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include references to previous/current sldie DOM elements in slidechange event

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Hakim El Hattab 2012-06-06 22:46:21 -04:00
parent 2b6c61060b
commit 6a03f65e97
4 changed files with 32 additions and 14 deletions
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20
js/reveal.js
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@ -661,11 +661,29 @@ var Reveal = (function(){
clearTimeout( writeURLTimeout );
writeURLTimeout = setTimeout( writeURL, 1500 );
// Only fire if the slide index is different from before
if( indexh !== indexhBefore || indexv !== indexvBefore ) {
// Query all horizontal slides in the deck
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
// Find the previous and current horizontal slides
var previousHorizontalSlide = horizontalSlides[ indexhBefore ],
currentHorizontalSlide = horizontalSlides[ indexh ];
// Query all vertical slides inside of the previous and current horizontal slides
var previousVerticalSlides = previousHorizontalSlide.querySelectorAll( 'section' );
currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' );
// Dispatch an event notifying observers of the change in slide
dispatchEvent( 'slidechanged', {
// Include the current indices in the event
'indexh': indexh,
'indexv': indexv
'indexv': indexv,
// Passes direct references to the slide HTML elements, attempts to find
// a vertical slide and falls back on the horizontal parent
'previousSlide': previousVerticalSlides[ indexvBefore ] || previousHorizontalSlide,
'currentSlide': currentVerticalSlides[ indexv ] || currentHorizontalSlide
} );
}
}