From c1a7e83d75a917307320acfdcb87a5702109e979 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Tue, 29 Sep 2015 10:38:34 +0200
Subject: [PATCH] multiplexing work with socket.io 1.0+ #1281 #1276

---
 plugin/multiplex/client.js |  2 +-
 plugin/multiplex/index.js  | 28 +++++++++----------
 plugin/multiplex/master.js | 56 ++++++++++++--------------------------
 3 files changed, 33 insertions(+), 53 deletions(-)

diff --git a/plugin/multiplex/client.js b/plugin/multiplex/client.js
index e6179f6d..3ffd1e03 100644
--- a/plugin/multiplex/client.js
+++ b/plugin/multiplex/client.js
@@ -8,6 +8,6 @@
 		if (data.socketId !== socketId) { return; }
 		if( window.location.host === 'localhost:1947' ) return;
 
-		Reveal.slide(data.indexh, data.indexv, data.indexf, 'remote');
+		Reveal.setState(data.state);
 	});
 }());
diff --git a/plugin/multiplex/index.js b/plugin/multiplex/index.js
index af058ed2..40c1661c 100644
--- a/plugin/multiplex/index.js
+++ b/plugin/multiplex/index.js
@@ -1,32 +1,32 @@
+var http        = require('http');
 var express		= require('express');
 var fs			= require('fs');
 var io			= require('socket.io');
 var crypto		= require('crypto');
 
-var app			= express.createServer();
-var staticDir	= express.static;
+var app       	= express();
+var staticDir 	= express.static;
+var server    	= http.createServer(app);
 
-io				= io.listen(app);
+io = io(server);
 
 var opts = {
 	port: process.env.PORT || 1948,
 	baseDir : __dirname + '/../../'
 };
 
-io.sockets.on('connection', function(socket) {
-	socket.on('slidechanged', function(slideData) {
-		if (typeof slideData.secret == 'undefined' || slideData.secret == null || slideData.secret === '') return;
-		if (createHash(slideData.secret) === slideData.socketId) {
-			slideData.secret = null;
-			socket.broadcast.emit(slideData.socketId, slideData);
+io.on( 'connection', function( socket ) {
+	socket.on('multiplex-statechanged', function(data) {
+		if (typeof data.secret == 'undefined' || data.secret == null || data.secret === '') return;
+		if (createHash(data.secret) === data.socketId) {
+			data.secret = null;
+			socket.broadcast.emit(data.socketId, data);
 		};
 	});
 });
 
-app.configure(function() {
-	[ 'css', 'js', 'plugin', 'lib' ].forEach(function(dir) {
-		app.use('/' + dir, staticDir(opts.baseDir + dir));
-	});
+[ 'css', 'js', 'plugin', 'lib' ].forEach(function(dir) {
+	app.use('/' + dir, staticDir(opts.baseDir + dir));
 });
 
 app.get("/", function(req, res) {
@@ -47,7 +47,7 @@ var createHash = function(secret) {
 };
 
 // Actually listen
-app.listen(opts.port || null);
+server.listen( opts.port || null );
 
 var brown = '\033[33m',
 	green = '\033[32m',
diff --git a/plugin/multiplex/master.js b/plugin/multiplex/master.js
index b6a7eb7d..4becad0d 100644
--- a/plugin/multiplex/master.js
+++ b/plugin/multiplex/master.js
@@ -1,51 +1,31 @@
 (function() {
+
 	// Don't emit events from inside of notes windows
 	if ( window.location.search.match( /receiver/gi ) ) { return; }
 
 	var multiplex = Reveal.getConfig().multiplex;
 
-	var socket = io.connect(multiplex.url);
+	var socket = io.connect( multiplex.url );
 
-	var notify = function( slideElement, indexh, indexv, origin ) {
-		if( typeof origin === 'undefined' && origin !== 'remote' ) {
-			var nextindexh;
-			var nextindexv;
+	function post() {
 
-			var fragmentindex = Reveal.getIndices().f;
-			if (typeof fragmentindex == 'undefined') {
-				fragmentindex = 0;
-			}
+		var messageData = {
+			state: Reveal.getState(),
+			secret: multiplex.secret,
+			socketId: multiplex.id
+		};
 
-			if (slideElement.nextElementSibling && slideElement.parentNode.nodeName == 'SECTION') {
-				nextindexh = indexh;
-				nextindexv = indexv + 1;
-			} else {
-				nextindexh = indexh + 1;
-				nextindexv = 0;
-			}
+		socket.emit( 'multiplex-statechanged', messageData );
 
-			var slideData = {
-				indexh : indexh,
-				indexv : indexv,
-				indexf : fragmentindex,
-				nextindexh : nextindexh,
-				nextindexv : nextindexv,
-				secret: multiplex.secret,
-				socketId : multiplex.id
-			};
-
-			socket.emit('slidechanged', slideData);
-		}
-	}
-
-	Reveal.addEventListener( 'slidechanged', function( event ) {
-		notify( event.currentSlide, event.indexh, event.indexv, event.origin );
-	} );
-
-	var fragmentNotify = function( event ) {
-		notify( Reveal.getCurrentSlide(), Reveal.getIndices().h, Reveal.getIndices().v, event.origin );
 	};
 
-	Reveal.addEventListener( 'fragmentshown', fragmentNotify );
-	Reveal.addEventListener( 'fragmenthidden', fragmentNotify );
+	// Monitor events that trigger a change in state
+	Reveal.addEventListener( 'slidechanged', post );
+	Reveal.addEventListener( 'fragmentshown', post );
+	Reveal.addEventListener( 'fragmenthidden', post );
+	Reveal.addEventListener( 'overviewhidden', post );
+	Reveal.addEventListener( 'overviewshown', post );
+	Reveal.addEventListener( 'paused', post );
+	Reveal.addEventListener( 'resumed', post );
+
 }());
\ No newline at end of file