static/tinymce/tiny_mce_src.js
function eventHandler(evt, args) {
			var type = evt.type;

			// Don't fire events when it's removed
			if (self.removed)
				return;

			// Sends the native event out to a global dispatcher then to the specific event dispatcher
			if (self.onEvent.dispatch(self, evt, args) !== false) {
				self[nativeToDispatcherMap[evt.fakeType || evt.type]].dispatch(self, evt, args);
			}
		}
function eventHandler(evt, args) {
			var type = evt.type;

			// Don't fire events when it's removed
			if (self.removed)
				return;

			// Sends the native event out to a global dispatcher then to the specific event dispatcher
			if (self.onEvent.dispatch(self, evt, args) !== false) {
				self[nativeToDispatcherMap[evt.fakeType || evt.type]].dispatch(self, evt, args);
			}
		}
Handler that takes a native event and sends it out to a dispatcher like onKeyDown