woocommerce/plugins/woocommerce-blocks/assets/js/blocks/cart-checkout/mini-cart/frontend.ts

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/**
* External dependencies
*/
import { getSetting } from '@woocommerce/settings';
import preloadScript from '@woocommerce/base-utils/preload-script';
import lazyLoadScript from '@woocommerce/base-utils/lazy-load-script';
import { translateJQueryEventToNative } from '@woocommerce/base-utils/legacy-events';
interface dependencyData {
src: string;
version?: string;
after?: string;
before?: string;
translations?: string;
}
// eslint-disable-next-line @wordpress/no-global-event-listener
window.onload = () => {
const miniCartBlocks = document.querySelectorAll( '.wc-block-mini-cart' );
let wasLoadScriptsCalled = false;
if ( miniCartBlocks.length === 0 ) {
return;
}
const dependencies = getSetting(
'mini_cart_block_frontend_dependencies',
{}
) as Record< string, dependencyData >;
// Preload scripts
for ( const dependencyHandle in dependencies ) {
const dependency = dependencies[ dependencyHandle ];
preloadScript( {
handle: dependencyHandle,
...dependency,
} );
}
// Make it so we can read jQuery events triggered by WC Core elements.
const removeJQueryAddingToCartEvent = translateJQueryEventToNative(
'adding_to_cart',
'wc-blocks_adding_to_cart'
);
const removeJQueryAddedToCartEvent = translateJQueryEventToNative(
'added_to_cart',
'wc-blocks_added_to_cart'
);
const loadScripts = async () => {
// Ensure we only call loadScripts once.
if ( wasLoadScriptsCalled ) {
return;
}
wasLoadScriptsCalled = true;
// Remove adding to cart event handler.
document.body.removeEventListener(
'wc-blocks_adding_to_cart',
loadScripts
);
removeJQueryAddingToCartEvent();
// Lazy load scripts.
for ( const dependencyHandle in dependencies ) {
const dependency = dependencies[ dependencyHandle ];
await lazyLoadScript( {
handle: dependencyHandle,
...dependency,
} );
}
};
document.body.addEventListener( 'wc-blocks_adding_to_cart', loadScripts );
miniCartBlocks.forEach( ( miniCartBlock, i ) => {
if ( ! ( miniCartBlock instanceof HTMLElement ) ) {
return;
}
const miniCartButton = miniCartBlock.querySelector(
'.wc-block-mini-cart__button'
);
const miniCartDrawerPlaceholderOverlay = miniCartBlock.querySelector(
'.wc-block-components-drawer__screen-overlay'
);
if ( ! miniCartButton || ! miniCartDrawerPlaceholderOverlay ) {
// Markup is not correct, abort.
return;
}
const showContents = () => {
document.body.removeEventListener(
'wc-blocks_added_to_cart',
// eslint-disable-next-line @typescript-eslint/no-use-before-define
showContentsAndUpdate
);
miniCartBlock.dataset.isPlaceholderOpen = 'true';
miniCartDrawerPlaceholderOverlay.classList.add(
'wc-block-components-drawer__screen-overlay--with-slide-in'
);
miniCartDrawerPlaceholderOverlay.classList.remove(
'wc-block-components-drawer__screen-overlay--is-hidden'
);
removeJQueryAddedToCartEvent();
};
const showContentsAndUpdate = () => {
miniCartBlock.dataset.isDataOutdated = 'true';
showContents();
};
miniCartButton.addEventListener( 'mouseover', loadScripts );
miniCartButton.addEventListener( 'focus', loadScripts );
miniCartButton.addEventListener( 'click', showContents );
// There might be more than one Mini Cart block in the page. Make sure
// only one opens when adding a product to the cart.
if ( i === 0 ) {
document.body.addEventListener(
'wc-blocks_added_to_cart',
showContentsAndUpdate
);
}
} );
};