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How select an item in a Table ? [message #461731]

Wed, 28 September 2005 16:11

Eclipse User

I want the first element to be selected in a viewer.

I tried:

public void createPartControl(Composite parent) {

fViewer = new TableViewer(parent, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL);

....

final Table table = fViewer.getTable();

int selectionCount = table.getSelectionCount();

if(selectionCount==0) {

table.setSelection(0);

}

Nothing happens: any item is selected in my view.

How can I do this?

Nicolas.

Re: How select an item in a Table ? [message #461733 is a reply to message #461731]

Wed, 28 September 2005 17:07

Eclipse User

Originally posted by: sunil_kamath.nohotspammail.com

"Nicolas Silb" <NiSJunk@DigitalAirways.com> wrote in message
news:dhetcc$8b0$1@news.eclipse.org...
>I want the first element to be selected in a viewer.
>
> I tried:
>
> public void createPartControl(Composite parent) {
>
> fViewer = new TableViewer(parent, SWT.SINGLE | SWT.H_SCROLL |
> SWT.V_SCROLL);
>
> ...
>
> final Table table = fViewer.getTable();
>
> int selectionCount = table.getSelectionCount();
>
> if(selectionCount==0) {
>
> table.setSelection(0);
>
> }
>
>
fViewer.setSelection(new StructuredSelection(obj));

where obj is the first element in your viewer input.
---
Sunil

Re: How select an item in a Table ? [message #461735 is a reply to message #461733]

Wed, 28 September 2005 18:14

Eclipse User

Where should i put this? if i put it after creating the viewer, there are no
content yet and it fails;

I tried:

public void createPartControl(Composite parent) {

fViewer = new TableViewer(parent, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL);

fViewer.setContentProvider(new ViewContentProvider());

fViewer.setLabelProvider(new ViewLabelProvider());

fViewer.setSorter(new ViewerSorter());

addSelectionChangedListener(Repository.getInstance());

ISelection selection = new
StructuredSelection(fViewer.getTable().getItem(0));

fViewer.setSelection(selection, true);

"Sunil Kamath" <sunil_kamath@nohotspammail.com> a

Re: How select an item in a Table ? [message #461737 is a reply to message #461735]

Thu, 29 September 2005 00:19

Eclipse User

Originally posted by: sunil_kamath.nohotspammail.com

"Nicolas Silb" <NiSJunk@DigitalAirways.com> wrote in message
news:dhf4k8$ho5$1@news.eclipse.org...
> Where should i put this? if i put it after creating the viewer, there are
> no content yet and it fails;
>

Obviously. If there is no content, there is no way to select an item.

> I tried:
>
> public void createPartControl(Composite parent) {
>
> fViewer = new TableViewer(parent, SWT.SINGLE | SWT.H_SCROLL |
> SWT.V_SCROLL);
>
> fViewer.setContentProvider(new ViewContentProvider());
>
> fViewer.setLabelProvider(new ViewLabelProvider());
>
> fViewer.setSorter(new ViewerSorter());
>
>
> addSelectionChangedListener(Repository.getInstance());
>

At which point are you calling fViewer.setInput()?

>
> ISelection selection = new
> StructuredSelection(fViewer.getTable().getItem(0));
>
> fViewer.setSelection(selection, true);
>

This won't work. It expects the contents of the StructuredSelection to be an
element from your model- not the table item itself.
What is the input for your TableViewer?
---
Sunil

Re: How select an item in a Table ? [message #461748 is a reply to message #461737]

Thu, 29 September 2005 05:58

Eclipse User

GOT IT!

The trick is to do it AFTER setting the setInput (thanks for your "At which
point are you calling fViewer.setInput()?" question)

Here is the working code:

public void createPartControl(Composite parent) {

fViewer = new TableViewer(parent, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL);

fViewer.setContentProvider(new ViewContentProvider());

fViewer.setLabelProvider(new ViewLabelProvider());

fViewer.setSorter(new ViewerSorter());

fViewer.setInput(this/*dummy*/);

Object item = fViewer.getElementAt(0);

ISelection selection = new StructuredSelection(item);

fViewer.setSelection(selection, true);

merci +++

Nicolas.

"Sunil Kamath" <sunil_kamath@nohotspammail.com> a

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