76 lines
1.9 KiB
JavaScript
76 lines
1.9 KiB
JavaScript
const listeners = {};
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const stack = [];
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/**
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* Emit a custom event for any handlers to pick-up.
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* @param {String} eventName
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* @param {*} eventData
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*/
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function emit(eventName, eventData) {
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stack.push({name: eventName, data: eventData});
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if (typeof listeners[eventName] === 'undefined') return this;
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const eventsToStart = listeners[eventName];
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for (let i = 0; i < eventsToStart.length; i++) {
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const event = eventsToStart[i];
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event(eventData);
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}
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}
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/**
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* Listen to a custom event and run the given callback when that event occurs.
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* @param {String} eventName
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* @param {Function} callback
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* @returns {Events}
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*/
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function listen(eventName, callback) {
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if (typeof listeners[eventName] === 'undefined') listeners[eventName] = [];
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listeners[eventName].push(callback);
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}
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/**
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* Emit an event for public use.
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* Sends the event via the native DOM event handling system.
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* @param {Element} targetElement
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* @param {String} eventName
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* @param {Object} eventData
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*/
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function emitPublic(targetElement, eventName, eventData) {
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const event = new CustomEvent(eventName, {
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detail: eventData,
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bubbles: true,
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});
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targetElement.dispatchEvent(event);
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}
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/**
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* Notify of standard server-provided validation errors.
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* @param {Object} error
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*/
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function showValidationErrors(error) {
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if (!error.status) return;
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if (error.status === 422 && error.data) {
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const message = Object.values(error.data).flat().join('\n');
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emit('error', message);
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}
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}
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/**
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* Notify standard server-provided error messages.
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* @param {Object} error
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*/
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function showResponseError(error) {
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if (!error.status) return;
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if (error.status >= 400 && error.data && error.data.message) {
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emit('error', error.data.message);
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}
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}
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export default {
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emit,
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emitPublic,
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listen,
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success: msg => emit('success', msg),
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error: msg => emit('error', msg),
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showValidationErrors,
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showResponseError,
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};
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