How to show a simple message / confirmation box in a SAP FPM application #SAP #ABAP #FPM

README.md

1. Choose a logically suitable GUIBB of your FPM application. This needs to be in the FPM event loop when you want to show the message box.
2. Pick or choose an event to trigger the message box, e.g. an event on a button.
3. Add and implement the …_EXT interface in the GUIBB’s feeder class, e.g. IF_FPM_GUIBB_FORM_EXT
4. In the NEEDS_CONFIRMATION method, filter for your event and create the EO_CONFIRMATION_REQUEST parameter object and pass in your desired message, title and button texts. The approve button will proceed the event processing, the reject button will stop it.

FPM_MessageBox.abap

  METHOD if_fpm_guibb_form_ext~needs_confirmation.

    CASE io_event->mv_event_id.

      WHEN io_event->gc_event_send. "filter the FPM event to show the message box for

        CREATE OBJECT eo_confirmation_request "the framework will render this as message box
          EXPORTING
            iv_window_title        = |Title for the message box window|
            it_confirmation_text   = VALUE #(
              ( |A string table with detail text to show in the window| )
              ( |Multiple lines supported in the message box window| )
            )
            iv_button_text_approve = |e.g. Save, will proceed the event processing|
            iv_button_text_reject  = |e.g. Cancel, will stop the event processing|.

    ENDCASE.

  ENDMETHOD.