1 files changed, 10 insertions, 7 deletions

diff --git a/beamer/viewer/stage/stage.js b/beamer/viewer/stage/stage.js
index 201f7b4..cb94231 100644
--- a/beamer/viewer/stage/stage.js
+++ b/beamer/viewer/stage/stage.js
@@ -23,6 +23,15 @@ class Stage {
     this.audienceScreen = null;
     this.presenterScreen = null;
 
+    this.onReady = onReady;
+    this.eventHandlers = [
+      new KeyboardEventHandler(onNext, onPrevious),
+      new MouseClickEventHandler(onNext, onPrevious),
+      new TouchSwipeEventHandler(onNext, onPrevious)
+    ];
+  }
+
+  start() {
     this.projector = window.open(window.location.href, "_blank", "toolbar=0,location=0,menubar=0");
     if (this.projector == null)
       alert("Please allow pop-ups, then refresh this page.");
@@ -32,15 +41,9 @@ class Stage {
       self.audienceScreen = new Screen(self.projector, false, false);
       self.presenterScreen = new Screen(window, true, true);
       self._watchDetach();
-      onReady();
+      self.onReady();
     });
 
-    this.eventHandlers = [
-      new KeyboardEventHandler(onNext, onPrevious),
-      new MouseClickEventHandler(onNext, onPrevious),
-      new TouchSwipeEventHandler(onNext, onPrevious)
-    ];
-
     this._registerEventHandler(window);
     this._registerEventHandler(this.projector);
   }