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TreeViewer with TableLayout [message #539549]

Fri, 11 June 2010 09:20

Ricky Ru

Messages: 14
Registered: February 2010

Junior Member

Hi friends,

I created a TreeViewer with TableLayout. The business model just has 2 level hierarchy. And I do not display the root element. So, you just can see the second-level items and their leaves. Each element has attributes like name, path, label and so on which are displayed in the table cell. My new requirement is to add a delete icon for each second-level, putting it in the last place(or column if it is) . Then if user click I will remove this element and its children.

But I am not familiar with the UI part. I just know adding an icon is easy(getColumnImage() in the LabelProvider). But I do not know how to listener the user clicking event. Any suggestion is welcome and appreciated.

Thanks,
Ricky

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Re: TreeViewer with TableLayout [message #539927 is a reply to message #539549]

Mon, 14 June 2010 09:20

Madhu Samuel

Messages: 199
Registered: July 2009

Senior Member

On 11-06-2010 14:50, Ricky Ru wrote:
> Hi friends,
>
> I created a TreeViewer with TableLayout. The business model just has 2
> level hierarchy. And I do not display the root element. So, you just can
> see the second-level items and their leaves. Each element has attributes
> like name, path, label and so on which are displayed in the table cell.
> My new requirement is to add a delete icon for each second-level,
> putting it in the last place(or column if it is) . Then if user click I
> will remove this element and its children.
>
> But I am not familiar with the UI part. I just know adding an icon is
> easy(getColumnImage() in the LabelProvider). But I do not know how to
> listener the user clicking event. Any suggestion is welcome and
> appreciated.
>
> Thanks,
> Ricky

You can track user clicks by adding a mouse listener to the tree viewer.
"treeViewer.getTree().addMouseListener(...)"

A better UI design will be provide the delete option inside a context
menu (rather than as an icon). Give the user the option to delete even
using the 'DEL' key. You can track selection changes using
"treeViewer.getTree().addSelectionListener(...)"

Regards,
Madhu
http://eclipsebible.com

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