fiv out of sync speaker view after presentation reloads #2822 #3032

plugin/notes/speaker-view.html

@@ -435,6 +435,7 @@
 						setupKeyboard();
 						setupNotes();
 						setupTimer();
+						setupHeartbeat();
 					}
 
 				}
@@ -536,6 +537,18 @@
 
 				}
 
+				/**
+				 * We send out a heartbeat at all times to ensure we can
+				 * reconnect with the main presentation window after reloads.
+				 */
+				function setupHeartbeat() {
+
+					setInterval( () => {
+						window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'heartbeat'} ), '*' );
+					}, 1000 );
+
+				}
+
 				function getTimings( callback ) {
 
 					callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) {