FileDocCategorySizeDatePackage
Mail.javaAPI DocExample4621Mon Aug 27 20:12:46 BST 2007com.google.gwt.sample.mail.client

Mail

public class Mail extends Object implements com.google.gwt.core.client.EntryPoint, com.google.gwt.user.client.WindowResizeListener
This application demonstrates how to construct a relatively complex user interface, similar to many common email readers. It has no back-end, populating its components with hard-coded data.

Fields Summary
private static Mail
singleton
private static final Images
images
Instantiate an application-level image bundle. This object will provide programmatic access to all the images needed by widgets.
private TopPanel
topPanel
private com.google.gwt.user.client.ui.VerticalPanel
rightPanel
private MailList
mailList
private MailDetail
mailDetail
private Shortcuts
shortcuts
Constructors Summary
Methods Summary
public voiddisplayItem(MailItem item)
Displays the specified item.

param
item


            
      
    mailDetail.setItem(item);
public static com.google.gwt.sample.mail.client.Mailget()
Gets the singleton Mail instance.


                      
        
  

          
      
    return singleton;
public voidonModuleLoad()
This method constructs the application user interface by instantiating controls and hooking up event listeners.

    singleton = this;

    topPanel.setWidth("100%");

    // MailList uses Mail.get() in its constructor, so initialize it after
    // 'singleton'.
    mailList = new MailList();
    mailList.setWidth("100%");

    // Create the right panel, containing the email list & details.
    rightPanel.add(mailList);
    rightPanel.add(mailDetail);
    mailList.setWidth("100%");
    mailDetail.setWidth("100%");

    // Create a dock panel that will contain the menu bar at the top,
    // the shortcuts to the left, and the mail list & details taking the rest.
    DockPanel outer = new DockPanel();
    outer.add(topPanel, DockPanel.NORTH);
    outer.add(shortcuts, DockPanel.WEST);
    outer.add(rightPanel, DockPanel.CENTER);
    outer.setWidth("100%");

    outer.setSpacing(4);
    outer.setCellWidth(rightPanel, "100%");

    // Hook the window resize event, so that we can adjust the UI.
    Window.addWindowResizeListener(this);

    // Get rid of scrollbars, and clear out the window's built-in margin,
    // because we want to take advantage of the entire client area.
    Window.enableScrolling(false);
    Window.setMargin("0px");

    // Finally, add the outer panel to the RootPanel, so that it will be
    // displayed.
    RootPanel.get().add(outer);

    // Call the window resized handler to get the initial sizes setup. Doing
    // this in a deferred command causes it to occur after all widgets' sizes
    // have been computed by the browser.
    DeferredCommand.addCommand(new Command() {
      public void execute() {
        onWindowResized(Window.getClientWidth(), Window.getClientHeight());
      }
    });

    onWindowResized(Window.getClientWidth(), Window.getClientHeight());
public voidonWindowResized(int width, int height)

    // Adjust the shortcut panel and detail area to take up the available room
    // in the window.
    int shortcutHeight = height - shortcuts.getAbsoluteTop() - 8;
    if (shortcutHeight < 1) {
      shortcutHeight = 1;
    }
    shortcuts.setHeight("" + shortcutHeight);

    // Give the mail detail widget a chance to resize itself as well.
    mailDetail.adjustSize(width, height);