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Add auto-slide API and data-autoslide for fragments

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This commit is contained in:
rajgoel 2013-12-20 16:22:32 +01:00
parent b7fcd71c9f
commit 5a8da0555c
1 changed files with 53 additions and 4 deletions
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57
js/reveal.js
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@ -1448,6 +1448,33 @@ var Reveal = (function(){
}
/**
* Toggles the auto slide mode on and off.
*
* @param {Boolean} override Optional flag which sets the desired state.
* True means autoplay starts, false means it stops.
*/
function toggleAutoSlide( override ) {
if( typeof override === 'boolean' ) {
override ? resumeAutoSlide() : pauseAutoSlide();
}
else {
autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide();
}
}
/**
* Checks if the auto slide mode is currently on.
*/
function isSliding() {
return !autoSlidePaused;
}
/**
* Steps from the current point in the presentation to the
* slide which matches the specified horizontal and vertical
@ -2473,14 +2500,26 @@ var Reveal = (function(){
if( currentSlide ) {
var fragmentAutoSlide = null;
// it is assumed that any given data-autoslide value (for each of the current fragments) can be chosen
toArray( Reveal.getCurrentSlide().querySelectorAll( '.current-fragment' ) ).forEach( function( el ) {
if( el.hasAttribute( 'data-autoslide' ) ) {
fragmentAutoSlide = el.getAttribute( 'data-autoslide' );
}
} );
var parentAutoSlide = currentSlide.parentNode ? currentSlide.parentNode.getAttribute( 'data-autoslide' ) : null;
var slideAutoSlide = currentSlide.getAttribute( 'data-autoslide' );
// Pick value in the following priority order:
// 1. Current slide's data-autoslide
// 2. Parent slide's data-autoslide
// 3. Global autoSlide setting
if( slideAutoSlide ) {
// 1. Current fragment's data-autoslide
// 2. Current slide's data-autoslide
// 3. Parent slide's data-autoslide
// 4. Global autoSlide setting
if( fragmentAutoSlide ) {
autoSlide = parseInt( fragmentAutoSlide, 10 );
}
else if( slideAutoSlide ) {
autoSlide = parseInt( slideAutoSlide, 10 );
}
else if( parentAutoSlide ) {
@ -2533,6 +2572,7 @@ var Reveal = (function(){
function pauseAutoSlide() {
autoSlidePaused = true;
dispatchEvent( 'autoslidepaused' );
clearTimeout( autoSlideTimeout );
if( autoSlidePlayer ) {
@ -2544,6 +2584,7 @@ var Reveal = (function(){
function resumeAutoSlide() {
autoSlidePaused = false;
dispatchEvent( 'autoslideresumed' );
cueAutoSlide();
}
@ -2661,6 +2702,8 @@ var Reveal = (function(){
*/
function onDocumentKeyDown( event ) {
// store auto slide value to be able to toggle auto sliding
var currentAutoSlideValue = autoSlidePaused;
onUserInput( event );
// Check if there's a focused element that could be using
@ -2737,6 +2780,8 @@ var Reveal = (function(){
case 66: case 190: case 191: togglePause(); break;
// f
case 70: enterFullscreen(); break;
// a
case 65: if ( config.autoSlideStoppable ) toggleAutoSlide( currentAutoSlideValue ); break;
default:
triggered = false;
}
@ -3289,9 +3334,13 @@ var Reveal = (function(){
// Toggles the "black screen" mode on/off
togglePause: togglePause,
// Toggles the auto slide mode on/off
toggleAutoSlide: toggleAutoSlide,
// State checks
isOverview: isOverview,
isPaused: isPaused,
isSliding: isSliding,
// Adds or removes all internal event listeners (such as keyboard)
addEventListeners: addEventListeners,