net.officefloor.tutorial.cometmanualapp.client.CometManualAppEntryPoint.java Source code

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Here is the source code for net.officefloor.tutorial.cometmanualapp.client.CometManualAppEntryPoint.java

Source

/*
 * OfficeFloor - http://www.officefloor.net
 * Copyright (C) 2005-2013 Daniel Sagenschneider
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.officefloor.tutorial.cometmanualapp.client;

import net.officefloor.plugin.gwt.comet.api.OfficeFloorComet;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
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.DialogBox;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
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.VerticalPanel;

/**
 * Comet Manual App {@link EntryPoint}.
 * 
 * @author Daniel Sagenschneider
 */
// START SNIPPET: example
public class CometManualAppEntryPoint implements EntryPoint {

    /**
     * {@link UserNameService}.
     */
    private final UserNameServiceAsync userNameService = GWT.create(UserNameService.class);

    @Override
    public void onModuleLoad() {

        // Vertically align contents
        RootPanel panel = RootPanel.get("chat");
        VerticalPanel chatPanel = new VerticalPanel();
        panel.add(chatPanel);

        // Provide dialog box for user name
        final DialogBox dialogBox = new DialogBox();
        dialogBox.setModal(true);
        HorizontalPanel userNamePanel = new HorizontalPanel();
        dialogBox.add(userNamePanel);
        userNamePanel.add(new Label("Enter user name: "));
        final TextBox userNameTextBox = new TextBox();
        userNamePanel.add(userNameTextBox);
        Button userNameSubmit = new Button("submit");
        userNamePanel.add(userNameSubmit);
        dialogBox.show();
        dialogBox.center();
        userNameSubmit.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                CometManualAppEntryPoint.this.userNameService.login(userNameTextBox.getText(),
                        new AsyncCallback<Void>() {
                            @Override
                            public void onSuccess(Void result) {
                                dialogBox.hide();
                            }

                            @Override
                            public void onFailure(Throwable caught) {
                                Window.alert("Failed to specify user name");
                            }
                        });
            }
        });

        // Provide the text area to contain conversation
        final TextArea conversation = new TextArea();
        conversation.setReadOnly(true);
        conversation.setSize("100%", "300px");
        chatPanel.add(conversation);

        // Handle listening for messages
        OfficeFloorComet.subscribe(ConversationSubscription.class, new ConversationSubscription() {
            @Override
            public void message(ConversationMessage message) {
                conversation.setText(conversation.getText() + "\n" + message.getName() + ": " + message.getText());
            }
        }, null);

        // Provide means to add message
        HorizontalPanel messagePanel = new HorizontalPanel();
        chatPanel.add(messagePanel);
        final TextBox message = new TextBox();
        message.setWidth("80%");
        messagePanel.add(message);
        Button send = new Button("send");
        messagePanel.add(send);

        // Handle submitting a message
        final ConversationSubscription publisher = OfficeFloorComet.createPublisher(ConversationSubscription.class);
        send.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                String messageText = message.getText();
                publisher.message(new ConversationMessage(messageText));
            }
        });
    }
}
// END SNIPPET: example