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make speaker notes keyboard accessible 

Places div.speaker-notes in default kbd Tab order, and when focused,
prevent slide navigation with up/down arrows, allowing up/down arrow
keys to scroll div.speaker-notes.
This commit is contained in:
Jason Kiss 2016-05-10 11:02:45 +12:00
parent 3d49b1dea3
commit dec6d1745b
1 changed files with 3 additions and 1 deletions
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4
js/reveal.js
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@ -495,6 +495,7 @@
// Element containing notes that are visible to the audience
dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null );
dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' );
dom.speakerNotes.setAttribute( 'tabindex', '0');
// Overlay graphic which is displayed during the paused mode
createSingletonNode( dom.wrapper, 'div', 'pause-overlay', null );
@ -3963,10 +3964,11 @@
// the keyboard
var activeElementIsCE = document.activeElement && document.activeElement.contentEditable !== 'inherit';
var activeElementIsInput = document.activeElement && document.activeElement.tagName && /input|textarea/i.test( document.activeElement.tagName );
var activeElementIsNotes = document.activeElement && document.activeElement.className && /speaker-notes/i.test( document.activeElement.className);
// Disregard the event if there's a focused element or a
// keyboard modifier key is present
if( activeElementIsCE || activeElementIsInput || (event.shiftKey && event.keyCode !== 32) || event.altKey || event.ctrlKey || event.metaKey ) return;
if( activeElementIsCE || activeElementIsInput || activeElementIsNotes || (event.shiftKey && event.keyCode !== 32) || event.altKey || event.ctrlKey || event.metaKey ) return;
// While paused only allow resume keyboard events; 'b', '.''
var resumeKeyCodes = [66,190,191];