Collapse All and Expand All functionality in Tree

Question

Hi All,
I am using TreeByNestingTableColumn element to display the tree hierarchy .
Does anyone knows how to implement Collapse All and Expand All functionality for this tree (if someone have sample code for these functionality then it will be great for me) ?
Thanks in advance.
Ravi.

Answer 1

Hello Ravindra Sahu,
Code for EXPAND ALL button:
*step 1:Access node
  lo_nd_tree_hierarchy = wd_context->get_child_node( name = wd_this->wdctx_tree_hierarchy ).
*step2: Extract all the table entries from node which is binded to table
lo_nd_tree_hierarchy->get_static_attributes_table(
    IMPORTING
      table = lt_tree_hierarchy ).
*step3:set element attribute Expanded to abap_true
    loop at lt_tree_hierarchy ASSIGNING <ls_tree_hierarchy>.
      <ls_tree_hierarchy>-expanded = abap_true.
    endloop.
*step4: Finally the updated data needs to be binded.
  lo_nd_tree_hierarchy->bind_table( lt_tree_hierarchy ).
Code for COLLAPSE ALL button:
*step 1:Access node
  lo_nd_tree_hierarchy = wd_context->get_child_node( name = wd_this->wdctx_tree_hierarchy ).
*step2: Extract all the table entries from node which is binded to table
lo_nd_tree_hierarchy->get_static_attributes_table(
    IMPORTING
      table = lt_tree_hierarchy ).
*step3:set element attribute Expanded to abap_true
    loop at lt_tree_hierarchy ASSIGNING <ls_tree_hierarchy>.
      <ls_tree_hierarchy>-expanded = abap_false.
    endloop.
*step4: Finally the updated data needs to be binded.
  lo_nd_tree_hierarchy->bind_table( lt_tree_hierarchy ).
Please don't forget giving REWARD points...:-)
Edited by: Bharath Komarapalem on Jul 11, 2008 9:17 AM