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conditional loading of socket.io and the notes client js based on window host

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Hakim El Hattab 2012-07-04 14:18:09 -04:00
parent 421afe6368
commit 0e86400943
4 changed files with 52 additions and 6 deletions
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18
index.html
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@ -4,7 +4,7 @@
<head> <head>
<meta charset="utf-8"> <meta charset="utf-8">
<title>reveal.js</title> <title>reveal.js - HTML5 Presentations</title>
<meta name="description" content="An easy to use CSS 3D slideshow tool for quickly creating good looking HTML presentations."> <meta name="description" content="An easy to use CSS 3D slideshow tool for quickly creating good looking HTML presentations.">
<meta name="author" content="Hakim El Hattab"> <meta name="author" content="Hakim El Hattab">
@ -313,11 +313,21 @@ linkify( 'a' );
transition: query.transition || 'default' // default/cube/page/concave/linear(2d) transition: query.transition || 'default' // default/cube/page/concave/linear(2d)
}); });
// Fire off syntax highlighting for potential code samples in the slides
hljs.initHighlightingOnLoad(); hljs.initHighlightingOnLoad();
// If we're runnning the notes node server we need to include some
// additional JS
if( window.location.host === 'localhost:1947' ) {
var notes_socket = document.createElement( 'script' );
notes_socket.setAttribute( 'src', 'socket.io/socket.io.js' );
document.body.appendChild( notes_socket );
var notes_client = document.createElement( 'script' );
notes_client.setAttribute( 'src', 'lib/slidenotes/client.js' );
document.body.appendChild( notes_client );
}
</script> </script>
<!-- The next two lines enable the speaker notes server -->
<script src="socket.io/socket.io.js"></script>
<script src="lib/slidenotes/client.js"></script>
</body> </body>
</html> </html>

35
js/reveal.slidenotes.js Normal file
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@ -0,0 +1,35 @@
(function() {
// don't emit events from inside the previews themselves
var qs = window.location.href.split('?');
if (qs.length > 1 && qs[1].match('receiver')) { 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);
Reveal.addEventListener( 'slidechanged', function( event ) {
var nextindexh;
var nextindexv;
var slideElement = event.currentSlide;
if (slideElement.nextElementSibling && slideElement.parentNode.nodeName == 'SECTION') {
nextindexh = event.indexh;
nextindexv = event.indexv + 1;
} else {
nextindexh = event.indexh + 1;
nextindexv = 0;
}
var notes = slideElement.querySelector('aside.notes');
var slideData = {
notes : notes ? notes.innerHTML : '',
indexh : event.indexh,
indexv : event.indexv,
nextindexh : nextindexh,
nextindexv : nextindexv,
socketId : socketId
};
socket.emit('slidechanged', slideData);
} );
}());

1
lib/slidenotes/client.js
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@ -5,6 +5,7 @@
var socket = io.connect(window.location.origin); var socket = io.connect(window.location.origin);
var socketId = Math.random().toString().slice(2); var socketId = Math.random().toString().slice(2);
console.log('View slide notes at ' + window.location.origin + '/notes/' + socketId); console.log('View slide notes at ' + window.location.origin + '/notes/' + socketId);
Reveal.addEventListener( 'slidechanged', function( event ) { Reveal.addEventListener( 'slidechanged', function( event ) {

2
lib/slidenotes/notes.html
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@ -3,7 +3,7 @@
<head> <head>
<meta charset="utf-8"> <meta charset="utf-8">
<title>Slide Notes</title> <title>reveal.js - Slide Notes</title>
<style> <style>
#notes { #notes {