Toggling Event Listeners

Relevant Cesium Source

Relevant Google Earth Source (link)

var eventListenerActive;

function enableListener() {
                        if (!eventListenerActive) {
                            google.earth.addEventListener(placemark, 'click', myEventHandler);
                            eventListenerActive = true;
                        }
                    }

function disableListener() {
                        if (eventListenerActive) {
                            google.earth.removeEventListener(placemark, 'click', myEventHandler);
                            eventListenerActive = false;
                        }
                    }

function myEventHandler(event) {
                        // wrap alerts in API callbacks and event handlers
                        // in a setTimeout to prevent deadlock in some browsers
                        setTimeout(function() {
                            alert('You clicked the placemark!');
                        }, 0);
                    }