Dynamically update a tree

Hello world

I need to get refreshed tree nodes based on certain criteria. The criteria will be based on a combobox or a PopupMenuButton change event. To achieve the same thing, I use a tree control, which is filled by an XMLListCollection. The XMLListcollection has a filterFunction function that filters the nodes of tree that will be displayed. The criteria for the function filterFunction depends on a selection of ComboBox.

The filterFunction for the XMLListCollection function is called during the Combo change event, but the tree data is not refreshed and doesnot show the filtered result desired.
I tried to do this for a collection with a datagrid's arraycollection, and it works fine but doesnot work for a tree. How we can update the data in the tree. Here's the snippet used to run the filter of the tree that is works do not and do not throw any error as well.

"" < mx:Application xmlns:mx = ' http://www.adobe.com/2006/mxml '
Layout = "vertical" creationComplete = "SetFilter (); »
creationPolicy = "all" >
< mx:Script >
<! [CDATA]
Import mx.controls.Alert;
import flash.events.Event;

private void SetFilter (): void {}
xlc.filterFunction = treeFilter;
}

private void treeFilter(item:Object):Boolean {}
var blResult:Boolean = false;
var csProject:String = [email protected] ();
mx.controls.Alert.show (csProject + ".." + cmbTree.selectedLabel.toString ());
If (csProject.IndexOf (cmbTree.selectedLabel.ToString ())! = - 1) {}
blResult = true;
}
Return blResult;
}
[]] >
< / mx:Script >
< mx:XML id = "xmldata" source="data/treedata.xml"/ >
< mx:XMLListCollection id = "xlc.
source = "{XMLDATA. Node}"such FilterFunction ="treeFilter"/ >

< mx:Tree id = "trTest" dataProvider = "{xlc}.
labelField="@label' showRoot ="false">
< / mx:Tree >
< mx:ComboBox id = "cmbTree" change = "xlc.refresh ()" >
< mx:ArrayCollection >
< mx:Object label = "by owner, project" data = "Holder, the project" / >
< mx:Object label = "Type of file by the licensee, project," data = "Type of file by the licensee, project," / >
< mx:Object label = "by the holder, Date" data = "Holder, Date" / >
< mx:Object label = "by the licensee, Date, project" data = "by the licensee, Date, project" / >
< / mx:ArrayCollection >
< / mx:ComboBox >
< / mx:Application >

TreeData.XML file has the following characteristics that is displayed as nodes of the tree.
< root >
< node label = "Holder, the project" >
< node label = 'Abc' >
< node label = "Mugs" / >
< node label = "Test" / >
< / node >
< / node >
< node label = "Type of file by the licensee, project," >
< node label = "Abc123" >
< node label = "Mugs1" / >
< node label = "Test1" / >
< / node >
< / node >
< node label = 'Holder, Date' >
< node label = "Abc456" >
< node label = "Mugs2" / >
< node label = "Test2" / >
< / node >
< / node >
< node label = "per the licensee, Date, project" >
< node label = "Abc567" >
< node label = "Mugs3" / >
< node label = "Test3" / >
< / node >
< / node >
< / root >

Please advise and suggest on where I'm wrong or if there is another way better to perform the desired result.

Thank you.

Kind regards
Paromita

Trees do not currently support filtering or sorting. We are implementing for the next version.

Thank you
Belinda
Flex SDK QA

Tags: Flex

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