uibinder

问题 I have a simple UiBinder widget containing a TextArea: <!DOCTYPE ui:UiBinder SYSTEM "http://dl.google.com/gwt/DTD/xhtml.ent"> <ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder" xmlns:g="urn:import:com.google.gwt.user.client.ui"> <g:TextArea visibleLines="3" /> </ui:UiBinder> I want to control the background color of this textarea for writeable and read only states. GWT uses the "-readonly" style name decorator to achieve this. So I try this: <!DOCTYPE ui:UiBinder SYSTEM "http://dl.google