Method deliver

src/py/reactpy/reactpy/core/layout.py:111–128

Dispatch an event to the targeted handler

(self, event: LayoutEventMessage)

        del self._model_states_by_life_cycle_state_id

    async def deliver(self, event: LayoutEventMessage) -> None:
        """Dispatch an event to the targeted handler"""
        # It is possible for an element in the frontend to produce an event
        # associated with a backend model that has been deleted. We only handle
        # events if the element and the handler exist in the backend. Otherwise
        # we just ignore the event.
        handler = self._event_handlers.get(event["target"])

        if handler is not None:
            try:
                await handler.function(event["data"])
            except Exception:
                logger.exception(f"Failed to execute event handler {handler}")
        else:
            logger.info(
                f"Ignored event - handler {event['target']!r} "
                "does not exist or its component unmounted"
            )

    async def render(self) -> LayoutUpdateMessage:
        if REACTPY_ASYNC_RENDERING.current: