How to stop the standard navigation to view from NavBar?

Question

Hi Folks,
My solution is in CRM IC 5.0. My application is a Z one. I have a custom button in the "Followupdetails" view
Initially the "Identify Customer(BupaDetail)" view loads up as soon as we log onto IC. Navigation to any other view selected from the nav bar should only be possible if my custom button is clicked. Otherwise the navigation should not happen and it should continue to remain in the same window and throw an error message.I capture the value of whether this custom button is clicked in the attribute GV_CLEAN_WASTE.
I wrote the below code in "DO_CLEANUP_CONTEXT" of the BupaDetail view.
IF ZL_CRM_IC_BREADCRUMBSVIEW_IMPL=>GV_CLEAN_WASTE <> 'C'.
   IF me->view_manager IS BOUND.
      lr_message = view_manager->get_message_service( ).
      lr_message->add_message(
          iv_msg_type       = if_genil_message_container=>mt_error
          iv_msg_id         = 'ZCRM_WW'
          iv_msg_number     = '012' ).
  endif.
ENDIF.
The above code throws error message but the navigation to the view selected in NavBar still happens.I want to block that.
How can i acheive it?
Thanks
Abishek

Answer 1

Hi ,
You need to write the below logic in the event handler of the custom button.
IF ZL_CRM_IC_BREADCRUMBSVIEW_IMPL=>GV_CLEAN_WASTE 'C'.
IF me->view_manager IS BOUND.
lr_message = view_manager->get_message_service( ).
lr_message->add_message(
iv_msg_type = if_genil_message_container=>mt_error
iv_msg_id = 'ZCRM_WW'
iv_msg_number = '012' ).
endif.
return.
ENDIF.