CR10 Module Pool Day 1

7/30/2019 CR10 Module Pool Day 1

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Module Pool Programming

DAY 1


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2Copyright 2010 Deloitte Development LLC. All rights reserved.

Agenda - Day 1

Introduction

Why Module Pool?

Components of Module Pool Program

Screen Painter

Flow Logic and Events

Screen Painter - Layout

Basic Screen Design

Menu Painter


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Sample Screen or GUI


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Structure of Module Pool Program


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Structure of Module Pool Program


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Program Organization

SAP AG 2002



Create Program

Program SAPMZ##BC410_SOLUTION

With TOP Include

System Help

Object Navigator

Object name

SAPMZ##BC410_SOLUTION

Dictionary structures

FieldsPBO modulesPAI modulesSubroutines

ScreensGUI statusGUI titleTransactionsIncludes

MZ##BC410_SOLUTIONTOP

MZ##BC410_SOLUTIONO01

MZ##BC410_SOLUTIONI01MZ##BC410_SOLUTIONF01

MZ##BC410_SOLUTIONE01

Global declarations

Global declarations

PBO modules

PBO modules

PAI modules

PAI modules

Subroutines

Subroutines

Events

Events


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Creating a Transaction Code

Use SE93 to create a Tcode giving:1) Program name

2) 1st screen of transaction


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Using screen painter

SE41 Menu Painter SE51 Screen Painter

SE80 Object Navigator


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Events

The screen flow logic is built using events. There are four event blocks

1) PROCESS BEFORE OUTPUT : Triggered before current

screen is displayed. At end of PBO current screen is

displayed.

2) PROCESS AFTER INPUT: Triggered when user chooses

a function on screen. At end of PAI another screen is

called or PBO of current screen is triggered.


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Events

3) PROCESS ON HELP-REQUEST: User requests for fieldhelp (Presses F1 on a field)

4) PROCESS ON VALUE-REQUEST: User request for

value request (Presses F1 on a field)


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Basic Screen Design


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Screen Attributes

Program Name of ABAP program

Screen Number 4 digit number

Screen Type Normal, Modal Dialog, Subscreen

Size Screen SizeSequence Next Screen


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Basic Screen Elements

Text fields Display elements Input/output fields Used to enter data on screen

or display data from the ABAP program.

Checkboxes

Radio buttons

Pushbuttons Elements on screen that trigger PAI

event. Function codes are associated.

Box Visual grouping of related fields

OK_CODE Function code for a screen is placed

in this field


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Identical Names

SAP AG 2002

Data Exchange: Screens - ABAP Programs

IDENTICAL NAMESIDENTICAL NAMES

Time

PBOMODULE trans_to_100

PAIMODULE trans_from_100

After PBOAfter PBO

TABLES: sdyn_conn.

CARRID CONNIDLH 0400

Program work area

TABLES: sdyn_conn.

CARRID CONNID

LH 0402

MODULE trans_to_100 OUTPUT.MOVE-CORRESPONDING

wa_spfli TO sdyn_conn.ENDMODULE.

MODULE trans_from_100 INPUT.MOVE-CORRESPONDING

sdyn_conn TO wa_spfli.ENDMODULE.

SDYN_CONN-CARRID

LH

SDYN_CONN-CONNID

0402

Before PAIBefore PAI


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Creating Screen Menu

Title Bar

Menu Bar

Standard Tool BarApplication Tool Bar


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GUI Title Set Screen TitleSET TITLEBAR ABC

GUI Status Set Screen Function CodesSET PF-STATUS XYZ [OF PROGRAM prog][EXCLUDING fcode]

Creating Screen Menu


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Processing Function Codes

SAP AG 2002

Processing the Function Code

DATA:ok_code TYPE sy-ucomm.

MODULE user_command_100 INPUT.

CASE ok_code.

WHEN 'BACK'.LEAVE TO SCREEN 0.

ENDCASE.

ENDMODULE.

DATA:ok_code TYPE sy-ucomm.

MODULE user_command_100 INPUT.

CASE ok_code.

WHEN 'BACK'.LEAVE TO SCREEN 0.

ENDCASE.

ENDMODULE.

ABAPABAPABAP

PROCESS AFTER INPUT.

...MODULE user_command_100.

PROCESS AFTER INPUT.

...MODULE user_command_100.

Screen

Painter

ScreenScreen

PainterPainter

Function key: F3

Function code: BACKFunction type: ' '

General attributesGeneral attributes

Field name Type . . .

. . .OK_CODE OK

Screen Painter

Element list

Screen PainterScreen Painter

Element listElement list

The ok_code ABAP datafield still contains the old

function code after

processing


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Exit Command

Type E function codes Identifies exit commandfunction codes

MODULE at EXIT-COMMAND Processing

for exit command function codes


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Screen Input Validations

Mandatory Fields Input Format

ABAP Dictionary Check

Checking a value list Field f values ( , )

Checking single fields

FIELD MODULE .


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Screen Input Validation

Field MODULE Chain ... Endchain

Addition to field statement and chain endchain

statement - ON REQUEST, ON INPUT


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SAP AG 2002

Checking Groups of Fields

Ready for input again1

EMessage

1111

11

1111

11

MODULE check_input INPUT....

MESSAGE E ...... .ENDMODULE.

ScreenScreen

PainterPainter ABAPABAPPROCESS AFTER INPUT.CHAIN.

FIELD:,

,...

..MODULE check_input.

ENDCHAIN.


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SAP AG 2002

Execution on Input

PROCESS AFTER INPUT.FIELDMODULEON INPUT..

.

.

.

ScreenScreen

PainterPainter

PROCESS AFTER INPUT.CHAIN.

FIELD: ,,

.

.

.

.MODULEON CHAIN-INPUT..ENDCHAIN.ENDCHAIN....

ScreenScreen

PainterPainter

Called whenCalled whenfield contentsfield contents

are not equalare not equal

to initial valueto initial value


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SAP AG 2002

Execution on Change

PROCESS AFTER INPUT.FIELD MODULE ON REQUEST.

.

.

.

ScreenScreenPainterPainter

PROCESS AFTER INPUT.CHAIN.

FIELD: ,,

.

.

.

.MODULE ON CHAIN-REQUEST.

ENDCHAIN....


Execution whenExecution wheninput is newinput is new


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Dialog Message Categories

SAP AG 2002

Dialog Message Categories

E message

Newe

ntriesrequire

d

W message I message

Programcall

Screen 100

A messageX message

Restart

Termination Error Warning Information Success

Newe

ntriespossible

Screen 100 Screen 100 Screen 100

Screen 200S message

Screen 100 Screen 200

Screen 100


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Avoiding Field input checks

SAP AG 2002

Avoiding Field Input Checks

PROCESS AFTER INPUT.MODULE exitAT EXIT-COMMAND.

.

.

.


MODULE exit INPUT.CASE ok_code.WHEN 'CANCEL'.

CLEAR ok_code.LEAVE TO SCREEN 0.

WHEN 'EXIT'.LEAVE PROGRAM.

ENDCASE.ENDMODULE. " EXIT INPUT

ABAPABAP

Execution whenExecution whenfunction hasfunction has

type Etype E


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Calling Next Screen

Set screen , Leave screen. Leave to screen

Call screen


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Setting the next screen dynamically

SAP AG 2002

Setting the Next Screen Dynamically

PBO PAI

Screen Attributes

Screen number 100Next screen 200

Screen Attributes


Screen Attributes


PBO PAI

400

MODULE ...SET SCREEN 300.LEAVE SCREEN.ENDMODULE.


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Dialog Boxes

SAP AG 2002

Calling a Dialog Box Dynamically

101101

MODULE user_command INPUT.

...

CALL SCREEN

STARTING AT lc ur.. . .

ENDMODULE.

101

Screen type...

Modal dialog box...

Next screen 101

Screen 101

MODULE user_command INPUT.

...

CALL SCREEN

STARTING AT lc ur

ENDING AT rc lr.

...ENDMODULE.

101

100100

101101

Screen Attributes100100


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Dynamic Modifications

SAP AG 2002

Dynamically Modifiable Static Attributes

GeneralObject name

Modif. groupsSize-Dynamic

AttributesAttributes

SCREEN-LENGTH

SCREEN-INPUT

SCREEN-OUTPUT

SCREEN-REQUIREDSCREEN-INTENSIFIED

SCREEN-INVISIBLE

SCREEN-ACTIVE

SCREEN-NAME

SCREEN-GROUP1

SCREEN-GROUP2

SCREEN-GROUP3

SCREEN-GROUP4

SCREEN

ProgramDialog behavior

- Input

- Output

- Required

Display Bright

Invisible


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Modifying attributes dynamically

SAP AG 2002

Modifying Attributes Dynamically: Program

ScreenPainterPROCESS BEFORE OUTPUT.

...MODULE modify_screen.

..

.

ABAPMODULE modify_screen OUTPUT.

...LOOP AT SCREEN.

IF screen-group1 = 'SEL'.screen-input = 11.

ENDIF.IF screen-name= 'FIELD1'.

screen-active= 00.ENDIF.MODIFY SCREEN.MODIFY SCREEN.

ENDLOOP.ENDMODULE.


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Set Cursor Position

SAP AG 2002

Setting the Cursor Position Dynamically

SET CURSORFIELD [OFFSET ].

PROCESS BEFORE OUTPUT.MODULE set_cursor.

PROCESS BEFORE OUTPUT.MODULE set_cursor.

Screen

Painter

ABAPAirline

Flight number

Flight date

LH

?

?

MODULE set_cursor OUTPUT.sdyn_conn-carrid = 'LH'.SET CURSORFIELDSDYN_CONN-CONNID.

...ENDMODULE.


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Using SAP Memory


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Process on Help Request

PROCESS ON HELP-REQUEST.FIELD MODULE .

Function module used to display help text

HELP_OBJECT_SHOW

HELP_OBJECT_SHOW_FOR_FIELD


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Process on Value Request

PROCESS ON VALUE-REQUEST.FIELD MODULE .

Function modules used to display list of values -

F4IF_FIELD_VALUE_REQUEST

F4IF_INT_TABLE_VALUE_REQUEST

CR10 Module Pool Day 1

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