woocommerce/plugins/woocommerce-blocks/assets/js/base/utils/legacy-events.ts

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const Event = window.Event || null;
interface DispatchedEventProperties {
// Whether the event bubbles.
bubbles?: boolean;
// Whether the event is cancelable.
cancelable?: boolean;
// Element that dispatches the event. By default, the body.
element?: HTMLElement;
}
/**
* Wrapper function to dispatch an event so it's compatible with IE11.
*/
export const dispatchEvent = (
name: string,
{ bubbles = false, cancelable = false, element }: DispatchedEventProperties
): void => {
if ( ! element ) {
element = document.body;
}
// In IE, Event is an object and can't be instantiated with `new Event()`.
if ( typeof Event === 'function' ) {
const event = new Event( name, {
bubbles,
cancelable,
} );
element.dispatchEvent( event );
} else {
const event = document.createEvent( 'Event' );
event.initEvent( name, bubbles, cancelable );
element.dispatchEvent( event );
}
};
let fragmentRequestTimeoutId: ReturnType< typeof setTimeout >;
// This is a hack to trigger cart updates till we migrate to block based cart
// that relies on the store, see
// https://github.com/woocommerce/woocommerce-gutenberg-products-block/issues/1247
export const triggerFragmentRefresh = (): void => {
if ( fragmentRequestTimeoutId ) {
clearTimeout( fragmentRequestTimeoutId );
}
fragmentRequestTimeoutId = setTimeout( () => {
dispatchEvent( 'wc_fragment_refresh', {
bubbles: true,
cancelable: true,
} );
}, 50 );
};
/**
* Function that listens to a jQuery event and dispatches a native JS event.
* Useful to convert WC Core events into events that can be read by blocks.
*
* Returns a function to remove the jQuery event handler. Ideally it should be
* used when the component is unmounted.
*/
export const translateJQueryEventToNative = (
// Name of the jQuery event to listen to.
jQueryEventName: string,
// Name of the native event to dispatch.
nativeEventName: string,
// Whether the event bubbles.
bubbles = false,
// Whether the event is cancelable.
cancelable = false
): ( () => void ) => {
if ( typeof jQuery !== 'function' ) {
return () => void null;
}
const eventDispatcher = () => {
dispatchEvent( nativeEventName, { bubbles, cancelable } );
};
jQuery( document ).on( jQueryEventName, eventDispatcher );
return () => jQuery( document ).off( jQueryEventName, eventDispatcher );
};