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expose layout api method (closes #305), consistent spacing across all functions in core JS, remove unused each() method

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hakimel 2013-01-21 12:22:30 -05:00
parent 305e70d99b
commit 09bf962d32
2 changed files with 115 additions and 20 deletions
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133
js/reveal.js
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@ -88,6 +88,7 @@ var Reveal = (function(){
'OPerspective' in document.body.style ||
'perspective' in document.body.style,
// Detect support for CSS 2D transforms
supports2DTransforms = 'WebkitTransform' in document.body.style ||
'MozTransform' in document.body.style ||
'msTransform' in document.body.style ||
@ -123,6 +124,7 @@ var Reveal = (function(){
* Starts up the presentation if the client is capable.
*/
function initialize( options ) {
if( ( !supports2DTransforms && !supports3DTransforms ) ) {
document.body.setAttribute( 'class', 'no-transforms' );
@ -151,6 +153,7 @@ var Reveal = (function(){
* not found, it is created.
*/
function setupDOM() {
// Cache references to key DOM elements
dom.theme = document.querySelector( '#theme' );
dom.wrapper = document.querySelector( '.reveal' );
@ -204,12 +207,14 @@ var Reveal = (function(){
dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) );
dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) );
}
}
/**
* Hides the address bar if we're on a mobile device.
*/
function hideAddressBar() {
if( navigator.userAgent.match( /(iphone|ipod)/i ) ) {
// Give the page some scrollable overflow
document.documentElement.style.overflow = 'scroll';
@ -219,6 +224,7 @@ var Reveal = (function(){
window.addEventListener( 'load', removeAddressBar, false );
window.addEventListener( 'orientationchange', removeAddressBar, false );
}
}
/**
@ -229,6 +235,7 @@ var Reveal = (function(){
* will load after reveal.js has been started up.
*/
function load() {
var scripts = [],
scriptsAsync = [];
@ -270,6 +277,7 @@ var Reveal = (function(){
else {
proceed();
}
}
/**
@ -277,6 +285,7 @@ var Reveal = (function(){
* to the current URL deeplink if there is one.
*/
function start() {
// Make sure we've got all the DOM elements we need
setupDOM();
@ -305,12 +314,14 @@ var Reveal = (function(){
'currentSlide': currentSlide
} );
}, 1 );
}
/**
* Applies the configuration settings from the config object.
*/
function configure() {
if( supports3DTransforms === false ) {
config.transition = 'linear';
}
@ -356,12 +367,14 @@ var Reveal = (function(){
dom.theme.setAttribute( 'href', themeURL );
}
}
}
/**
* Binds all event listeners.
*/
function addEventListeners() {
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
document.addEventListener( 'touchend', onDocumentTouchEnd, false );
@ -385,12 +398,14 @@ var Reveal = (function(){
dom.controlsPrev.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigatePrev ), false ); } );
dom.controlsNext.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateNext ), false ); } );
}
}
/**
* Unbinds all event listeners.
*/
function removeEventListeners() {
document.removeEventListener( 'keydown', onDocumentKeyDown, false );
document.removeEventListener( 'touchstart', onDocumentTouchStart, false );
document.removeEventListener( 'touchmove', onDocumentTouchMove, false );
@ -411,6 +426,7 @@ var Reveal = (function(){
dom.controlsPrev.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigatePrev ), false ); } );
dom.controlsNext.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateNext ), false ); } );
}
}
/**
@ -418,22 +434,20 @@ var Reveal = (function(){
* If there's a conflict, object b takes precedence.
*/
function extend( a, b ) {
for( var i in b ) {
a[ i ] = b[ i ];
}
}
/**
* Converts the target object to an array.
*/
function toArray( o ) {
return Array.prototype.slice.call( o );
}
function each( targets, method, args ) {
targets.forEach( function( el ) {
el[method].apply( el, args );
} );
return Array.prototype.slice.call( o );
}
/**
@ -444,10 +458,12 @@ var Reveal = (function(){
* @param {Object} b point with x/y properties
*/
function distanceBetween( a, b ) {
var dx = a.x - b.x,
dy = a.y - b.y;
return Math.sqrt( dx*dx + dy*dy );
}
/**
@ -458,10 +474,12 @@ var Reveal = (function(){
* after the wrapper has been executed
*/
function preventAndForward( delegate ) {
return function( event ) {
event.preventDefault();
delegate.call( null, event );
};
}
/**
@ -469,9 +487,11 @@ var Reveal = (function(){
* more vertical space ftw.
*/
function removeAddressBar() {
setTimeout( function() {
window.scrollTo( 0, 1 );
}, 0 );
}
/**
@ -479,16 +499,19 @@ var Reveal = (function(){
* 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 );
}
/**
* Wrap all links in 3D goodness.
*/
function linkify() {
if( supports3DTransforms && !( 'msPerspective' in document.body.style ) ) {
var nodes = document.querySelectorAll( SLIDES_SELECTOR + ' a:not(.image)' );
@ -506,6 +529,7 @@ var Reveal = (function(){
}
}
}
}
/**
@ -525,7 +549,7 @@ var Reveal = (function(){
for( var i = 0, len = slides.length; i < len; i++ ) {
var slide = slides[ i ];
// Don't bother update invisible slides
// Don't bother updating invisible slides
if( slide.style.display === 'none' ) {
continue;
}
@ -545,17 +569,19 @@ var Reveal = (function(){
}
/**
* Stores the vertical index of a stack so that the same
* vertical slide can be selected when navigating to and
* Stores the vertical index of a stack so that the same
* vertical slide can be selected when navigating to and
* from the stack.
*
*
* @param {HTMLElement} stack The vertical stack element
* @param {int} v Index to memorize
*/
function setPreviousVerticalIndex( stack, v ) {
if( stack ) {
stack.setAttribute( 'data-previous-indexv', v || 0 );
}
}
/**
@ -566,11 +592,13 @@ var Reveal = (function(){
* @param {HTMLElement} stack The vertical stack element
*/
function getPreviousVerticalIndex( stack ) {
if( stack && stack.classList.contains( 'stack' ) ) {
return parseInt( stack.getAttribute( 'data-previous-indexv' ) || 0, 10 );
}
return 0;
}
/**
@ -593,7 +621,7 @@ var Reveal = (function(){
// Not the pretties solution, but need to let the overview
// class apply first so that slides are measured accurately
// before we can positon them
// before we can position them
activateOverviewTimeout = setTimeout( function(){
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
@ -704,12 +732,14 @@ var Reveal = (function(){
* overview is open, false means it's closed.
*/
function toggleOverview( override ) {
if( typeof override === 'boolean' ) {
override ? activateOverview() : deactivateOverview();
}
else {
isOverviewActive() ? deactivateOverview() : activateOverview();
}
}
/**
@ -719,7 +749,9 @@ var Reveal = (function(){
* false otherwise
*/
function isOverviewActive() {
return dom.wrapper.classList.contains( 'overview' );
}
/**
@ -729,6 +761,7 @@ var Reveal = (function(){
* @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
*/
function enterFullscreen() {
var element = document.body;
// Check which implementation is available
@ -740,6 +773,7 @@ var Reveal = (function(){
if( requestMethod ) {
requestMethod.apply( element );
}
}
/**
@ -747,33 +781,41 @@ var Reveal = (function(){
* black.
*/
function pause() {
dom.wrapper.classList.add( 'paused' );
}
/**
* Exits from the paused mode.
*/
function resume() {
dom.wrapper.classList.remove( 'paused' );
}
/**
* Toggles the paused mode on and off.
*/
function togglePause() {
if( isPaused() ) {
resume();
}
else {
pause();
}
}
/**
* Checks if we are currently in the paused mode.
*/
function isPaused() {
return dom.wrapper.classList.contains( 'paused' );
}
/**
@ -783,23 +825,24 @@ var Reveal = (function(){
*
* @param {int} h Horizontal index of the target slide
* @param {int} v Vertical index of the target slide
* @param {int} f Optional index of a fragment within the
* @param {int} f Optional index of a fragment within the
* target slide to activate
*/
function slide( h, v, f ) {
// Remember where we were at before
previousSlide = currentSlide;
// Query all horizontal slides in the deck
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
// If no vertical index is specified and the upcoming slide is a
// If no vertical index is specified and the upcoming slide is a
// stack, resume at its previous vertical index
if( v === undefined ) {
v = getPreviousVerticalIndex( horizontalSlides[ h ] );
}
// If we were on a vertical stack, remember what vertical index
// If we were on a vertical stack, remember what vertical index
// it was on so we can resume at the same position when returning
if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) {
setPreviousVerticalIndex( previousSlide.parentNode, indexv );
@ -837,7 +880,7 @@ var Reveal = (function(){
dispatchEvent( state[i] );
}
// Clean up the remaints of the previous state
// Clean up the remains of the previous state
while( stateBefore.length ) {
document.documentElement.classList.remove( stateBefore.pop() );
}
@ -912,6 +955,7 @@ var Reveal = (function(){
updateControls();
updateProgress();
}
/**
@ -928,6 +972,7 @@ var Reveal = (function(){
* bounds.
*/
function updateSlides( selector, index ) {
// Select all slides and convert the NodeList result to
// an array
var slides = toArray( document.querySelectorAll( selector ) ),
@ -1014,6 +1059,7 @@ var Reveal = (function(){
* Updates the progress bar to reflect the current slide.
*/
function updateProgress() {
// Update progress if enabled
if( config.progress && dom.progress ) {
@ -1055,12 +1101,14 @@ var Reveal = (function(){
dom.progressbar.style.width = ( pastCount / ( totalCount - 1 ) ) * window.innerWidth + 'px';
}
}
/**
* Updates the state of all control/navigation arrows.
*/
function updateControls() {
if ( config.controls && dom.controls ) {
var routes = availableRoutes();
@ -1085,6 +1133,7 @@ var Reveal = (function(){
if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); } );
}
}
/**
@ -1093,6 +1142,7 @@ var Reveal = (function(){
* @return {Object} containing four booleans: left/right/up/down
*/
function availableRoutes() {
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
@ -1102,12 +1152,14 @@ var Reveal = (function(){
up: indexv > 0,
down: indexv < verticalSlides.length - 1
};
}
/**
* Reads the current URL (hash) and navigates accordingly.
*/
function readURL() {
var hash = window.location.hash;
// Attempt to parse the hash as either an index or name
@ -1137,16 +1189,18 @@ var Reveal = (function(){
slide( h, v );
}
}
/**
* Updates the page URL (hash) to reflect the current
* state.
*
* @param {Number} delay The time in ms to wait before
* @param {Number} delay The time in ms to wait before
* writing the hash
*/
function writeURL( delay ) {
if( config.history ) {
// Make sure there's never more than one timeout running
@ -1172,6 +1226,7 @@ var Reveal = (function(){
window.location.hash = url;
}
}
}
/**
@ -1185,6 +1240,7 @@ var Reveal = (function(){
* @return {Object} { h: <int>, v: <int> }
*/
function getIndices( slide ) {
// By default, return the current indices
var h = indexh,
v = indexv;
@ -1207,6 +1263,7 @@ var Reveal = (function(){
}
return { h: h, v: v };
}
/**
@ -1216,6 +1273,7 @@ var Reveal = (function(){
* false otherwise
*/
function nextFragment() {
// Vertical slides:
if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
@ -1240,6 +1298,7 @@ var Reveal = (function(){
}
return false;
}
/**
@ -1249,6 +1308,7 @@ var Reveal = (function(){
* false otherwise
*/
function previousFragment() {
// Vertical slides:
if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
@ -1273,46 +1333,57 @@ var Reveal = (function(){
}
return false;
}
/**
* Cues a new automated slide if enabled in the config.
*/
function cueAutoSlide() {
clearTimeout( autoSlideTimeout );
// Cue the next auto-slide if enabled
if( autoSlide ) {
autoSlideTimeout = setTimeout( navigateNext, autoSlide );
}
}
function navigateLeft() {
// Prioritize hiding fragments
if( availableRoutes().left && isOverviewActive() || previousFragment() === false ) {
slide( indexh - 1 );
}
}
function navigateRight() {
// Prioritize revealing fragments
if( availableRoutes().right && isOverviewActive() || nextFragment() === false ) {
slide( indexh + 1 );
}
}
function navigateUp() {
// Prioritize hiding fragments
if( availableRoutes().up && isOverviewActive() || previousFragment() === false ) {
slide( indexh, indexv - 1 );
}
}
function navigateDown() {
// Prioritize revealing fragments
if( availableRoutes().down && isOverviewActive() || nextFragment() === false ) {
slide( indexh, indexv + 1 );
}
}
/**
@ -1322,6 +1393,7 @@ var Reveal = (function(){
* 3) Previous horizontal slide
*/
function navigatePrev() {
// Prioritize revealing fragments
if( previousFragment() === false ) {
if( availableRoutes().up ) {
@ -1338,12 +1410,14 @@ var Reveal = (function(){
}
}
}
}
/**
* Same as #navigatePrev() but navigates forwards.
*/
function navigateNext() {
// Prioritize revealing fragments
if( nextFragment() === false ) {
availableRoutes().down ? navigateDown() : navigateRight();
@ -1352,6 +1426,7 @@ var Reveal = (function(){
// If auto-sliding is enabled we need to cue up
// another timeout
cueAutoSlide();
}
@ -1366,12 +1441,13 @@ var Reveal = (function(){
* @param {Object} event
*/
function onDocumentKeyDown( event ) {
// Check if there's a focused element that could be using
// Check if there's a focused element that could be using
// the keyboard
var activeElement = document.activeElement;
var hasFocus = !!( document.activeElement && ( document.activeElement.type || document.activeElement.href || document.activeElement.contentEditable !== 'inherit' ) );
// Disregard the event if there's a focused element or a
// Disregard the event if there's a focused element or a
// keyboard modifier key is present
if ( hasFocus || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
@ -1428,6 +1504,7 @@ var Reveal = (function(){
* enables support for swipe and pinch gestures.
*/
function onDocumentTouchStart( event ) {
touch.startX = event.touches[0].clientX;
touch.startY = event.touches[0].clientY;
touch.startCount = event.touches.length;
@ -1443,12 +1520,14 @@ var Reveal = (function(){
y: touch.startY
} );
}
}
/**
* Handler for the document level 'touchmove' event.
*/
function onDocumentTouchMove( event ) {
// Each touch should only trigger one action
if( !touch.handled ) {
var currentX = event.touches[0].clientX;
@ -1515,20 +1594,24 @@ var Reveal = (function(){
else if( navigator.userAgent.match( /android/gi ) ) {
event.preventDefault();
}
}
/**
* Handler for the document level 'touchend' event.
*/
function onDocumentTouchEnd( event ) {
touch.handled = false;
}
/**
* Handles mouse wheel scrolling, throttled to avoid skipping
* multiple slides.
*/
function onDocumentMouseScroll( event ){
function onDocumentMouseScroll( event ) {
clearTimeout( mouseWheelTimeout );
mouseWheelTimeout = setTimeout( function() {
@ -1540,6 +1623,7 @@ var Reveal = (function(){
navigatePrev();
}
}, 100 );
}
/**
@ -1549,30 +1633,37 @@ var Reveal = (function(){
* ( clickX / presentationWidth ) * numberOfSlides
*/
function onProgressClick( event ) {
var slidesTotal = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).length;
var slideIndex = Math.floor( ( event.clientX / dom.wrapper.offsetWidth ) * slidesTotal );
slide( slideIndex );
}
/**
* Handler for the window level 'hashchange' event.
*/
function onWindowHashChange( event ) {
readURL();
}
/**
* Handler for the window level 'resize' event.
*/
function onWindowResize( event ) {
layout();
}
/**
* Invoked when a slide is and we're in the overview.
*/
function onOverviewSlideClicked( event ) {
// TODO There's a bug here where the event listeners are not
// removed after deactivating the overview.
if( isOverviewActive() ) {
@ -1593,6 +1684,7 @@ var Reveal = (function(){
slide( h, v );
}
}
}
@ -1624,6 +1716,9 @@ var Reveal = (function(){
navigatePrev: navigatePrev,
navigateNext: navigateNext,
// Forces an update in slide layout
layout: layout,
// Toggles the overview mode on/off
toggleOverview: toggleOverview,

2
js/reveal.min.js vendored
View file

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