692 lines
20 KiB
JavaScript
692 lines
20 KiB
JavaScript
/**
|
|
* Copyright (C) 2011 Hakim El Hattab, http://hakim.se
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*
|
|
*
|
|
* #############################################################################
|
|
*
|
|
*
|
|
* Reveal.js is an easy to use HTML based slideshow enhanced by
|
|
* sexy CSS 3D transforms.
|
|
*
|
|
* Slides are given unique hash based URL's so that they can be
|
|
* opened directly.
|
|
*
|
|
* Public facing methods:
|
|
* - Reveal.initialize( { ... options ... } );
|
|
* - Reveal.navigateTo( indexh, indexv );
|
|
* - Reveal.navigateLeft();
|
|
* - Reveal.navigateRight();
|
|
* - Reveal.navigateUp();
|
|
* - Reveal.navigateDown();
|
|
*
|
|
*
|
|
* version 0.1:
|
|
* - First release
|
|
*
|
|
* version 0.2:
|
|
* - Refactored code and added inline documentation
|
|
* - Slides now have unique URL's
|
|
* - A basic API to invoke navigation was added
|
|
*
|
|
* version 0.3:
|
|
* - Added licensing terms
|
|
* - Fixed broken links on touch devices
|
|
*
|
|
* version 1.0:
|
|
* - Added controls
|
|
* - Added initialization options
|
|
* - Reveal views in fragments
|
|
* - Revamped, darker, theme
|
|
* - Tweaked markup styles (a, em, strong, b, i, blockquote, q, pre, ul, ol)
|
|
* - Support for themes at initialization (default/linear/concave)
|
|
* - Code highlighting via highlight.js
|
|
*
|
|
* version 1.1:
|
|
* - Optional progress bar UI element
|
|
* - Slide overview available via SPACE
|
|
* - Added 'transition' option for specifying transition styles
|
|
* - Added 'theme' option for specifying UI styles
|
|
* - Slides that contain nested-slides are given the 'stack' class
|
|
*
|
|
* version 1.2:
|
|
* - Big changes to DOM structure:
|
|
* - Previous #main wrapper is now called #reveal
|
|
* - Slides were moved one level deeper, into #reveal .slides
|
|
* - Controls and progress bar were moved into #reveal
|
|
* - All CSS is now much more explicit, rooted at #reveal, to prevent conflicts
|
|
* - Config option for disabling updates to URL, defaults to true
|
|
* - Removed dependency on classList
|
|
*
|
|
*
|
|
* @author Hakim El Hattab | http://hakim.se
|
|
* @version 1.2
|
|
*/
|
|
var Reveal = (function(){
|
|
|
|
var HORIZONTAL_SLIDES_SELECTOR = '#reveal .slides>section',
|
|
VERTICAL_SLIDES_SELECTOR = '#reveal .slides>section.present>section',
|
|
|
|
// The horizontal and verical index of the currently active slide
|
|
indexh = 0,
|
|
indexv = 0,
|
|
|
|
// Configurations options, can be overridden at initialization time
|
|
config = {
|
|
controls: false,
|
|
progress: false,
|
|
history: false,
|
|
transition: 'default',
|
|
theme: 'default',
|
|
rollingLinks: true
|
|
},
|
|
|
|
// Cached references to DOM elements
|
|
dom = {},
|
|
|
|
// Detect support for CSS 3D transforms
|
|
supports3DTransforms = document.body.style['perspectiveProperty'] !== undefined ||
|
|
document.body.style['WebkitPerspective'] !== undefined ||
|
|
document.body.style['MozPerspective'] !== undefined ||
|
|
document.body.style['msPerspective'] !== undefined,
|
|
|
|
supports2DTransforms = document.body.style['transformProperty'] !== undefined ||
|
|
document.body.style['WebkitTransform'] !== undefined ||
|
|
document.body.style['MozTransform'] !== undefined ||
|
|
document.body.style['msTransform'] !== undefined ||
|
|
document.body.style['OTransform'] !== undefined;
|
|
|
|
/**
|
|
* Starts up the slideshow by applying configuration
|
|
* options and binding various events.
|
|
*/
|
|
function initialize( options ) {
|
|
|
|
if( !supports2DTransforms && !supports3DTransforms ) {
|
|
document.body.setAttribute( 'class', 'no-transforms' );
|
|
|
|
// If the browser doesn't support transforms we won't be
|
|
// using JavaScript to control the presentation
|
|
return;
|
|
}
|
|
|
|
// Cache references to DOM elements
|
|
dom.wrapper = document.querySelector( '#reveal' );
|
|
dom.progress = document.querySelector( '#reveal .progress' );
|
|
dom.progressbar = document.querySelector( '#reveal .progress span' );
|
|
dom.controls = document.querySelector( '#reveal .controls' );
|
|
dom.controlsLeft = document.querySelector( '#reveal .controls .left' );
|
|
dom.controlsRight = document.querySelector( '#reveal .controls .right' );
|
|
dom.controlsUp = document.querySelector( '#reveal .controls .up' );
|
|
dom.controlsDown = document.querySelector( '#reveal .controls .down' );
|
|
|
|
// Bind all view events
|
|
document.addEventListener('keydown', onDocumentKeyDown, false);
|
|
document.addEventListener('touchstart', onDocumentTouchStart, false);
|
|
window.addEventListener('hashchange', onWindowHashChange, false);
|
|
dom.controlsLeft.addEventListener('click', preventAndForward( navigateLeft ), false);
|
|
dom.controlsRight.addEventListener('click', preventAndForward( navigateRight ), false);
|
|
dom.controlsUp.addEventListener('click', preventAndForward( navigateUp ), false);
|
|
dom.controlsDown.addEventListener('click', preventAndForward( navigateDown ), false);
|
|
|
|
// Copy options over to our config object
|
|
extend( config, options );
|
|
|
|
// Fall back on the 2D transform theme 'linear'
|
|
if( supports3DTransforms === false ) {
|
|
config.transition = 'linear';
|
|
}
|
|
|
|
if( config.controls ) {
|
|
dom.controls.style.display = 'block';
|
|
}
|
|
|
|
if( config.progress ) {
|
|
dom.progress.style.display = 'block';
|
|
}
|
|
|
|
if( config.transition !== 'default' ) {
|
|
addClass( dom.wrapper, config.transition );
|
|
}
|
|
|
|
if( config.theme !== 'default' ) {
|
|
addClass( dom.wrapper, config.theme );
|
|
}
|
|
|
|
if( config.rollingLinks ) {
|
|
// Add some 3D magic to our anchors
|
|
linkify();
|
|
}
|
|
|
|
// Read the initial hash
|
|
readURL();
|
|
}
|
|
|
|
/**
|
|
* Extend object a with the properties of object b.
|
|
* If there's a conflict, object b takes precedence.
|
|
*/
|
|
function extend( a, b ) {
|
|
for( var i in b ) {
|
|
a[ i ] = b[ i ];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Prevents an events defaults behavior calls the
|
|
* specified delegate.
|
|
*
|
|
* @param {Function} delegate The method to call
|
|
* after the wrapper has been executed
|
|
*/
|
|
function preventAndForward( delegate ) {
|
|
return function( event ) {
|
|
event.preventDefault();
|
|
delegate.call();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handler for the document level 'keydown' event.
|
|
*
|
|
* @param {Object} event
|
|
*/
|
|
function onDocumentKeyDown( event ) {
|
|
// FFT: Use document.querySelector( ':focus' ) === null
|
|
// instead of checking contentEditable?
|
|
|
|
if( event.target.contentEditable === 'inherit' ) {
|
|
if( event.keyCode >= 37 && event.keyCode <= 40 ) {
|
|
|
|
switch( event.keyCode ) {
|
|
case 37: navigateLeft(); break; // left
|
|
case 39: navigateRight(); break; // right
|
|
case 38: navigateUp(); break; // up
|
|
case 40: navigateDown(); break; // down
|
|
}
|
|
|
|
slide();
|
|
|
|
event.preventDefault();
|
|
|
|
}
|
|
// Space bar
|
|
else if ( event.keyCode === 32 && supports3DTransforms ) {
|
|
if( overviewIsActive() ) {
|
|
deactivateOverview();
|
|
}
|
|
else {
|
|
activateOverview();
|
|
}
|
|
|
|
event.preventDefault();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handler for the document level 'touchstart' event.
|
|
*
|
|
* This enables very basic tap interaction for touch
|
|
* devices. Added mainly for performance testing of 3D
|
|
* transforms on iOS but was so happily surprised with
|
|
* how smoothly it runs so I left it in here. Apple +1
|
|
*
|
|
* @param {Object} event
|
|
*/
|
|
function onDocumentTouchStart( event ) {
|
|
// We're only interested in one point taps
|
|
if (event.touches.length === 1) {
|
|
// Never prevent taps on anchors and images
|
|
if( event.target.tagName.toLowerCase() === 'a' || event.target.tagName.toLowerCase() === 'img' ) {
|
|
return;
|
|
}
|
|
|
|
event.preventDefault();
|
|
|
|
var point = {
|
|
x: event.touches[0].clientX,
|
|
y: event.touches[0].clientY
|
|
};
|
|
|
|
// Define the extent of the areas that may be tapped
|
|
// to navigate
|
|
var wt = window.innerWidth * 0.3;
|
|
var ht = window.innerHeight * 0.3;
|
|
|
|
if( point.x < wt ) {
|
|
navigateLeft();
|
|
}
|
|
else if( point.x > window.innerWidth - wt ) {
|
|
navigateRight();
|
|
}
|
|
else if( point.y < ht ) {
|
|
navigateUp();
|
|
}
|
|
else if( point.y > window.innerHeight - ht ) {
|
|
navigateDown();
|
|
}
|
|
|
|
slide();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handler for the window level 'hashchange' event.
|
|
*
|
|
* @param {Object} event
|
|
*/
|
|
function onWindowHashChange( event ) {
|
|
readURL();
|
|
}
|
|
|
|
/**
|
|
* Wrap all links in 3D goodness.
|
|
*/
|
|
function linkify() {
|
|
if( supports3DTransforms ) {
|
|
var nodes = document.querySelectorAll( '#reveal .slides section a:not(.image)' );
|
|
|
|
for( var i = 0, len = nodes.length; i < len; i++ ) {
|
|
var node = nodes[i];
|
|
|
|
if( node.textContent && !node.querySelector( 'img' ) && ( !node.className || !hasClass( node, 'roll' ) ) ) {
|
|
addClass( node, 'roll' );
|
|
node.innerHTML = '<span data-title="'+ node.text +'">' + node.innerHTML + '</span>';
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Displays the overview of slides (quick nav) by
|
|
* scaling down and arranging all slide elements.
|
|
*
|
|
* Experimental feature, might be dropped if perf
|
|
* can't be improved.
|
|
*/
|
|
function activateOverview() {
|
|
addClass( dom.wrapper, 'overview' );
|
|
|
|
var horizontalSlides = Array.prototype.slice.call( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
|
|
|
|
for( var i = 0, len1 = horizontalSlides.length; i < len1; i++ ) {
|
|
var hslide = horizontalSlides[i],
|
|
htransform = 'translateZ(-2500px) translate(' + ( ( i - indexh ) * 105 ) + '%, 0%)';
|
|
|
|
hslide.setAttribute( 'data-index-h', i );
|
|
hslide.style.display = 'block';
|
|
hslide.style.WebkitTransform = htransform;
|
|
hslide.style.MozTransform = htransform;
|
|
hslide.style.msTransform = htransform;
|
|
hslide.style.OTransform = htransform;
|
|
hslide.style.transform = htransform;
|
|
|
|
if( !hasClass( hslide, 'stack' ) ) {
|
|
// Navigate to this slide on click
|
|
hslide.addEventListener( 'click', onOverviewSlideClicked, true );
|
|
}
|
|
|
|
var verticalSlides = Array.prototype.slice.call( hslide.querySelectorAll( 'section' ) );
|
|
|
|
for( var j = 0, len2 = verticalSlides.length; j < len2; j++ ) {
|
|
var vslide = verticalSlides[j],
|
|
vtransform = 'translate(0%, ' + ( ( j - indexv ) * 105 ) + '%)';
|
|
|
|
vslide.setAttribute( 'data-index-h', i );
|
|
vslide.setAttribute( 'data-index-v', j );
|
|
vslide.style.display = 'block';
|
|
vslide.style.WebkitTransform = vtransform;
|
|
vslide.style.MozTransform = vtransform;
|
|
vslide.style.msTransform = vtransform;
|
|
vslide.style.OTransform = vtransform;
|
|
vslide.style.transform = vtransform;
|
|
|
|
// Navigate to this slide on click
|
|
vslide.addEventListener( 'click', onOverviewSlideClicked, true );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Exits the slide overview and enters the currently
|
|
* active slide.
|
|
*/
|
|
function deactivateOverview() {
|
|
removeClass( dom.wrapper, 'overview' );
|
|
|
|
var slides = Array.prototype.slice.call( document.querySelectorAll( '#reveal .slides section' ) );
|
|
|
|
for( var i = 0, len = slides.length; i < len; i++ ) {
|
|
var element = slides[i];
|
|
|
|
// Resets all transforms to use the external styles
|
|
element.style.WebkitTransform = '';
|
|
element.style.MozTransform = '';
|
|
element.style.msTransform = '';
|
|
element.style.OTransform = '';
|
|
element.style.transform = '';
|
|
|
|
element.removeEventListener( 'click', onOverviewSlideClicked );
|
|
}
|
|
|
|
slide();
|
|
}
|
|
|
|
/**
|
|
* Checks if the overview is currently active.
|
|
*
|
|
* @return {Boolean} true if the overview is active,
|
|
* false otherwise
|
|
*/
|
|
function overviewIsActive() {
|
|
return hasClass( dom.wrapper, 'overview' );
|
|
}
|
|
|
|
/**
|
|
* 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( overviewIsActive() ) {
|
|
event.preventDefault();
|
|
|
|
deactivateOverview();
|
|
|
|
indexh = this.getAttribute( 'data-index-h' );
|
|
indexv = this.getAttribute( 'data-index-v' );
|
|
|
|
slide();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates one dimension of slides by showing the slide
|
|
* with the specified index.
|
|
*
|
|
* @param {String} selector A CSS selector that will fetch
|
|
* the group of slides we are working with
|
|
* @param {Number} index The index of the slide that should be
|
|
* shown
|
|
*
|
|
* @return {Number} The index of the slide that is now shown,
|
|
* might differ from the passed in index if it was out of
|
|
* bounds.
|
|
*/
|
|
function updateSlides( selector, index ) {
|
|
|
|
// Select all slides and convert the NodeList result to
|
|
// an array
|
|
var slides = Array.prototype.slice.call( document.querySelectorAll( selector ) );
|
|
|
|
if( slides.length ) {
|
|
// Enforce max and minimum index bounds
|
|
index = Math.max(Math.min(index, slides.length - 1), 0);
|
|
|
|
slides[index].className = 'present';
|
|
|
|
for( var i = 0; i < slides.length; i++ ) {
|
|
var slide = slides[i];
|
|
|
|
// Optimization; hide all slides that are three or more steps
|
|
// away from the present slide
|
|
if( overviewIsActive() === false ) {
|
|
slide.style.display = Math.abs( index - i ) > 3 ? 'none' : 'block';
|
|
}
|
|
|
|
if( i < index ) {
|
|
// Any element previous to index is given the 'past' class
|
|
slide.className = 'past';
|
|
}
|
|
else if( i > index ) {
|
|
// Any element subsequent to index is given the 'future' class
|
|
slide.className = 'future';
|
|
}
|
|
|
|
// If this element contains vertical slides
|
|
if( slide.querySelector( 'section' ) ) {
|
|
addClass( slide, 'stack' );
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Since there are no slides we can't be anywhere beyond the
|
|
// zeroth index
|
|
index = 0;
|
|
}
|
|
|
|
return index;
|
|
|
|
}
|
|
|
|
/**
|
|
* Updates the visual slides to represent the currently
|
|
* set indices.
|
|
*/
|
|
function slide() {
|
|
indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, indexh );
|
|
indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, indexv );
|
|
|
|
// Update progress if enabled
|
|
if( config.progress ) {
|
|
dom.progressbar.style.width = ( indexh / ( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length - 1 ) ) * window.innerWidth + 'px';
|
|
}
|
|
|
|
// Close the overview if it's active
|
|
if( overviewIsActive() ) {
|
|
activateOverview();
|
|
}
|
|
|
|
updateControls();
|
|
|
|
writeURL();
|
|
}
|
|
|
|
/**
|
|
* Updates the state and link pointers of the controls.
|
|
*/
|
|
function updateControls() {
|
|
var routes = availableRoutes();
|
|
|
|
// Remove the 'enabled' class from all directions
|
|
[ dom.controlsLeft, dom.controlsRight, dom.controlsUp, dom.controlsDown ].forEach( function( node ) {
|
|
removeClass( node, 'enabled' );
|
|
} )
|
|
|
|
if( routes.left ) addClass( dom.controlsLeft, 'enabled' );
|
|
if( routes.right ) addClass( dom.controlsRight, 'enabled' );
|
|
if( routes.up ) addClass( dom.controlsUp, 'enabled' );
|
|
if( routes.down ) addClass( dom.controlsDown, 'enabled' );
|
|
}
|
|
|
|
/**
|
|
* Determine what available routes there are for navigation.
|
|
*
|
|
* @return {Object} containing four booleans: left/right/up/down
|
|
*/
|
|
function availableRoutes() {
|
|
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
|
|
var verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
|
|
|
|
return {
|
|
left: indexh > 0,
|
|
right: indexh < horizontalSlides.length - 1,
|
|
up: indexv > 0,
|
|
down: indexv < verticalSlides.length - 1
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Reads the current URL (hash) and navigates accordingly.
|
|
*/
|
|
function readURL() {
|
|
// Break the hash down to separate components
|
|
var bits = window.location.hash.slice(2).split('/');
|
|
|
|
// Read the index components of the hash
|
|
indexh = bits[0] ? parseInt( bits[0] ) : 0;
|
|
indexv = bits[1] ? parseInt( bits[1] ) : 0;
|
|
|
|
navigateTo( indexh, indexv );
|
|
}
|
|
|
|
/**
|
|
* Updates the page URL (hash) to reflect the current
|
|
* state.
|
|
*/
|
|
function writeURL() {
|
|
if( config.history ) {
|
|
var url = '/';
|
|
|
|
// Only include the minimum possible number of components in
|
|
// the URL
|
|
if( indexh > 0 || indexv > 0 ) url += indexh;
|
|
if( indexv > 0 ) url += '/' + indexv;
|
|
|
|
window.location.hash = url;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Navigate to the next slide fragment.
|
|
*
|
|
* @return {Boolean} true if there was a next fragment,
|
|
* false otherwise
|
|
*/
|
|
function nextFragment() {
|
|
// Vertical slides:
|
|
if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
|
|
var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
|
|
if( verticalFragments.length ) {
|
|
addClass( verticalFragments[0], 'visible' );
|
|
return true;
|
|
}
|
|
}
|
|
// Horizontal slides:
|
|
else {
|
|
var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
|
|
if( horizontalFragments.length ) {
|
|
addClass( horizontalFragments[0], 'visible' );
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Navigate to the previous slide fragment.
|
|
*
|
|
* @return {Boolean} true if there was a previous fragment,
|
|
* false otherwise
|
|
*/
|
|
function previousFragment() {
|
|
// Vertical slides:
|
|
if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
|
|
var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
|
|
if( verticalFragments.length ) {
|
|
removeClass( verticalFragments[ verticalFragments.length - 1 ], 'visible' );
|
|
return true;
|
|
}
|
|
}
|
|
// Horizontal slides:
|
|
else {
|
|
var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' );
|
|
if( horizontalFragments.length ) {
|
|
removeClass( horizontalFragments[ horizontalFragments.length - 1 ], 'visible' );
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function hasClass( node, klass ) {
|
|
return !!node.className.match( klass );
|
|
}
|
|
|
|
function addClass( node, klass ) {
|
|
if( !hasClass( node, klass ) ) {
|
|
node.className += ' ' + klass;
|
|
}
|
|
}
|
|
|
|
function removeClass( node, klass ) {
|
|
node.className = node.className.replace( klass, '' );
|
|
}
|
|
|
|
/**
|
|
* Triggers a navigation to the specified indices.
|
|
*
|
|
* @param {Number} h The horizontal index of the slide to show
|
|
* @param {Number} v The vertical index of the slide to show
|
|
*/
|
|
function navigateTo( h, v ) {
|
|
indexh = h === undefined ? indexh : h;
|
|
indexv = v === undefined ? indexv : v;
|
|
|
|
slide();
|
|
}
|
|
|
|
function navigateLeft() {
|
|
// Prioritize hiding fragments
|
|
if( overviewIsActive() || previousFragment() === false ) {
|
|
indexh --;
|
|
indexv = 0;
|
|
slide();
|
|
}
|
|
}
|
|
function navigateRight() {
|
|
// Prioritize revealing fragments
|
|
if( overviewIsActive() || nextFragment() === false ) {
|
|
indexh ++;
|
|
indexv = 0;
|
|
slide();
|
|
}
|
|
}
|
|
function navigateUp() {
|
|
// Prioritize hiding fragments
|
|
if( overviewIsActive() || previousFragment() === false ) {
|
|
indexv --;
|
|
slide();
|
|
}
|
|
}
|
|
function navigateDown() {
|
|
// Prioritize revealing fragments
|
|
if( overviewIsActive() || nextFragment() === false ) {
|
|
indexv ++;
|
|
slide();
|
|
}
|
|
}
|
|
|
|
// Expose some methods publicly
|
|
return {
|
|
initialize: initialize,
|
|
navigateTo: navigateTo,
|
|
navigateLeft: navigateLeft,
|
|
navigateRight: navigateRight,
|
|
navigateUp: navigateUp,
|
|
navigateDown: navigateDown
|
|
};
|
|
|
|
})();
|
|
|