RF4 tree/treenode select a specific node

[jonask]

Hi,

how can i select a specific node from the bean?

Im having a tree and a "search-field" where i can search a node of the tree by its name and stuff.

The search-method sets currentSelection (Type: TreeNode) to the best match.

How can i now tell the tree to select this node?

[jonask]

anyone an idea?

[lfryc]

Hi Jonas,

you could design backing bean which will contain:

private Collection<? extends Serializable> selection; // + getters / setters

and then point your tree to this collection by selection="#{backingBean.selection}".

Regards,

- Lukas

[jonask]

thanks for the answer. i pointed my tree to the selection, like you suggested.

How can i now access my nodes? are they in the collection? type TreeNode?

[nbelaevski]

Hi Jonas,

No, this collection contains model keys of nodes.

[jonask]

so what to do with it?

I'm still stuck at this...

I managed to access my tree via RichFunction:

UIComponent component = org.richfaces.function.RichFunction.findComponent("tree");
UITree tree = (UITree)component;

But i still dont know, how to tell him which node to select...

[ilya_shaikovsky]

you should not deal with the component itself. you should get the model used and get the rowKey for the node which should be selected than add that rowKey to the collection. If will not be able to solve please show the model code.

[jonask]

just solved it!

i created a new rowkey

newKey = new SequenceRowKey(new Integer(0));

and then set it in a collection to the tree

Collection<Object> map = new HashSet<Object>();

map.add(newKey);

tree.setSelection(map);

works good is this the right way?

[jonask]

I came to the point where i have to go through the whole tree. (at BeanSide)

how can i iterate through it or is it even possible??

i want to first go as deep as possible and then part by part...

Thanks!

[nbelaevski]

Jonas,

To iterate through teh whole tree you can use walk(...) method.