code: @UiHandler("m_projectSelector")
      protected void onProjectChange(ValueChangeEvent<String> event) {
  
          if (m_initialized) {
              m_publishDialog.setProjectId(new CmsUUID(event.getValue()));
              m_publishDialog.setProjectChanged();
              m_publishDialog.updateResourceList();
          }
      }
docs: Handling the value change event for the project selector.<p>
  
  @param event the change event
  
  @see com.google.gwt.event.logical.shared.ValueChangeHandler#onValueChange(ValueChangeEvent)