@Override
protected void onDetach() {
if (messageEventListeners != null) {
for (final PostMessageEventListener messageEventListener : messageEventListeners) {
final JavaScriptObject postMessageListenerFunction =
postMessageListenerFunctions.remove(messageEventListener.getActionToWatch());
removeFrameNotificationListener(postMessageListenerFunction);
}
}
super.onDetach();
}
@Override
protected void onAttach() {
if (messageEventListeners != null) {
for (final PostMessageEventListener messageEventListener : messageEventListeners) {
if (!postMessageListenerFunctions.containsKey(messageEventListener.getActionToWatch())) {
postMessageListenerFunctions.put(
messageEventListener.getActionToWatch(),
addFrameNotificationListener(messageEventListener));
}
}
}
super.onAttach();
}