MediaWiki:Common.js: mudanças entre as edições

mw.loader.using('mediawiki.util', function () {

    const track = document.getElementById('everlightTrack');
    if (!track) return;

    const items = track.children;
    let index = 0;
    let autoScroll;

    function scrollToIndex(i) {
        const item = items[i];
        if (!item) return;

        const trackRect = track.getBoundingClientRect();
        const itemRect = item.getBoundingClientRect();

        const offset =
            item.offsetLeft -
            (trackRect.width / 2) +
            (itemRect.width / 2);

        track.scrollTo({ left: offset, behavior: 'smooth' });
    }

    function next() {
        index = (index + 1) % items.length;
        scrollToIndex(index);
    }

    function prev() {
        index = (index - 1 + items.length) % items.length;
        scrollToIndex(index);
    }

    document.getElementById('everlightNext')?.addEventListener('click', () => {
        stopAuto();
        next();
        startAuto();
    });

    document.getElementById('everlightPrev')?.addEventListener('click', () => {
        stopAuto();
        prev();
        startAuto();
    });

    function startAuto() {
        autoScroll = setInterval(next, 4000); // 4 segundos
    }

    function stopAuto() {
        clearInterval(autoScroll);
    }

    scrollToIndex(index);
    startAuto();
});