Trait CustomElement

pub trait CustomElement {
    // Provided methods
    fn connected_callback(&mut self) { ... }
    fn disconnected_callback(&mut self) { ... }
    fn adopted_callback(&mut self) { ... }
    fn handle_event(&mut self, _event: Event) { ... }
    fn connected_move_callback(&mut self) { ... }
    fn attribute_changed_callback(
        &mut self,
        _name: &str,
        _old_value: JsValue,
        _new_value: JsValue,
    ) { ... }
}

This trait is the focal point of this crate, and implementing it allows your Rust struct to be used as a custom element.

It specifies all the methods can be called from the JavaScript wrapper class.

All of these functions have been provided default, no-op implementations. You may optionally provide implementations to hook into the custom element lifecycle.

Provided Methods

fn connected_callback(&mut self)

Called each time the element is added to the document

See MDN Documentation

fn disconnected_callback(&mut self)

Called each time the element is removed from the document

See MDN Documentation

fn adopted_callback(&mut self)

Called each time the element is moved to a new document

See MDN Documentation

fn handle_event(&mut self, _event: Event)

Enables using the custom element instance as an event handler catch-all

see https://gomakethings.com/the-handleevent-method-is-the-absolute-best-way-to-handle-events-in-web-components/

fn connected_move_callback(&mut self)

When defined, this is called instead of connectedCallback() and disconnectedCallback() each time the element is moved to a different place in the DOM via Element.moveBefore().

See MDN Documentation

fn attribute_changed_callback( &mut self, _name: &str, _old_value: JsValue, _new_value: JsValue, )

Called when attributes are changed, added, removed, or replaced

See MDN Documentation

Implementors