com.google.gdbe.client.dialogs.AboutDialog.java Source code

Introduction

Here is the source code for com.google.gdbe.client.dialogs.AboutDialog.java

Source

package com.google.gdbe.client.dialogs;

import com.google.gdbe.client.events.CommandHandler;
import com.google.gdbe.client.resources.icons.Icons;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * A dialog window displaying details of the application.
 */
public class AboutDialog extends Dialog {

    protected static AboutDialog instance;

    /**
     * Retrieves the common instance of this dialog.
     * @param handler the command handler
     * @return the common instance of this dialog
     */
    public static AboutDialog get(CommandHandler handler) {
        if (instance == null) {
            instance = new AboutDialog();
            instance.addCommandHandler(handler);
        }
        return instance;
    }

    /**
     * Constructs an About dialog window.
     */
    public AboutDialog() {
        super("About", true);
        addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                hide();
            }
        });
        VerticalPanel content = new VerticalPanel();
        content.setStylePrimaryName("gdbe-About");
        Image logo = Icons.editorIcons.LogoLarge().createImage();
        content.setHorizontalAlignment(VerticalPanel.ALIGN_CENTER);
        content.add(logo);
        content.setSize("500px", "100px");
        HTML l1 = new HTML("© 2010 GDBE Project (1.3). Licensed under the Apache License, Version 2.0.");
        l1.setStylePrimaryName("gdbe-About-Caption");
        content.add(l1);
        setContentWidget(content);
    }
}