SAP Dynamic Screen Sequence

8/13/2019 SAP Dynamic Screen Sequence

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IBM Global Services

2005 IBM CorporationDynamic Screen Sequence | Dec-2008

DynamicScreenSequence


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IBM Global Services

2005 IBM Corporation2 Dec-2008Dynamic Screen Sequence |

Objectives

The participants will be able to:

Know about the next screen attribute for a screen.

Understand the functioning of the following screen navigation commands:

LEAVE SCREEN

SET SCREEN

LEAVE TO SCREEN

CALL SCREEN


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IBM Global Services


Overview

Academy Awards

Year

Category

1994

PIC

Academy Awards

Year

Category

1994

PIC

Winner Forrest Gump

Notes

Critic Dean

Currently, the screen

sequence of our online

program is determined by

static Next Screen

attributes on each screen.

We will learn how to

dynamically set the screen

sequence and add a pop-up

dialog box to enter a critics

name.

Exit Edit Loop

Exit Update

Enter Name

The Shawshank Redemption should have won.


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IBM Global Services


LEAVE SCREEN Statement

PROCESS BEFORE OUTPUT.

MODULE INITIALIZE.

PROCESS AFTER INPUT.

MODULE ONE.

MODULE TWO.

** PAI Modules **

MODULE ONE INPUT.

. . .

LEAVE SCREEN.

. . .

ENDMODULE.

MODULE TWO INPUT.

. . .

ENDMODULE.

Screen 9000

Next Screen

attribute is 9001.

When LEAVE SCREEN is encountered,

the system immediately terminates the

current screens PAI event and goes to the PBO event

of the screen specified in the Next Screen attribute.


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IBM Global Services


SET SCREEN Statement


FIELD YMOVIE-AAYEAR

VALUES (BETWEEN 1927 AND 1996).

CHAIN.

FIELD: YMOVIE-AAYEAR,YMOVIE-CATEGORY.

MODULE SELECT_LISTING.

ENDCHAIN.

Screen 9000

** MZA06I01 - PAI Modules **

MODULE SELECT_LISTING INPUT.

IF OKCODE = EDIT.

SET SCREEN 9001.

* code to select record from

YMOVIE

ENDIF.

ENDMODULE.

Next Screen

attribute is 9000.

When SET SCREEN is encountered,the system temporarily ignores the

value in the Next Screen attribute

and uses the value specified instead.

The current screens PAI processing

is notterminated.


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IBM Global Services


LEAVE TO SCREEN Statement


FIELD YMOVIE-AAYEAR

VALUES (BETWEEN 1927 AND 1996).

CHAIN.

FIELD: YMOVIE-AAYEAR,

YMOVIE-CATEGORY.

MODULE SELECT_LISTING.

ENDCHAIN.

Screen9000

** MZA06I01 - PAI Modules **

MODULE SELECT_LISTING INPUT.

IF OKCODE = EDIT.

* code to select record from

YMOVIE

LEAVE TO SCREEN 9001.

ENDIF.

ENDMODULE.

Next Screen

attribute is 9000.

When LEAVE TO SCREEN is encountered,the system terminates the current

screens PAI event and immediately

goes to the PBO event of the screen

specified in the statement.


7/13

IBM Global Services


CALL SCREEN Statement

Academy Awards

Year

Category

1994

PIC

Winner Forrest Gump

Notes

Critic Dean

Exit Update

The Shawshank Redemption should have won.

Enter critics name

Dean

Titlebar

Exit

Screen 9002 is a Modaldialog box type screen

with a dialog box type

GUI status.

CALL SCREEN 9002 STARTING AT 30 5 ENDING AT 60 10.

This ABAP code would be in a PAI module

for screen 9001.

Enter Name


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IBM Global Services


Demonstration

Demonstration of screen navigation commands in a sample online program.


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IBM Global Services


Practice

Demonstration of screen navigation commands in a sample online program.


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IBM Global Services


Summary

The screen sequence of an online program is determined by Next Screenpointers.

When the system encounters the LEAVE SCREEN ABAP statement, it

immediately terminates the screens PAI event and goes to the PBO event of the

screen specified in the Next Screen attribute.

When the system encounters the SET SCREEN ABAP statement, ittemporarily overrides the Next Screen attribute with this and the PAI

processing continues. After all PAI modules are executed, the system goes to

the PBO event of .

When the system encounters the LEAVE TO SCREEN ABAP

statement, it terminates the screens PAI event and immediately goes to the PBO

of .

The LEAVE TO SCREEN statement performs the functionality of two

statements: SET SCREEN and LEAVE SCREEN.


12/13

IBM Global Services


Summary (Contd.)

When the system encounters the CALL SCREEN ABAP statement,it temporarily suspends the current screens PAI processing and immediately

goes to the PBO event of . When control returns back to the calling

screen, its PAI processing will resume.

After you have called another screen, you need to code a way back to the

calling screen. Using screen number zero will accomplish this task.


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IBM Global Services


Questions

Screen Attributes

Short Description

Screen Type

Next screen 9100

Screen 9100

Screen Attributes

Short Description

Screen Type

Next screen

Screen 9100

What happens after all PAI

modules are processed and

the next screen is itself?

What happens after all PAI

modules are processed and

the next screen is blank?

Documents

SAP Dynamic Screen Sequence