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