Using the isbranch () method to determine if a tree item is a branch or leaf

The following example shows how you can use Isbranch () Method to determine if a specific node in a tree control is a branch (folder) or leaf (item ). <? XML version = "1.0" encoding = "UTF-8" ?>
<! -- Http://blog.flexexamples.com/2007/11/30/using-the-isbranch-method-to-determine-if-a-tree-item-is-a-branch-or-leaf/ -->
< MX: Application Xmlns: MX = "Http://www.adobe.com/2006/mxml"
Layout = "Vertical"
Verticalalign = "Middle"
Backgroundcolor = "White" >

mx: script >

Import MX. Events. listevent;

Private function tree_itemclick (EVT: listevent): void {
VaR itemisbranch: Boolean = tree. datadescriptor. isbranch (tree. selecteditem );
LBL. Text = itemisbranch. tostring ();
}

Private function tree_labelfunc (item: XML): String {
VaR returnstr: String = item. @ label;
VaR itemisbranch: Boolean = tree. datadescriptor. isbranch (item );
If (itemisbranch ){
Returnstr + = "(Branch )";
}
Return returnstr;
}
]>
</ MX: script >

< MX: XML ID = "Xmldp" >
< Node >
< Node Label = "1.a"   />
< Node Label = "1. B"   />
< Node Label = "1.c" >
< Node Label = "1. c. I"   />
< Node Label = "1. C. II"   />
< Node Label = "1. C. III"   />
< Node Label = "1. C. IV"   />
< Node Label = "1. C. V"   />
</ Node >
< Node Label = "1.d"   />
< Node Label = "1.e" >
< Node Label = "1. e. I"   />
< Node Label = "1. E. II"   />
< Node Label = "1. E. III" >
< Node Label = "1. E. III."   />
</ Node >
< Node Label = "1. E. IV"   />
</ Node >
< Node Label = "1.f"   />
</ Node >
</ MX: XML >

< MX: applicationcontrolbar Dock = "True" >
< MX: Form Stylename = "Plain" >
< MX: formitem Label = "Isbranch ():" >
< MX: Label ID = "LBL" Fontweight = "Bold"   />
</ MX: formitem >
</ MX: Form >
</ MX: applicationcontrolbar >

< MX: Tree ID = "Tree"
Dataprovider = "{Xmldp }"
Labelfunction = "Tree_labelfunc"
Showroot = "False"
Width = "50%"
Rowcount = "6"
Itemclick = "Tree_itemclick (event );"   />

</MX: Application>