demarches-normaliennes/app/javascript/shared/activestorage/progress-bar.js
Pierre de La Morinerie e033ec3404 js: ignore missing DOM element on ProgressBar
Currently ProgressBar is used to monitor upload progress of attachments.

But there's two cases where the associated DOM element may be removed:

- In the champs editor, when the list scrolls, DOM elements are removed
and added dynamically by React;
- In the user form, the user might start an upload on a repetition, and
then remove the associated row during the download.

In both those cases, we don't want the missing DOM element to trigger
an error.
2020-09-03 15:03:13 +02:00

102 lines
2.5 KiB
JavaScript

const PENDING_CLASS = 'direct-upload--pending';
const ERROR_CLASS = 'direct-upload--error';
const COMPLETE_CLASS = 'direct-upload--complete';
/**
ProgressBar is and utility class responsible for
rendering upload progress bar. It is used to handle
direct-upload form ujs events but also in the
Uploader delegate used with uploads on json api.
As the associated DOM element may disappear for some
reason (a dynamic React list, an element being removed
and recreated again later, etc.), this class doesn't
raise any error if the associated DOM element cannot
be found.
*/
export default class ProgressBar {
static init(input, id, file) {
clearErrors(input);
const html = this.render(id, file.name);
input.insertAdjacentHTML('beforebegin', html);
}
static start(id) {
const element = getDirectUploadElement(id);
if (element) {
element.classList.remove(PENDING_CLASS);
}
}
static progress(id, progress) {
const element = getDirectUploadProgressElement(id);
if (element) {
element.style.width = `${progress}%`;
}
}
static error(id, error) {
const element = getDirectUploadElement(id);
if (element) {
element.classList.add(ERROR_CLASS);
element.setAttribute('title', error);
}
}
static end(id) {
const element = getDirectUploadElement(id);
if (element) {
element.classList.add(COMPLETE_CLASS);
}
}
static render(id, filename) {
return `<div id="direct-upload-${id}" class="direct-upload ${PENDING_CLASS}" data-direct-upload-id="${id}">
<div class="direct-upload__progress" style="width: 0%"></div>
<span class="direct-upload__filename">${filename}</span>
</div>`;
}
constructor(input, id, file) {
this.constructor.init(input, id, file);
this.id = id;
}
start() {
this.constructor.start(this.id);
}
progress(progress) {
this.constructor.progress(this.id, progress);
}
error(error) {
this.constructor.error(this.id, error);
}
end() {
this.constructor.end(this.id);
}
destroy() {
const element = getDirectUploadElement(this.id);
element.remove();
}
}
function clearErrors(input) {
const errorElements = input.parentElement.querySelectorAll(`.${ERROR_CLASS}`);
for (let element of errorElements) {
element.remove();
}
}
function getDirectUploadElement(id) {
return document.getElementById(`direct-upload-${id}`);
}
function getDirectUploadProgressElement(id) {
return document.querySelector(
`#direct-upload-${id} .direct-upload__progress`
);
}