demarches-normaliennes/app/javascript/shared/utils.js

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JavaScript
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import Rails from '@rails/ujs';
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import $ from 'jquery';
import debounce from 'debounce';
export { debounce };
export const { fire, ajax } = Rails;
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export function show({ classList }) {
classList.remove('hidden');
}
export function hide({ classList }) {
classList.add('hidden');
}
export function toggle({ classList }) {
classList.toggle('hidden');
}
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export function delegate(eventNames, selector, callback) {
eventNames
.split(' ')
.forEach(eventName =>
Rails.delegate(document, selector, eventName, callback)
);
}
export function getJSON(url, data, method = 'get') {
incrementActiveRequestsCount();
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data = method !== 'get' ? JSON.stringify(data) : data;
return Promise.resolve(
$.ajax({
method,
url,
data,
contentType: 'application/json',
dataType: 'json'
})
).finally(decrementActiveRequestsCount);
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}
export function scrollTo(container, scrollTo) {
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container.scrollTop =
offset(scrollTo).top - offset(container).top + container.scrollTop;
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}
export function scrollToBottom(container) {
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container.scrollTop = container.scrollHeight;
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}
export function on(selector, eventName, fn) {
[...document.querySelectorAll(selector)].forEach(element =>
element.addEventListener(eventName, event => fn(event, event.detail))
);
}
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export function to(promise) {
return promise.then(result => [result]).catch(error => [null, error]);
}
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function offset(element) {
const rect = element.getBoundingClientRect();
return {
top: rect.top + document.body.scrollTop,
left: rect.left + document.body.scrollLeft
};
}
const DATA_ACTIVE_REQUESTS_COUNT = 'data-active-requests-count';
function incrementActiveRequestsCount() {
const count = document.body.getAttribute(DATA_ACTIVE_REQUESTS_COUNT) || '0';
document.body.setAttribute(DATA_ACTIVE_REQUESTS_COUNT, parseInt(count) + 1);
}
function decrementActiveRequestsCount() {
const count = document.body.getAttribute(DATA_ACTIVE_REQUESTS_COUNT) || '0';
document.body.setAttribute(DATA_ACTIVE_REQUESTS_COUNT, parseInt(count) - 1);
}