Re: Error when defining a generic Composite widget using Java Generics

Hi Steve & Jens

Thanks for your input - I haven't yet had time to look at it, but your input is appreciated. 

I will leave a note here, as soon as I have had time to dig a little more into it...

BR

Steen

Den onsdag den 9. oktober 2013 16.12.46 UTC+2 skrev Steen Lillethorup Frederiksen:

I am trying to create a generic Composite widget, using Java Generics. However I keep getting the assertion error:

java.lang.AssertionError: This UIObject's element is not set; you may be missing a call to either Composite.initWidget() or UIObject.setElement()

I have defined my Composite widget as follows:

public class DataEntry<DataType extends FocusWidget> extends Composite {

    final protected FlowPanel panel;

    final protected InlineLabel promptLabel;

    final protected DataType inputElement;

    

    public DataEntry(final DataType inputField, final String guiId, final String prompt) {

        super();

        promptLabel = new InlineLabel(prompt);

        inputElement = inputField;

        panel = new FlowPanel();

        panel.add(promptLabel);

        panel.add(inputField);

        initWidget(panel);

        getElement().setId(guiId);

        promptLabel.setStylePrimaryName("dio-DataEntry-Prompt");

        inputElement.setStylePrimaryName("dio-DataEntry-Input");

    }

And I am defining my concrete Composite widgets as follows (could be TextBox, TextArea etc.):

public class ListEntry extends DataEntry<ListBox> {

    public ListEntry(String guiId, String prompt) {

        super(new ListBox(), guiId, prompt);

    }

    ...

}

Can anyone explain to me, what I have missed here?

Thanx

Steen

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