FPM : OVERRIDE_EVENT_GAF method of Component Controller

Question

Hello All
I am not able catch the button evenet value in OVERRIDE_EVENT_GAF method of Component Controller.
What i have done is
1) Created FPM Application with Road Map 4 Mainsteps.
2) In the First Road Map contains view,  having two buttons. On click of buttons need to hide MainStpes
Example : On Click of Button1 need to show Step1 Step2 and Step3 means Step4 is hiding
          On Click of Button2 need to show Step1 Step3 and Step4 means Step2 is hiding
3)For the above requirement In the View created two actions for two buttons. In Button1 action written below code.
Code for Button1 Action in the View
data: lo_fpm type ref to if_fpm,*lr_event type ref to cl_fpm_event.
create event
lr_event = cl_fpm_event=>create_by_id(
cl_fpm_event=>gc_event_change_step ).
lo_fpm = cl_fpm_factory=>get_instance( ).
lr_event->mo_event_data->set_value(
iv_key = 'B1'
iv_value = 'BUTTON1').
4)  onclick of Button 1 when i m trying to get the value of B1 it is coming empty in the OVERRIDE_EVENT_GAF method of Component Controller. Expecting "BUTTON1"  written below code
Code for OVERRIDEEVENT_GAF method of Component Controller_
DATA: lo_fpm TYPE REF TO if_fpm,
lr_event TYPE REF TO cl_fpm_event.
get reference to FPM API
lo_fpm = cl_fpm_factory=>get_instance( ).
create event
lr_event = cl_fpm_event=>create_by_id(cl_fpm_event=>gc_event_change_step ).
lr_event->mo_event_data->get_value(iv_key = 'B1' ).
5) Based on condition planning to hide the steps.
IF BUTTON1
Hide Step4
IF  BUTTON2
Hide Step2
Please help how to get value in OVERRIDE_EVENT_GAF method of Component Controller onAction of Button
Edited by: CarlinWilliams on Jun 17, 2011 1:56 PM
Edited by: CarlinWilliams on Jun 17, 2011 1:57 PM

Answer 1

Hi Carlin,
You need to ensure that you raise the event:
e.g. here I raise an event to pass some data from an org chart:
lo_event =
     cl_fpm_event=>create_by_id( zpa_os_org_struc_flex_n_assist=>c_island_nav_up_requested ).
  lo_event->mo_event_data->set_value(
           iv_key = zpa_os_org_struc_flex_n_assist=>c_node_selected_for_nav
           iv_value = ls_nav_node ).
  wd_this->ao_fpm->raise_event( lo_event ).
Then you need to read the event. In the OVERRIDE_EVENT_GAF method you can read the event by referring to
io_gaf->mo_event
e.g.
io_gaf->mo_event_data->get_value( exporting iv_key = zpa_os_org_struc_flex_n_assist=>c_node_selected_for_nav
                                          importing ev_value = ls_node_detail  ).
let me know if you need any other help/explanation,
Cheers,
Chris