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/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#include <zephyr.h>
#include <logging/log.h>
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
#include <zmk/event-manager.h>
extern struct zmk_event_type *__event_type_start[];
extern struct zmk_event_type *__event_type_end[];
extern struct zmk_event_subscription __event_subscriptions_start[];
extern struct zmk_event_subscription __event_subscriptions_end[];
int zmk_event_manager_handle_from(struct zmk_event_header *event, uint8_t start_index) {
int ret = 0;
uint8_t len = __event_subscriptions_end - __event_subscriptions_start;
for (int i = start_index; i < len; i++) {
struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
if (ev_sub->event_type == event->event) {
ret = ev_sub->listener->callback(event);
if (ret < 0) {
LOG_DBG("Listener returned an error: %d", ret);
goto release;
} else if (ret > 0) {
switch (ret) {
case ZMK_EV_EVENT_HANDLED:
LOG_DBG("Listener handled the event");
ret = 0;
goto release;
case ZMK_EV_EVENT_CAPTURED:
LOG_DBG("Listener captured the event");
event->last_listener_index = i;
// Listeners are expected to free events they capture
return 0;
}
}
}
}
release:
k_free(event);
return ret;
}
int zmk_event_manager_raise(struct zmk_event_header *event) {
return zmk_event_manager_handle_from(event, 0);
}
int zmk_event_manager_raise_after(struct zmk_event_header *event,
const struct zmk_listener *listener) {
uint8_t len = __event_subscriptions_end - __event_subscriptions_start;
for (int i = 0; i < len; i++) {
struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
if (ev_sub->event_type == event->event && ev_sub->listener == listener) {
return zmk_event_manager_handle_from(event, i + 1);
}
}
LOG_WRN("Unable to find where to raise this after event");
return -EINVAL;
}
int zmk_event_manager_raise_at(struct zmk_event_header *event,
const struct zmk_listener *listener) {
uint8_t len = __event_subscriptions_end - __event_subscriptions_start;
for (int i = 0; i < len; i++) {
struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
if (ev_sub->event_type == event->event && ev_sub->listener == listener) {
return zmk_event_manager_handle_from(event, i);
}
}
LOG_WRN("Unable to find where to raise this event");
return -EINVAL;
}
int zmk_event_manager_release(struct zmk_event_header *event) {
return zmk_event_manager_handle_from(event, event->last_listener_index + 1);
}
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