Re: [ULC-developer] Using ULCLookupField as table cell editor

Mon, 30 Apr 2007 02:45:29 -0700

Title: Using ULCLookupField as table cell editor
Hi John,

In ULC, all cell renderers and editors need to implement the ICellComponent interface. The methods of this interface define the behavior of the component when used as a cell renderer or cell editor. But why you can use the ULCLookupTextField as editor without implementing this interface? This is because ULCLookupTextField already indirectly implements the ICellComponent interface because its superclass ULCTextField implements it. This also explains why you get a simple ULCTextField instead of a ULCLookupTextField as editor.

To use the ULCLookupTextField as editor you need to correctly implement the methods of the ICellComponent interface:
  • public void copyAttributes(ICellComponent source);
    Copy the relevant visual attributes from the source object to this object (= the template object).
  • public boolean areAttributesEqual(ICellComponent component);
    Check if the relevant visual attributes are equals between this object and the component object.
  • public int attributesHashCode();
    Calculate the hash code for the relevant visual attributes.

The following postings on the developer list might help you:

Regards Dany



Prince John, Bedag wrote:

Hi,

I am trying to use a ULCLookupTextField as an editor in a ULCTable, but without success. The lookup field works fine standalone, but inside the table I just get a text field. I have tried adding it as a parameter to a DefaultCellEditor:

mHeimatortTable.getColumnModel().getColumn(1).setCellEditor(
            new DefaultCellEditor(GUIUtils.createKonstanteDropDown(Nation.getEnumCollection(),
                getLocale(), true)));


And I tried writing a custom cell editor

public class PLZCellEditor
    extends DefaultCellEditor
{
    private static final long serialVersionUID = -5383602841474707283L;

    public PLZCellEditor(ULCLookupTextField editor)
    {
        super(editor);
    }

    @Override
    public IEditorComponent getTableCellEditorComponent(ULCTable table, Object value, int row)
    {
        return getEditorComponent();
    }
}

Neither works. Anyone have any ideas? (A ComboBox works fine in the same table)

With best wishes

John Prince


John Prince
Bedag Informatik AG
Software-Entwicklung
Gutenbergstrasse 1
3011 Bern
Telefon:        +41 (0)31 633 21 21 (direkt 633 22 25)
Fax:            +41 (0)31 633 25 55
E-Mail:         mailto:[EMAIL PROTECTED]
www.bedag.ch



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