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Minor refactoring

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Removed some code duplication
This commit is contained in:
Guillaume Turri 2013-07-28 22:41:55 +02:00
parent 7d19b4f7ce
commit 04b9e444d9
2 changed files with 30 additions and 35 deletions
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61
js/reveal.js
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@ -193,49 +193,26 @@ var Reveal = (function(){
dom.slides = document.querySelector( '.reveal .slides' );
// Background element
if( !document.querySelector( '.reveal .backgrounds' ) ) {
dom.background = document.createElement( 'div' );
dom.background.classList.add( 'backgrounds' );
dom.wrapper.appendChild( dom.background );
}
dom.background = initializeNode(dom.wrapper, 'div', 'backgrounds', null);
// Progress bar
if( !dom.wrapper.querySelector( '.progress' ) ) {
var progressElement = document.createElement( 'div' );
progressElement.classList.add( 'progress' );
progressElement.innerHTML = '<span></span>';
dom.wrapper.appendChild( progressElement );
}
dom.progress = initializeNode(dom.wrapper, 'div', 'progress', '<span></span>');
dom.progressbar = dom.progress.querySelector('span');
// Arrow controls
if( !dom.wrapper.querySelector( '.controls' ) ) {
var controlsElement = document.createElement( 'aside' );
controlsElement.classList.add( 'controls' );
controlsElement.innerHTML = '<div class="navigate-left"></div>' +
'<div class="navigate-right"></div>' +
'<div class="navigate-up"></div>' +
'<div class="navigate-down"></div>';
dom.wrapper.appendChild( controlsElement );
}
initializeNode(dom.wrapper, 'aside', 'controls',
'<div class="navigate-left"></div>' +
'<div class="navigate-right"></div>' +
'<div class="navigate-up"></div>' +
'<div class="navigate-down"></div>');
// State background element [DEPRECATED]
if( !dom.wrapper.querySelector( '.state-background' ) ) {
var stateBackgroundElement = document.createElement( 'div' );
stateBackgroundElement.classList.add( 'state-background' );
dom.wrapper.appendChild( stateBackgroundElement );
}
initializeNode(dom.wrapper, 'div', 'state-background', null);
// Overlay graphic which is displayed during the paused mode
if( !dom.wrapper.querySelector( '.pause-overlay' ) ) {
var pausedElement = document.createElement( 'div' );
pausedElement.classList.add( 'pause-overlay' );
dom.wrapper.appendChild( pausedElement );
}
initializeNode(dom.wrapper, 'div', 'pause-overlay', null);
// Cache references to elements
dom.progress = document.querySelector( '.reveal .progress' );
dom.progressbar = document.querySelector( '.reveal .progress span' );
if ( config.controls ) {
dom.controls = document.querySelector( '.reveal .controls' );
@ -250,6 +227,24 @@ var Reveal = (function(){
}
function initializeNode(container, tagname, classname, innerHTML){
var node = container.querySelector('.' + classname);
if( !node ){
node = buildNode(tagname, classname, innerHTML);
container.appendChild(node);
}
return node;
}
function buildNode(tagname, classname, innerHTML){
var node = document.createElement(tagname);
node.classList.add(classname);
if(innerHTML !== null){
node.innerHTML = innerHTML;
}
return node;
}
/**
* Creates the slide background elements and appends them
* to the background container. One element is created per

4
js/reveal.min.js vendored
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