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Make the less loader only load particular less files once

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This commit is contained in:
Caleb James DeLisle 2018-06-07 15:49:59 +02:00
parent 56836b2e28
commit 0c8ce27f24
1 changed files with 18 additions and 2 deletions
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20
www/common/LessLoader.js
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@ -49,6 +49,7 @@ define([
if (ua[0].indexOf(':') === -1 && ua[0].indexOf('/') && parent) {
ua[0] = parent.replace(/\/[^\/]*$/, '/') + ua[0];
}
ua[0] = ua[0].replace(/^\/\.\.\//, '/');
var out = ua.join('#');
//console.log(url + " --> " + out);
return out;
@ -91,17 +92,32 @@ define([
};
var lessEngine;
var tempCache = { key: Math.random() };
var getLessEngine = function (cb) {
if (lessEngine) {
cb(lessEngine);
} else {
require(['/bower_components/less/dist/less.min.js'], function (Less) {
if (lessEngine) { return void cb(lessEngine); }
lessEngine = Less;
var doXHR = lessEngine.FileManager.prototype.doXHR;
lessEngine.FileManager.prototype.doXHR = function (url, type, callback, errback) {
url = fixURL(url);
//console.log("xhr: " + url);
return doXHR(url, type, callback, errback);
var cached = tempCache[url];
if (cached && cached.res) {
var res = cached.res;
return void setTimeout(function () { callback(res[0], res[1]); });
}
if (cached) { return void cached.queue.push(callback); }
cached = tempCache[url] = { queue: [ callback ], res: undefined };
return doXHR(url, type, function (text, lastModified) {
cached.res = [ text, lastModified ];
var queue = cached.queue;
cached.queue = [];
queue.forEach(function (f) {
setTimeout(function () { f(text, lastModified); });
});
}, errback);
};
cb(lessEngine);
});