fn add_event()

in src/platform_impl/web/web_sys/canvas.rs [296:318]

• 20 lines of code
• 1 McCabe index (conditional complexity)

    fn add_event<E, F>(
        &self,
        event_name: &'static str,
        mut handler: F,
    ) -> EventListenerHandle<dyn FnMut(E)>
    where
        E: 'static + AsRef<web_sys::Event> + wasm_bindgen::convert::FromWasmAbi,
        F: 'static + FnMut(E),
    {
        let closure = Closure::wrap(Box::new(move |event: E| {
            {
                let event_ref = event.as_ref();
                event_ref.stop_propagation();
                event_ref.cancel_bubble();
            }

            handler(event);
        }) as Box<dyn FnMut(E)>);

        let listener = EventListenerHandle::new(&self.raw, event_name, closure);

        listener
    }