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TreeViewer with only one TreeViewerColumn [message #731675]

Sun, 02 October 2011 12:13

sielver Mising name

Messages: 42
Registered: September 2011

Member

Hello,

So I have a TreeViewer and I want to add editing support to it.

I used to use the setCellEditors/setCellModifier methods directly on my TreeViewer instance but I noticed the setEditingSupport was the new, preferred way of doing this (and it seems more handy):

// In my TreeViewer constructor
TreeViewerColumn column = new TreeViewerColumn(this, SWT.NONE);
column.setEditingSupport(new EditingSupport(this));
column.setLabelProvider(new LabelProvider());
column.getColumn().setText("Column 1");
column.getColumn().setWidth(???); // Here's the question

So I have to specify a witdh for the column to be visible. Is there an easy way to have it take the full size of the tree all the time? I heard about adding some listeners and calling pack() on the TreeColumn but I'm not sure how to do that, and I wonder if there's anything handier.

Any idea?

Thanks,

-Jérémy

[Updated on: Sun, 02 October 2011 12:13]

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Re: TreeViewer with only one TreeViewerColumn [message #731680 is a reply to message #731675]

Sun, 02 October 2011 12:52

sielver Mising name

Messages: 42
Registered: September 2011

Member

OK, answering myself as I found the solution:

ViewerColumn column = new ViewerColumn(this, getTree()) {};
column.setLabelProvider(labelProvider);
column.setEditingSupport(new EditingSupport(this));

Basically, using a ViewerColumn instance directly doesn't create a TreeColumn behind, i.e. no need to specify a size or whatever.

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Re: TreeViewer with only one TreeViewerColumn [message #731843 is a reply to message #731680]

Mon, 03 October 2011 09:29

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Though this works it this is not how we intended to use ViewerColumn, i
think we simply missed ColumnViewer#setEditingSupport(). So please file
a bugzilla to request this API.

Tom

Am 02.10.11 14:52, schrieb sielver:
> OK, answering myself as I found the solution:
>
>
> ViewerColumn column = new ViewerColumn(this, getTree()) {};
> column.setLabelProvider(labelProvider);
> column.setEditingSupport(new EditingSupport(this));
>
>
> Basically, using a ViewerColumn instance directly doesn't create a
> TreeColumn behind, i.e. no need to specify a size or whatever.

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Re: TreeViewer with only one TreeViewerColumn [message #731919 is a reply to message #731843]

Mon, 03 October 2011 13:48

sielver Mising name

Messages: 42
Registered: September 2011

Member

Done:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=359708

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Re: TreeViewer with only one TreeViewerColumn [message #738495 is a reply to message #731919]

Sun, 16 October 2011 10:01

sielver Mising name

Messages: 42
Registered: September 2011

Member

Expanding on this:

Still using a simple one-column TreeViewer with no explicit TreeColumn, I would like the whole row's background to be painted when overriding the getBackground() method of my LabelProvider. Is there any easy way to achieve this?

Jérémy

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