From b4e2c97d0c05395fa7ce46ca57dad029f878d088 Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Mon, 18 Nov 2013 09:01:33 -0500 Subject: [PATCH] initial fragment rewrite --- js/reveal.js | 124 +++++++++++++++++++++++++++++------------------ js/reveal.min.js | 6 +-- 2 files changed, 80 insertions(+), 50 deletions(-) diff --git a/js/reveal.js b/js/reveal.js index 7b81e5c8..ed41ce56 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -1047,7 +1047,7 @@ var Reveal = (function(){ a.forEach( function( el, idx ) { if( !el.hasAttribute( 'data-fragment-index' ) ) { - el.setAttribute( 'data-fragment-index', idx ); + el.setAttribute( 'data-fragment-index', idx + 1 ); } } ); @@ -2278,6 +2278,79 @@ var Reveal = (function(){ } + /** + * Navigate to the specified slide fragment. + * + * @return {Boolean} true if there was a next fragment, + * false otherwise + */ + function navigateFragment( index, offset ) { + + if( currentSlide && config.fragments ) { + + var fragments = sortFragments( currentSlide.querySelectorAll( '.fragment' ) ); + if( fragments.length ) { + + if( typeof index !== 'number' ) { + var lastVisibleFragment = sortFragments( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop(); + + if( lastVisibleFragment ) { + index = parseInt( lastVisibleFragment.getAttribute( 'data-fragment-index' ) || 1, 10 ); + } + else { + index = 0; + } + } + + if( typeof offset === 'number' ) { + index += offset; + } + + var fragmentsShown = [], + fragmentsHidden = []; + + toArray( fragments ).forEach( function( element, i ) { + + if( i < index ) { + if( !element.classList.contains( 'visible' ) ) fragmentsShown.push( element ); + element.classList.add( 'visible' ); + element.classList.remove( 'current-fragment' ); + + if( i === index ) { + element.classList.add( 'current-fragment' ); + } + } + else { + if( element.classList.contains( 'visible' ) ) fragmentsHidden.push( element ); + element.classList.remove( 'visible' ); + element.classList.remove( 'current-fragment' ); + } + + + } ); + + if( offset < 0 && fragmentsHidden.length ) { + console.log('hidden'); + dispatchEvent( 'fragmenthidden', { fragment: fragmentsHidden[0], fragments: fragmentsHidden } ); + } + + if( offset > 0 && fragmentsShown.length ) { + console.log('hidden'); + dispatchEvent( 'fragmentshown', { fragment: fragmentsShown[0], fragments: fragmentsShown } ); + } + + updateControls(); + + return !!( fragmentsShown.length || fragmentsHidden.length ); + + } + + } + + return false; + + } + /** * Navigate to the next slide fragment. * @@ -2286,29 +2359,7 @@ var Reveal = (function(){ */ function nextFragment() { - if( currentSlide && config.fragments ) { - var fragments = sortFragments( currentSlide.querySelectorAll( '.fragment:not(.visible)' ) ); - - if( fragments.length ) { - // Find the index of the next fragment - var index = fragments[0].getAttribute( 'data-fragment-index' ); - - // Find all fragments with the same index - fragments = currentSlide.querySelectorAll( '.fragment[data-fragment-index="'+ index +'"]' ); - - toArray( fragments ).forEach( function( element ) { - element.classList.add( 'visible' ); - } ); - - // Notify subscribers of the change - dispatchEvent( 'fragmentshown', { fragment: fragments[0], fragments: fragments } ); - - updateControls(); - return true; - } - } - - return false; + return navigateFragment( null, 1 ); } @@ -2320,29 +2371,7 @@ var Reveal = (function(){ */ function previousFragment() { - if( currentSlide && config.fragments ) { - var fragments = sortFragments( currentSlide.querySelectorAll( '.fragment.visible' ) ); - - if( fragments.length ) { - // Find the index of the previous fragment - var index = fragments[ fragments.length - 1 ].getAttribute( 'data-fragment-index' ); - - // Find all fragments with the same index - fragments = currentSlide.querySelectorAll( '.fragment[data-fragment-index="'+ index +'"]' ); - - toArray( fragments ).forEach( function( f ) { - f.classList.remove( 'visible' ); - } ); - - // Notify subscribers of the change - dispatchEvent( 'fragmenthidden', { fragment: fragments[0], fragments: fragments } ); - - updateControls(); - return true; - } - } - - return false; + return navigateFragment( null, -1 ); } @@ -3132,6 +3161,7 @@ var Reveal = (function(){ next: navigateNext, prevFragment: previousFragment, nextFragment: nextFragment, + navigateFragment: navigateFragment, // Deprecated aliases navigateTo: slide, diff --git a/js/reveal.min.js b/js/reveal.min.js index 3f6cb3ee..ed6f7650 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,9 +1,9 @@ /*! 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