Input Field in ALV Grid

Question

Hi All,
I have a requirement to display one field in the ALV grid as input field,so that  the user can enter value in that field when the ALV is displayed.I need to use this entered user value later in th eprg for further processing.
My worry is that i do not see any parameter such as "INPUT " or "EDIT " in the field catalog structure lvc_s_fcat for the ALV.
How can i acheive having editable input field in the ALV grid?
Please suggest.
Thanks,
Swati

Answer 1

EDIT field in field catalog is there, you must have ommited it.
ls_fieldcat-edit = 'X'.   "set your desired column to be edited
Now you need to get entered value for further processing.
Define a class as a event receiver for data_changed or data_changed_finished events. Here is how to implement the latter method:
CLASS cl_alv_event_receiver DEFINITION.
  PUBLIC SECTION.
    METHODS:
      cell_changed FOR EVENT data_changed_finished OF cl_gui_alv_grid
                          IMPORTING e_modified et_good_cells.
ENDCLASS.
CLASS cl_alv_event_receiver IMPLEMENTATION.
   METHOD cell_changed.
      check e_modified = 'X'. "if content of cell was changed
       "here you check et_good_cells table, it will contain new values
       "it is of type lvc_t_modi
   ENDMETHOD.
ENDCLASS.
CREATE OBJECT cl_alv_event_receiver.
"now just indicate the handler for this event
SET HANDLER cl_avl_event_receiver->cell_changed FOR cl_gui_alv_grid.
Each time some action was perfomed on edit field, the method will be invoked and you can check inside what was changed and what is the new value.
Additionally after displaying your output table in alv, you need to register this event
"register edit events
      CALL METHOD W_ROGRID->register_edit_event
        EXPORTING
          i_event_id = cl_gui_alv_grid=>mc_evt_modified.
Now all you need is to update appropraite records to your internal table in your METHOD cell_changed.