Comments on: How to filter all nodes of a Flex Tree component

By: Gerardo

Gerardo — Thu, 03 Nov 2011 23:18:53 +0000

Thanks a lot for this post. It took me a while to find a solution for my problem.

By: Suneel

Suneel — Tue, 30 Aug 2011 09:35:52 +0000

There is bug , when u filter with keyword that is not there in a xml, it goes blank , please suggest a solution

By: Arthur

Arthur — Thu, 21 Jul 2011 22:59:00 +0000

I am developing a similar example and had a problem with scrollbar’s parent container. When I expand the tree, it creates the verticalscroll, but if I filter the tree to have a few nodes to disappear scrollbar, the scrollbar remains the same size, and if I scrolling, happens some issue in the layout tree ..

I tried to call invalidateDisplayList in parent’s container but it did not fixed the problem.

any suggestions?

Thanks

By: Eric

Eric — Fri, 11 Feb 2011 01:09:21 +0000

hi,

i have implemented the tree filtering without any problems, but i am having difficult time getting rid of first level node.

for example if u tick off Red and Green –> the Yellow node would disappear instead of changing to a different Icon.

thanks.

By: jac

jac — Sun, 13 Jun 2010 09:02:21 +0000

i have a question.

If i have several childrens, how could i filter that? because, now only the first children level is filtered.
My tree has 3 levels of hierarchy, and i need filter the 3rd level. (node 3)
node 1 -
node 2 –
node 3.

Anu idea? Thanks in adevance

By: David Arno

David Arno — Tue, 11 May 2010 11:28:25 +0000

@Yoav,

Not sure about that. I’ll have to investigate and get back to you in a couple of days.

By: Yoav

Yoav — Tue, 11 May 2010 07:30:41 +0000

One thing bothers me about the solution: each time getChildren is triggered, a new XMLCollection is created. Isn’t this a memory issue? Aren’t we creating here a memory leak?
In such cases I prefer to cache the resulted array or something like that. Any simpler idea?

By: Gaurav

Gaurav — Thu, 06 May 2010 04:51:08 +0000

Thanks for the example. Helped me save time and energy researching filtering tree nodes.

For those who need to enable drag behaviour, just need to implement

public function getData(node:Object, model:Object=null):Object { return node; }

By: Flex Tree - Utiliser une filterFunction en récursif sur des noeuds XML - Adobe Flex Tutorial - Tutoriaux Flex Builder, MXML, ActionScript, AS3

Sun, 28 Jun 2009 22:02:57 +0000

[...] data. Il avait été prévu de le corriger pour un éventuel Flex 3.4 puis il a été retiré. Certains ont donc trouvé de bonne solutions pour contourner ce problème, voici son [...]

By: Alex

Alex — Sun, 28 Jun 2009 09:53:20 +0000

Thanks for the idea.

I made a child from DefaultDataDescriptor with two overwritten functions:

override public function getChildren(node:Object, model:Object = null):ICollectionView {
if (filter == null)
return super.getChildren(node, model);
return filter(node);
}

override public function isBranch(node:Object, model:Object = null):Boolean {
return getChildren(node, model).length > 0 ;
}

It fixes appearing of the open triangles by parents of the filtered nodes

P.s.: It’s only for XML, of course.