comments & typo correction
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Hakim El Hattab
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js/reveal.js
42
js/reveal.js
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@ -18,9 +18,11 @@
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/**
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*
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*
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* #############################################################################
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*
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*
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* Reveal.js is an easy to use HTML based slideshow enhanced by
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* sexy CSS 3D transforms.
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*
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@ -62,31 +64,39 @@
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* - Presentation overview via keyboard shortcut
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*
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* @author Hakim El Hattab | http://hakim.se
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* @version 1.0
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* @version 1.1
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*/
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var Reveal = (function(){
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var HORIZONTAL_SLIDES_SELECTOR = '#main>section',
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VERTICAL_SLIDES_SELECTOR = 'section.present>section',
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// The horizontal and verical index of the currently active slide
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indexh = 0,
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indexv = 0,
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// Configurations options, including;
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// > {Boolean} controls
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// > {String} theme
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// > {Boolean} rollingLinks
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config = {},
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// Cached references to DOM elements
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dom = {};
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/**
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* Activates the main program logic.
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* Starts up the slideshow by applying configuration
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* options and binding various events.
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*/
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function initialize( options ) {
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// Gather references to DOM elements
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// Cache references to DOM elements
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dom.controls = document.querySelector( '.controls' );
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dom.controlsLeft = document.querySelector( '.controls .left' );
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dom.controlsRight = document.querySelector( '.controls .right' );
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dom.controlsUp = document.querySelector( '.controls .up' );
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dom.controlsDown = document.querySelector( '.controls .down' );
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// Add event listeners
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// Bind all view events
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document.addEventListener('keydown', onDocumentKeyDown, false);
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document.addEventListener('touchstart', onDocumentTouchStart, false);
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window.addEventListener('hashchange', onWindowHashChange, false);
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@ -95,7 +105,7 @@ var Reveal = (function(){
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dom.controlsUp.addEventListener('click', preventAndForward( navigateUp ), false);
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dom.controlsDown.addEventListener('click', preventAndForward( navigateDown ), false);
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// Default options
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// Fall back on default options
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config.rollingLinks = options.rollingLinks === undefined ? true : options.rollingLinks;
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config.controls = options.controls === undefined ? false : options.controls;
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config.theme = options.theme === undefined ? 'default' : options.theme;
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@ -120,6 +130,9 @@ var Reveal = (function(){
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/**
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* Prevents an events defaults behavior calls the
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* specified delegate.
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*
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* @param {Function} delegate The method to call
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* after the wrapper has been executed
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*/
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function preventAndForward( delegate ) {
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return function( event ) {
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@ -135,6 +148,9 @@ var Reveal = (function(){
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*/
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function onDocumentKeyDown( event ) {
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// FFT: Use document.querySelector( ':focus' ) === null
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// instead of checking contentEditable?
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if( event.keyCode >= 37 && event.keyCode <= 40 && event.target.contentEditable === 'inherit' ) {
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switch( event.keyCode ) {
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@ -339,7 +355,7 @@ var Reveal = (function(){
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/**
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* Updates the page URL (hash) to reflect the current
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* navigational state.
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* state.
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*/
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function writeURL() {
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var url = '/';
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@ -353,12 +369,13 @@ var Reveal = (function(){
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}
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/**
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* Navigate to the nexy slide fragment.
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* Navigate to the next slide fragment.
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*
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* @return {Boolean} true if there was a next fragment,
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* false otherwise
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*/
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function nextFragment() {
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function nextFragment() {
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// Vertical slides:
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if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
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var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
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if( verticalFragments.length ) {
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@ -366,6 +383,7 @@ var Reveal = (function(){
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return true;
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}
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}
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// Horizontal slides:
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else {
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var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
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if( horizontalFragments.length ) {
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@ -384,6 +402,7 @@ var Reveal = (function(){
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* false otherwise
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*/
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function previousFragment() {
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// Vertical slides:
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if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
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var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
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if( verticalFragments.length ) {
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@ -391,6 +410,7 @@ var Reveal = (function(){
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return true;
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}
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}
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// Horizontal slides:
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else {
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var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' );
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if( horizontalFragments.length ) {
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