Important tree question

Question

hi all
please when i navigate in tree by mouse i want to get the node value and assign it to an item in the form( i get it by use when-tree-node-selected )
ftree.get_tree_node_property and get the value use system.trigger_node
but the question is :-
i want to get the node value when i navigate on tree nodes by keyboard not by mouse
which trigger i use and which code
if i use key-up, key-down triggers how can i specify the current node
urgent please
thanks

Answer 1

Hi!
You can use the same, the when-tree-node-selected trigger.
While the trigger fires, you can get via the :SYSTEM.TRIGGER_NODE_SELECTED variable,
if the fireing node either is selected or not because the trigger fires two times.
Onetime for deselect the left node and again for select the actual node.
You can use the following code to test the when-tree-node-selected trigger.
It fires on mouseclick and on keyboard navigation:
declare
htree item := find_item ( 'block.tree' );
begin
if
  :SYSTEM.TRIGGER_NODE_SELECTED = 'TRUE'
then
  clear_message;
  message ( ftree.get_tree_node_property ( htree, to_number ( :system.trigger_node ), ftree.node_value ) );
end if;
end;Regards