Change search help for each line of a web dynpro table

Question

Hi all i have got the following code to dynamically change the search help of a single field on a web dynpro app and was just wondering if anyone could show me the code for implementing it onto a table so that the same field on each row has a different search help assigned to it!
CALL METHOD node_info->set_attribute_value_help
EXPORTING
name = 'DEPT'
value_help_mode = '121'
value_help = 'PREMN'.
Regards
Mart

Answer 1

Hi,
it is possible to have different search help for same table column for different context elements i.e. table lines. the way to acheive this is by using cell variants in table column.
Steps to follow:
1. In your table column insert cell variant. Depending upon number of variations for search help, insert that number of cell variants in table column
2. Enter the value of variant key property of each cell variant for ex. 01 for first cell variant and 02 for second cell variant
3. Insert cell editor for each of cell variant. for ex. if you have 2 different search helps for single column then insert two cell variant in table column and for each cell variant insert cell editor, let say input field in this case
4. Bind the value property of each input field to different context attribute of the node. for ex: you have table with two columns i.e. Dynamic and fldate
.  First column is Dynamic. It will have two cell variants and each cell variant have cell editor of type input field  i.e. depending upon the value of second column i.e. fldate, the search help of first column will be decided.
5.  Create context node from structure "SFLIGHT" and select 3 components from structure i.e. Carrid, connid, fldate. Add another context attribute to same context node i.e. selected_cell_variant of type string
6. Bind each of context attribute carrid and coonid to value property of cell editor i.e. input field of cell vairaints from column Dynamic
7. Bind value property of cell editor i.e. input field of fldate column to context attribute fldate
8.. Bind selectedCellVariant property of table column Dynamic to context attribute selected_cell_variant
9. Now, Write method at the wddoinit of view to fill up the context node from table sflight table
10.  Write event handler for event OnEnter of cell editor from table column FLDATE. in this event handler depnding upon the date set the value of context attribute "selected_cell_variant" to 01 or 02
DATA lv_date TYPE S_DATE.
  ASSERT CONDITION context_element IS NOT INITIAL. " context_element is default paramter for event handler
  context_element->get_attribute(
    EXPORTING
      name  = 'FLDATE'    " NAME
    IMPORTING
      value = lv_date    " DATA
  IF lv_date > '20101016'.
    context_element->set_attribute(
      EXPORTING
        value =  '01'   " Attribute Value
        name  = 'SELECTED_CELL_VARIANT'     " Web Dynpro: Name of Context Element
  ELSE.
    context_element->set_attribute(
      EXPORTING
        value =  '02'   " Attribute Value
        name  = 'SELECTED_CELL_VARIANT'     " Web Dynpro: Name of Context Element
  ENDIF.
11. Depending upon the value of selectedCellVariant the corresponding search help will show up in table column. So change the value of column fldate for each table row and see how search help gets changed.
Thanks,
Rahul
Edited by: Rahul Yadav on Oct 17, 2010 12:09 AM