/*
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*
*/
package cometedgwt.auction.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextArea;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
/**
* Example class that demostrates the usage of the StreamingService framework
*
*/
public class GWTCometClient implements EntryPoint {
final private Button buttonSendMessage = new Button("Send Message");
final private TextArea textAreaHistory = new TextArea();
final private TextBox textBoxNewMessage = new TextBox();
final private Button buttonSubscribe = new Button("Subscribe");
final private TextBox textBoxTopic = new TextBox();
StreamingService streamingService;
private class KeepAliveCallback implements AsyncCallback {
public void onFailure(Throwable throwable) {
Window.alert(throwable.getMessage());
}
public void onSuccess(Object result) {
if (!buttonSendMessage.isEnabled()) {
buttonSubscribe.setEnabled(true);
}
}
}
private class ChatCallback implements AsyncCallback {
private final String queueName;
public ChatCallback(String queueName) {
this.queueName = queueName;
}
public void onFailure(Throwable throwable) {
Window.alert(throwable.getMessage());
}
public void onSuccess(Object result) {
JSONObject resultObject = (JSONObject) result;
JSONArray resultArray = (JSONArray) resultObject.get("value");
JSONString resultString = (JSONString) resultArray.get(0);
StringBuffer newText = new StringBuffer(textAreaHistory.getText());
newText.append(queueName);
newText.append(':');
newText.append(resultString.stringValue());
newText.append('\n');
textAreaHistory.setText(newText.toString());
textAreaHistory.setCursorPos(textAreaHistory.getVisibleLines());
}
}
public void onModuleLoad() {
buttonSendMessage.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (!"".equals(textBoxNewMessage.getText())) {
JSONArray array = new JSONArray();
array.set(0, new JSONString(textBoxNewMessage.getText()));
JSONObject container = new JSONObject();
container.put("value", array);
streamingService.sendMessage(textBoxTopic.getText(), container);
textBoxNewMessage.setText("");
textBoxNewMessage.setFocus(true);
}
}
});
buttonSendMessage.setEnabled(false);
buttonSubscribe.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (!"".equals(textBoxTopic.getText())) {
streamingService.subScribeToEvent(textBoxTopic.getText(), new ChatCallback(textBoxTopic.getText()));
buttonSendMessage.setEnabled(true);
}
}
});
buttonSubscribe.setEnabled(false);
textAreaHistory.setSize("300", "300");
textAreaHistory.setEnabled(false);
textBoxTopic.setText("chat");
RootPanel.get("slot1").add(textAreaHistory);
RootPanel.get("slot2").add(textBoxNewMessage);
RootPanel.get("slot3").add(buttonSendMessage);
RootPanel.get("slot4").add(textBoxTopic);
RootPanel.get("slot5").add(buttonSubscribe);
streamingService = StreamingServiceGWTClientImpl.getInstance();
streamingService.subScribeToEvent("keepAlive", new KeepAliveCallback());
}
}