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Select first node in tree? [message #466070]

Fri, 30 December 2005 19:14

Messages: 8
Registered: July 2009

Junior Member

What is the quickest way to select the first node in a tree?

Should a lookup be done on text or can it be done differently..

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Re: Select first node in tree? [message #466072 is a reply to message #466070]

Fri, 30 December 2005 19:36

Messages: 8
Registered: July 2009

Junior Member

Hmm had to look better. This is my own solution. If it can be done better
let me know.

private void selectFirstRootItem() {
TreeItem[] sel = new TreeItem[1];
if (tree.getItemCount() > 0) {
sel[0] = tree.getItems()[0];
tree.setSelection(sel);
tree.showSelection();
}
}

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Re: Select first node in tree? [message #466110 is a reply to message #466072]

Mon, 02 January 2006 15:11

Daniel Spiewak

Messages: 263
Registered: July 2009

Senior Member

That's the solution that I've been using. I don't that there's a more elegant way of doing it (not that our way is terribly ugly, but you know what I mean).

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Re: Select first node in tree? [message #466146 is a reply to message #466072]

Tue, 03 January 2006 19:39

Veronika Irvine

Messages: 1272
Registered: July 2009

Senior Member

if (tree.getItemCount() > 0) {
tree.setSelection(new TreeItem[]{tree.getItem(0)});
}

Note: tree.showSelection(); is not neccessary as this is part of
setSelection()
Getting one item at an index is much more effecient than getting all the
items.

"mp" <pijnmar@home.nl> wrote in message
news:ab29dad5d574d5c974e7e7104a57ce24$1@www.eclipse.org...
> Hmm had to look better. This is my own solution. If it can be done better
> let me know.
>
> private void selectFirstRootItem() {
> TreeItem[] sel = new TreeItem[1];
> if (tree.getItemCount() > 0) {
> sel[0] = tree.getItems()[0];
> tree.setSelection(sel);
> tree.showSelection();
> } }
>

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Re: Select first node in tree? [message #466171 is a reply to message #466146]

Wed, 04 January 2006 13:34

Messages: 8
Registered: July 2009

Junior Member

thank you!

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Re: Select first node in tree? [message #466199 is a reply to message #466146]

Wed, 04 January 2006 19:18

Daniel Spiewak

Messages: 263
Registered: July 2009

Senior Member

<i>Getting one item at an index is much more effecient than getting all the items.</i>

<<slaps forehead>> Darn, I should have thought of that. :-) Thanks for the pointer.

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