102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
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// 15 may 2019
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#include <stdlib.h>
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#include "ui.h"
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#include "uipriv.h"
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struct handler {
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int id;
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uiHandlerFunc f;
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void *sender;
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void *data;
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bool blocked;
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};
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static int handlerCmp(const void *a, const void *b)
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{
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const struct handler *ha = (const struct handler *) a;
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const struct handler *hb = (const struct handler *) b;
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// This could be ha->id - hb->id, but let's do it the explicit way to avoid integer overflow/underflow.
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if (ha->id < hb->id)
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return -1;
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if (ha->id > hb->id)
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return 1;
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return 0;
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}
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static struct handler *handlerFind(struct handler *handlers, size_t len, int id)
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{
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struct handler key;
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memset(&key, 0, sizeof (struct handler));
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key.id = id;
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return (struct handler *) bsearch(&key, handlers, len, sizeof (struct handler), handlerCmp);
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}
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static void handlerSort(struct handler *handlers, size_t len)
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{
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qsort(handlers, len, sizeof (struct handler), handlerCmp);
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}
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struct uiEvent {
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uiEventOptions opts;
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struct handler *handlers;
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size_t len;
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size_t cap;
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bool firing;
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};
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uiEvent *uiNewEvent(uiEventOptions *options)
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{
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}
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int uiEventAddHandler(uiEvent *e, uiEventHandler handler, void *sender, void *data)
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{
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}
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void uiEventDeleteHandler(uiEvent *e, int id)
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{
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struct handler *h;
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if (e == NULL)
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TODO
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if (e->firing)
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TODO
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if (e->len == 0)
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TODO
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h = handlerFind(e->handlers, e->len, id);
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if (h == NULL)
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TODO
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e->len--;
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memmove(h + 1, h, (e->len - (h - e->handlers)) * sizeof (struct handler));
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}
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void uiEventFire(uiEvent *e, void *sender, void *args)
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{
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struct handler *h;
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size_t i;
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if (e == NULL)
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TODO
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if (e->firing)
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TODO
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if (e->opts.Global && sender != NULL)
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TODO
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e->firing = true;
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h = e->handlers;
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for (i = 0; i < e->len; i++) {
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if (h->sender == sender && !h->blocked)
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(*(h->f))(sender, args, h->data);
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h++;
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}
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e->firing = false;
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}
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bool uiEventHandlerBlocked(const uiEvent *e, int id)
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{
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}
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void uiEventSetHandlerBlocked(uiEvent *e, int id, bool blocked)
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{
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}
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