MediaWiki:Common.js

(function() {
    function resizeAndCenterSlideshow(mwSlideshow) {
        const slideshow = mwSlideshow.querySelector('.slideshow');

        if (!slideshow) return;

        // Reset positioning to let the parent naturally size
        slideshow.style.position = 'relative';
        slideshow.style.left = '';
        slideshow.style.top = '';
        slideshow.style.transform = '';

        // Force `mw-jsslideshow` to wrap tightly around the slideshow
        mwSlideshow.style.width = slideshow.scrollWidth + 'px';
        mwSlideshow.style.height = slideshow.scrollHeight + 'px';
        mwSlideshow.style.margin = '0 auto';  // Center mw-jsslideshow itself

        // Center each individual image within its slide div
        slideshow.querySelectorAll('div').forEach(slide => {
            const img = slide.querySelector('img');
            if (img) {
                // Reset slide container spacing
                slide.style.padding = '0';
                slide.style.margin = '0';
                slide.style.border = 'none';
                slide.style.width = slideshow.scrollWidth + 'px';
                slide.style.display = 'flex';
                slide.style.justifyContent = 'center';
                slide.style.alignItems = 'center';
                slide.style.boxSizing = 'border-box';

                // Image centering & sizing
                img.style.display = 'block';
                img.style.maxWidth = '100%';
                img.style.height = 'auto';
                img.style.objectFit = 'contain';
                img.style.margin = '0'; // Kill any ghost margin
            }
        });
    }

    function initSlideshowResizer() {
        document.querySelectorAll('.mw-jsslideshow').forEach(mwSlideshow => {
            resizeAndCenterSlideshow(mwSlideshow);

            window.addEventListener('resize', () => {
                resizeAndCenterSlideshow(mwSlideshow);
            });

            const slideshow = mwSlideshow.querySelector('.slideshow');
            if (slideshow) {
                const observer = new MutationObserver(() => {
                    resizeAndCenterSlideshow(mwSlideshow);
                });

                observer.observe(slideshow, {
                    attributes: true,
                    attributeFilter: ['style'],
                    childList: true,
                    subtree: true
                });
            }
        });
    }

    if (document.readyState === 'complete' || document.readyState === 'interactive') {
        initSlideshowResizer();
    } else {
        document.addEventListener('DOMContentLoaded', initSlideshowResizer);
    }
    
    
    function cleanSlideshowStyles(slideshowContainer) {
        const slideshow = slideshowContainer.querySelector('.slideshow');
        if (slideshow) {
            // Remove inline styles on the main slideshow container
            slideshow.style.width = '';
            slideshow.style.height = '';

            // Remove inline styles on each slide div
            slideshow.querySelectorAll('div').forEach(slide => {
                slide.style.width = '';
                slide.style.height = '';
            });
        }
    }

    function initSlideshowFix() {
        // Locate all mw-jsslideshow instances
        document.querySelectorAll('.mw-jsslideshow').forEach(mwSlideshow => {
            // Clean styles on page load
            cleanSlideshowStyles(mwSlideshow);

            // Optional: Re-clean styles on window resize
            window.addEventListener('resize', () => {
                cleanSlideshowStyles(mwSlideshow);
            });

            // Hook into slide transitions if needed (depends on the specific JS driving the slideshow)
            const slideshow = mwSlideshow.querySelector('.slideshow');
            if (slideshow) {
                const observer = new MutationObserver(() => {
                    cleanSlideshowStyles(mwSlideshow);
                });

                observer.observe(slideshow, {
                    attributes: true,
                    attributeFilter: ['style'],
                    childList: false,
                    subtree: false
                });
            }
        });
    }

    // Run once DOM is ready (in case the slideshows are injected late)
    if (document.readyState === 'complete' || document.readyState === 'interactive') {
        initSlideshowFix();
    } else {
        document.addEventListener('DOMContentLoaded', initSlideshowFix);
    }
})();
/* Any JavaScript here will be loaded for all users on every page load. */
(function() {
    function cleanSlideshowStyles(slideshowContainer) {
        const slideshow = slideshowContainer.querySelector('.slideshow');
        if (slideshow) {
            // Remove inline styles on the main slideshow container
            slideshow.style.width = '';
            slideshow.style.height = '';

            // Remove inline styles on each slide div
            slideshow.querySelectorAll('div').forEach(slide => {
                slide.style.width = '';
                slide.style.height = '';
            });
        }
    }

    function initSlideshowFix() {
        // Locate all mw-jsslideshow instances
        document.querySelectorAll('.mw-jsslideshow').forEach(mwSlideshow => {
            // Clean styles on page load
            cleanSlideshowStyles(mwSlideshow);

            // Optional: Re-clean styles on window resize
            window.addEventListener('resize', () => {
                cleanSlideshowStyles(mwSlideshow);
            });

            // Hook into slide transitions if needed (depends on the specific JS driving the slideshow)
            const slideshow = mwSlideshow.querySelector('.slideshow');
            if (slideshow) {
                const observer = new MutationObserver(() => {
                    cleanSlideshowStyles(mwSlideshow);
                });

                observer.observe(slideshow, {
                    attributes: true,
                    attributeFilter: ['style'],
                    childList: false,
                    subtree: false
                });
            }
        });
    }

    // Run once DOM is ready (in case the slideshows are injected late)
    if (document.readyState === 'complete' || document.readyState === 'interactive') {
        initSlideshowFix();
    } else {
        document.addEventListener('DOMContentLoaded', initSlideshowFix);
    }
})();