Expand/Collapse Tree

[lucdep]

Hello,

Is there a method to expand/collapse a tree structure or part of a tree structure (eg down the selected node)?

Thanks for your help.

Luc Depuydt

[Support@SIB]

Do you have a self-joined tree?

You could use, e.g:

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Object oSearch = rowSearch.getValue("PROGRAM");

DataBookUtil.searchAndSelectRow(rdbMenu,
                                new Equals("PROGRAM", oSearch).or(
                                    new Equals("PROGRAMNUMBER", oSearch)))
 

[lucdep]

Hi,

Yes, I have a self joined table and filling the tree goes fine.
My problem is when I populate the tree component, the data tree is completely collapsed to the root. I would like to have a button with which the user can expand or open the tree completely to the last child, instead of having to click all the nodes one by one now. I know Windows tree object have such a method that can be invoked, but it is not clear if Swing/Vaadin components support this as well.

[lucdep]

Hi,

I would like to come back to this unsolved question. Does the Tree object have Expand and Collapse methods that can be used from within the code?

It seems that expandig/collapsing a tree in VisionX/JVx is only implemented for clicking physically with the mouse on a node, but I need expanding/collapsing from within the code. As far as I can see the Vaadin and Swing objects do have the methods. How can I use them?

Regards,,

Luc

[rjahn]

The UI concept is documented very well: Resource and UI Resource.

This should explain how you can use the technology dependent object. But be careful to keep the technology independence!