discourse/public/javascripts/count.js

53 lines
1.4 KiB
JavaScript

/* global discourseUrl:true */
(function() {
// Discover the URLs we want counts for
var links = document.getElementsByTagName("a"),
countFor = [];
for(var i=0; i<links.length; i++) {
var link = links[i],
href = link.href;
if (href && href.length) {
if (/#discourse-comments$/.test(href)) {
countFor.push(href);
}
}
var dataEmbed = link.getAttribute('data-discourse-embed-url');
if (dataEmbed && dataEmbed.length) {
countFor.push(dataEmbed);
}
}
// JSONP callback to update counts
window.discourseUpdateCounts = function(result) {
if (result && result.counts) {
var byUrl = result.counts;
for (var i=0; i<links.length; i++) {
var link = links[i],
linkCount = byUrl[link.href] || byUrl[link.href.replace(/\/#/, '#')];
if (linkCount) {
var t = document.createTextNode(" (" + linkCount + ")");
link.appendChild(t);
}
}
}
};
if (countFor.length > 0) {
// Send JSONP request for the counts
var d = document.createElement('script');
d.src = discourseUrl + "embed/count?callback=discourseUpdateCounts&";
for (var j=0; j<countFor.length; j++) {
d.src += "&" + "embed_url[]=" + encodeURIComponent(countFor[j]);
}
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(d);
}
})();