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)
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