Field to make uneditable only for the current/selected row

Question

I have a web dynpro application and I  wanted to make some fields uneditable and for this I have done the following:
I bound a context attribute to the readOnly property of all the fields you want to control. Then in the onEnter event of the main field, I set the value of this bound context attribute to ABAP_TRUE to change the state of the corresponding UI elements.
I have written the following in the onenter event of the main field:
DATA lo_el_context TYPE REF TO if_wd_context_element.
   DATA ls_context TYPE wd_this->element_context.
   DATA lv_editable TYPE wd_this->element_context-editable.
*  get element via lead selection
   lo_el_context = wd_context->get_element( ).
*  @TODO handle not set lead selection
   IF lo_el_context IS INITIAL.
   ENDIF.
*  @TODO fill attribute
*  lv_editable = 1.
*  set single attribute
   lo_el_context->set_attribute(
     name =  `EDITABLE`
     value = 'ABAP_TRUE' ).
Now the issue is that when I hit enter on the main field all other fields gray out/uneditable for all the rows, what I want is the other fields should be greyed out only for the row where I am entering the main field and hit enter.
Can you please tell me how can I do that?
Thanks,
Rajat

Answer 1

Hi Raj,
You are not getting it. When you have only one context attribute and bind that to all the rows/columns of the table then everything will be enabled or disabled.
In your case, create a local node with cardinality 1:1 inside the node you already have.
Write a supply a function for this node.
Add a attribute read_only of type wdy_boolean.
bind this attribute to the read_only property of the table columns.
in the supply function based on the element conditions you might have enable this attribute of disable.
supply function method already has the necessary code , you only need to enable the commented lines and put your if ..end if  code around it.
See a example.
* General Notes
* =============
* A common scenario for a supply method is to aquire key
* informations from the parameter <parent_element> and then
* to invoke a data provider.
* A free navigation thru the context, especially to nodes on
* the same or deeper hierachical level is strongly discouraged,
* because such a strategy may easily lead to unresolvable
* situations!!
*  if necessary, get static attributes of parent element
  DATA ls_parent_attributes TYPE wd_this->element_sflight.
  parent_element->get_static_attributes(
    IMPORTING
      static_attributes = ls_parent_attributes ).
** data declaration
  DATA ls_prop TYPE wd_this->element_prop.
** @TODO compute values
** e.g. call a data providing FuBa
  IF ls_parent_attributes-carrid <> 'LH'  .
    ls_prop-read_only = abap_true.
  ELSE.
    ls_prop-read_only = abap_false.
  ENDIF.
** bind a single element
  node->bind_structure(
    new_item             =  ls_prop
    set_initial_elements = abap_true ).