Tutorials and Documentation on Tree UI Element for ABAP

Question

Hi Everyone,
I am having trouble finding documentation or tutorials on creating Tree structures in web dynpro for ABAP.
Basically, I need some tutorials on using the "Tree" UI Element.  Also, how would I go about adding Check Boxes to such a control?  For example, someone would like to select the lowest item in a Tree using a check box.
Tank you.
Christiaan.

Answer 1

Hi
>a) How to check or how to write the code to check whether the current selected node is first level or second level or third level etc from the above example tree structure
In the context node you have to have attribute level (integer). When you populate context nodes for the tree you have to set correct value 0, 1, 2, ... for the attribute. Then it'll be easy for you to read the value and understand what is the level.
>b) How to insert a node only at the first level , second level and third level i etc from the above example
It slightly depends on whether you use recursive nodes or not. But in general it's simple - just create a new element in the corresponding node
>c) How to delete only leaf node . i have a requirement which says that i can delete only leaf nodes , if i delete a node which having children then it should not allow to me. i can delete a node which is not having any child
IWDNode node;
if (node.getChild("<child node name>").size() <= 0) {
// leaf node
>4) How to rename any node, once user selects any node then on click of any button then popup opens which retrieves the current textvalue of a node and user have an inputfield where he enters then on click of save then that new textvalue needs to be updated to the selected tree element
Just bind the text property of a tree item to some node attribute (let say NAME). The just update a value of the attribute.
BR, Siarhei