Team:HSAAHNU Anhui/inject.js

From 2014hs.igem.org

Revision as of 05:38, 10 June 2014 by Selveskii (Talk | contribs)

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/*

* By Minsheng Liu from HSAAHNU_Anhui.
* Released under MIT License.
*/

function cleanup () {

 removeNodesFromHead('style');
 removeNodesFromHead('script');
 removeNodesFromHead('link', function (node) {
   var isStylesheet = node.rel === 'stylesheet';
   return isStylesheet;
 });

}

function loadResources () {

 generateResourceNodes(basicStyles, 'link', function (node, url) {
   node.href = url;
   node.rel = 'stylesheet';
 });
 generateResourceNodes(basicScripts, 'script', function (node, url) {
   node.src = url;
 });

 enableMobileDeviceSuport();
 callHTML5Shiv();

}

var scriptsLoadingTime = 0; function waitForScripts () {

 var isTimeout = scriptsLoadingTime > 160;
 if (isTimeout) {
   alert('Loading script timeout. Refresh or check your Internet connection.');
   return;
 }

 var isJQueryUpdated = window.hasOwnProperty('jQuery') &&
                       $.fn.jquery === '1.11.1';
 var isNProgressLoaded = window.hasOwnProperty('NProgress');

 if (isJQueryUpdated && isNProgressLoaded)
   loadPage(parseURL(document.URL));
 else {
   scriptsLoadingTime ++;
   setTimeout(waitForScripts, 100);
 }

}

$('document').ready(function () {

 cleanup();
 loadResources();
 waitForScripts();

});

function loadPage (path) {

 NProgress.start();
 path.fetch(function (err, data)) {
   if (err) {
     alert('Error happens when loading page!');
     return;
   }

   data = selectCore(PJAXSplitter.start, PJAXSplitter.end, data);
   document.body.innerHTML = data;
   doPageSpecificJobs();

   NProgress.done();
 });

}

function setupPJAXListener () {

 if (history === null) {
   alert('sorry but your browser does not support history api.');
   return;
 }

 $('a').click(goForwardListener);

}

function applyMetadata (metadata) {

 metadata = JSON.parse(metadata);

 metadata.title ? document.title = metadata.title : null;

}

function doPageSpecificJobs () {

 setupPJAXListener();
 applyMetadata($('#metadata').innerText);

}

//helper functions function removeNodesFromHead (tag, constriant) {

 constriant = constriant ? constriant
                         : function () { return true; };
 var nodes = document.head.getElementsByTagName(tag);
 var failedCounter = 0;
 var iterator = 0;
 while (nodes.length !== failedCounter) {
   var node = nodes[iterator];
   if (constriant(node))
     document.head.removeChild(node);
   else {
     failedCounter ++;
     iterator ++;
   }
 }

}

function generateResourceNodes (urls, tagname, process) {

 urls.forEach(function (url) {
   var node = document.createElement(tagname);
   process(node, url);
   document.head.appendChild(node);
 });

};

function enableMobileDeviceSupport () {

 var meta = document.createElement('meta');
 meta.name = 'viewport';
 meta.content = 'width=device-width, initial-scale=1';
 document.head.appendChild(meta);

}

 eval(html5shiv);

}

var pjaxCalledOnce = false; function goForwardListener (event) {

 var node = event.target;
 var url = parseURL(node.href);
 if (url === null)
   return true;

 history.pushState(null, null, node.href);
 loadPage(url);

 if (!pjaxCalledOnce) {
   pjaxCalledOnce = true;
   window.addEventListener('popstate', goBackListener);
 }
 return false;

}

function goBackListener (event) {

 var url = parseURL(document.URL);
 if (url === null)
   return;
 loadPage(parseURL(document.URL));

}

function checkURLForPJAX (url) {

 var isOutsideLink = !startsWith(href, basePath);
 if (isOutsideLink)
   return;

 var current = parseURL(document.URL);
 var next = parseURL(url);

 var isSamePage = current.path === next.path;
 if (isSamePage)
   return;
 else
   return next;

}

function parseURL (url) {

 var info = url.substr(basePath.length).split('#');
 return {
   path: info[0],
   anchor: info[1],
   fetch: function (callback) {
     var url = basePath + this.path + mediaWikiRawQuery;
     $.ajax(url).done(callback);
   }
 };

}

//utility functions function startsWith (lhs, rhs) {

 var isStartWith = lhs.substr(0, rhs.length) === rhs;
 return isStartWith;

}

function selectCore (from, to, str) {

 return str.split(from)[1].split(to)[0];

}

//magic "numbers" var basicStyles = [

 'http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css',
 'http://ricostacruz.com/nprogress/nprogress.css',
 '/Team:HSAAHNU_Anhui/normalize.css?action=raw&ctype=text/css'

];

var basicScripts = [

 'http://code.jquery.com/jquery-1.11.1.min.js',
 'http://ricostacruz.com/nprogress/nprogress.js'

];

var PJAXSplitter = {

 start: ,
 end:

};

var basePath = 'https://2014hs.igem.org/Team:HSAAHNU_Anhui'; var mediaWikiRawQuery = '?action=raw';