feat(ServerSideRendering): opt-in event handling

README.markdown

@@ -61,6 +61,8 @@ var renderer = new Marklib.Rendering(document, {
 Marklib triggers events that can be listened to with `instance.on('event-name')`. Events are build with 
 `wolfy87-eventemitter` (https://github.com/Olical/EventEmitter). The following Events are available:
 
+Before you can actually receive events, you need to register the event handler with `registerEvents`
+
 | Event-Name    | Description | Arguments |
 | ------------- |-------------|-------------|
 | `click`         | triggered when clicked on a marking.  | `(originalEvent, instanceHierarchy)`

src/main/RenderingEvents.js

@@ -92,15 +92,13 @@ export default class RenderingEvents extends EventEmitter {
 
     return null;
   }
-
-  static globalEmitter() {
-    return RenderingEvents.staticEventListener;
-  }
 }
 
+RenderingEvents.globalEmitter = () => RenderingEvents.staticEventListener;
+
 RenderingEvents.staticEventListener = new EventEmitter();
 
-const init = () => {
+export const registerEvents = () => {
   const currentHoverInstances = new Set();
   const betweenInstances = new Set();
 
@@ -219,8 +217,3 @@ const init = () => {
     }
   }, true);
 };
-
-if (!global.__MARKLIB_EVENTS__) {
-  global.__MARKLIB_EVENTS__ = true;
-  init();
-}

src/main/modules/Marklib.js

@@ -1,6 +1,6 @@
 import Rendering from '../Rendering';
 import Util from '../util/Util';
 import RenderResult from '../RenderResult';
-import RenderingEvents from '../RenderingEvents';
+import RenderingEvents, { registerEvents } from '../RenderingEvents';
 
-export { Rendering, Util, RenderResult, RenderingEvents };
+export { Rendering, Util, RenderResult, RenderingEvents, registerEvents };

src/test/RenderingEvents.js

@@ -3,8 +3,9 @@
 import setup from 'setup';
 import Rendering from 'Rendering';
 import RenderResult from 'RenderResult';
-import { EVENT_CLICK, EVENT_MOUSEENTER, EVENT_MOUSELEAVE } from 'RenderingEvents';
+import { EVENT_CLICK, EVENT_MOUSEENTER, EVENT_MOUSELEAVE, registerEvents } from 'RenderingEvents';
 setup();
+registerEvents();
 
 /**
  * @return {Rendering}