#include "graph.h"

#define KEEPORDER 1

/* Remove gads from, or add to, the window's list in hopes of speeding */
/* things up by not refreshing the world just to refresh one.          */

static struct Gadget *head = NULL;


void Snip(struct Gadget *gad)
{
    /* Use ID field to rember old position, in case we want it later. */
    /* The UserData field is already being used for other things.     */

    gad->GadgetID = RemoveGadget(wG, gad);

    /* remember it */
    gad->NextGadget = head;
    head = gad;
}

/* cut out all but 1 gadget */
void SnipAllBut(struct Gadget *keeper)
{
    struct Gadget *walker;

    walker = wG->FirstGadget;
    while (walker) {
        if (walker == keeper) {
            walker = walker->NextGadget;
        } else {
            Snip(walker);
            walker = wG->FirstGadget; /* resync */
        }
    }
}

void RestoreGads(void)
{
    struct Gadget *gad;
    int position = 0;

    while (head) {
        gad  = head;
        head = gad->NextGadget;
        gad->NextGadget = NULL;
#if KEEPORDER
        position = gad->GadgetID;
#endif
        AddGadget(wG, gad, position);
    }
}

void RefreshOneGad(struct Gadget *gad)
{
    SnipAllBut(gad);
    RefreshGadgets(gad, wG, NULL);
    RestoreGads();
}