#include <stdlib.h>

#include "lx.h"

#include "proto.h"
#include "internal.h"

typedef struct priv_GetInputFocus PRIV_GetInputFocus;

struct priv_GetInputFocus {
  LX_XID *focusp;
  LX_XID *revertp;
  } ;

static void done_GetInputFocus(LX_OP *op, const unsigned char *rep)
{
 PRIV_GetInputFocus *p;
 LX_XID f;
 LX_XID r;

 switch (rep[1])
  { case 0: r = LX_FOCUS_None;        break;
    case 1: r = LX_FOCUS_PointerRoot; break;
    case 2: r = LX_FOCUS_Parent;      break;
    default:
       lx__protoerr(op->conn,"invalid revert-to %d in GetInputFocus reply",rep[1]);
       return;
       break;
  }
 f = r_card32(rep+8);
 switch (f)
  { case 0: f = LX_FOCUS_None;        break;
    case 1: f = LX_FOCUS_PointerRoot; break;
  }
 p = op->reqpriv;
 if (p->focusp) *p->focusp = f;
 if (p->revertp) *p->revertp = r;
 op->reqpriv = 0;
 free(p);
}

LX_OP *lx_GetInputFocus(LX_CONN *xc, LX_XID *focusp, LX_XID *revertp)
{
 unsigned char req[4];
 PRIV_GetInputFocus *p;

 if (xc->flags & XCF_FAIL)
  { lx__bad_call(xc,"lx_GetInputFocus");
    return(0);
  }
 p = malloc(sizeof(PRIV_GetInputFocus));
 if (! p)
  { lx__nomem_fail(xc);
    return(0);
  }
 p->focusp = focusp;
 p->revertp = revertp;
 req[0] = XP_REQ_GetInputFocus;
 req[1] = 0;
 w_card16(&req[2],1);
 return(lx__expect_reply(xc,&req[0],4,&done_GetInputFocus,p,0));
}