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Author: J.Jayanthi

Description:

This document describes how to use
toolbar
user command
in ALV using OOPS method.

This document describes the how to use the events for toolbar and user command in OOPS ALV.

Procedure
Step 1: Create object for event. Data o_event type ref to lcl_event_receiver.
Since the normal practice is to define declarations, we need to mention that lcl_event_receiver class is defined somewhere in the program. So before writing the declaration of o_event, this statement should be written.
CLASS lcl_event_receiver DEFINITION DEFERRED.
Data o_event type ref to lcl_event_receiver.
In PBO, create the object for event.
* Create the event reciever
CREATE OBJECT o_event.
Step 2: Define the class for events toolbar and user_command. Go to tcode SE24 and check the parameters tab for the events toolbar and user_command of class cl_gui_alv_grid.
CLASS lcl_event_receiver DEFINITION.
* event receiver definitions for ALV actions
PUBLIC SECTION.
METHODS:
* Tool bar
handle_toolbar
FOR EVENT toolbar OF cl_gui_alv_grid
IMPORTING e_object
e_interactive,
* Status bar
handle_user_command
FOR EVENT user_command OF cl_gui_alv_grid
IMPORTING e_ucomm.
ENDCLASS.
Step 3: Write the implementation part for the defined method.
CLASS lcl_event_receiver IMPLEMENTATION.
* create the relevant buttons on the toolbars
METHOD handle_toolbar.
* This method handles the user interaction with the tool bar.
perform toolbar.
APPEND w_toolbar TO e_object->mt_toolbar.
ENDMETHOD.
METHOD handle_user_command.
* In event handler method for event USER_COMMAND: Query your
* function codes defined in step 2 and react accordingly.
perform user_command using e_ucomm.
ENDMETHOD.
ENDCLASS.
For a button to appear in the toolbar, we need to pass the function code and other details as below.
form toolbar.
CLEAR w_toolbar.
MOVE : 'COUNT' TO w_toolbar-function,"Function code
'' TO w_toolbar-icon,"Name of an Icon
'' TO w_toolbar-quickinfo,"Quickinfo for an icon
'' TO w_toolbar-butn_type,"Toolbar button type
'' TO w_toolbar-disabled,"Disabled
'COUNT' TO w_toolbar-text."Text
endform. " toolbar
This user command event is handled in a such a way that once the user selects the required records and then presses the new button COUNT, the user_command will be triggered to find out the no. of rows selected.
form user_command using p_e_ucomm.
DATA :li_rows TYPE STANDARD TABLE OF lvc_s_row,
"Internal table for getting selected rows
lv_ln TYPE i."No. of rows selected
CALL METHOD o_grid->get_selected_rows
IMPORTING
et_index_rows = li_rows.
CASE p_e_ucomm.
WHEN 'COUNT'.
DESCRIBE TABLE li_rows LINES lv_ln.
MESSAGE s001(zalv) WITH 'No. of rows selected' lv_ln.
ENDCASE.
endform. " user_command
Step 4: These events should be handled in PBO.
* Handling Events
SET HANDLER o_event->handle_toolbar FOR o_grid.
SET HANDLER o_event->handle_user_command FOR o_grid.

Complete Code
Screen 9000, GUI Status ZSTATUS and GUI Title ZTITLE should be created and in Flow logic of the screen, PBO and PAI should be uncommented.