Hi Thomas, thanks for your explanation. I had that setElement(rootPanel.getElement()) thing in my mind, but I didn't really got what it does until your explanation. Now it makes much sense to me what happened.
Cheers, Marco Am Mittwoch, 28. November 2012 14:45:51 UTC+1 schrieb Thomas Broyer: > > > > On Wednesday, November 28, 2012 1:40:18 PM UTC+1, marco wrote: >> >> Ok I fixed it, with the following changes >> >> -public class ValidatableTextarea extends ComplexPanel >> +public class ValidatableTextarea extends FlowPanel >> - private FlowPanel rootPanel; >> protected TextArea input; >> private Label errorLabel; >> >> @UiConstructor >> public ValidatableTextarea() { >> input = new TextArea(); >> - rootPanel = new FlowPanel(); >> - rootPanel.add(input); >> + add(input) >> >> - setElement(rootPanel.getElement()); >> } >> ... >> public void setText(String text) { >> input.setText(String Text); >> } >> ... >> public void addKeyUpHandler(KeyUpHandler keyUpHandler) { >> input.addKeyUpHandler(keyUpHandler); >> } >> >> Don't know why but it's working now. >> > > I know why: setElement() is only meant to be used when you create your own > Widget, not when you extend an existing one. The root of your problem was > actually using rootPanel;getElement() as the element for another widget, > yet adding widgets to rootPanel (which is never *attached* to the DOM: > its element is "physically" attached, by way of the ValidatableTextArea, > but the FlowPanel itself is not "logically" attached. > > Now, instead of *extending* FlowPanel, you should extend Composite > instead, and use a FlowPanel with setWidget (more or less reverting to your > previous code, fixing it: ComplexPanel→Composite, setElement→setWidget) > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/vlSS2xPuS5AJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.