allow multiple control elements, document usage of global controls (#184, #204)

2 files changed, 135 insertions, 99 deletions

diff --git a/js/reveal.js b/js/reveal.js
index 2507b22..b54536e 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -153,10 +153,10 @@ var Reveal = (function(){
 		if( !dom.wrapper.querySelector( '.controls' ) && config.controls ) {
 			var controlsElement = document.createElement( 'aside' );
 			controlsElement.classList.add( 'controls' );
-			controlsElement.innerHTML = '<div class="left"></div>' +
-										'<div class="right"></div>' +
-										'<div class="up"></div>' +
-										'<div class="down"></div>';
+			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 );
 		}
 
@@ -180,10 +180,14 @@ var Reveal = (function(){
 
 		if ( config.controls ) {
 			dom.controls = document.querySelector( '.reveal .controls' );
-			dom.controlsLeft = document.querySelector( '.reveal .controls .left' );
-			dom.controlsRight = document.querySelector( '.reveal .controls .right' );
-			dom.controlsUp = document.querySelector( '.reveal .controls .up' );
-			dom.controlsDown = document.querySelector( '.reveal .controls .down' );
+
+			// There can be multiple instances of controls throughout the page
+			dom.controlsLeft = toArray( document.querySelectorAll( '.navigate-left' ) );
+			dom.controlsRight = toArray( document.querySelectorAll( '.navigate-right' ) );
+			dom.controlsUp = toArray( document.querySelectorAll( '.navigate-up' ) );
+			dom.controlsDown = toArray( document.querySelectorAll( '.navigate-down' ) );
+			dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) );
+			dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) );
 		}
 	}
 
@@ -354,10 +358,12 @@ var Reveal = (function(){
 		}
 
 		if ( config.controls && dom.controls ) {
-			dom.controlsLeft.addEventListener( 'click', preventAndForward( navigateLeft ), false );
-			dom.controlsRight.addEventListener( 'click', preventAndForward( navigateRight ), false );
-			dom.controlsUp.addEventListener( 'click', preventAndForward( navigateUp ), false );
-			dom.controlsDown.addEventListener( 'click', preventAndForward( navigateDown ), false );
+			dom.controlsLeft.forEach( function( el ) { 		el.addEventListener( 'click', preventAndForward( navigateLeft ), false ); 		} );
+			dom.controlsRight.forEach( function( el ) { 	el.addEventListener( 'click', preventAndForward( navigateRight ), false ); 		} );
+			dom.controlsUp.forEach( function( el ) { 		el.addEventListener( 'click', preventAndForward( navigateUp ), false ); 		} );
+			dom.controlsDown.forEach( function( el ) { 		el.addEventListener( 'click', preventAndForward( navigateDown ), false ); 		} );
+			dom.controlsPrev.forEach( function( el ) { 		el.addEventListener( 'click', preventAndForward( navigatePrev ), false ); 		} );
+			dom.controlsNext.forEach( function( el ) { 		el.addEventListener( 'click', preventAndForward( navigateNext ), false ); 		} );
 		}
 	}
 
@@ -377,10 +383,12 @@ var Reveal = (function(){
 		}
 
 		if ( config.controls && dom.controls ) {
-			dom.controlsLeft.removeEventListener( 'click', preventAndForward( navigateLeft ), false );
-			dom.controlsRight.removeEventListener( 'click', preventAndForward( navigateRight ), false );
-			dom.controlsUp.removeEventListener( 'click', preventAndForward( navigateUp ), false );
-			dom.controlsDown.removeEventListener( 'click', preventAndForward( navigateDown ), false );
+			dom.controlsLeft.forEach( function( el ) { 		el.removeEventListener( 'click', preventAndForward( navigateLeft ), false ); 		} );
+			dom.controlsRight.forEach( function( el ) { 	el.removeEventListener( 'click', preventAndForward( navigateRight ), false ); 		} );
+			dom.controlsUp.forEach( function( el ) { 		el.removeEventListener( 'click', preventAndForward( navigateUp ), false ); 			} );
+			dom.controlsDown.forEach( function( el ) { 		el.removeEventListener( 'click', preventAndForward( navigateDown ), false ); 		} );
+			dom.controlsPrev.forEach( function( el ) { 		el.removeEventListener( 'click', preventAndForward( navigatePrev ), false ); 		} );
+			dom.controlsNext.forEach( function( el ) { 		el.removeEventListener( 'click', preventAndForward( navigateNext ), false ); 		} );
 		}
 	}
 
@@ -395,6 +403,19 @@ var Reveal = (function(){
 	}
 
 	/**
+	 * Converts the target object to an array.
+	 */
+	function toArray( o ) {
+		return Array.prototype.slice.call( o );
+	}
+
+	function each( targets, method, args ) {
+		targets.forEach( function( el ) {
+			el[method].apply( el, args );
+		} );
+	}
+
+	/**
 	 * Measures the distance in pixels between point a
 	 * and point b.
 	 *
@@ -865,15 +886,23 @@ var Reveal = (function(){
 			var routes = availableRoutes();
 
 			// Remove the 'enabled' class from all directions
-			[ dom.controlsLeft, dom.controlsRight, dom.controlsUp, dom.controlsDown ].forEach( function( node ) {
+			dom.controlsLeft.concat( dom.controlsRight )
+							.concat( dom.controlsUp )
+							.concat( dom.controlsDown )
+							.concat( dom.controlsPrev )
+							.concat( dom.controlsNext ).forEach( function( node ) {
 				node.classList.remove( 'enabled' );
 			} );
 
 			// Add the 'enabled' class to the available routes
-			if( routes.left ) dom.controlsLeft.classList.add( 'enabled' );
-			if( routes.right ) dom.controlsRight.classList.add( 'enabled' );
-			if( routes.up ) dom.controlsUp.classList.add( 'enabled' );
-			if( routes.down ) dom.controlsDown.classList.add( 'enabled' );
+			if( routes.left ) dom.controlsLeft.forEach( function( el ) { 	el.classList.add( 'enabled' );		} );
+			if( routes.right ) dom.controlsRight.forEach( function( el ) { 	el.classList.add( 'enabled' );		} );
+			if( routes.up ) dom.controlsUp.forEach( function( el ) { 		el.classList.add( 'enabled' );		} );
+			if( routes.down ) dom.controlsDown.forEach( function( el ) { 	el.classList.add( 'enabled' );		} );
+
+			// Prev/next buttons
+			if( routes.left || routes.up ) dom.controlsPrev.forEach( function( el ) { 		el.classList.add( 'enabled' );		} );
+			if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { 	el.classList.add( 'enabled' );		} );
 
 		}
 	}
diff --git a/js/reveal.min.js b/js/reveal.min.js
index 74627ea..948c411 100644
--- a/js/reveal.min.js
+++ b/js/reveal.min.js
@@ -5,82 +5,89 @@
  *
  * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
  */
-var Reveal=(function(){var m=".reveal .slides>section",b=".reveal .slides>section.present>section",T={controls:true,progress:true,history:false,keyboard:true,overview:true,center:false,loop:false,autoSlide:0,mouseWheel:true,rollingLinks:true,theme:null,transition:"default",dependencies:[]},aa=T.autoSlide,n=0,e=0,z,H,am=[],f={},V="WebkitPerspective" in document.body.style||"MozPerspective" in document.body.style||"msPerspective" in document.body.style||"OPerspective" in document.body.style||"perspective" in document.body.style,o="WebkitTransform" in document.body.style||"MozTransform" in document.body.style||"msTransform" in document.body.style||"OTransform" in document.body.style||"transform" in document.body.style,A=0,l=0,E=0,ae={startX:0,startY:0,startSpan:0,startCount:0,handled:false,threshold:80};
-function j(an){if((!o&&!V)){document.body.setAttribute("class","no-transforms");return;}u(T,an);d();X();}function Q(){f.theme=document.querySelector("#theme");
-f.wrapper=document.querySelector(".reveal");if(!f.wrapper.querySelector(".progress")&&T.progress){var aq=document.createElement("div");aq.classList.add("progress");
-aq.innerHTML="<span></span>";f.wrapper.appendChild(aq);}if(!f.wrapper.querySelector(".controls")&&T.controls){var ap=document.createElement("aside");ap.classList.add("controls");
-ap.innerHTML='<div class="left"></div><div class="right"></div><div class="up"></div><div class="down"></div>';f.wrapper.appendChild(ap);}if(!f.wrapper.querySelector(".state-background")){var ao=document.createElement("div");
-ao.classList.add("state-background");f.wrapper.appendChild(ao);}if(!f.wrapper.querySelector(".pause-overlay")){var an=document.createElement("div");an.classList.add("pause-overlay");
-f.wrapper.appendChild(an);}f.progress=document.querySelector(".reveal .progress");f.progressbar=document.querySelector(".reveal .progress span");if(T.controls){f.controls=document.querySelector(".reveal .controls");
-f.controlsLeft=document.querySelector(".reveal .controls .left");f.controlsRight=document.querySelector(".reveal .controls .right");f.controlsUp=document.querySelector(".reveal .controls .up");
-f.controlsDown=document.querySelector(".reveal .controls .down");}}function d(){if(navigator.userAgent.match(/(iphone|ipod|android)/i)){document.documentElement.style.overflow="scroll";
-document.body.style.height="120%";window.addEventListener("load",af,false);window.addEventListener("orientationchange",af,false);}}function X(){var ao=[],at=[];
-for(var ap=0,an=T.dependencies.length;ap<an;ap++){var aq=T.dependencies[ap];if(!aq.condition||aq.condition()){if(aq.async){at.push(aq.src);}else{ao.push(aq.src);
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-}I();}if(ao.length){head.ready(ar);head.js.apply(null,ao);}else{ar();}}function I(){Q();F();L();R();K();P();setTimeout(function(){s("ready",{indexh:n,indexv:e,currentSlide:H});
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-if(T.keyboard){document.addEventListener("keydown",aj,false);}if(T.progress&&f.progress){f.progress.addEventListener("click",r(ak),false);}if(T.controls&&f.controls){f.controlsLeft.addEventListener("click",r(C),false);
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-}while(aq.length){document.documentElement.classList.remove(aq.pop());}if(T.progress&&f.progress){f.progressbar.style.width=(n/(document.querySelectorAll(m).length-1))*window.innerWidth+"px";
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-}var ar=ao[aw].getAttribute("data-autoslide");if(ar){aa=parseInt(ar);}else{aa=T.autoSlide;}}else{aw=0;}return aw;}function t(){if(T.controls&&f.controls){var an=h();
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-},getCurrentSlide:function(){return H;},getQueryHash:function(){var an={};location.search.replace(/[A-Z0-9]+?=(\w*)/gi,function(ao){an[ao.split("=").shift()]=ao.split("=").pop();
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