public Responder(WindowExt window, final String origin, final ResponseListener listener) {
final boolean acceptAllOrigins = "*".equals(origin);
remover =
Event.addEventListener(
"message",
window,
new EventListener() {
public void handleEvent(Event event) {
final Message e = event.cast();
if (acceptAllOrigins || origin.equals(e.getOrigin())) {
listener.onMessageReceived(Responder.this, e);
}
}
});
}
/**
* Creates a new client channel.
*
* @param document the document in which to insert the iframe
* @param url the url to the remote peer
* @param listener a callback to be notified on channel events
*/
public Client(Document document, String url, final ClientListener listener) {
origin = getDomain(url);
frame = document.getBody().appendChild(createFrame(document, url));
receiver = new Responder(getCurrentWindow(), origin, listener);
remover =
Event.addEventListener(
"load",
frame,
new EventListener() {
public void handleEvent(Event event) {
// This should never call synchronously.
assert remover != null;
assert !setConnected(true);
listener.onConnected(Client.this);
remover.remove();
}
});
}