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TreeViewer and TabFolder [message #464359]

Tue, 22 November 2005 03:05

Matt

Messages: 40
Registered: July 2009

Member

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

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

Tue, 22 November 2005 04:19

Aaron

Messages: 13
Registered: July 2009

Junior Member

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

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

Tue, 22 November 2005 05:53

Matt

Messages: 40
Registered: July 2009

Member

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

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

Tue, 22 November 2005 13:54

Veronika Irvine

Messages: 1272
Registered: July 2009

Senior Member

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
>
>
>
>
>

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