90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
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/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <zephyr.h>
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#include <logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#include <zmk/event-manager.h>
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extern struct zmk_event_type *__event_type_start[];
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extern struct zmk_event_type *__event_type_end[];
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extern struct zmk_event_subscription __event_subscriptions_start[];
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extern struct zmk_event_subscription __event_subscriptions_end[];
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int zmk_event_manager_handle_from(struct zmk_event_header *event, u8_t start_index) {
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int ret = 0;
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u8_t len = __event_subscriptions_end - __event_subscriptions_start;
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for (int i = start_index; i < len; i++) {
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struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
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if (ev_sub->event_type == event->event) {
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ret = ev_sub->listener->callback(event);
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if (ret < 0) {
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LOG_DBG("Listener returned an error: %d", ret);
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goto release;
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} else if (ret > 0) {
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switch (ret) {
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case ZMK_EV_EVENT_HANDLED:
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LOG_DBG("Listener handled the event");
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ret = 0;
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goto release;
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case ZMK_EV_EVENT_CAPTURED:
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LOG_DBG("Listener captured the event");
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event->last_listener_index = i;
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// Listeners are expected to free events they capture
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return 0;
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}
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}
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}
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}
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release:
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k_free(event);
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return ret;
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}
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int zmk_event_manager_raise(struct zmk_event_header *event) {
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return zmk_event_manager_handle_from(event, 0);
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}
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int zmk_event_manager_raise_after(struct zmk_event_header *event,
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const struct zmk_listener *listener) {
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u8_t len = __event_subscriptions_end - __event_subscriptions_start;
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for (int i = 0; i < len; i++) {
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struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
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if (ev_sub->event_type == event->event && ev_sub->listener == listener) {
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return zmk_event_manager_handle_from(event, i + 1);
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}
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}
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LOG_WRN("Unable to find where to raise this after event");
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return -EINVAL;
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}
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int zmk_event_manager_raise_at(struct zmk_event_header *event,
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const struct zmk_listener *listener) {
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u8_t len = __event_subscriptions_end - __event_subscriptions_start;
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for (int i = 0; i < len; i++) {
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struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
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if (ev_sub->event_type == event->event && ev_sub->listener == listener) {
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return zmk_event_manager_handle_from(event, i);
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}
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}
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LOG_WRN("Unable to find where to raise this event");
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return -EINVAL;
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}
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int zmk_event_manager_release(struct zmk_event_header *event) {
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return zmk_event_manager_handle_from(event, event->last_listener_index + 1);
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}
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