agneta-angularjs
Version:
Create your agneta applications with AngularJS
246 lines (203 loc) • 6.63 kB
JavaScript
/*global PhotoSwipeUI_Default*/
/*global PhotoSwipe*/
module.exports = function(options) {
var gallerySelector = options.selector;
var swiper = options.swiper;
var parseThumbnailElements = function(el) {
var thumbElements = el.querySelectorAll('[ui-gallery-item]');
var numNodes = thumbElements.length,
items = [],
figureEl,
linkEl,
size,
item;
for (var i = 0; i < numNodes; i++) {
figureEl = thumbElements[i]; // <figure> element
// include only element nodes
if (figureEl.nodeType !== 1) {
continue;
}
linkEl = figureEl.children[0]; // <a> element
item = {
src: linkEl.getAttribute('href')
};
size = linkEl.getAttribute('data-size') || '1000x1000';
size = size.split('x');
item.w = parseInt(size[0], 10) || 1000;
item.h = parseInt(size[1], 10) || 1000;
// create slide object
if (figureEl.children.length > 1) {
// <figcaption> content
item.title = figureEl.children[1].innerHTML;
}
if (linkEl.children.length > 0) {
// <img> thumbnail element, retrieving thumbnail url
item.msrc = linkEl.children[0].getAttribute(options.src || 'src');
}
item.el = figureEl; // save link to element for getThumbBoundsFn
items.push(item);
}
return items;
};
// find nearest parent element
var closest = function closest(el, fn) {
return el && (fn(el) ? el : closest(el.parentNode, fn));
};
// triggers when user clicks on thumbnail
var onThumbnailsClick = function(e) {
e = e || window.event;
e.preventDefault ? e.preventDefault() : (e.returnValue = false);
var eTarget = e.target || e.srcElement;
// find root element of slide
var clickedListItem = closest(eTarget, function(el) {
//console.log(el.getAttribute('ui-gallery-item'));
return el.getAttribute('ui-gallery-item') != null;
});
if (!clickedListItem) {
return;
}
var parentNode = closest(eTarget, function(el) {
return el.getAttribute('ui-gallery') != null;
});
if (!parentNode) {
return;
}
var childNodes = parentNode.querySelectorAll('[ui-gallery-item]');
// find index of clicked item by looping through all child nodes
// alternatively, you may define index via data- attribute
var clickedGallery = parentNode,
numChildNodes = childNodes.length,
nodeIndex = 0,
index;
for (var i = 0; i < numChildNodes; i++) {
if (childNodes[i].nodeType !== 1) {
continue;
}
if (childNodes[i] === clickedListItem) {
index = nodeIndex;
break;
}
nodeIndex++;
}
if (index >= 0) {
// open PhotoSwipe if valid index found
openPhotoSwipe(index, clickedGallery);
}
return false;
};
// parse picture index and gallery index from URL (#&pid=1&gid=2)
var photoswipeParseHash = function() {
var hash = window.location.hash.substring(1),
params = {};
if (hash.length < 5) {
return params;
}
var vars = hash.split('&');
for (var i = 0; i < vars.length; i++) {
if (!vars[i]) {
continue;
}
var pair = vars[i].split('=');
if (pair.length < 2) {
continue;
}
params[pair[0]] = pair[1];
}
if (params.gid) {
params.gid = parseInt(params.gid, 10);
}
return params;
};
var openPhotoSwipe = function(
index,
galleryElement,
disableAnimation,
fromURL
) {
var pswpElement = document.querySelectorAll('.pswp')[0],
gallery,
options,
items;
items = parseThumbnailElements(galleryElement);
// define options (if needed)
options = {
/* "showHideOpacity" uncomment this If dimensions of your small thumbnail don't match dimensions of large image */
//showHideOpacity:true,
// Buttons/elements
closeEl: true,
captionEl: true,
fullscreenEl: true,
zoomEl: true,
history: false,
shareEl: true,
counterEl: true,
arrowEl: true,
preloaderEl: true,
// define gallery index (for URL)
galleryUID: galleryElement.getAttribute('data-pswp-uid'),
getThumbBoundsFn: function(index) {
// See Options -> getThumbBoundsFn section of documentation for more info
var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail
pageYScroll =
window.pageYOffset || document.documentElement.scrollTop,
rect = thumbnail.getBoundingClientRect();
return {
x: rect.left,
y: rect.top + pageYScroll,
w: rect.width
};
}
};
// PhotoSwipe opened from URL
if (fromURL) {
if (options.galleryPIDs) {
// parse real index when custom PIDs are used
// http://photoswipe.com/documentation/faq.html#custom-pid-in-url
for (var j = 0; j < items.length; j++) {
if (items[j].pid == index) {
options.index = j;
break;
}
}
} else {
// in URL indexes start from 1
options.index = parseInt(index, 10) - 1;
}
} else {
options.index = parseInt(index, 10);
}
// exit if index not found
if (isNaN(options.index)) {
return;
}
if (disableAnimation) {
options.showAnimationDuration = 0;
}
console.log(items, options);
// Pass data to PhotoSwipe and initialize it
gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
gallery.init();
/* EXTRA CODE (NOT FROM THE CORE) - UPDATE SWIPER POSITION TO THE CURRENT ZOOM_IN IMAGE (BETTER UI) */
// photoswipe event: Gallery unbinds events
// (triggers before closing animation)
gallery.listen('unbindEvents', function() {
// This is index of current photoswipe slide
var getCurrentIndex = gallery.getCurrentIndex();
// Update position of the slider
if (swiper) {
swiper.slideTo(getCurrentIndex, false);
}
});
};
// loop through all gallery elements and bind events
var galleryElements = document.querySelectorAll(gallerySelector);
for (var i = 0, l = galleryElements.length; i < l; i++) {
galleryElements[i].setAttribute('data-pswp-uid', i + 1);
galleryElements[i].onclick = onThumbnailsClick;
}
// Parse URL and open gallery if it contains #&pid=3&gid=1
var hashData = photoswipeParseHash();
if (hashData.pid && hashData.gid) {
openPhotoSwipe(hashData.pid, galleryElements[hashData.gid - 1], true, true);
}
};