net.officefloor.tutorial.gwtservice.client.GwtAppEntryPoint.java Source code

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Here is the source code for net.officefloor.tutorial.gwtservice.client.GwtAppEntryPoint.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.gwtservice.client;

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.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * GWT App {@link EntryPoint}.
 * 
 * @author Daniel Sagenschneider
 */
// START SNIPPET: example
public class GwtAppEntryPoint implements EntryPoint {

    private final HighLowGameAsync service = GWT.create(HighLowGame.class);

    @Override
    public void onModuleLoad() {

        // Obtain panel to load game
        Panel panel = RootPanel.get("HighLowGame");

        // Add Game widgets
        VerticalPanel gamePanel = new VerticalPanel();
        panel.add(gamePanel);
        gamePanel.add(new Label("Enter a number (between 1 and 100):"));
        HorizontalPanel tryPanel = new HorizontalPanel();
        gamePanel.add(tryPanel);
        final TextBox text = new TextBox();
        tryPanel.add(text);
        final Button button = new Button("Try");
        tryPanel.add(button);
        final Label message = new Label();
        gamePanel.add(message);

        // Handle try button click
        button.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {

                // Obtain the value to try
                Integer value;
                try {
                    value = Integer.valueOf(text.getText());
                } catch (NumberFormatException ex) {
                    Window.alert("Please enter a valid number");
                    return;
                }

                // Attempt try (calls on Server)
                service.attempt(value, new AsyncCallback<Result>() {
                    @Override
                    public void onSuccess(Result result) {
                        switch (result.getAnswer()) {
                        case HIGHER:
                            message.setText("Higher");
                            text.setText("");
                            break;
                        case LOWER:
                            message.setText("Lower");
                            text.setText("");
                            break;
                        case CORRECT:
                            message.setText("Correct. Well done!");
                            text.setEnabled(false);
                            button.setEnabled(false);
                            break;
                        case NO_FURTHER_ATTEMPTS:
                            message.setText("No further attempts. Number was " + result.getNumber());
                            text.setEnabled(false);
                            button.setEnabled(false);
                            break;
                        }
                    }

                    @Override
                    public void onFailure(Throwable caught) {
                        Window.alert("Technical failure: " + caught.getMessage() + " ["
                                + caught.getClass().getName() + "]");
                    }
                });
            }
        });
    }

}
// END SNIPPET: example