Stuff

ewl_callback_insert(Ewl_Widget *w, Ewl_Callback_Type t,
                                Ewl_Callback *cb, unsigned int pos)
{
        Ewl_Callback *old = NULL;

        DENTER_FUNCTION(DLEVEL_STABLE);
        DCHECK_PARAM_PTR_RET("w", w, 0);
        DCHECK_PARAM_PTR_RET("cb", cb, 0);

        /* set direct if possible */
        if (!EWL_CALLBACK_LEN(w, t))
        {
                w->callbacks[t].list = (void *)cb;
                w->callbacks[t].len = 1;
                EWL_CALLBACK_SET_DIRECT(w, t);

                DRETURN_INT(cb->id, DLEVEL_STABLE);
        }
        w->callbacks[t].len ++;

        /* if we have a type direct then we need to save off the direct
         * pointer and set the list to NULL so it'll be allocd' correctly */
        if (w->callbacks[t].mask & EWL_CALLBACK_TYPE_DIRECT)
        {
                old = (Ewl_Callback *)w->callbacks[t].list;
                w->callbacks[t].list = NULL;
                EWL_CALLBACK_SET_NODIRECT(w, t);
        }

        w->callbacks[t].list = realloc(w->callbacks[t].list,
                                        w->callbacks[t].len * sizeof(void *));

        /* if old is set this was a direct so we can just set 0, 1 and be
         * done with it */
        if (old)
        {
                w->callbacks[t].list[0] = (!pos ? cb : old);
                w->callbacks[t].list[1] = ( pos ? cb : old);
        }
        else
        {
                /* only have to move if we aren't at the end already */
                if (pos != (w->callbacks[t].len - 1))
                {
printf("pos %d len %d\n", pos, w->callbacks[t].len);
                        memmove(w->callbacks[t].list + ((pos + 1) * sizeof(void *)), 
                                w->callbacks[t].list + (pos * sizeof(void *)), 
                                (w->callbacks[t].len - 1) * sizeof(void *));
                }       
                w->callbacks[t].list[pos] = cb;
        }

{
        int i;
        for (i = 0; i < EWL_CALLBACK_LEN(w, t); i++)
        {
                printf("       %d %p\n", i, w->callbacks[t].list[i]);
        }
        printf("----------------\n");
}

        DRETURN_INT(cb->id, DLEVEL_STABLE);
}


struct Ewl_Callback_Chain
{               
        void **list;
        unsigned short mask;
        unsigned short len;
};