ABAP Code Sample for Data Browser Using ALV Grid

Transcription

1 ABAP Code Sample for Data Browser Using ALV Grid Applies To: ABAP Summary : Here is a code sample that performs the operation similar to Data Browser. This adopts the simplest way to display any table from Data Dictionary and the data of any table can be edited right from ALV Grid itself. Some of the concepts that can be learnt from this code samples are a. Creating ALV grid (for Displaying as well as editing Data). b. Generating Field Catalog Automatically. c. Creating Dynamic internal Table. d. Moving buttons to the ALV tool-bar & Creating Event-Handlers. By: Immanuel Daniel, Wipro Technologies Date: 24 Jan Program *& Report ZIALV_EDIT_SIMPLE1 * * Description : ALV to perform Displaying and Editing Tables * Technical Contact : Immanuel Daniel * Technical Spec. Number: ZIALV_EDIT_SIMPLE1 * Created on : 24/01/04 report zialv_edit_simple1. include <icon>. * Definition of Grid event-handler class class lcl_grid_event_receiver definition. public section. methods: toolbar for event toolbar of cl_gui_alv_grid importing e_object 1

2 e_interactive,user_command. " Period for event user_command of cl_gui_alv_grid importing e_ucomm endclass. * * *mplementation of Grid event-handler class * * class lcl_grid_event_receiver implementation. * * Method for handling all creation/modification calls to the toolbar * method toolbar. data : ls_toolbar type stb_button. * * * Define Custom Button in the toolbar * * clear ls_toolbar. move 0 to ls_toolbar-butn_type. move 'EDIT' to ls_toolbar-function. move space to ls_toolbar-disabled. move 'EDIT' to ls_toolbar-text. move icon_change_text to ls_toolbar-icon. move 'Click2Edit' to ls_toolbar-quickinfo. append ls_toolbar to e_object->mt_toolbar. clear ls_toolbar. move 0 to ls_toolbar-butn_type. move 'UPDA' to ls_toolbar-function. move space to ls_toolbar-disabled. move 'UPDATE' to ls_toolbar-text. move icon_system_save to ls_toolbar-icon. move 'Click2Update' to ls_toolbar-quickinfo. append ls_toolbar to e_object->mt_toolbar. clear ls_toolbar. move 0 to ls_toolbar-butn_type. move 'EXIT' to ls_toolbar-function. move space to ls_toolbar-disabled. move 'EXIT' to ls_toolbar-text. move icon_system_end to ls_toolbar-icon. move 'Click2Exit' to ls_toolbar-quickinfo. append ls_toolbar to e_object->mt_toolbar. endmethod. * Method to handle user commands from toolbar 2

3 method user_command. case e_ucomm. when 'EDIT'. perform set_input. when 'UPDA'. perform refresh_disp. perform update_table. when 'EXIT'. leave program. endcase. endmethod. endclass. * * * Declarations * * parameters: p_intab type dfies-tabname default 'SAPLANE'. data : dref type ref to data, it_grid_fcat type lvc_t_fcat, struct_grid_lset type lvc_s_layo, tab_info like table of dfies. field-symbols : <fs_tab> like line of tab_info, **** Output Structure**** <it_disptab> type table. data : ok_code like sy-ucomm,save_ok like sy-ucomm * Container Object [grid_container],grid_container type ref to cl_gui_custom_container * Control Object [grid],grid type ref to cl_gui_alv_grid * Event-Handler Object [grid_handler] 3

4 ,grid_handler type ref to lcl_grid_event_receiver. " period * Begin of process logic start-of-selection. call screen '0100'. *& Module STATUS_0100 OUTPUT * PBO module...displays the Grid module status_0100 output. * * * A L V G R I D * * if grid_container is initial. create object grid_container container_name = 'CCONTAINER1'. create object grid i_appl_events = 'X' i_parent = grid_container. create object grid_handler. set handler: grid_handler->user_command for grid, grid_handler->toolbar for grid. *Assigning the input value to <fs_tab>-tabname assign p_intab to <fs_tab>-tabname. call function 'LVC_FIELDCATALOG_MERGE' i_structure_name = <fs_tab>-tabname changing ct_fieldcat = it_grid_fcat. *Creating internal table call method cl_alv_table_create=>create_dynamic_table it_fieldcatalog importing ep_table = it_grid_fcat = dref. 4

5 assign dref->* to <it_disptab>. perform populate_grid_data. call method grid->set_ready_for_input i_ready_for_input = 0. *Enabling the grid to edit mode, *setting table name as title of the grid struct_grid_lset-edit = 'X'. "To enable editing in ALV struct_grid_lset-grid_title = p_intab. call method grid->set_table_for_first_display is_layout = struct_grid_lset changing it_outtab = <it_disptab> it_fieldcatalog = it_grid_fcat. " Period endif. endmodule. *& Module USER_COMMAND_0100 INPUT module user_command_0100 input. ****User Commands are handled as events in method user_command. endmodule. " USER_COMMAND_0100 INPUT *& Form EXIT_PROGRAM form exit_program. call method grid_container->free. call method cl_gui_cfw=>flush. leave program. endform. " EXIT_PROGRAM *& Form populate_grid_data form populate_grid_data. select * from (p_intab) into corresponding fields of table <it_disptab>. 5

6 endform. " populate_grid_data * FORM refresh_disp * form refresh_disp. call method grid->refresh_table_display. endform. * FORM update_table * form update_table. modify (p_intab) from table <it_disptab>. call method grid->set_ready_for_input i_ready_for_input = 0. endform. * FORM set_input * form set_input. call method grid->set_ready_for_input i_ready_for_input = 1. endform. Screen Logic : process before output. module status_0100. process after input. module user_command_0100. Screen No : 100 The screen consists of just a custom control of name CCONTAINER1 6

7 Screen Shots Enter the name of the table that has to be displayed in ALV grid Output Display of table (here vbka) 7

8 Edit Button By Clicking this button,the grid switches to input mode. This uses set_ready_for_input method. Update Button The changes made to data are saved by clicking UPDATE button. Disclaimer & Liability Notice This document may discuss sample coding, which does not include official interfaces and therefore is not supported. Changes made based on this information are not supported and can be overwritten during an upgrade. SAP will not be held liable for any damages caused by using or misusing of the code and methods suggested here, and anyone using these methods, is doing it under his/her own responsibility. SAP offers no guarantees and assumes no responsibility or liability of any type with respect to the content of the technical article, including any liability resulting from incompatibility between the content of the technical article and the materials and services offered by SAP. You agree that you will not hold SAP responsible or liable with respect to the content of the Technical Article or seek to do so. Copyright 2004 SAP AG, Inc. All Rights Reserved. SAP, mysap, mysap.com, xapps, xapp, and other SAP products and services mentioned herein as well as their respective logos are trademarks or registered trademarks of SAP AG in Germany and in several other countries all over the world. All other product, service names, trademarks and registered trademarks mentioned are the trademarks of their respective owners. 8