Update to reveal.js 4.6.1
Change-Id: I566737c50b93dd8c094ad3c3fa59865260b3b4ba
diff --git a/inst/reveal.js-4.6.1/js/controllers/controls.js b/inst/reveal.js-4.6.1/js/controllers/controls.js
new file mode 100644
index 0000000..734eb17
--- /dev/null
+++ b/inst/reveal.js-4.6.1/js/controllers/controls.js
@@ -0,0 +1,266 @@
+import { queryAll } from '../utils/util.js'
+import { isAndroid } from '../utils/device.js'
+
+/**
+ * Manages our presentation controls. This includes both
+ * the built-in control arrows as well as event monitoring
+ * of any elements within the presentation with either of the
+ * following helper classes:
+ * - .navigate-up
+ * - .navigate-right
+ * - .navigate-down
+ * - .navigate-left
+ * - .navigate-next
+ * - .navigate-prev
+ */
+export default class Controls {
+
+ constructor( Reveal ) {
+
+ this.Reveal = Reveal;
+
+ this.onNavigateLeftClicked = this.onNavigateLeftClicked.bind( this );
+ this.onNavigateRightClicked = this.onNavigateRightClicked.bind( this );
+ this.onNavigateUpClicked = this.onNavigateUpClicked.bind( this );
+ this.onNavigateDownClicked = this.onNavigateDownClicked.bind( this );
+ this.onNavigatePrevClicked = this.onNavigatePrevClicked.bind( this );
+ this.onNavigateNextClicked = this.onNavigateNextClicked.bind( this );
+
+ }
+
+ render() {
+
+ const rtl = this.Reveal.getConfig().rtl;
+ const revealElement = this.Reveal.getRevealElement();
+
+ this.element = document.createElement( 'aside' );
+ this.element.className = 'controls';
+ this.element.innerHTML =
+ `<button class="navigate-left" aria-label="${ rtl ? 'next slide' : 'previous slide' }"><div class="controls-arrow"></div></button>
+ <button class="navigate-right" aria-label="${ rtl ? 'previous slide' : 'next slide' }"><div class="controls-arrow"></div></button>
+ <button class="navigate-up" aria-label="above slide"><div class="controls-arrow"></div></button>
+ <button class="navigate-down" aria-label="below slide"><div class="controls-arrow"></div></button>`;
+
+ this.Reveal.getRevealElement().appendChild( this.element );
+
+ // There can be multiple instances of controls throughout the page
+ this.controlsLeft = queryAll( revealElement, '.navigate-left' );
+ this.controlsRight = queryAll( revealElement, '.navigate-right' );
+ this.controlsUp = queryAll( revealElement, '.navigate-up' );
+ this.controlsDown = queryAll( revealElement, '.navigate-down' );
+ this.controlsPrev = queryAll( revealElement, '.navigate-prev' );
+ this.controlsNext = queryAll( revealElement, '.navigate-next' );
+
+ // The left, right and down arrows in the standard reveal.js controls
+ this.controlsRightArrow = this.element.querySelector( '.navigate-right' );
+ this.controlsLeftArrow = this.element.querySelector( '.navigate-left' );
+ this.controlsDownArrow = this.element.querySelector( '.navigate-down' );
+
+ }
+
+ /**
+ * Called when the reveal.js config is updated.
+ */
+ configure( config, oldConfig ) {
+
+ this.element.style.display = config.controls ? 'block' : 'none';
+
+ this.element.setAttribute( 'data-controls-layout', config.controlsLayout );
+ this.element.setAttribute( 'data-controls-back-arrows', config.controlsBackArrows );
+
+ }
+
+ bind() {
+
+ // Listen to both touch and click events, in case the device
+ // supports both
+ let pointerEvents = [ 'touchstart', 'click' ];
+
+ // Only support touch for Android, fixes double navigations in
+ // stock browser
+ if( isAndroid ) {
+ pointerEvents = [ 'touchstart' ];
+ }
+
+ pointerEvents.forEach( eventName => {
+ this.controlsLeft.forEach( el => el.addEventListener( eventName, this.onNavigateLeftClicked, false ) );
+ this.controlsRight.forEach( el => el.addEventListener( eventName, this.onNavigateRightClicked, false ) );
+ this.controlsUp.forEach( el => el.addEventListener( eventName, this.onNavigateUpClicked, false ) );
+ this.controlsDown.forEach( el => el.addEventListener( eventName, this.onNavigateDownClicked, false ) );
+ this.controlsPrev.forEach( el => el.addEventListener( eventName, this.onNavigatePrevClicked, false ) );
+ this.controlsNext.forEach( el => el.addEventListener( eventName, this.onNavigateNextClicked, false ) );
+ } );
+
+ }
+
+ unbind() {
+
+ [ 'touchstart', 'click' ].forEach( eventName => {
+ this.controlsLeft.forEach( el => el.removeEventListener( eventName, this.onNavigateLeftClicked, false ) );
+ this.controlsRight.forEach( el => el.removeEventListener( eventName, this.onNavigateRightClicked, false ) );
+ this.controlsUp.forEach( el => el.removeEventListener( eventName, this.onNavigateUpClicked, false ) );
+ this.controlsDown.forEach( el => el.removeEventListener( eventName, this.onNavigateDownClicked, false ) );
+ this.controlsPrev.forEach( el => el.removeEventListener( eventName, this.onNavigatePrevClicked, false ) );
+ this.controlsNext.forEach( el => el.removeEventListener( eventName, this.onNavigateNextClicked, false ) );
+ } );
+
+ }
+
+ /**
+ * Updates the state of all control/navigation arrows.
+ */
+ update() {
+
+ let routes = this.Reveal.availableRoutes();
+
+ // Remove the 'enabled' class from all directions
+ [...this.controlsLeft, ...this.controlsRight, ...this.controlsUp, ...this.controlsDown, ...this.controlsPrev, ...this.controlsNext].forEach( node => {
+ node.classList.remove( 'enabled', 'fragmented' );
+
+ // Set 'disabled' attribute on all directions
+ node.setAttribute( 'disabled', 'disabled' );
+ } );
+
+ // Add the 'enabled' class to the available routes; remove 'disabled' attribute to enable buttons
+ if( routes.left ) this.controlsLeft.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.right ) this.controlsRight.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.up ) this.controlsUp.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.down ) this.controlsDown.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+ // Prev/next buttons
+ if( routes.left || routes.up ) this.controlsPrev.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.right || routes.down ) this.controlsNext.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+ // Highlight fragment directions
+ let currentSlide = this.Reveal.getCurrentSlide();
+ if( currentSlide ) {
+
+ let fragmentsRoutes = this.Reveal.fragments.availableRoutes();
+
+ // Always apply fragment decorator to prev/next buttons
+ if( fragmentsRoutes.prev ) this.controlsPrev.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( fragmentsRoutes.next ) this.controlsNext.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+ // Apply fragment decorators to directional buttons based on
+ // what slide axis they are in
+ if( this.Reveal.isVerticalSlide( currentSlide ) ) {
+ if( fragmentsRoutes.prev ) this.controlsUp.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( fragmentsRoutes.next ) this.controlsDown.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ }
+ else {
+ if( fragmentsRoutes.prev ) this.controlsLeft.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( fragmentsRoutes.next ) this.controlsRight.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ }
+
+ }
+
+ if( this.Reveal.getConfig().controlsTutorial ) {
+
+ let indices = this.Reveal.getIndices();
+
+ // Highlight control arrows with an animation to ensure
+ // that the viewer knows how to navigate
+ if( !this.Reveal.hasNavigatedVertically() && routes.down ) {
+ this.controlsDownArrow.classList.add( 'highlight' );
+ }
+ else {
+ this.controlsDownArrow.classList.remove( 'highlight' );
+
+ if( this.Reveal.getConfig().rtl ) {
+
+ if( !this.Reveal.hasNavigatedHorizontally() && routes.left && indices.v === 0 ) {
+ this.controlsLeftArrow.classList.add( 'highlight' );
+ }
+ else {
+ this.controlsLeftArrow.classList.remove( 'highlight' );
+ }
+
+ } else {
+
+ if( !this.Reveal.hasNavigatedHorizontally() && routes.right && indices.v === 0 ) {
+ this.controlsRightArrow.classList.add( 'highlight' );
+ }
+ else {
+ this.controlsRightArrow.classList.remove( 'highlight' );
+ }
+ }
+ }
+ }
+ }
+
+ destroy() {
+
+ this.unbind();
+ this.element.remove();
+
+ }
+
+ /**
+ * Event handlers for navigation control buttons.
+ */
+ onNavigateLeftClicked( event ) {
+
+ event.preventDefault();
+ this.Reveal.onUserInput();
+
+ if( this.Reveal.getConfig().navigationMode === 'linear' ) {
+ this.Reveal.prev();
+ }
+ else {
+ this.Reveal.left();
+ }
+
+ }
+
+ onNavigateRightClicked( event ) {
+
+ event.preventDefault();
+ this.Reveal.onUserInput();
+
+ if( this.Reveal.getConfig().navigationMode === 'linear' ) {
+ this.Reveal.next();
+ }
+ else {
+ this.Reveal.right();
+ }
+
+ }
+
+ onNavigateUpClicked( event ) {
+
+ event.preventDefault();
+ this.Reveal.onUserInput();
+
+ this.Reveal.up();
+
+ }
+
+ onNavigateDownClicked( event ) {
+
+ event.preventDefault();
+ this.Reveal.onUserInput();
+
+ this.Reveal.down();
+
+ }
+
+ onNavigatePrevClicked( event ) {
+
+ event.preventDefault();
+ this.Reveal.onUserInput();
+
+ this.Reveal.prev();
+
+ }
+
+ onNavigateNextClicked( event ) {
+
+ event.preventDefault();
+ this.Reveal.onUserInput();
+
+ this.Reveal.next();
+
+ }
+
+
+}
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