看看GWT 2.0 新的界面设计 ( 通过配置 xml 进行设计.) UiBinder

@UiField TopPanel topPanel;
@UiField MailList mailList;
@UiField MailDetail mailDetail;
@UiField Shortcuts shortcuts;

<ui:UiBinder
xmlns:ui='urn:ui:com.google.gwt.uibinder'
xmlns:g='urn:import:com.google.gwt.user.client.ui'
xmlns:mail='urn:import:com.google.gwt.sample.mail.client'>

<g:DockLayoutPanel unit='EM'>
<g:north size='5'>
<mail:TopPanel ui:field='topPanel' />
</g:north>

<g:center>
<g:SplitLayoutPanel>
<g:west size='192'>
<mail:Shortcuts ui:field='shortcuts' />
</g:west>

<g:north size='200'>
<mail:MailList ui:field='mailList' />
</g:north>

<g:center>
<mail:MailDetail ui:field='mailDetail' />
</g:center>
</g:SplitLayoutPanel>
</g:center>
</g:DockLayoutPanel>

</ui:UiBinder>