[wxPython-users] TreeCtrl GetNextVisible

[Saketh Bhamidipati]

On 9/1/06, Robin Dunn <robin at alldunn.com> wrote:
>
> Saketh Bhamidipati wrote:
> > A method of mine iterates through a TreeCtrl and writes data to an XML
> > file using ElementTree. In order to move the iterator forward, I use
> > GetNextVisible. When writing this method, I did not know that the node
> > actually has to be visible for GetNextVisible to return it. This is
> > causing problems for me now that I have many nodes in a TreeCtrl that
> > require a scrollbar.
> >
> > I still want to iterate through the TreeCtrl, but without the major
> > issue that all nodes must be visible for the iteration to work.
> >
>
> Use GetFirstChild/GetNextChild.
>
> --
> Robin Dunn
> Software Craftsman
> http://wxPython.org  Java give you jitters?  Relax with wxPython!
>
>
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>
> I got it to work with this code:
        while current.IsOk():
            new =3D None

            if current =3D=3D self.tree.GetRootItem():
                new =3D self.tree.GetFirstChild(current)

            else:
                new =3D self.tree.GetNextSibling(current)

            current =3D new
            if not current.IsOk(): break

            # Start translating the data
            new =3D SubElement(root, "node")
            new.set("title", unicode(self.tree.GetItemText
(current)).encode('utf8'))

            data =3D SubElement(new, "data")
            datatext =3D unicode(self.tree.GetPyData(current)).encode('utf8=
')
            if datatext =3D=3D 'None':
                        datatext =3D "" # Again, we don't want it to litera=
lly
write 'None'
            data.text =3D datatext

        tree =3D ElementTree(root)
        tree.write(unicode(filename))

But I have a problem - if the user minimizes the root node, nothing but the
root node gets written. How can I fix this?
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