Minor refactoring
Removed some code duplication
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61
js/reveal.js
61
js/reveal.js
@ -193,49 +193,26 @@ var Reveal = (function(){
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dom.slides = document.querySelector( '.reveal .slides' );
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// Background element
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if( !document.querySelector( '.reveal .backgrounds' ) ) {
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dom.background = document.createElement( 'div' );
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dom.background.classList.add( 'backgrounds' );
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dom.wrapper.appendChild( dom.background );
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}
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dom.background = initializeNode(dom.wrapper, 'div', 'backgrounds', null);
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// Progress bar
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if( !dom.wrapper.querySelector( '.progress' ) ) {
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var progressElement = document.createElement( 'div' );
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progressElement.classList.add( 'progress' );
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progressElement.innerHTML = '<span></span>';
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dom.wrapper.appendChild( progressElement );
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}
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dom.progress = initializeNode(dom.wrapper, 'div', 'progress', '<span></span>');
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dom.progressbar = dom.progress.querySelector('span');
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// Arrow controls
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if( !dom.wrapper.querySelector( '.controls' ) ) {
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var controlsElement = document.createElement( 'aside' );
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controlsElement.classList.add( 'controls' );
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controlsElement.innerHTML = '<div class="navigate-left"></div>' +
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'<div class="navigate-right"></div>' +
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'<div class="navigate-up"></div>' +
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'<div class="navigate-down"></div>';
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dom.wrapper.appendChild( controlsElement );
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}
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initializeNode(dom.wrapper, 'aside', 'controls',
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'<div class="navigate-left"></div>' +
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'<div class="navigate-right"></div>' +
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'<div class="navigate-up"></div>' +
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'<div class="navigate-down"></div>');
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// State background element [DEPRECATED]
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if( !dom.wrapper.querySelector( '.state-background' ) ) {
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var stateBackgroundElement = document.createElement( 'div' );
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stateBackgroundElement.classList.add( 'state-background' );
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dom.wrapper.appendChild( stateBackgroundElement );
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}
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initializeNode(dom.wrapper, 'div', 'state-background', null);
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// Overlay graphic which is displayed during the paused mode
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if( !dom.wrapper.querySelector( '.pause-overlay' ) ) {
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var pausedElement = document.createElement( 'div' );
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pausedElement.classList.add( 'pause-overlay' );
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dom.wrapper.appendChild( pausedElement );
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}
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initializeNode(dom.wrapper, 'div', 'pause-overlay', null);
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// Cache references to elements
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dom.progress = document.querySelector( '.reveal .progress' );
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dom.progressbar = document.querySelector( '.reveal .progress span' );
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if ( config.controls ) {
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dom.controls = document.querySelector( '.reveal .controls' );
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@ -250,6 +227,24 @@ var Reveal = (function(){
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}
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function initializeNode(container, tagname, classname, innerHTML){
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var node = container.querySelector('.' + classname);
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if( !node ){
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node = buildNode(tagname, classname, innerHTML);
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container.appendChild(node);
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}
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return node;
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}
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function buildNode(tagname, classname, innerHTML){
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var node = document.createElement(tagname);
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node.classList.add(classname);
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if(innerHTML !== null){
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node.innerHTML = innerHTML;
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}
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return node;
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}
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/**
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* Creates the slide background elements and appends them
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* to the background container. One element is created per
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4
js/reveal.min.js
vendored
4
js/reveal.min.js
vendored
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