[news.eclipse.platform.swt] Re: How to do a tree search?

[x_naren@xxxxxxxxxxx (Naren)]

Hi Dhiresh,

I do a similar, I select items with no children in a tree. this is
how i do it. here is the algorithm. I will send you an example tommorrow.

basically, I recursively go through each item in tree and if does not have 
any children then I add the item to an arraylist and at the end 
setselection
on the tree with the arraylist. I hope this helps.

ArrayList items;
for each toplevelitem in tree
treeitem[] childitems = toplevelitem.getitems();
for each childitem in childitems
  treeitems[] subitems = childitem
  if subitems.length > 0 // has children
   do recursive
  else
    items.add(treeitem)
 end for childitems

end for toplevelitem

tree.setSelection(items.coverttoarray)

Dhiresh Patel wrote:

> Anybody? How to search treeModel and once you find the object, how do 
> you set selection?

> dhiresh wrote:
> > I am using a treeviewer to display a tree.
> >
> > I have attached a keylistener to the tree.  I want to search tree
> > base on keystrokes. I am able to capture keystrokes on tree- but I don't 
> > know
> >
> > how to proceed with search on the tree -  When I search the tree from 
> > beginning and then expand items to get children it takes up plenty of 
> > time - Also there is flicker on the the screen as I am expanding 
> > treeItem to get to their children.
> >
> > When I search the treeModel that was used as an input and find the 
> > object, I am not able to set tree selection
> > e.g.          Object[] oArr = new Object[1];
> >         oArr[0] = obj3;  // obj3 is object found from treemodal search
> >            
> >         TreePath tp = new TreePath(oArr);
> >         TreePath[] pArr = new TreePath[1];
> >         pArr[0] = tp;
> >         tv.setExpandedTreePaths(pArr); // tv = treeViewer
> >         TreeSelection ts = new TreeSelection(tp);
> >         tv.setSelection(ts, true); 
> > I would appreciate if anybody can help me with this problem or tree 
> > search in eclipse.
> >
> > Thanks
> >
> > Dhiresh