How to detect when Chrome's “click-to-play” Flash blocking feature is currently active

Question

Tracking state of Chrome\'s Click-to-play feature

How do you detect that a Flash plugin has been temporarily disabled, or, conversely, detect that it has been enabled

Answer 1

To circumvent the Chrome click-to-play throttling, load your SWF from the same domain and protocol as your site.

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You can use the AS3 ThrottleEvent to detect when the SWF has been throttled.

// AS3 code
import flash.events.ThrottleEvent;
import flash.external.ExternalInterface;

stage.addEventListener(ThrottleEvent.THROTTLE, onThrottleEvent);

private function onThrottleEvent(e:ThrottleEvent) {
    ExternalInterface.call("onThrottleEvent", e.state); // call javascript function 
}

You can setup an ExternalInterface call to keep track of this state in JavaScript, in JavaScript manage z-index of your SWF based on if it's throttled or not.

// JS Code
var IS_THROTTLED = false;

window.onThrottleEvent = function (throttleState) {
  IS_THROTTLED = (throttleState === "throttle");
}