MediaWiki:Common.js

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(function () {
    var iconSelector =
        '.meter, .parallel, .commentary, .pictures, .outline, .comment, .word';

    var panelSelector =
        '.metertext, .paralleltext, .commentarytext, ' +
        '.picturestext, .outlinetext, .commenttext, .wordtext';

    var openIcon = null;

    function updateWidth(icon) {
        var viewportWidth = document.documentElement.clientWidth;
        var availableWidth =
            viewportWidth - icon.getBoundingClientRect().left - 16;

        icon.style.setProperty(
            '--popup-width',
            Math.max(0, Math.min(viewportWidth * 0.7, availableWidth)) + 'px'
        );
    }

    document.addEventListener('click', function (event) {
        var icon = event.target.closest(iconSelector);

        if (!icon) {
            return;
        }

        var panel = icon.querySelector(panelSelector);

        if (panel && panel.contains(event.target)) {
            return;
        }

        if (icon === openIcon) {
            icon.classList.remove('open');
            openIcon = null;
            return;
        }

        if (openIcon) {
            openIcon.classList.remove('open');
        }

        updateWidth(icon);
        icon.classList.add('open');
        openIcon = icon;
    });

    window.addEventListener('resize', function () {
        if (openIcon) {
            updateWidth(openIcon);
        }
    });
})();