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gallery.js
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gallery.js
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define(['jquery', 'nunjucks', 'base/ui', 'moment'],
function ($, nunjucks, UI, moment) {
'use strict';
var Gallery = function(options) {
options = options || {};
options.mainGallery = options.mainGallery || '.main-gallery';
options.itemSelector = options.itemSelector || 'div.make';
options.gutterSize = options.gutterSize || '.gutter-sizer';
options.hiddenClass = options.hiddenClass || 'packery-hide';
options.makeView = options.makeView || 'make-teach.html';
options.makeUrl = options.makeUrl || $('body').data('endpoint') || 'https://makeapi.webmaker.org';
options.defaultSearch = options.defaultSearch || 'webmaker:recommended';
options.limit = options.limit || 12;
var self = this;
var banner = document.querySelector(options.banner),
mainGallery = document.querySelector(options.mainGallery),
$mainGallery = $(mainGallery),
$loadMore = $('.load-more'),
$loading = $('.loading-cat'),
$emptyMessage = $('.no-makes-found');
// MakeAPI
var make = new Make({
apiURL: options.makeUrl
}),
isLastPage = false,
searchOptions = {
limit: options.limit,
sortByField: ['createdAt', 'desc'],
page: 1
};
// Packery
var packery = new Packery(mainGallery, {
itemSelector: options.itemSelector,
gutter: options.gutterSize
});
// Which items are large on the front page?
var FRONTPAGE_LARGE = [2,3];
// Nunjucks
// Todo - nunjucks middleware
var makeView = 'make-templates/' + options.makeView;
nunjucks.env = new nunjucks.Environment(new nunjucks.HttpLoader('/views', true));
function onLoadUI() {
packery.off('layoutComplete', onLoadUI);
$loading.fadeOut();
$('.' + options.hiddenClass).removeClass(options.hiddenClass);
if (isLastPage) {
$loadMore.hide();
} else {
$loadMore.show();
}
}
function generateGravatar(hash) {
// TODO: Combine with makeapi-webmaker.js into universal module
var DEFAULT_AVATAR = "https%3A%2F%2Fstuff.webmaker.org%2Favatars%2Fwebmaker-avatar-44x44.png",
DEFAULT_SIZE = 44;
return "https://secure.gravatar.com/avatar/" + hash + "?s=" + DEFAULT_SIZE + "&d=" + DEFAULT_AVATAR;
}
function resultsCallback(err, data, total) {
var isStickySearch = (searchOptions.tagPrefix === options.stickyPrefix),
itemString = '',
frag = document.createElement('div'),
allItems,
i,
l;
$loading.hide();
if (err || !data.length) {
$emptyMessage.fadeIn();
return;
}
isLastPage = searchOptions.page >= Math.ceil(total / searchOptions.limit);
if (isStickySearch) {
searchOptions.tags = options.defaultSearch;
searchOptions.page = 0;
isLastPage = false; //We always want to load more for stickies.
}
for (i = 0, l = data.length; i < l; i++) {
if (data[i]) {
if (data[i].tags.guide) {
data[i].type = 'guide';
} else {
data[i].type = data[i].contentType.replace(/application\/x\-/g, '');
}
data[i].avatar = generateGravatar(data[i].emailHash);
data[i].updatedAt = moment(data[i].updatedAt).fromNow();
data[i].createdAt = moment(data[i].createdAt).fromNow();
data[i].remixurl = data[i].url + '/remix';
if (isStickySearch && FRONTPAGE_LARGE.indexOf(i) > -1) {
data[i].size = "large";
}
itemString += nunjucks.env.render(makeView, {
make: data[i]
});
}
}
frag.innerHTML = itemString;
allItems = frag.querySelectorAll(options.itemSelector);
$mainGallery.append(allItems);
packery.appended(allItems);
packery.layout();
onLoadUI();
}
// Export
self.searchOptions = searchOptions;
self.packery = packery;
self.make = make;
self.search = function(opts) {
opts = opts || {};
if (opts.sticky) {
searchOptions.tagPrefix = options.stickyPrefix;
} else if (options.stickyPrefix) {
searchOptions.tagPrefix = [options.stickyPrefix, true]; // NOT stickyPrefix
}
make.find(searchOptions).then(resultsCallback);
};
// Set up packery initially
packery.on('layoutComplete', onLoadUI);
if (banner) {
packery.stamp(banner);
}
packery.layout();
// Set up load more
$loadMore.click(function() {
searchOptions.page++;
$loading.show();
self.search({
sticky: false
});
});
};
return Gallery;
});