Add the ability to capture event and release later

1 files changed, 29 insertions, 5 deletions

diff --git a/app/src/event_manager.c b/app/src/event_manager.c
index 567cdf0..3edba10 100644
--- a/app/src/event_manager.c
+++ b/app/src/event_manager.c
@@ -17,16 +17,30 @@ 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_raise(struct zmk_event_header *event)
+
+int zmk_event_manager_handle_from(struct zmk_event_header *event, u8_t start_index)
 {
-    int ret;
-    struct zmk_event_subscription *ev_sub;
-    for (ev_sub = __event_subscriptions_start; ev_sub != __event_subscriptions_end; ev_sub++) {
+    int ret = 0;
+    u8_t len = __event_subscriptions_end - __event_subscriptions_start;
+    for (int i = start_index + 1; 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) {
+            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;
+                }
             }
         }
     }
@@ -34,4 +48,14 @@ int zmk_event_manager_raise(struct zmk_event_header *event)
 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_release(struct zmk_event_header *event)
+{
+    return zmk_event_manager_handle_from(event, event->last_listener_index + 1);
 }
\ No newline at end of file