61 lines
1.7 KiB
JavaScript
61 lines
1.7 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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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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/**
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* Posts the current slide data to the notes window
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*/
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function post() {
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var slideElement = Reveal.getCurrentSlide(),
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notesElement = slideElement.querySelector( 'aside.notes' );
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var messageData = {
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notes: '',
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markdown: false,
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socketId: socketId,
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state: Reveal.getState()
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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( 'statechanged', messageData );
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}
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// When a new notes window connects, post our current state
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socket.on( 'new-subscriber', function( data ) {
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post();
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} );
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// Monitor events that trigger a change in state
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Reveal.addEventListener( 'slidechanged', post );
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Reveal.addEventListener( 'fragmentshown', post );
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Reveal.addEventListener( 'fragmenthidden', post );
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Reveal.addEventListener( 'overviewhidden', post );
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Reveal.addEventListener( 'overviewshown', post );
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Reveal.addEventListener( 'paused', post );
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Reveal.addEventListener( 'resumed', post );
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// Post the initial state
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post();
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}());
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