'slidechanged' event, added Reveal.addEventListener/Reveal.removeEventListener api methods

2 files changed, 75 insertions, 52 deletions

diff --git a/js/reveal.js b/js/reveal.js
index 4761595..5b985b5 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -78,13 +78,13 @@ var Reveal = (function(){
 		dom.controlsDown = document.querySelector( '#reveal .controls .down' );
 
 		// Bind all view events
-		document.addEventListener('keydown', onDocumentKeyDown, false);
-		document.addEventListener('touchstart', onDocumentTouchStart, false);
-		window.addEventListener('hashchange', onWindowHashChange, false);
-		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);
+		document.addEventListener( 'keydown', onDocumentKeyDown, false );
+		document.addEventListener( 'touchstart', onDocumentTouchStart, false );
+		window.addEventListener( 'hashchange', onWindowHashChange, false );
+		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 );
 
 		// Copy options over to our config object
 		extend( config, options );
@@ -504,10 +504,8 @@ var Reveal = (function(){
 
 			document.documentElement.classList.add( state[i] );
 
-			// Dispatch custom event
-			var event = document.createEvent( "HTMLEvents" );
-			event.initEvent( state[i], true, true );
-			document.dispatchEvent( event );
+			// Dispatch custom event matching the state's name
+			dispatchEvent( state[i] );
 		}
 
 		// Clean up the remaints of the previous state
@@ -529,6 +527,12 @@ var Reveal = (function(){
 		
 		clearTimeout( writeURLTimeout );
 		writeURLTimeout = setTimeout( writeURL, 1500 );
+
+		// Dispatch an event notifying observers of the change in slide
+		dispatchEvent( 'slidechanged', {
+			'indexh': indexh, 
+			'indexv': indexv
+		} );
 	}
 
 	/**
@@ -597,6 +601,17 @@ var Reveal = (function(){
 	}
 
 	/**
+	 * Dispatches an event of the specified type from the 
+	 * #reveal DOM element.
+	 */
+	function dispatchEvent( type, properties ) {
+		var event = document.createEvent( "HTMLEvents", 1, 2 );
+		event.initEvent( type, true, true );
+		extend( event, properties );
+		dom.wrapper.dispatchEvent( event );
+	}
+
+	/**
 	 * Navigate to the next slide fragment.
 	 * 
 	 * @return {Boolean} true if there was a next fragment,
@@ -736,7 +751,15 @@ var Reveal = (function(){
 		navigateLeft: navigateLeft,
 		navigateRight: navigateRight,
 		navigateUp: navigateUp,
-		navigateDown: navigateDown
+		navigateDown: navigateDown,
+
+		// Forward event binding to the reveal DOM element
+		addEventListener: function( type, listener, useCapture ) {
+			( dom.wrapper || document.querySelector( '#reveal' ) ).addEventListener( type, listener, useCapture );
+		},
+		removeEventListener: function( type, listener, useCapture ) {
+			( dom.wrapper || document.querySelector( '#reveal' ) ).removeEventListener( type, listener, useCapture );
+		}
 	};
 	
 })();
diff --git a/js/reveal.min.js b/js/reveal.min.js
index b055124..d26ad76 100644
--- a/js/reveal.min.js
+++ b/js/reveal.min.js
@@ -5,45 +5,45 @@
  * 
  * Copyright (C) 2012 Hakim El Hattab, http://hakim.se
  */
-var Reveal=(function(){var i="#reveal .slides>section",a="#reveal .slides>section.present>section",j=0,c=0,E={controls:false,progress:false,history:false,loop:false,mouseWheel:true,rollingLinks:true,transition:"default",theme:"default"},K=[],d={},F=document.body.style.perspectiveProperty!==undefined||document.body.style.WebkitPerspective!==undefined||document.body.style.MozPerspective!==undefined||document.body.style.msPerspective!==undefined||document.body.style.OPerspective!==undefined,k=document.body.style.transformProperty!==undefined||document.body.style.WebkitTransform!==undefined||document.body.style.MozTransform!==undefined||document.body.style.msTransform!==undefined||document.body.style.OTransform!==undefined,t=0,w=0;
-function g(M){if(!k&&!F){document.body.setAttribute("class","no-transforms");return;}d.wrapper=document.querySelector("#reveal");d.progress=document.querySelector("#reveal .progress");
+var Reveal=(function(){var i="#reveal .slides>section",a="#reveal .slides>section.present>section",j=0,c=0,F={controls:false,progress:false,history:false,loop:false,mouseWheel:true,rollingLinks:true,transition:"default",theme:"default"},L=[],d={},G=document.body.style.perspectiveProperty!==undefined||document.body.style.WebkitPerspective!==undefined||document.body.style.MozPerspective!==undefined||document.body.style.msPerspective!==undefined||document.body.style.OPerspective!==undefined,k=document.body.style.transformProperty!==undefined||document.body.style.WebkitTransform!==undefined||document.body.style.MozTransform!==undefined||document.body.style.msTransform!==undefined||document.body.style.OTransform!==undefined,u=0,x=0;
+function g(N){if(!k&&!G){document.body.setAttribute("class","no-transforms");return;}d.wrapper=document.querySelector("#reveal");d.progress=document.querySelector("#reveal .progress");
 d.progressbar=document.querySelector("#reveal .progress span");d.controls=document.querySelector("#reveal .controls");d.controlsLeft=document.querySelector("#reveal .controls .left");
 d.controlsRight=document.querySelector("#reveal .controls .right");d.controlsUp=document.querySelector("#reveal .controls .up");d.controlsDown=document.querySelector("#reveal .controls .down");
-document.addEventListener("keydown",J,false);document.addEventListener("touchstart",u,false);window.addEventListener("hashchange",r,false);d.controlsLeft.addEventListener("click",m(v),false);
-d.controlsRight.addEventListener("click",m(h),false);d.controlsUp.addEventListener("click",m(p),false);d.controlsDown.addEventListener("click",m(y),false);
-o(E,M);if(F===false){E.transition="linear";}if(E.controls){d.controls.style.display="block";}if(E.progress){d.progress.style.display="block";}if(E.transition!=="default"){d.wrapper.classList.add(E.transition);
-}if(E.theme!=="default"){d.wrapper.classList.add(E.theme);}if(E.mouseWheel){document.addEventListener("DOMMouseScroll",l,false);document.addEventListener("mousewheel",l,false);
-}if(E.rollingLinks){B();}A();}function o(N,M){for(var O in M){N[O]=M[O];}}function m(M){return function(N){N.preventDefault();M.call();};}function J(N){if(N.target.contentEditable!="inherit"||N.shiftKey||N.altKey||N.ctrlKey||N.metaKey){return;
-}var M=false;switch(N.keyCode){case 80:case 33:G();M=true;break;case 78:case 32:case 34:s();M=true;break;case 72:case 37:v();M=true;break;case 76:case 39:h();
-M=true;break;case 75:case 38:p();M=true;break;case 74:case 40:y();M=true;break;}if(M){N.preventDefault();}else{if(N.keyCode===27&&F){if(H()){I();}else{z();
-}N.preventDefault();}}}function u(P){if(P.touches.length===1){if(P.target.tagName.toLowerCase()==="a"||P.target.tagName.toLowerCase()==="img"){return;}P.preventDefault();
-var N={x:P.touches[0].clientX,y:P.touches[0].clientY};var M=window.innerWidth*0.3;var O=window.innerHeight*0.3;if(N.x<M){v();}else{if(N.x>window.innerWidth-M){h();
-}else{if(N.y<O){p();}else{if(N.y>window.innerHeight-O){y();}}}}b();}}function l(M){clearTimeout(t);t=setTimeout(function(){var N=M.detail||-M.wheelDelta;
-if(N>0){s();}else{G();}},100);}function r(M){A();}function B(){if(F){var N=document.querySelectorAll("#reveal .slides section a:not(.image)");for(var O=0,M=N.length;
-O<M;O++){var P=N[O];if(P.textContent&&!P.querySelector("img")&&(!P.className||!P.classList.contains(P,"roll"))){P.classList.add("roll");P.innerHTML='<span data-title="'+P.text+'">'+P.innerHTML+"</span>";
-}}}}function z(){d.wrapper.classList.add("overview");var M=Array.prototype.slice.call(document.querySelectorAll(i));for(var R=0,P=M.length;R<P;R++){var O=M[R],V="translateZ(-2500px) translate("+((R-j)*105)+"%, 0%)";
-O.setAttribute("data-index-h",R);O.style.display="block";O.style.WebkitTransform=V;O.style.MozTransform=V;O.style.msTransform=V;O.style.OTransform=V;O.style.transform=V;
-if(!O.classList.contains("stack")){O.addEventListener("click",x,true);}var U=Array.prototype.slice.call(O.querySelectorAll("section"));for(var Q=0,N=U.length;
-Q<N;Q++){var T=U[Q],S="translate(0%, "+((Q-c)*105)+"%)";T.setAttribute("data-index-h",R);T.setAttribute("data-index-v",Q);T.style.display="block";T.style.WebkitTransform=S;
-T.style.MozTransform=S;T.style.msTransform=S;T.style.OTransform=S;T.style.transform=S;T.addEventListener("click",x,true);}}}function I(){d.wrapper.classList.remove("overview");
-var P=Array.prototype.slice.call(document.querySelectorAll("#reveal .slides section"));for(var O=0,M=P.length;O<M;O++){var N=P[O];N.style.WebkitTransform="";
-N.style.MozTransform="";N.style.msTransform="";N.style.OTransform="";N.style.transform="";N.removeEventListener("click",x);}b();}function H(){return d.wrapper.classList.contains("overview");
-}function x(M){if(H()){M.preventDefault();I();j=this.getAttribute("data-index-h");c=this.getAttribute("data-index-v");b();}}function L(N,P){var R=Array.prototype.slice.call(document.querySelectorAll(N)),S=R.length;
-if(S){if(E.loop){P%=S;if(P<0){P=S+P;}}P=Math.max(Math.min(P,S-1),0);for(var Q=0;Q<S;Q++){var M=R[Q];if(H()===false){var T=Math.abs((P-Q)%(S-3))||0;M.style.display=T>3?"none":"block";
-}R[Q].classList.remove("past");R[Q].classList.remove("present");R[Q].classList.remove("future");if(Q<P){R[Q].classList.add("past");}else{if(Q>P){R[Q].classList.add("future");
-}}if(M.querySelector("section")){R[Q].classList.add("stack");}}R[P].classList.add("present");var O=R[P].getAttribute("data-state");if(O){K=K.concat(O.split(" "));
-}}else{P=0;}return P;}function b(){var Q=K.concat();K.length=0;j=L(i,j);c=L(a,c);stateLoop:for(var O=0,M=K.length;O<M;O++){for(var N=0;N<Q.length;N++){if(Q[N]===K[O]){Q.splice(N,1);
-continue stateLoop;}}document.documentElement.classList.add(K[O]);var P=document.createEvent("HTMLEvents");P.initEvent(K[O],true,true);document.dispatchEvent(P);
-}while(Q.length){document.documentElement.classList.remove(Q.pop());}if(E.progress){d.progressbar.style.width=(j/(document.querySelectorAll(i).length-1))*window.innerWidth+"px";
-}if(H()){z();}n();clearTimeout(w);w=setTimeout(f,1500);}function n(){var M=e();[d.controlsLeft,d.controlsRight,d.controlsUp,d.controlsDown].forEach(function(N){N.classList.remove("enabled");
-});if(M.left){d.controlsLeft.classList.add("enabled");}if(M.right){d.controlsRight.classList.add("enabled");}if(M.up){d.controlsUp.classList.add("enabled");
-}if(M.down){d.controlsDown.classList.add("enabled");}}function e(){var M=document.querySelectorAll(i);var N=document.querySelectorAll(a);return{left:j>0,right:j<M.length-1,up:c>0,down:c<N.length-1};
-}function A(){var M=window.location.hash.slice(2).split("/");j=parseInt(M[0])||0;c=parseInt(M[1])||0;C(j,c);}function f(){if(E.history){var M="/";if(j>0||c>0){M+=j;
-}if(c>0){M+="/"+c;}window.location.hash=M;}}function q(){if(document.querySelector(a+".present")){var N=document.querySelectorAll(a+".present .fragment:not(.visible)");
-if(N.length){N[0].classList.add("visible");return true;}}else{var M=document.querySelectorAll(i+".present .fragment:not(.visible)");if(M.length){M[0].classList.add("visible");
-return true;}}return false;}function D(){if(document.querySelector(a+".present")){var N=document.querySelectorAll(a+".present .fragment.visible");if(N.length){N[N.length-1].classList.remove("visible");
-return true;}}else{var M=document.querySelectorAll(i+".present .fragment.visible");if(M.length){M[M.length-1].classList.remove("visible");return true;}}return false;
-}function C(N,M){j=N===undefined?j:N;c=M===undefined?c:M;b();}function v(){if(H()||D()===false){j--;c=0;b();}}function h(){if(H()||q()===false){j++;c=0;
-b();}}function p(){if(H()||D()===false){c--;b();}}function y(){if(H()||q()===false){c++;b();}}function G(){if(D()===false){if(e().up){p();}else{var M=document.querySelector("#reveal .slides>section.past:nth-child("+j+")");
-if(M){c=(M.querySelectorAll("section").length+1)||0;j--;b();}}}}function s(){if(q()===false){e().down?y():h();}}return{initialize:g,navigateTo:C,navigateLeft:v,navigateRight:h,navigateUp:p,navigateDown:y};
-})();
\ No newline at end of file
+document.addEventListener("keydown",K,false);document.addEventListener("touchstart",v,false);window.addEventListener("hashchange",s,false);d.controlsLeft.addEventListener("click",m(w),false);
+d.controlsRight.addEventListener("click",m(h),false);d.controlsUp.addEventListener("click",m(q),false);d.controlsDown.addEventListener("click",m(z),false);
+p(F,N);if(G===false){F.transition="linear";}if(F.controls){d.controls.style.display="block";}if(F.progress){d.progress.style.display="block";}if(F.transition!=="default"){d.wrapper.classList.add(F.transition);
+}if(F.theme!=="default"){d.wrapper.classList.add(F.theme);}if(F.mouseWheel){document.addEventListener("DOMMouseScroll",l,false);document.addEventListener("mousewheel",l,false);
+}if(F.rollingLinks){C();}B();}function p(O,N){for(var P in N){O[P]=N[P];}}function m(N){return function(O){O.preventDefault();N.call();};}function K(O){if(O.target.contentEditable!="inherit"||O.shiftKey||O.altKey||O.ctrlKey||O.metaKey){return;
+}var N=false;switch(O.keyCode){case 80:case 33:H();N=true;break;case 78:case 32:case 34:t();N=true;break;case 72:case 37:w();N=true;break;case 76:case 39:h();
+N=true;break;case 75:case 38:q();N=true;break;case 74:case 40:z();N=true;break;}if(N){O.preventDefault();}else{if(O.keyCode===27&&G){if(I()){J();}else{A();
+}O.preventDefault();}}}function v(Q){if(Q.touches.length===1){if(Q.target.tagName.toLowerCase()==="a"||Q.target.tagName.toLowerCase()==="img"){return;}Q.preventDefault();
+var O={x:Q.touches[0].clientX,y:Q.touches[0].clientY};var N=window.innerWidth*0.3;var P=window.innerHeight*0.3;if(O.x<N){w();}else{if(O.x>window.innerWidth-N){h();
+}else{if(O.y<P){q();}else{if(O.y>window.innerHeight-P){z();}}}}b();}}function l(N){clearTimeout(u);u=setTimeout(function(){var O=N.detail||-N.wheelDelta;
+if(O>0){t();}else{H();}},100);}function s(N){B();}function C(){if(G){var O=document.querySelectorAll("#reveal .slides section a:not(.image)");for(var P=0,N=O.length;
+P<N;P++){var Q=O[P];if(Q.textContent&&!Q.querySelector("img")&&(!Q.className||!Q.classList.contains(Q,"roll"))){Q.classList.add("roll");Q.innerHTML='<span data-title="'+Q.text+'">'+Q.innerHTML+"</span>";
+}}}}function A(){d.wrapper.classList.add("overview");var N=Array.prototype.slice.call(document.querySelectorAll(i));for(var S=0,Q=N.length;S<Q;S++){var P=N[S],W="translateZ(-2500px) translate("+((S-j)*105)+"%, 0%)";
+P.setAttribute("data-index-h",S);P.style.display="block";P.style.WebkitTransform=W;P.style.MozTransform=W;P.style.msTransform=W;P.style.OTransform=W;P.style.transform=W;
+if(!P.classList.contains("stack")){P.addEventListener("click",y,true);}var V=Array.prototype.slice.call(P.querySelectorAll("section"));for(var R=0,O=V.length;
+R<O;R++){var U=V[R],T="translate(0%, "+((R-c)*105)+"%)";U.setAttribute("data-index-h",S);U.setAttribute("data-index-v",R);U.style.display="block";U.style.WebkitTransform=T;
+U.style.MozTransform=T;U.style.msTransform=T;U.style.OTransform=T;U.style.transform=T;U.addEventListener("click",y,true);}}}function J(){d.wrapper.classList.remove("overview");
+var Q=Array.prototype.slice.call(document.querySelectorAll("#reveal .slides section"));for(var P=0,N=Q.length;P<N;P++){var O=Q[P];O.style.WebkitTransform="";
+O.style.MozTransform="";O.style.msTransform="";O.style.OTransform="";O.style.transform="";O.removeEventListener("click",y);}b();}function I(){return d.wrapper.classList.contains("overview");
+}function y(N){if(I()){N.preventDefault();J();j=this.getAttribute("data-index-h");c=this.getAttribute("data-index-v");b();}}function M(O,Q){var S=Array.prototype.slice.call(document.querySelectorAll(O)),T=S.length;
+if(T){if(F.loop){Q%=T;if(Q<0){Q=T+Q;}}Q=Math.max(Math.min(Q,T-1),0);for(var R=0;R<T;R++){var N=S[R];if(I()===false){var U=Math.abs((Q-R)%(T-3))||0;N.style.display=U>3?"none":"block";
+}S[R].classList.remove("past");S[R].classList.remove("present");S[R].classList.remove("future");if(R<Q){S[R].classList.add("past");}else{if(R>Q){S[R].classList.add("future");
+}}if(N.querySelector("section")){S[R].classList.add("stack");}}S[Q].classList.add("present");var P=S[Q].getAttribute("data-state");if(P){L=L.concat(P.split(" "));
+}}else{Q=0;}return Q;}function b(){var Q=L.concat();L.length=0;j=M(i,j);c=M(a,c);stateLoop:for(var P=0,N=L.length;P<N;P++){for(var O=0;O<Q.length;O++){if(Q[O]===L[P]){Q.splice(O,1);
+continue stateLoop;}}document.documentElement.classList.add(L[P]);n(L[P]);}while(Q.length){document.documentElement.classList.remove(Q.pop());}if(F.progress){d.progressbar.style.width=(j/(document.querySelectorAll(i).length-1))*window.innerWidth+"px";
+}if(I()){A();}o();clearTimeout(x);x=setTimeout(f,1500);n("slidechanged",{indexh:j,indexv:c});}function o(){var N=e();[d.controlsLeft,d.controlsRight,d.controlsUp,d.controlsDown].forEach(function(O){O.classList.remove("enabled");
+});if(N.left){d.controlsLeft.classList.add("enabled");}if(N.right){d.controlsRight.classList.add("enabled");}if(N.up){d.controlsUp.classList.add("enabled");
+}if(N.down){d.controlsDown.classList.add("enabled");}}function e(){var N=document.querySelectorAll(i);var O=document.querySelectorAll(a);return{left:j>0,right:j<N.length-1,up:c>0,down:c<O.length-1};
+}function B(){var N=window.location.hash.slice(2).split("/");j=parseInt(N[0])||0;c=parseInt(N[1])||0;D(j,c);}function f(){if(F.history){var N="/";if(j>0||c>0){N+=j;
+}if(c>0){N+="/"+c;}window.location.hash=N;}}function n(O,N){var P=document.createEvent("HTMLEvents",1,2);P.initEvent(O,true,true);p(P,N);d.wrapper.dispatchEvent(P);
+}function r(){if(document.querySelector(a+".present")){var O=document.querySelectorAll(a+".present .fragment:not(.visible)");if(O.length){O[0].classList.add("visible");
+return true;}}else{var N=document.querySelectorAll(i+".present .fragment:not(.visible)");if(N.length){N[0].classList.add("visible");return true;}}return false;
+}function E(){if(document.querySelector(a+".present")){var O=document.querySelectorAll(a+".present .fragment.visible");if(O.length){O[O.length-1].classList.remove("visible");
+return true;}}else{var N=document.querySelectorAll(i+".present .fragment.visible");if(N.length){N[N.length-1].classList.remove("visible");return true;}}return false;
+}function D(O,N){j=O===undefined?j:O;c=N===undefined?c:N;b();}function w(){if(I()||E()===false){j--;c=0;b();}}function h(){if(I()||r()===false){j++;c=0;
+b();}}function q(){if(I()||E()===false){c--;b();}}function z(){if(I()||r()===false){c++;b();}}function H(){if(E()===false){if(e().up){q();}else{var N=document.querySelector("#reveal .slides>section.past:nth-child("+j+")");
+if(N){c=(N.querySelectorAll("section").length+1)||0;j--;b();}}}}function t(){if(r()===false){e().down?z():h();}}return{initialize:g,navigateTo:D,navigateLeft:w,navigateRight:h,navigateUp:q,navigateDown:z,addEventListener:function(O,P,N){(d.wrapper||document.querySelector("#reveal")).addEventListener(O,P,N);
+},removeEventListener:function(O,P,N){(d.wrapper||document.querySelector("#reveal")).removeEventListener(O,P,N);}};})();
\ No newline at end of file