Row Numbering in TableViewer [DATABINDING]

[raven]

Hi there,

How to provide a static line numbering (say 1st column) to a TableViewer.

Don't wanna add this information to the Domain object.

Any sorting on the other columns should not affect the sequence of the numbers in the first columns.

Thanks

[Eric Clayberg]

General questions about how to use various Eclipse widgets should be posted to the appropriate Eclipse newsgroup.

How to provide a static line numbering (say 1st column) to a TableViewer. Don't wanna add this information to the Domain object. Any sorting on the other columns should not affect the sequence of the numbers in the first columns.

Presumably, you would need to set up your TableViewer's LabelProvider to return row numbers (indexes into your sorted element collection) for the first column (columIndex == 0).

[raven]

Hi Eric,



What LabelProvider do you mean -ObservableMapLabelProvider?

My table has 2 Columns "Row" & "Data".

"Data" is filled via Databinding from the Domain Object ("name" property)

If I do as you suggested, the records from the Domain Object show up
either in "Row" column or, the running numbers are shown instead of the
data from the Domain object.

I really cannot see how I could show row numbers here, without having
the Domain object keeping that information - or can the TableViewer have
more than one input?

Snippet:


protected DataBindingContext initDataBindings() {
//
DataBindingContext bindingContext = new DataBindingContext();
//
//
ObservableListContentProvider tvFirstDataContentProviderList = new ObservableListContentProvider();
tvFirstData.setContentProvider(tvFirstDataContentProviderList);
//
IObservableMap[] tvFirstDataLabelProviderMaps = BeansObservables.observeMaps(tvFirstDataContentProviderList.getKnownElements(), Data.class, new String[]{"name"});
tvFirstData.setLabelProvider(new ObservableMapLabelProvider(tvFirstDataLabelProviderMaps));
//
IObservableList firstDataModelFirstDataObserveList = BeansObservables.observeList(Realm.getDefault(), firstDataModel, "firstData");
tvFirstData.setInput(firstDataModelFirstDataObserveList);
//
return bindingContext;


Br, raven

[Eric Clayberg]

What you are describing does not sound compatible with the Eclipse Data Binding API. If your table only had two columns and only one column comes from your data, I don't see much benefit to using DB either. A normal TableViewer with its own LabelProvidr and ContentProvider is probably the route you will need to take.

In any case, questions like this are better directed to the appropriate Eclipse newsgroup as I stated earlier.