69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
(function() {
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// don't emit events from inside the previews themselves
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if( window.location.search.match( /receiver/gi ) ) { return; }
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var socket = io.connect( window.location.origin );
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var socketId = Math.random().toString().slice( 2 );
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console.log( 'View slide notes at ' + window.location.origin + '/notes/' + socketId );
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window.open( window.location.origin + '/notes/' + socketId, 'notes-' + socketId );
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// Fires when a fragment is shown
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Reveal.addEventListener( 'fragmentshown', function( event ) {
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var fragmentData = {
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fragment : 'next',
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socketId : socketId
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};
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socket.emit('fragmentchanged', fragmentData);
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} );
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// Fires when a fragment is hidden
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Reveal.addEventListener( 'fragmenthidden', function( event ) {
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var fragmentData = {
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fragment : 'previous',
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socketId : socketId
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};
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socket.emit( 'fragmentchanged', fragmentData );
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} );
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// Fires when slide is changed
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Reveal.addEventListener( 'slidechanged', function( event ) {
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var nextindexh,
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nextindexv,
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slideElement = event.currentSlide,
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notesElement = slideElement.querySelector( 'aside.notes' );
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if( slideElement.nextElementSibling && slideElement.parentNode.nodeName == 'SECTION' ) {
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nextindexh = event.indexh;
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nextindexv = event.indexv + 1;
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} else {
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nextindexh = event.indexh + 1;
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nextindexv = 0;
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}
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var messageData = {
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notes : '',
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indexh : event.indexh,
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indexv : event.indexv,
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nextindexh : nextindexh,
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nextindexv : nextindexv,
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socketId : socketId,
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markdown : false
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};
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// Look for notes defined in a slide attribute
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if( slideElement.hasAttribute( 'data-notes' ) ) {
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messageData.notes = slideElement.getAttribute( 'data-notes' );
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}
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// Look for notes defined in an aside element
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if( notesElement ) {
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messageData.notes = notesElement.innerHTML;
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messageData.markdown = typeof notesElement.getAttribute( 'data-markdown' ) === 'string';
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}
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socket.emit( 'slidechanged', messageData );
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} );
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}());
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