catstodon/app/javascript/core/public.js

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// This file will be loaded on public pages, regardless of theme.
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import 'packs/public-path';
import ready from '../mastodon/ready';
const { delegate } = require('@rails/ujs');
const { length } = require('stringz');
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const getProfileAvatarAnimationHandler = (swapTo) => {
//animate avatar gifs on the profile page when moused over
return ({ target }) => {
const swapSrc = target.getAttribute(swapTo);
//only change the img source if autoplay is off and the image src is actually different
if(target.getAttribute('data-autoplay') !== 'true' && target.src !== swapSrc) {
target.src = swapSrc;
}
};
};
delegate(document, 'img#profile_page_avatar', 'mouseover', getProfileAvatarAnimationHandler('data-original'));
delegate(document, 'img#profile_page_avatar', 'mouseout', getProfileAvatarAnimationHandler('data-static'));
delegate(document, '#account_header', 'change', ({ target }) => {
const header = document.querySelector('.card .card__img img');
const [file] = target.files || [];
const url = file ? URL.createObjectURL(file) : header.dataset.originalSrc;
header.src = url;
});