Purpose :
To trigger/handle events from messages in CRM Web-UI.
Explanation :
In CRM Web-UI, we can enable messages to appear as links, on the click of which a custom event can be triggered. Eg: On the click of a particular message , you can change status of a transaction or navigate to another page etc.
Steps :
1. In the view controller's class in tcode : BSP_WD_CMPWB, add an interface : IF_BSP_WD_MESSAGE_HANDLER ( This interface is responsible for handling message events ).
2. We need to subscribe the message's handler class, this can be done in any method in the controller class : I prefer , DO_INIT_CONTEXT.
DATA : lr_msg TYPE REF TO cl_bsp_wd_message_service.
lr_msg ?= cl_bsp_wd_message_service=>get_instance( ).
"Subscribe message for handling with the controller class
lr_msg->subscribe_message(
EXPORTING
iv_message_class = 'ZCRM_MESSAGES' " Messages, Message Class
iv_message_number = '006' " Messages, Message Number
iv_subscriber = me " Interface for Error Handler
).
CATCH cx_bsp_wd_dupl_mess_subscr. " Error: Double Registration for a Message
ENDTRY.
3. In the controller class ( IMPL's ) method : IF_BSP_WD_MESSAGE_HANDLER~HANDLE_MESSAGE , you can handle the message events like this :
method IF_BSP_WD_MESSAGE_HANDLER~HANDLE_MESSAGE.
if is_message-id = 'ZCRM_MESSAGE' and is_message-number = '006'.
"logic to handle event
endif.
endmethod.