TabUpdatedEvent.java

/*
 * Copyright 2009 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.Tabs.Tab;
import com.google.gwt.core.client.JavaScriptObject;

/**
 * Wraps event from chrome.tabs.onUpdated.
 * 
 * See documentation at: <a href=
 * "http://dev.chromium.org/developers/design-documents/extensions/tabs-api"
 * >Tabs API</a>
 */
public final class TabUpdatedEvent extends Event {
	/**
	 * Data object passed onTabUpdated.
	 */
	public static class ChangeInfo extends JavaScriptObject {
		public static final String STATUS_LOADING = "loading";
		public static final String STATUS_COMPLETED = "completed";

		protected ChangeInfo() {
		}

		public final native String getStatus() /*-{
												return this.status;
												}-*/;

		public final native String getUrl() /*-{
											return this.url;
											}-*/;
	}

	/**
	 * Listener interface for tab updates.
	 */
	public interface Listener {
		void onTabUpdated(int tabId, ChangeInfo changeInfo, Tab tab);
	}

	protected TabUpdatedEvent() {
	}

	public ListenerHandle addListener(Listener listener) {
		return new ListenerHandle(this, addListenerImpl(listener));
	}

	private native JavaScriptObject addListenerImpl(Listener listener) /*-{
																		var handle = function(tabId, changeInfo, tab) {
																		listener.@com.google.gwt.chrome.crx.client.events.TabUpdatedEvent.Listener::onTabUpdated(ILcom/google/gwt/chrome/crx/client/events/TabUpdatedEvent$ChangeInfo;Lcom/google/gwt/chrome/crx/client/Tabs$Tab;)(tabId, changeInfo, tab);
																		}

																		this.addListener(handle);
																		return handle;
																		}-*/;
}