Added lightbox support

assets/js/lightbox.js

@@ -0,0 +1,109 @@
+function lightbox(trigger) {
+    var onThumbnailsClick = function (e) {
+        e.preventDefault();
+
+        var items = [];
+        var index = 0;
+
+        var prevSibling = e.target.closest('.kg-card').previousElementSibling;
+
+        while (prevSibling && (prevSibling.classList.contains('kg-image-card') || prevSibling.classList.contains('kg-gallery-card'))) {
+            var prevItems = [];
+
+            prevSibling.querySelectorAll('img').forEach(function (item) {
+                prevItems.push({
+                    src: item.getAttribute('src'),
+                    msrc: item.getAttribute('src'),
+                    w: item.getAttribute('width'),
+                    h: item.getAttribute('height'),
+                    el: item,
+                })
+
+                index += 1;
+            });
+            prevSibling = prevSibling.previousElementSibling;
+
+            items = prevItems.concat(items);
+        }
+
+        if (e.target.classList.contains('kg-image')) {
+            items.push({
+                src: e.target.getAttribute('src'),
+                msrc: e.target.getAttribute('src'),
+                w: e.target.getAttribute('width'),
+                h: e.target.getAttribute('height'),
+                el: e.target,
+            });
+        } else {
+            var reachedCurrentItem = false;
+
+            e.target.closest('.kg-gallery-card').querySelectorAll('img').forEach(function (item) {
+                items.push({
+                    src: item.getAttribute('src'),
+                    msrc: item.getAttribute('src'),
+                    w: item.getAttribute('width'),
+                    h: item.getAttribute('height'),
+                    el: item,
+                });
+
+                if (!reachedCurrentItem && item !== e.target) {
+                    index += 1;
+                } else {
+                    reachedCurrentItem = true;
+                }
+            });
+        }
+
+        var nextSibling = e.target.closest('.kg-card').nextElementSibling;
+
+        while (nextSibling && (nextSibling.classList.contains('kg-image-card') || nextSibling.classList.contains('kg-gallery-card'))) {
+            nextSibling.querySelectorAll('img').forEach(function (item) {
+                items.push({
+                    src: item.getAttribute('src'),
+                    msrc: item.getAttribute('src'),
+                    w: item.getAttribute('width'),
+                    h: item.getAttribute('height'),
+                    el: item,
+                })
+            });
+            nextSibling = nextSibling.nextElementSibling;
+        }
+
+        var pswpElement = document.querySelectorAll('.pswp')[0];
+
+        var options = {
+            bgOpacity: 0.9,
+            closeOnScroll: true,
+            fullscreenEl: false,
+            history: false,
+            index: index,
+            shareEl: false,
+            zoomEl: false,
+            getThumbBoundsFn: function(index) {
+                var thumbnail = items[index].el,
+                    pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
+                    rect = thumbnail.getBoundingClientRect();
+
+                return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};
+            }
+        }
+
+        var gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
+        gallery.init();
+
+        return false;
+    };
+
+    var triggers = document.querySelectorAll(trigger);
+    triggers.forEach(function (trig) {
+        trig.addEventListener('click', function (e) {
+            onThumbnailsClick(e);
+        });
+    });
+}
+
+(function () {
+    lightbox(
+        '.kg-image-card > .kg-image[width][height], .kg-gallery-image > img'
+    );
+})();