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TreeViewer and TabFolder [message #464359]

Mon, 21 November 2005 22:05

Eclipse User

Hi,

My TreeViewer works fine on my Composite (parent), but I want it to appear
within a TabItem. But TabItem isn't a Composite, so I created a second
Composite to hold the viewer. The TabFolder looks fine, but there's no
Tree.

Here's my code:

TabFolder folder = new TabFolder(parent, SWT.BOTTOM);
TabItem projectTab = new TabItem(folder, SWT.NONE, 0);
Composite projectComp = new Composite(folder, SWT.NONE);
TreeViewer treeViewer = new TreeViewer(projectComp);
...
projectTab.setControl(projectComp);
projectTab.setText("Project");

Any thoughts? Thanks.

Matt

Re: TreeViewer and TabFolder [message #464361 is a reply to message #464359]

Mon, 21 November 2005 23:19

Eclipse User

you have to use setControl for the tab's contents. For you I think there
are two ways of doing this, just putting in the tree, or making a function
for the composite (if you want more on the tab than the tree). The first
way of doing this would be something like:

TabFolder folder = new TabFolder(parent, SWT.BOTTOM);
TabItem projectTab = new TabItem(folder, SWT.NONE, 0);
projectTab.setControl(new TreeViewer(projectComp));

Note that this will only allow for the tree to be on the tab. If you
wanted more stuff on the tab you can still use a composite, and just pass
the composite to setControl like this:

TabFolder folder = new TabFolder(parent, SWT.BOTTOM);
TabItem projectTab = new TabItem(folder, SWT.NONE, 0);

// set up your composite here
Composite projectComp = new Composite(folder, SWT.NONE);
TreeViewer treeViewer = new TreeViewer(projectComp);
.....
// and anything else you want

// now pass the composite to setControl
projectTab.setControl(projectComp);

I think this is what you're looking for, but someone feel free to correct
me if I am wrong.

Aaron

Re: TreeViewer and TabFolder [message #464364 is a reply to message #464361]

Tue, 22 November 2005 00:53

Eclipse User

Aaron,

Thanks for the response! You're quite right about the importance of
setControl(), but there's a large difference between a Tree and a
TreeViewer.

setControl(new TreeViewer()) won't work because TreeViewers aren't
controls. But you can use:

treeName = new Tree(...);
new TreeViewer(treeName);
tabItem.setControl(treeName);

I'd forgotten that TreeViewers can be initialized with Trees as well as
with Composites. Your helpful reply jogged my memory, so I couldn't have
done it without you.

Thanks again.

Matt

Re: TreeViewer and TabFolder [message #464380 is a reply to message #464364]

Tue, 22 November 2005 08:54

Eclipse User

You can always use TreeViewer.getControl() to get the Tree widget from the
TreeViewer regardless of how it was created. You do not need to create the
TreeViewer with a Tree.

e.g. :

TreeViewer tv = new TreeViewer(tabFolder);
TabItem item = new TabItem(tabFolder, SWT.NONE);
item.setControl(tv.getControl);

"Matt" <mattscar@yahoo.com> wrote in message
news:099cf4aa4f3b71004797b1cbf5b74cdf$1@www.eclipse.org...
> Aaron,
>
> Thanks for the response! You're quite right about the importance of
> setControl(), but there's a large difference between a Tree and a
> TreeViewer.
> setControl(new TreeViewer()) won't work because TreeViewers aren't
> controls. But you can use:
> treeName = new Tree(...);
> new TreeViewer(treeName);
> tabItem.setControl(treeName);
>
> I'd forgotten that TreeViewers can be initialized with Trees as well as
> with Composites. Your helpful reply jogged my memory, so I couldn't have
> done it without you.
>
> Thanks again.
>
> Matt
>
>
>
>
>

Re: TreeViewer and TabFolder [message #464399 is a reply to message #464380]

Tue, 22 November 2005 16:37

Eclipse User

Matt...glad I could help a little...I've just started with SWT and haven't
used trees so I missed that part. Good to hear you got it though.

Aaron

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