Method mouseup

src/elements/container.rs:250–256

(&self, e: &mut MouseEvent)

// Overrides from WidgetComponent
impl Element for ContainerElement {
    fn mouseup(&self, e: &mut MouseEvent) {
        self.state.borrow_mut().mouse_down = false;
        let mut component = self.component.borrow_mut();
        if component.onmouseup.is_some() {
            let _ = component.onmouseup.get().try_send(e.clone());
        }
    }

    fn mousedown(&self, e: &mut MouseEvent) {
        self.state.borrow_mut().mouse_down = true;