Team:HSAAHNU Anhui/inject.js

From 2014hs.igem.org

(Difference between revisions)
m (breakpoint insert)
(analyze anchor)
Line 95: Line 95:
function loadNewPage (href) {
function loadNewPage (href) {
-
   alert(href);
+
   alert(JSON.stringify(href));
 +
}
 +
 
 +
function startsWith (lhs, rhs) {
 +
  return lhs.substr(0, rhs.length) === rhs;
 +
}
 +
 
 +
function analyzeAnchor (href) {
 +
  var basePath = 'https://2014hs.igem.org/Team:HSAAHNU_Anhui';
 +
  var isOutsideLink = !startsWith(href, basePath);
 +
  if (isOutsideLink)
 +
    return false;
 +
 
 +
  var current = document.URL.substr(basePath.length).split('#');
 +
  var next = href.substr(basePath.length).split('#');
 +
 
 +
  var isSamePage = current[0] == next[0];
 +
  if (isSamePage)
 +
    return false;
 +
 
 +
  return {
 +
    path: next[0],
 +
    anchor: next[1]
 +
  };
}
}
function setupPJAXListener () {
function setupPJAXListener () {
-
alert('start to inject Pjax listener');
 
   $("a").click(function (event) {
   $("a").click(function (event) {
     var node = event.target;
     var node = event.target;
-
     if (node.href === null)
+
     var href = analyzeAnchor(node.href);
-
      return true;
+
     if (href === false)
-
 
+
-
     var isInlineAnchor = node.href[0] === '#';
+
-
    var isOutsiteAnchor = node.href[0] !== '/';
+
-
    if (isInlineAnchor || isOutsiteAnchor)
+
       return true;
       return true;
-
     loadNewPage(node.href);
+
     loadNewPage(href);
     return false;
     return false;
   });
   });

Revision as of 02:38, 30 May 2014

/* 

* Basically this script will do the following thing:
* Remove old styles.
* Apply common stylesheets.
* Update jQuery.
* move inner HTML of main tag to body tag for clarity.
* Clean up script tags in head tag for debugging purpose.
* Set up PJAX for better performance.
* Use PJAX.complete to set up page specific things.
*/

function removeOldStyles () { 

 function removeStyleNodes () {
   var styleNodes = document.head.getElementsByTagName('style');
   while (styleNodes.length !== 0) {
     document.head.removeChild(styleNodes[0]);
   }
 }

 function removelinkStylesheetNodes () {
   var linkNodes = document.head.getElementsByTagName('link');
   var nonStylesheetLinksCounter = 0;
   var iter = 0;
   while (linkNodes.length !== nonStylesheetLinksCounter) {
     var node = linkNodes[iter];
     if (node['rel'] === 'stylesheet')
       document.head.removeChild(node);
     else {
       nonStylesheetLinksCounter ++;
       iter ++;
     }
   }
 }

 removeStyleNodes();
 removelinkStylesheetNodes();

}

function applyCommonStyles () { 

 var stylesheetURLs = [
   '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'
 ];

 stylesheetURLs.forEach(function (url) {
   var tag = document.createElement('link');
   tag.href = url;
   tag.rel = 'stylesheet';
   document.head.appendChild(tag);
 });

}

function updateJQuery () { 

 var tag = document.createElement('script');
 tag.src = 'http://code.jquery.com/jquery-1.11.1.min.js';
 document.head.appendChild(tag);

}

function relocateMainDocument () { 

 var main = document.body.getElementsByTagName('main')[0];
 document.body.innerHTML = main.innerHTML;

}

var JQueryLoadingTime = 0; function waitForJQueryToBeUpdated () { 

 //16 seconds is long enough.
 var isLoadFailed = JQueryLoadingTime >= 32;
 if (isLoadFailed)
   alert('One component of this page failed to load. Please refresh!');

 var isJQueryUpdated = $.fn.jquery === '1.11.1';
 if (isJQueryUpdated)
   resumeInitAfterJQueryUpdated();
 else {
   JQueryLoadingTime ++;
   setTimeout(waitForJQueryToBeUpdated, 500);
 }

}

$(document).ready(function () { 

 removeOldStyles();
 applyCommonStyles();
 updateJQuery();
 relocateMainDocument();
 waitForJQueryToBeUpdated();

});

function cleanUpScriptTags () { 

 var scriptNodes = document.head.getElementsByTagName('script');
 while (scriptNodes.length !== 0) {
   document.head.removeChild(scriptNodes[0]);
 }

}

function loadNewPage (href) { 

 alert(JSON.stringify(href));

}

function startsWith (lhs, rhs) { 

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

}

function analyzeAnchor (href) { 

 var basePath = 'https://2014hs.igem.org/Team:HSAAHNU_Anhui';
 var isOutsideLink = !startsWith(href, basePath);
 if (isOutsideLink)
   return false;

 var current = document.URL.substr(basePath.length).split('#');
 var next = href.substr(basePath.length).split('#');

 var isSamePage = current[0] == next[0];
 if (isSamePage)
   return false;

 return {
   path: next[0],
   anchor: next[1]
 };

}

function setupPJAXListener () { 

 $("a").click(function (event) {
   var node = event.target;
   var href = analyzeAnchor(node.href);
   if (href === false)
     return true;

   loadNewPage(href);
   return false;
 });

}

function resumeInitAfterJQueryUpdated () { 

 cleanUpScriptTags();
 setupPJAXListener();

}

Retrieved from "http://2014hs.igem.org/Team:HSAAHNU_Anhui/inject.js"