Display/Change toggle option in custom transaction

Question

Hi all,
I have created a custom transaction with 3 screens . Now the requirement is, I have to provide the user an option to toggle between Display/change mode. As per my idea, I have to identify all the fields to be toggled , assign them as a group in attributes and get it done using below code.
Loop at screen.
if screen-group1= 'XXX'.
screen-input = 0/1.
modify screen.
endif.
endloop.
But , in my case , I have table control and some other fiedls on my screens.
So, I have to use the above code twice in the PBO (once for all other fiedls and once for Table control fiedls).
And I have to repeat this process in each screen.
Is there any way to provide toggle option from display/change vice versa at complete transaction level in an easiest way?
Thanks

Answer 1

Other idea would be switching whole subscreens (I guess your custom program consists of them, right?). In these alternative screens you would need the same table controls with read only fields set by default. So you would switch from one to another back and forth.
If you need to stick to same approach you have, the easiest would be creating a routine which loops through screen and turns on/off each group/screen fields given as parameters. Then you just call it in several places you need.
Draft
form turn_on_off using i_input type i
                             i_fieldname type csequence
                             i_group type csequence.
   loop at screen.
      if screen-group1 = i_group.
          i_screen-input = i_input.
      endif.
      if screen-name = i_fieldname.
           i_screen-input = i_input.
      endif.
      modify screen.
   endloop.
endform.
"PBO first screen
perform turn_on_off using 0 space 'XXX'.
"PBO second screen
perform turn_on_off using 0 'FIELD1' space.
"PBO third screen
perform turn_on_off using 1 'FIELD2'  'XXX'.
As you see you can use different combination of group/field/input options.
Regards
Marcin