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Table Controls

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Table Controls & Step Loops

Table controls and step loops are objects for

screen table display that you add to a screenin the Screen Painter. From a programming

standpoint, table controls and step loops arealmost exactly the same. Table controls are

simply enhanced step loops that display datawith the Look and Feel of a table widget in adesktop application.

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Screen tables

A table can be created in transaction. These

tables, when designed on the screen are calledas SCREEN TABLES.

These are of two types.

Table Controls and

Step loops

These tables are treated as Loops.

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Features of Table Controls

Data is displayed in the form of table.

Table control gives user the feeling of anactual table.

You can scroll through the table vertically as

well as horizontally.

You can select rows and columns.

You can resize the with of columns.

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Features contd.

You can have separator lines between rows

and columns.

Automatic resizing of the table when the user

resizes the window.

You can update information in the table

control and it can be updated in the databasetable by writing code for it.

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Steps for creating table control

Declaration of table control in module pool

program.

Designing of table controls on the screen.

Passing data to table control in flow logic.

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Declaration of TC in MPP

syntax:

controls typetableview using screen .

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Tableview Structure

A tableview structure contains the following fields

FIXED_COLS

LINES TOP_LINE

CURRENT_LINE

LEFT_COL

H_GRID

V_GRID LINE_SEL_MODE

COL_SEL_MODE

LINE_SELECTOR

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D

esigning Table control on screen

Click on Table in Control bar and place it onthe screen. You can adjust the length and

width of the Table Control. Name the table control.(same name as given

in data declaration).

From dictionary object OR from programfields select the fields and place them in thetable control.

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Passing data to table control

Usually transfer of data from program toscreen is automatic.

In case of TC, you need to explicitlytransfer the data to table control.

ABAP/4 provides Loop statement, which

is associated with flow logic to transfer thedata.

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Passing of data contd.

PBO.

Loop at withcontrol cursor

.

module.

Endloop.

PAI.

Loop at < name of internal table>.Endloop.

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Scroll variables

Top_line : the row of table where the screen

display starts.

Current_line : the row currently being

processed inside a loop.

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Transfer of data from prg to TC.

With Loop at statement, the first row is

placed in the header of internal table.

If any module is specified between Loop and

End loop, it will be executed. In this module,generally we will be assigning this internal

table fields to table control screen fields.

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Transfer of data contd.

The row in internal table is transferred to the

TC as stated in the Loop at.. statement.

The system encounters the Endloop

statement and control is passed back to thenext line of internal table.

In the same way all the records of the internaltable are passed to the TC.