	    }
	    collide= 0;
	    if (UseNewField(_LED_Index,&old->defs,&new->defs,&collide)) {
		old->indicator= new->indicator;
		old->defs.defined|= _LED_Index;
	    }
	    if (UseNewField(_LED_Mods,&old->defs,&new->defs,&collide)) {
		old->which_mods= new->which_mods;
		old->real_mods= new->real_mods;
		old->vmods= new->vmods;
		old->defs.defined|= _LED_Mods;
	    }
	    if (UseNewField(_LED_Groups,&old->defs,&new->defs,&collide)) {
		old->which_groups= new->which_groups;
		old->groups= new->groups;
		old->defs.defined|= _LED_Groups;
	    }
	    if (UseNewField(_LED_Ctrls,&old->defs,&new->defs,&collide)) {
		old->ctrls= new->ctrls;
		old->defs.defined|= _LED_Ctrls;
	    }
	    if (UseNewField(_LED_Explicit,&old->defs,&new->defs,&collide)) {
		old->flags&= ~XkbIM_NoExplicit;
		old->flags|= (new->flags&XkbIM_NoExplicit);
		old->defs.defined|= _LED_Explicit;
	    }
	    if (UseNewField(_LED_Automatic,&old->defs,&new->defs,&collide)) {
		old->flags&= ~XkbIM_NoAutomatic;
		old->flags|= (new->flags&XkbIM_NoAutomatic);
		old->defs.defined|= _LED_Automatic;
	    }
	    if (UseNewField(_LED_DrivesKbd,&old->defs,&new->defs,&collide)) {
		old->flags&= ~XkbIM_LEDDrivesKB;
		old->flags|= (new->flags&XkbIM_LEDDrivesKB);
		old->defs.defined|= _LED_DrivesKbd;
	    }
	    if (collide) {
		WARN1("Map for indicator %s redefined\n",
				XkbAtomText(NULL,old->name,XkbMessage));
		ACTION1("Using %s definition for duplicate fields\n",
				(new->defs.merge==MergeAugment?"first":"last"));
	    }
	    return oldLEDs;
	}
	if (old->defs.next==NULL)
	    last= old;
    }
    /* new definition */
    old= uTypedAlloc(LEDInfo);
    if (!old) {
	WSGO("Couldn't allocate indicator map\n");
	ACTION1("Map for indicator %s not compiled\n",
				XkbAtomText(NULL,new->name,XkbMessage));
	return False;
    }
    *old= *new;
    old->defs.next= NULL;
    if (last) {
	last->defs.next= &old->defs;
	return oldLEDs;
    }
    return old;
}

LookupEntry	modComponentNames[] = {
	{	"base",		XkbIM_UseBase		},
	{	"latched",	XkbIM_UseLatched	},
	{	"locked",	XkbIM_UseLocked		},
	{	"effective",	XkbIM_UseEffective	},
	{	"compat",	XkbIM_UseCompat		},
	{	"any",		XkbIM_UseAnyMods	},
	{	"none",		0			},
	{	NULL,		0			}
};
LookupEntry	groupComponentNames[] = {
	{	"base",		XkbIM_UseBase		},
	{	"latched",	XkbIM_UseLatched	},
	{	"locked",	XkbIM_UseLocked		},
	{	"effective",	XkbIM_UseEffective	},
	{	"any",		XkbIM_UseAnyGroup	},
	{	"none",		0			},
	{	NULL,		0			}
};

int
#if NeedFunctionPrototypes
SetIndicatorMapField(	LEDInfo *	led,
			XkbDescPtr 	xkb,
			char *		field,
			ExprDef *	arrayNdx,
			ExprDef *	value)
#else
SetIndicatorMapField(led,xkb,field,arrayNdx,value)
    LEDInfo *	led;
    XkbDescPtr	xkb;
    char *	field;
    ExprDef *	arrayNdx;
    ExprDef *	value;
#endif
{
ExprResult	rtrn;
Bool		ok;

    ok= True;
    if ((uStrCaseCmp(field,"modifiers")==0)||(uStrCaseCmp(field,"mods")==0)) {
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveModMask(value,&rtrn,LookupVModMask,(XPointer)xkb))
	    return ReportIndicatorBadType(xkb->dpy,led,field,"modifier mask");
	led->real_mods= rtrn.uval&0xff;
	led->vmods= (rtrn.uval>>8)&0xff;
	led->defs.defined|= _LED_Mods;
    }
    else if (uStrCaseCmp(field,"groups")==0) {
	extern LookupEntry	groupNames[];
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveMask(value,&rtrn,SimpleLookup,(XPointer)groupNames))
	    return ReportIndicatorBadType(xkb->dpy,led,field,"group mask");
	led->groups= rtrn.uval;
	led->defs.defined|= _LED_Groups;
    }
    else if ((uStrCaseCmp(field,"controls")==0)||
	     (uStrCaseCmp(field,"ctrls")==0)) {
	extern LookupEntry ctrlNames[];
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveMask(value,&rtrn,SimpleLookup,(XPointer)ctrlNames))
	    return ReportIndicatorBadType(xkb->dpy,led,field,"controls mask");
	led->ctrls= rtrn.uval;
	led->defs.defined|= _LED_Ctrls;
    }
    else if (uStrCaseCmp(field,"allowexplicit")==0) {
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveBoolean(value,&rtrn,NULL,NULL))
	    return ReportIndicatorBadType(xkb->dpy,led,field,"boolean");
	if (rtrn.uval)	led->flags&= ~XkbIM_NoExplicit;
	else		led->flags|=  XkbIM_NoExplicit;
	led->defs.defined|= _LED_Explicit;
    }
    else if ((uStrCaseCmp(field,"whichmodstate")==0)||
	     (uStrCaseCmp(field,"whichmodifierstate")==0)) {
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveMask(value,&rtrn,SimpleLookup,
						(XPointer)modComponentNames)) {
	    return ReportIndicatorBadType(xkb->dpy,led,field,
    					"mask of modifier state components");
	}
	led->which_mods= rtrn.uval;
    }
    else if (uStrCaseCmp(field,"whichgroupstate")==0) {
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveMask(value,&rtrn,SimpleLookup,
						(XPointer)groupComponentNames)){
	    return ReportIndicatorBadType(xkb->dpy,led,field,
					"mask of group state components");
	}
	led->which_groups= rtrn.uval;
    } 
    else if ((uStrCaseCmp(field,"driveskbd")==0)||
	     (uStrCaseCmp(field,"driveskeyboard")==0)||
	     (uStrCaseCmp(field,"leddriveskbd")==0)||
	     (uStrCaseCmp(field,"leddriveskeyboard")==0)||
	     (uStrCaseCmp(field,"indicatordriveskbd")==0)||
	     (uStrCaseCmp(field,"indicatordriveskeyboard")==0)) {
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveBoolean(value,&rtrn,NULL,NULL))
	    return ReportIndicatorBadType(xkb->dpy,led,field,"boolean");
	if (rtrn.uval)	led->flags|=  XkbIM_LEDDrivesKB;
	else		led->flags&= ~XkbIM_LEDDrivesKB;
	led->defs.defined|= _LED_DrivesKbd;
    }
    else if (uStrCaseCmp(field,"index")==0) {
	if (arrayNdx!=NULL)
	    return ReportIndicatorNotArray(xkb->dpy,led,field);
	if (!ExprResolveInteger(value,&rtrn,NULL,NULL))
	    return ReportIndicatorBadType(xkb->dpy,led,field,"indicator index");
	if ((rtrn.uval<1)||(rtrn.uval>32)) {
	    ERROR2("Illegal indicator index %d (range 1..%d)\n",rtrn.uval,
							XkbNumIndicators);
	    ACTION1("Index definition for %s indicator ignored\n",
				XkbAtomText(NULL,led->name,XkbMessage));
	    return False;
	}
	led->indicator= rtrn.uval;
	led->defs.defined|= _LED_Index;
    }
    else {
	ERROR2("Unknown field %s in map for %s indicator\n",field,
				XkbAtomText(NULL,led->name,XkbMessage));
	ACTION("Definition ignored\n");
	ok= False;
    }
    return ok;
}

LEDInfo *
#if NeedFunctionPrototypes
HandleIndicatorMapDef(	IndicatorMapDef *	def,
			XkbDescPtr		xkb,
			LEDInfo *		dflt,
			LEDInfo *		oldLEDs,
			unsigned 		merge)
#else
HandleIndicatorMapDef(def,xkb,dflt,oldLEDs,merge)
    IndicatorMapDef *	def;
    XkbDescPtr		xkb;
    LEDInfo *		dflt;
    LEDInfo *		oldLEDs;
    unsigned 		merge;
#endif
{
LEDInfo			led,*rtrn;
VarDef *		var;
Bool			ok;
 
    if (def->merge!=MergeDefault)
	merge= def->merge;

    led= *dflt;
    led.defs.merge= merge;
    led.name= def->name;

    ok= True;
    for (var= def->body;var!=NULL;var= (VarDef *)var->common.next) {
	ExprResult	elem,field;
	ExprDef *	arrayNdx;
	if (!ExprResolveLhs(var->name,&elem,&field,&arrayNdx)) {
	    ok= False;
	    continue;
	}
	if (elem.str!=NULL) {
	    ERROR1("Cannot set defaults for \"%s\" element in indicator map\n",
								elem.str);
	    ACTION2("Assignment to %s.%s ignored\n",elem.str,field.str);
	    ok= False;
	}
	else {
	    ok=SetIndicatorMapField(&led,xkb,field.str,arrayNdx,var->value)&&ok;
	}
    }
    if (ok) {
	rtrn= AddIndicatorMap(oldLEDs,&led);
	return rtrn;
    }
    return NULL;
}

Bool 
#if NeedFunctionPrototypes
CopyIndicatorMapDefs(XkbFileInfo *result,LEDInfo *leds,LEDInfo **unboundRtrn)
#else
CopyIndicatorMapDefs(result,leds,unboundRtrn)
    XkbFileInfo *	result;
    LEDInfo *		leds;
    LEDInfo **		unboundRtrn;
#endif
{
LEDInfo *		led,*next;
LEDInfo *		unbound,*last;
XkbDescPtr		xkb;

    xkb= result->xkb;
    if (XkbAllocNames(xkb,XkbIndicatorNamesMask,0,0)!=Success) {
	WSGO("Couldn't allocate names\n");
	ACTION("Indicator names may be incorrect\n");
    }
    if (XkbAllocIndicatorMaps(xkb)!=Success) {
	WSGO("Can't allocate indicator maps\n");
	ACTION("Indicator map definitions may be lost\n");
	return False;
    }
    last= unbound= (unboundRtrn?*unboundRtrn:NULL);
    while ((last!=NULL) && (last->defs.next!=NULL)) {
	last= (LEDInfo *)last->defs.next;
    }
    for (led=leds;led!=NULL;led=next) {
	next= (LEDInfo *)led->defs.next;
	if ((led->groups!=0)&&(led->which_groups==0)) 
	    led->which_groups= XkbIM_UseEffective;
	if ((led->which_mods==0)&&((led->real_mods)||(led->vmods)))
	    led->which_mods= XkbIM_UseEffective;
	if ((led->indicator==_LED_NotBound)||(!xkb->indicators)) {
	    if (unboundRtrn!=NULL) {
		led->defs.next= NULL;
		if (last!=NULL) 	last->defs.next= (CommonInfo *)led;
		else			unbound= led;
		last= led;
	    }
	    else uFree(led);
	}
	else {
	    register XkbIndicatorMapPtr im;
	    im= &xkb->indicators->maps[led->indicator-1];
	    im->flags= led->flags;
	    im->which_groups= led->which_groups;
	    im->groups= led->groups;
	    im->which_mods= led->which_mods;
	    im->mods.mask= led->real_mods;
	    im->mods.real_mods= led->real_mods;
	    im->mods.vmods= led->vmods;
	    im->ctrls= led->ctrls;
	    if (xkb->names!=NULL)
		xkb->names->indicators[led->indicator-1]= led->name;
	    uFree(led);
	}
    }
    if (unboundRtrn!=NULL) {
	*unboundRtrn= unbound;
    }
    return True;
}

Bool
#if NeedFunctionPrototypes
BindIndicators(	XkbFileInfo *	result,
		Bool		force,
		LEDInfo *	unbound,
		LEDInfo **	unboundRtrn)
#else
BindIndicators(result,force,unbound,unboundRtrn)
    XkbFileInfo *	result;
    Bool		force;
    LEDInfo *		unbound;
    LEDInfo **		unboundRtrn;
#endif
{
XkbDescPtr		xkb;
register int 		i;
register LEDInfo	 *led,*next,*last;

    xkb= result->xkb;
    if (xkb->names!=NULL) {
	for (led=unbound;led!=NULL;led= (LEDInfo *)led->defs.next) {
	    if (led->indicator==_LED_NotBound) {
		for (i=0;i<XkbNumIndicators;i++) {
		    if (xkb->names->indicators[i]==led->name) {
			led->indicator= i+1;
			break;
		    }
		}
	    }
	}
	if (force) {
	    for (led=unbound;led!=NULL;led= (LEDInfo *)led->defs.next) {
		if (led->indicator==_LED_NotBound) {
		    for (i=0;i<XkbNumIndicators;i++) {
			if (xkb->names->indicators[i]==None) {
			    xkb->names->indicators[i]= led->name;
			    led->indicator= i+1;
			    xkb->indicators->phys_indicators&= ~(1<<i);
			    break;
			}
		    }
		    if (led->indicator==_LED_NotBound) {
			ERROR("No unnamed indicators found\n");
			ACTION1("Virtual indicator map \"%s\" not bound\n",
				XkbAtomGetString(xkb->dpy,led->name));
			continue;
		    }
		}
	    }
	}
    }
    for (last=NULL,led=unbound;led!=NULL;led= next) {
	next= (LEDInfo *)led->defs.next;
	if (led->indicator==_LED_NotBound) {
	    if (force) {
		unbound= next;
		uFree(led);
	    }
	    else {
		if (last)
		     last->defs.next= &led->defs;
		else unbound= led;
		last= led;
	    }
	}
	else {
	    if ((xkb->names!=NULL)&&
		(xkb->names->indicators[led->indicator-1]!=led->name)) {
		Atom old= xkb->names->indicators[led->indicator-1];
		ERROR1("Multiple names bound to indicator %d\n",(unsigned int)led->indicator);
		ACTION2("Using %s, ignoring %s\n",
				XkbAtomGetString(xkb->dpy,old),
				XkbAtomGetString(xkb->dpy,led->name));
		led->indicator= _LED_NotBound;
		if (force) {
		    uFree(led);
		    unbound= next;
		}
		else {
		    if (last)
			 last->defs.next= &led->defs;
		    else unbound= led;
		    last= led;
		}
	    }
	    else {
		XkbIndicatorMapPtr map;
		map= &xkb->indicators->maps[led->indicator-1];
		map->flags= led->flags;
		map->which_groups= led->which_groups;
		map->groups= led->groups;
		map->which_mods= led->which_mods;
		map->mods.mask= led->real_mods;
		map->mods.real_mods= led->real_mods;
		map->mods.vmods= led->vmods;
		map->ctrls= led->ctrls;
		if (last)	last->defs.next= &next->defs;
		else		unbound= next;
		led->defs.next= NULL;
		uFree(led);
	    }
	}
    }
    if (unboundRtrn) {
	*unboundRtrn= unbound;
    }
    else if (unbound) {
	for (led=unbound;led!=NULL;led=next) {
	    next= (LEDInfo *)led->defs.next;
	    uFree(led);
	}
    }
    return True;
}