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

1 files changed, 35 insertions, 0 deletions

diff --git a/js/reveal.slidenotes.js b/js/reveal.slidenotes.js
new file mode 100644
index 0000000..b686ec9
--- /dev/null
+++ b/js/reveal.slidenotes.js
@@ -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);
+	} );
+}());