working on #227
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@ -125,7 +125,7 @@ The Reveal class provides a minimal JavaScript API for controlling navigation an
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```javascript
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// Navigation
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Reveal.slide( indexh, indexv );
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Reveal.slide( indexh, indexv, indexf );
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Reveal.left();
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Reveal.right();
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Reveal.up();
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107
js/reveal.js
107
js/reveal.js
@ -60,6 +60,9 @@ var Reveal = (function(){
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// The horizontal and verical index of the currently active slide
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indexh = 0,
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indexv = 0,
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// the fragment index
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indexf = 0,
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// The previous and current slide HTML elements
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previousSlide,
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@ -626,7 +629,7 @@ var Reveal = (function(){
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* @param {int} h Horizontal index of the target slide
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* @param {int} v Vertical index of the target slide
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*/
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function slide( h, v ) {
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function slide( h, v, f) {
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// Remember where we were at before
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previousSlide = currentSlide;
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@ -642,6 +645,24 @@ var Reveal = (function(){
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// Activate and transition to the new slide
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indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h );
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indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v );
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// Show fragment, if specified
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if ( typeof f !== undefined ) {
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// Hide all fragments in current slide
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while ( previousFragment() ) {
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// loop
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}
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if ( f !== 0 ) {
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var fragmentIndex = 0;
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while ( indexf < f && nextFragment() ) {
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fragmentIndex++;
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}
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// We cannot trust nextFragment for setting indexf: it can go beyond the max number of fragments available
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indexf = fragmentIndex;
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}
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} else {
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indexf = 0;
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}
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// Apply the new state
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stateLoop: for( var i = 0, len = state.length; i < len; i++ ) {
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@ -677,10 +698,7 @@ var Reveal = (function(){
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updateControls();
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// Update the URL hash after a delay since updating it mid-transition
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// is likely to cause visual lag
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clearTimeout( writeURLTimeout );
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writeURLTimeout = setTimeout( writeURL, 1500 );
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updateURL();
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// Query all horizontal slides in the deck
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var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
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@ -855,9 +873,11 @@ var Reveal = (function(){
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function readURL() {
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var hash = window.location.hash;
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var hashParts = hash.split( '?' );
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// Attempt to parse the hash as either an index or name
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var bits = hash.slice( 2 ).split( '/' ),
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name = hash.replace( /#|\//gi, '' );
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var bits = hashParts[0].slice( 2 ).split( '/' ),
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name = hashParts[0].replace( /#|\//gi, '' );
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// If the first bit is invalid and there is a name we can
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// assume that this is a named link
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@ -879,10 +899,22 @@ var Reveal = (function(){
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// Read the index components of the hash
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var h = parseInt( bits[0], 10 ) || 0,
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v = parseInt( bits[1], 10 ) || 0;
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var f = 0;
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if ( hashParts.length > 1 ) {
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f = parseInt( hashParts[1] );
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}
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slide( h, v );
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slide( h, v, f );
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}
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}
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function updateURL () {
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// Update the URL hash after a delay since updating it mid-transition
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// is likely to cause visual lag
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clearTimeout( writeURLTimeout );
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writeURLTimeout = setTimeout( writeURL, 1500 );
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}
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/**
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* Updates the page URL (hash) to reflect the current
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@ -896,6 +928,7 @@ var Reveal = (function(){
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// the URL
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if( indexh > 0 || indexv > 0 ) url += indexh;
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if( indexv > 0 ) url += '/' + indexv;
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if( indexf > 0 ) url += '?' + indexf;
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window.location.hash = url;
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}
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@ -944,14 +977,15 @@ var Reveal = (function(){
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*/
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function nextFragment() {
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// Vertical slides:
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var fragment,
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fragmentFound = false;
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if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
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var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
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if( verticalFragments.length ) {
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verticalFragments[0].classList.add( 'visible' );
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// Notify subscribers of the change
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dispatchEvent( 'fragmentshown', { fragment: verticalFragments[0] } );
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return true;
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fragment = verticalFragments[0];
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fragmentFound = true;
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}
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}
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// Horizontal slides:
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@ -959,14 +993,23 @@ var Reveal = (function(){
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var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
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if( horizontalFragments.length ) {
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horizontalFragments[0].classList.add( 'visible' );
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// Notify subscribers of the change
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dispatchEvent( 'fragmentshown', { fragment: horizontalFragments[0] } );
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return true;
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fragment = horizontalFragments[0];
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fragmentFound = true;
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}
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}
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if ( fragmentFound ) {
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indexf++;
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return false;
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// Notify subscribers of the change
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dispatchEvent( 'fragmentshown', { fragment: fragment, index: indexf } );
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updateURL();
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} else {
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indexf = 0;
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}
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return fragmentFound;
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}
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/**
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@ -976,15 +1019,16 @@ var Reveal = (function(){
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* false otherwise
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*/
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function previousFragment() {
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var fragment,
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fragmentFound = false;
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// Vertical slides:
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if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
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var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
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if( verticalFragments.length ) {
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verticalFragments[ verticalFragments.length - 1 ].classList.remove( 'visible' );
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// Notify subscribers of the change
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dispatchEvent( 'fragmenthidden', { fragment: verticalFragments[ verticalFragments.length - 1 ] } );
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return true;
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fragment = verticalFragments[ verticalFragments.length - 1 ];
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fragmentFound = true;
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}
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}
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// Horizontal slides:
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@ -992,14 +1036,23 @@ var Reveal = (function(){
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var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' );
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if( horizontalFragments.length ) {
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horizontalFragments[ horizontalFragments.length - 1 ].classList.remove( 'visible' );
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// Notify subscribers of the change
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dispatchEvent( 'fragmenthidden', { fragment: horizontalFragments[ horizontalFragments.length - 1 ] } );
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return true;
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fragment = horizontalFragments[ horizontalFragments.length - 1 ];
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fragmentFound = true;
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}
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}
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return false;
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if ( fragmentFound ) {
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indexf--;
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// Notify subscribers of the change
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dispatchEvent( 'fragmenthidden', { fragment: fragment, index: indexf } );
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updateURL();
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} else {
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indexf = 0;
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}
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return fragmentFound;
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}
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/**
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@ -1017,7 +1070,7 @@ var Reveal = (function(){
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function navigateLeft() {
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// Prioritize hiding fragments
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if( availableRoutes().left && ( isOverviewActive() || previousFragment() === false ) ) {
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slide( indexh - 1, 0 );
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slide( indexh - 1, 0, Number.MAX_VALUE );
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}
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}
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