[news.eclipse.platform.swt] Re: Autocomplete Combo

[Daniel Spiewak <djspiewak@xxxxxxxxxx>]

I have no idea how to force your combo to 'popup', however, I can tell you about your StackOverflowError.  You're calling the Combo#setItems(String[]) method within the body of your ModifyListener.  The ModifyListener is called whenever the Combo is modified, even adding new items.  When you set or add or remove the items, the listener is called, and the whole process repeats.  You'll have to manually ensure some kind of checking to prevent this (i.e. check a condition prior to executing your event handling code and thus calling the Combo#setItems(String[]) method).

IMHO, you should go the way of the auto-assist in JDT.  I.E. create an SWT.NO_TRIM | SWT.ON_TOP Shell with a Table as it's only widget (use FillLayout and only add the Table).  You can do a lot with a Table.  Then you can popup and pop-down your Shell with the proper items whenever you need an auto complete.  Good luck.

Daniel

J Aaron Farr wrote:

Hello.

Does anyone have a code snippet for an autocomplete combo?  I've tried a couple of methods and haven't been able to get it right.  I seem to have two issues:

1. If I try to do "combo.setItems()" in the body of my ModifyListener, I get a java.lang.StackOverflowError, so I can only use the combo.add() or combo.remove() methods but even then...

2. I want to be able to display the popup list as the user types into the combo's text field.  However, the popup remains hidden while typing.  Is there a way to force it to "popup"?

I'm looking for something like Google Suggest's [1] text box. Ultimately I want to subclass CellEditor and add this feature to a ComboBoxCellEditor.

Thanks,

jaaron

[1] http://www.google.com/webhp?complete=1&hl=en