How to mapped Gray out field in web dynpro for ABAP.

Question

Hi,
While preparing a WD Application i m using a RFC,which has one input parameter as MODE.
IF MODE = 'DIS' (DIS stands for Display) then all fields of layout in web dynpro should be gray out.
and
IF MODE = 'MOD' (MOD stands for Modification) then all fields of layout in web dynpro should be opened of entering the data.
Can anyone help me to solved this scenario.
Regards,
<b>Seema</b>

Answer 1

Hi Seema
I had the same issue a while ago.  I ended up with an assistance class with  set/get read only methods.  I then used the following type code to set the read only property in the WDDOMODIFYVIEW:
DATA: lr_start_date TYPE REF TO cl_wd_input_field,
        lr_end_date TYPE REF TO cl_wd_input_field,
        lr_pernr TYPE REF TO cl_wd_input_field,
        lv_read_only TYPE abap_bool.
lr_start_date ?= view->get_element( 'INP_START_DATE' ).
  lr_end_date ?= view->get_element( 'INP_END_DATE' ).
  lr_pernr ?= view->get_element( 'INP_PERSON' ).
lv_read_only = wd_assist->get_read_only( ).
  IF lv_read_only = abap_true.
    lr_end_date->set_read_only( abap_true ).
    lr_start_date->set_read_only( abap_true ).
    lr_pernr->set_read_only( abap_true ).
  ELSE.
    lr_end_date->set_read_only( abap_false ).
    lr_start_date->set_read_only( abap_false ).
    lr_pernr->set_read_only( abap_false ).
  ENDIF.
All my business logic is within my assistance class so it makes it easier to maintain. 
Regards
Ian