From 3eb7038a153b12245cffbc840a727a764d82b333 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Sun, 4 May 2014 10:10:21 +0200
Subject: [PATCH] sync server-side speaker notes after notes window opens

---
 plugin/notes-server/client.js  |  7 ++++++-
 plugin/notes-server/index.js   |  8 ++++++--
 plugin/notes-server/notes.html | 16 ++++++++++++++--
 3 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/plugin/notes-server/client.js b/plugin/notes-server/client.js
index f7ecfa2..628586f 100644
--- a/plugin/notes-server/client.js
+++ b/plugin/notes-server/client.js
@@ -36,10 +36,15 @@
 			messageData.markdown = typeof notesElement.getAttribute( 'data-markdown' ) === 'string';
 		}
 
-		socket.emit( 'state', messageData );
+		socket.emit( 'statechanged', messageData );
 
 	}
 
+	// When a new notes window connects, post our current state
+	socket.on( 'connect', function( data ) {
+		post();
+	} );
+
 	// Monitor events that trigger a change in state
 	Reveal.addEventListener( 'slidechanged', post );
 	Reveal.addEventListener( 'fragmentshown', post );
diff --git a/plugin/notes-server/index.js b/plugin/notes-server/index.js
index b6779d3..df917f1 100644
--- a/plugin/notes-server/index.js
+++ b/plugin/notes-server/index.js
@@ -16,8 +16,12 @@ var opts = {
 
 io.sockets.on( 'connection', function( socket ) {
 
-	socket.on( 'state', function( state ) {
-		socket.broadcast.emit( 'state', state );
+	socket.on( 'connect', function( data ) {
+		socket.broadcast.emit( 'connect', data );
+	});
+
+	socket.on( 'statechanged', function( data ) {
+		socket.broadcast.emit( 'statechanged', data );
 	});
 
 });
diff --git a/plugin/notes-server/notes.html b/plugin/notes-server/notes.html
index 4ff48f1..72d0317 100644
--- a/plugin/notes-server/notes.html
+++ b/plugin/notes-server/notes.html
@@ -187,7 +187,7 @@
 			var socket = io.connect( window.location.origin ),
 				socketId = '{{socketId}}';
 
-			socket.on( 'state', function( data ) {
+			socket.on( 'statechanged', function( data ) {
 
 				// ignore data from sockets that aren't ours
 				if( data.socketId !== socketId ) { return; }
@@ -206,6 +206,18 @@
 
 			} );
 
+			window.addEventListener( 'message', function( event ) {
+
+				var data = JSON.parse( event.data );
+
+				if( data && data.namespace === 'reveal' ) {
+					if( /ready/.test( data.eventName ) ) {
+						socket.emit( 'connect', { socketId: socketId } );
+					}
+				}
+
+			} );
+
 			/**
 			 * Called when the main window sends an updated state.
 			 */
@@ -266,7 +278,7 @@
 				].join( '&' );
 
 				var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
-				var currentURL = '/?' + params + hash;
+				var currentURL = '/?' + params + '&postMessageEvents=true' + hash;
 				var upcomingURL = '/?' + params + '&controls=false' + hash;
 
 				currentSlide = document.createElement( 'iframe' );