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strapdown.js
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strapdown.js
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;(function(window, document) {
//////////////////////////////////////////////////////////////////////
//
// Shims for IE < 9
//
document.head = document.getElementsByTagName('head')[0];
if (!('getElementsByClassName' in document)) {
document.getElementsByClassName = function(name) {
function getElementsByClassName(node, classname) {
var a = [];
var re = new RegExp('(^| )'+classname+'( |$)');
var els = node.getElementsByTagName("*");
for(var i=0,j=els.length; i<j; i++)
if(re.test(els[i].className))a.push(els[i]);
return a;
}
return getElementsByClassName(document.body, name);
}
}
//////////////////////////////////////////////////////////////////////
//
// Get user elements we need
//
var markdownEl = document.getElementsByTagName('xmp')[0] || document.getElementsByTagName('textarea')[0],
titleEl = document.getElementsByTagName('title')[0],
scriptEls = document.getElementsByTagName('script'),
navbarEl = document.getElementsByClassName('navbar')[0];
if (!markdownEl) {
console.warn('No embedded Markdown found in this document for Strapdown.js to work on! Visit http://strapdownjs.com/ to learn more.');
return;
}
// Hide body until we're done fiddling with the DOM
document.body.style.display = 'none';
//////////////////////////////////////////////////////////////////////
//
// <head> stuff
//
// Use <meta> viewport so that Bootstrap is actually responsive on mobile
var metaEl = document.createElement('meta');
metaEl.name = 'viewport';
metaEl.content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0';
if (document.head.firstChild)
document.head.insertBefore(metaEl, document.head.firstChild);
else
document.head.appendChild(metaEl);
// Get origin of script
var origin = '';
for (var i = 0; i < scriptEls.length; i++) {
if (scriptEls[i].src.match('strapdown')) {
origin = scriptEls[i].src;
}
}
var originBase = origin.substr(0, origin.lastIndexOf('/'));
// Get theme
var theme = markdownEl.getAttribute('theme') || 'bootstrap';
theme = theme.toLowerCase();
// Stylesheets
var linkEl = document.createElement('link');
linkEl.href = originBase + '/themes/'+theme+'.min.css';
linkEl.rel = 'stylesheet';
document.head.appendChild(linkEl);
var linkEl = document.createElement('link');
linkEl.href = originBase + '/strapdown.css';
linkEl.rel = 'stylesheet';
document.head.appendChild(linkEl);
var linkEl = document.createElement('link');
linkEl.href = originBase + '/themes/bootstrap-responsive.min.css';
linkEl.rel = 'stylesheet';
document.head.appendChild(linkEl);
//////////////////////////////////////////////////////////////////////
//
// <body> stuff
//
var markdown = markdownEl.textContent || markdownEl.innerText;
var newNode = document.createElement('div');
newNode.className = 'container';
newNode.id = 'content';
document.body.replaceChild(newNode, markdownEl);
// Insert navbar if there's none
var newNode = document.createElement('div');
newNode.className = 'navbar navbar-fixed-top';
if (!navbarEl && titleEl) {
newNode.innerHTML = '<div class="navbar-inner"> <div class="container"> <div id="headline" class="brand"> </div> </div> </div>';
document.body.insertBefore(newNode, document.body.firstChild);
var title = titleEl.innerHTML;
var headlineEl = document.getElementById('headline');
if (headlineEl)
headlineEl.innerHTML = title;
}
//////////////////////////////////////////////////////////////////////
//
// Markdown!
//
// Generate Markdown
var html = marked(markdown);
document.getElementById('content').innerHTML = html;
// Prettify
var codeEls = document.getElementsByTagName('code');
for (var i=0, ii=codeEls.length; i<ii; i++) {
var codeEl = codeEls[i];
var lang = codeEl.className;
codeEl.className = 'prettyprint lang-' + lang;
}
prettyPrint();
// Style tables
var tableEls = document.getElementsByTagName('table');
for (var i=0, ii=tableEls.length; i<ii; i++) {
var tableEl = tableEls[i];
tableEl.className = 'table table-striped table-bordered';
}
// All done - show body
document.body.style.display = '';
})(window, document);