remove legacy feature detection for <IE11
This commit is contained in:
Hakim El Hattab
parent
d545d79cd7
commit
6ab65d4b8a
81
js/reveal.js
81
js/reveal.js
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@ -243,9 +243,6 @@
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// Enable slide navigation via mouse wheel
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mouseWheel: false,
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// Apply a 3D roll to links on hover
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rollingLinks: false,
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// Opens links in an iframe preview overlay
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// Add `data-preview-link` and `data-preview-link="false"` to customise each link
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// individually
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@ -436,6 +433,7 @@
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checkCapabilities();
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/*
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if( !features.transforms2d && !features.transforms3d ) {
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document.body.setAttribute( 'class', 'no-transforms' );
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@ -458,6 +456,7 @@
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// using JavaScript to control the presentation
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return;
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}
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*/
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// Cache references to key DOM elements
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dom.wrapper = document.querySelector( '.reveal' );
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@ -493,15 +492,6 @@
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let testElement = document.createElement( 'div' );
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features.transforms3d = 'perspective' in testElement.style;
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features.transforms2d = 'transform' in testElement.style;
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features.canvas = !!document.createElement( 'canvas' ).getContext;
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// Transitions in the overview are disabled in desktop and
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// Safari due to lag
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features.overviewTransitions = !/Version\/[\d\.]+.*Safari/.test( UA );
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// Flags if we should use zoom instead of transform to scale
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// up slides. Zoom produces crisper results but has a lot of
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// xbrowser quirks so we only use it in whitelsited browsers.
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@ -1343,9 +1333,6 @@
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// Remove the previously configured transition class
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dom.wrapper.classList.remove( oldTransition );
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// Force linear transition based on browser capabilities
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if( features.transforms3d === false ) config.transition = 'linear';
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dom.wrapper.classList.add( config.transition );
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dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed );
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@ -1393,14 +1380,6 @@
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document.removeEventListener( 'mousewheel', onDocumentMouseScroll, false );
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}
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// Rolling 3D links
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if( config.rollingLinks ) {
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enableRollingLinks();
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}
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else {
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disableRollingLinks();
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}
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// Auto-hide the mouse pointer when its inactive
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if( config.hideInactiveCursor ) {
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document.addEventListener( 'mousemove', onDocumentCursorActive, false );
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@ -1442,7 +1421,7 @@
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}
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// Generate auto-slide controls if needed
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if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable && features.canvas && features.requestAnimationFrame ) {
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if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable ) {
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autoSlidePlayer = new Playback( dom.wrapper, function() {
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return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 );
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} );
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@ -2009,50 +1988,6 @@
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}
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/**
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* Wrap all links in 3D goodness.
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*/
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function enableRollingLinks() {
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if( features.transforms3d && !( 'msPerspective' in document.body.style ) ) {
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var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a' );
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for( var i = 0, len = anchors.length; i < len; i++ ) {
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var anchor = anchors[i];
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if( anchor.textContent && !anchor.querySelector( '*' ) && ( !anchor.className || !anchor.classList.contains( anchor, 'roll' ) ) ) {
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var span = document.createElement('span');
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span.setAttribute('data-title', anchor.text);
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span.innerHTML = anchor.innerHTML;
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anchor.classList.add( 'roll' );
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anchor.innerHTML = '';
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anchor.appendChild(span);
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}
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}
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}
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}
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/**
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* Unwrap all 3D links.
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*/
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function disableRollingLinks() {
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var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a.roll' );
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for( var i = 0, len = anchors.length; i < len; i++ ) {
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var anchor = anchors[i];
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var span = anchor.querySelector( 'span' );
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if( span ) {
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anchor.classList.remove( 'roll' );
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anchor.innerHTML = span.innerHTML;
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}
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}
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}
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/**
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* Bind preview frame links.
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*
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@ -2459,13 +2394,6 @@
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overview = true;
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dom.wrapper.classList.add( 'overview' );
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dom.wrapper.classList.remove( 'overview-deactivating' );
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if( features.overviewTransitions ) {
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setTimeout( function() {
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dom.wrapper.classList.add( 'overview-animated' );
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}, 1 );
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}
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// Don't auto-slide while in overview mode
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cancelAutoSlide();
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@ -2574,7 +2502,6 @@
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overview = false;
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dom.wrapper.classList.remove( 'overview' );
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dom.wrapper.classList.remove( 'overview-animated' );
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// Temporarily add a class so that transitions can do different things
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// depending on whether they are exiting/entering overview, or just
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@ -5974,7 +5901,7 @@
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event.preventDefault && event.preventDefault();
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}
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// ESC or O key
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else if ( ( keyCode === 27 || keyCode === 79 ) && features.transforms3d ) {
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else if( keyCode === 27 || keyCode === 79 ) {
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if( dom.overlay ) {
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closeOverlay();
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}
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