/*
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.chrome.crx.client.events;
import com.google.gwt.chrome.crx.client.Port;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.GWT.UncaughtExceptionHandler;
/**
* Wraps event from chrome.onConnectExternal.
*
* See documentation at: <a href=
* "http://dev.chromium.org/developers/design-documents/extensions/content-scripts"
* >Content Script Messaging</a>
*
*/
public class ConnectExternalEvent extends Event {
/**
* Called when a ContentScript opens a port.
*/
public interface Listener {
void onConnectExternal(Port port);
}
/**
* Takes care of reporting exceptions to the console in hosted mode.
*
* @param listener the listener object to call back.
* @param port argument from the callback.
*/
private static void onConnectImpl(Listener listener, Port port) {
UncaughtExceptionHandler ueh = GWT.getUncaughtExceptionHandler();
if (ueh != null) {
try {
listener.onConnectExternal(port);
} catch (Exception ex) {
ueh.onUncaughtException(ex);
}
} else {
listener.onConnectExternal(port);
}
}
protected ConnectExternalEvent() {
}
public final ListenerHandle addListener(Listener listener) {
return new ListenerHandle(this, addListenerImpl(listener));
}
private native JavaScriptObject addListenerImpl(Listener listener) /*-{
var handle = function(port) {
@com.google.gwt.chrome.crx.client.events.ConnectExternalEvent::onConnectImpl(Lcom/google/gwt/chrome/crx/client/events/ConnectExternalEvent$Listener;Lcom/google/gwt/chrome/crx/client/Port;)
(listener, port);
}
this.addListener(handle);
return handle;
}-*/;
}