Screenreader not reading tooltips on FormItems

Hi,

I recently discovered that tooltips I added to FormItems are not read by screenreaders. After looking at the generated HTML for these FormItems I didn't see that aria-states for reading these tooltips are set. I would recommend the aria-state "aria-describedby" referencing the tooltip element like described in

https://www.w3.org/WAI/GL/wiki/ARIA1:_Using_the_aria-describedby_property_to_provide_a_descriptive_label_for_user_interface_controls#Example_4:_Using_aria-describedby_associate_tooltips_with_form_fields

or the way you handle tooltips on buttons. On Buttons you use the tooltip text for the aria-label.

Here the details:
SmartGWT Version: 5.0p_2015-02-/PowerEdition
Browser: Firefox 26

ScreenreaderMode ist enabled!!!

Test Case:

Code:

public class TooltipTest implements EntryPoint {



        private static final String VERSION = Version.getVersion() + "_" + DateUtil.format(Version.getBuildDate(), "yyyy-MM-dd");



        private ComboBoxItem slTitle = new ComboBoxItem("siTitle", "Title");

        private TextItem tfFirstName = new TextItem("tfFirstName", "First Name");

        private TextItem tfLastName = new TextItem("tfLastName", "Last Name");

        private IButton btnSave = new IButton("Save");



        public void onModuleLoad() {

                SC.setScreenReaderMode(true);



                Label labelTitle = new Label("<h1>Tooltip Test</h1>");

                Label labelVersion = new Label("SmartGWT Version: " + VERSION);

                Layout form = createForm();



                final VLayout layout = new VLayout();

                layout.addMembers(labelTitle, labelVersion, form);

                layout.draw();

        }



        private Layout createForm() {

                slTitle.setAllowEmptyValue(true);

                slTitle.setValueMap("Mr.", "Mrs.", "Dr."); 



                slTitle.setTooltip("Choose a title.");

                tfFirstName.setTooltip("Enter your first name.");

                tfLastName.setTooltip("Enter your last name.");

                btnSave.setTooltip("Your data will be saved.");



                btnSave.addClickHandler(createClickHandler());



                final DynamicForm form = new DynamicForm();

                form.setItems(slTitle, tfFirstName, tfLastName);



                final VLayout layout = new VLayout();

                layout.addMembers(form, btnSave);

                return layout;

        }



        private ClickHandler createClickHandler() {

                ClickHandler handler = new ClickHandler() {

                        public void onClick(ClickEvent event) {

                                SC.say("Your data has been successfully saved.", new BooleanCallback() {



                                        @Override

                                        public void execute(Boolean value) {

                                                slTitle.clearValue();

                                                tfFirstName.clearValue();

                                                tfLastName.clearValue();

                                        }



                                });

                        }

                };

                return handler;

        }



}