Events in ALV reports

There are total 17 events available for ALV reporting, by using this events we can display report headers, report footers, user command, pf status etc.

We use REUSE_ALV_EVENTS_GET function module to get events and use in our report.

Steps for implementing events.

STEP1: Call the function module REUSE_ALV_EVENTS_GET and get all the events into a Internal Table (I_EVENTS).

STEP2: For each EVENT we need to provide a Sub-Routine name. So Read the EVENT from Internal Table into WorkArea and provide the Sub-Routine name.

STEP3: Finally , define the Sub-Routine and write logic.

Event definition Syntax.

*Get events using function module
CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
* EXPORTING
* I_LIST_TYPE = 0
IMPORTING
ET_EVENTS = I_EVENTS .
*add perform name to a event
READ TABLE I_EVENTS INTO WA_EVENTS WITH KEY NAME = SLIS_EV_USER_COMMAND .
WA_EVENTS-FORM = 'abc' .
MODIFY I_EVENTS FROM WA_EVENTS INDEX SY-TABIX . 
* = name of the event 
* is perform name to implement for particular event

Event implementation in perform

FORM abc.

** Add functionality for event
ENDFORM.

All of the events can be found under type group SLIS.
* Events
SLIS_EV_ITEM_DATA_EXPAND        TYPE SLIS_FORMNAME VALUE 'ITEM_DATA_EXPAND',
SLIS_EV_REPREP_SEL_MODIFY       TYPE SLIS_FORMNAME VALUE 'REPREP_SEL_MODIFY', SLIS_EV_CALLER_EXIT_AT_START TYPE SLIS_FORMNAME VALUE 'CALLER_EXIT',
SLIS_EV_USER_COMMAND              TYPE SLIS_FORMNAME VALUE 'USER_COMMAND',
SLIS_EV_TOP_OF_PAGE                   TYPE SLIS_FORMNAME VALUE 'TOP_OF_PAGE',
SLIS_EV_DATA_CHANGED                TYPE SLIS_FORMNAME VALUE 'DATA_CHANGED',
SLIS_EV_TOP_OF_COVERPAGE        TYPE SLIS_FORMNAME VALUE 'TOP_OF_COVERPAGE',
SLIS_EV_END_OF_COVERPAGE        TYPE SLIS_FORMNAME VALUE 'END_OF_COVERPAGE',
SLIS_EV_FOREIGN_TOP_OF_PAGE   TYPE SLIS_FORMNAME
VALUE 'FOREIGN_TOP_OF_PAGE', SLIS_EV_FOREIGN_END_OF_PAGE TYPE SLIS_FORMNAME
VALUE 'FOREIGN_END_OF_PAGE',
SLIS_EV_PF_STATUS_SET                  TYPE SLIS_FORMNAME VALUE 'PF_STATUS_SET',
SLIS_EV_LIST_MODIFY                     TYPE SLIS_FORMNAME VALUE 'LIST_MODIFY',
SLIS_EV_TOP_OF_LIST                      TYPE SLIS_FORMNAME VALUE 'TOP_OF_LIST',
SLIS_EV_END_OF_PAGE                     TYPE SLIS_FORMNAME VALUE 'END_OF_PAGE',
SLIS_EV_END_OF_LIST                      TYPE SLIS_FORMNAME VALUE 'END_OF_LIST',
SLIS_EV_AFTER_LINE_OUTPUT         TYPE SLIS_FORMNAME VALUE 'AFTER_LINE_OUTPUT', SLIS_EV_BEFORE_LINE_OUTPUT     TYPE SLIS_FORMNAME VALUE 'BEFORE_LINE_OUTPUT',
SLIS_EV_SUBTOTAL_TEXT                TYPE SLIS_FORMNAME VALUE 'SUBTOTAL_TEXT'.