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Defining Selection Screen in ABAP

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Defining Selection Screen in ABAP
Stechies

Selection Screen Creation and use ABAP

Objective

  • Concepts associated with
  • The creation and use of selection screens in ABAP reports
  • The SELECT-OPTIONS statement
  • Selection tables
  • Formatting the selection screen
  • Selection texts, lines, comments, frames,
  • The PARAMETERS statement
  • Radio button groups, check boxes
  • Executing reports with variants

Selection Screens

  • Used to allow the user to control the database selections of the report
  • Allows interactive
  • Assignment of values to variables
  • With the PARAMETERS statement
  • Determine selection criteria for database fields
  • Single values, range of values, sets of values, ...
  • With the SELECT-OPTIONS statement

Defining Selection Screen

There are 3 ABAP statements for defining selection screens:

  • PARAMETERS for single fields
  • SELECT-OPTIONS for complex selections
  • SELECTION-SCREEN for formatting the selection screen and defining user-specific selection screens

Parameters

  • Used to enable user to enter values for single fields on the selection screen
  • Define variables in the program using PARAMETERS statement.
  • Basic form of PARAMETERS statement:
  • PARAMETERS <p>[(<length>)] [TYPE <type>|like <obj>] [DECIMALS <d>].

Parameters Variants

  • PARAMETERS <p> ...... DEFAULT <f> ......
  • PARAMETERS <p> ...... OBLIGATORY ......
  • PARAMETERS <p> ...... LOWER CASE ......
  • PARAMETERS <p> ...... AS CHECKBOX ......
  • PARAMETERS <p> ...... RADIOBUTTON GROUP <radi>......

Parameters Keyword

PARAMETERS <field> TYPE <type> [DEFAULT <value>].

Select-Options

  • Allow the user to easily handle complex selections
  • Basic form of the SELECT-OPTIONS statement :
  • SELECT-OPTIONS <seltab> for <f>.
  • <F> is a column of a database table or an internal field in the program.
  • Internally defines an internal table of standard table type with header line known as a selection table

Select-options Contd..

Structure of selection tables
SIGN – type C length 1
Values ‘I’ or ‘E’
OPTION – type c length 2
Values ‘EQ’, ‘NE’, ‘LT’, ‘BT’, etc.
LOW – data type same as of <f>
HIGH – data type same as of <f>

Select-Options Variants

  • SELECT-OPTIONS <seltab> FOR <f> DEFAULT <g> [TO <h>]
  • SELECT-OPTIONS <seltab> FOR <f> ... LOWERCASE
  • SELECT-OPTIONS <selcrit> FOR <f> ... OBLIGATORY
  • SELECT-OPTIONS <seltab> FOR <f> ..... NO-EXTENSION
  • SELECT-OPTIONS <seltab> FOR <f> ..... NO INTERVALS

Selection-Screen

  • SELECTION-SCREEN SKIP [<n>].
  • SELECTION-SCREEN ULINE [[/]<pos(len)>]
  • SELECTION-SCREEN COMMENT [/]<pos(len)> <comm> [FOR FIELD <f>]

Selection-screen – Elements on a Single Line

Several Elements in a Single line

SELECTION-SCREEN BEGIN OF LINE.
...
SELECTION-SCREEN END OF LINE.

SELECTION-SCREEN POSITION <pos>.

Example:

  • SELECTION-SCREEN BEGIN OF LINE.
  • SELECTION-SCREEN COMMENT 1(10) TEXT-001. PARAMETERS: P1(3), P2(5), P3(1).
  • SELECTION-SCREEN END OF LINE.

Selection-Screen – Blocks of Elements

Create logical block of elements on selection screen

SELECTION-SCREEN BEGIN OF BLOCK <block>
[WITH FRAME [TITLE <title>]]
[NO INTERVALS].
...
Selection-screen end of block <block>.

Example
Selection-screen begin of block rad1 with frame title text-002.

  • Parameters r1 RADIOBUTTON group gr1.
  • Parameters r2 RADIOBUTTON group gr1.
  • Parameters r3 RADIOBUTTON group gr1.

Selection-screen end of block rad1

Calling Selection Screen

Standard selection screen

  • Called automatically between the INITIALIZATION and START-OF- SELECTION events.

User-defined selection screen

  • CALL SELECTION-SCREEN <numb> [STARTING AT <x1> <y 1>] [ENDING AT <x2> <y 2>].