AbstractTreeTableColumn Events

Use

onLoadChildren

This event is triggered when a tree node is expanded for the first time.

Parameter Name	Type	Description
ID	STRING	Standard Parameter
CONTEXT_ELEMENT	IF_WD_CONTEXT_ELEMENT	Standard Parameter
PATH	STRING	Context path of the related node

onToggle

This event is called if a node is expanded or collapsed in the (hierarchical) table column.

Parameter Name	Type	Description
ID	STRING	Standard Parameter
CONTEXT_ELEMENT	IF_WD_CONTEXT_ELEMENT	Standard Parameter
EXPANDED	WDY_BOOLEAN	New status of node: abap_true = expanded abap_false = collapsed
PATH	STRING	Context path of the related node

Restrictions

You are not permitted to use onToggle and onLoadChildren at the same time.
If you bind Table.OnLeadSelection and AbstractTreeTableColumn.OnToggle at the same time, it can result in two actions in one roundtrip: If a child of a node is the lead selection and this node is collapsed, the lead selection jumps from the child to the node. If you want to bind both events, set the Application Parameter WDALLOWMULTIPLEACTIONS = X.

Example

You can find a test example in the system in component WDR_TEST_TABLE under the link Selection on tab Table+TreeByNesting or TableTreeByKey . There in the dropdown list at the bottom you can activate which tree event you want to have.