topic what in Application Development and Automation Discussions

what

Former Member — Thu, 03 Jan 2008 04:29:35 GMT

Hi,

What is table control and what is the use for that.

Re: what

Former Member — Thu, 03 Jan 2008 04:37:49 GMT

Table Controls

ABAP offers two mechanisms for displaying and using table data in a screen. These mechanisms are table controls and step loops.

Table controls and step loops are types of screen tables you can add to a screen in the Screen Painter

Table Controls in ABAP Programs

To handle table controls in ABAP programs, you must declare a control in the declaration part of the program for each table control using the following statement:

CONTROLS <ctrl> TYPE TABLEVIEW USING SCREEN <scr>.

where <ctrl> is the name of the table control on a screen in the ABAP program. The control allows the ABAP program to read the attributes of the table control and to influence the control. The statement also declares a deep structure of name <ctl>. The data type of the structure corresponds to the type CXTAB_CONTROL defined in the type group CXTAB in the ABAP Dictionary.

At runtime the components of the structure contain the attributes of the table control. Several of the initial values are determined in the Screen Painter. The initial value for the control <ctl> is taken from the screen which is determined using the addition USING.

If you write the statement

REFRESH CONTROL <ctrl> FROM SCREEN <scr>.

you can initialize a table control at any time with the initial value of a screen <scr>. Values that are not taken from the settings in the Screen Painter, are set to the current status of the table control at PAI

Check this link for more details.

http://help.sap.com/saphelp_nw04/helpdata/en/9f/dbac1d35c111d1829f0000e829fbfe/content.htm

Regards,

Maha

Re: what

Former Member — Thu, 03 Jan 2008 04:40:04 GMT

Table control is one of the two mechanisms for displaying and using table data in a screen. The mechanism is step loops. Table controls and step loops are types of screen tables you can add to a screen in the Screen Painter.

http://help.sap.com/saphelp_nw04/helpdata/en/9f/dbac1d35c111d1829f0000e829fbfe/frameset.htm

Vinodh Balakrishnan

Re: what

Former Member — Thu, 03 Jan 2008 04:40:05 GMT

Hi,

ABAP offers two mechanisms for displaying and using table data in a screen. These mechanisms are table controls and step loops. Table controls and step loops are types of screen tables you can add to a screen in the Screen Painter. For example, the following screen contains a table control at the bottom:

TABLE CONTROL

These are the screen elements used to display tabular data they can be called

as screen tables( like STEP LOOP).To use table control we have to create it on the screen using SCREEN PAINTER(SE51) and declare a control variable of TYPE TABLEVIEW using CONTROLS statement in the ABAP program. We have to use LOOP .. ENDLOOP statement in both PBO and PAI with or without AT int_table parameter. IF AT int_table parameter is not used than we have to place a MODULE call between the LOOP...ENDLOOP statement to fill the screen table rows from the ABAP program in PBO and program our own scrolling functions

using OK_CODE field.

Having a parallel loop(at screen table rows & int table rows) by using parameter

AT int_table makes the ABAP code simple.

A special structure of type CXTAB_CONTROL is used to set/get various

attributes of table control at runtime like CURRENT_LINE ,TOP_LINE.

ABAP declaration

CONTROLS: tab_con TYPE TABLEVIEW USING SCREEN nnnn

Here tab_con is the same name we used in screen for the table control.

This ABAP statement will declare a control variable that will be used to access

the table control , and set it's various attributes like number of fixed columns(tab_con-FIXED_COLS) ,total number of records it will display(tab_con-LINES).It is of type CXTAB_CONTROL and is a deep structure(structure containing structures).

REFRESH CONTROL tab_con FROM SCREEN nnnn

This ABAP statement will initialize the table control on the screen nnnn to its initial values.

PBO processing

In PBO we have to use the screen LOOP ...ENDLOOP statement , with or without

intenal table.

LOOP WITH CONTROL tab_con.

MODULE fill_tab_con.

ENDLOOP.

Here a module should be called between the loop endloop statement to transfer

data from th ABAP program to the screen table through a structure.This module

should use the CURRENT_LINE attribute of the table control variable to get the

current screen table record index to read the data from the internal table into a work area.

e.g.

READ TABLE int_table INDEX tab_con-CURRENT_LINE

The record read will be placed in the header line of the internal table and will be available to the similarly named screen fields or if these are different it can be written explicitly. e.g.

screen_field_name = int_table-field_name

...

LOOP AT int_table INTO workarea WITH CONTROL tab_con CURSOR i FROM

n1 TO n2.

ENDLOOP.

Here the module call is not required to fill the screen table.The CURSOR parameter is a integer of type I indicating which absolute internal table line

should be the first to display on the table control .FROM n1 TO n2 can be used

to restrict the starting line and ending line number of the internal table , they are of type SY-TABIX.

In both cases before the LOOP statement a module should be called which

is generally for setting of status ,in which we should fill the LINES attribute

(tab_con-LINES ) of the control with the total number of internal table records,doing this ensures correct and automatic scrolling.

The ABAP statement DESCRIBE TABLE int_table LINES lines can be used

to get the total lines in an int table.

PAI Processing

We have to use LOOP ... ENDLOOP in PAI so that data can transfer fro table control to ABAP program. If we want to write changes to the data we should

call a module between the LOOP ... ENDLOOP. The MODULE call to process user commands (SY-UCOM) should be called after the ENDLOOP statement.

e.g.

PROCESS AFTER INPUT

MODULE mod AT EXIT-COMMAND.

LOOP AT itab_table or LOOP "depending on whether we are using AT int_table

MODULE modify_int_table.

ENDLOOP.

MODULE user_command.

In the MODULE call modify_int_table we can use

MODIFY int_table FROM workarea INDEX tab_con-CURRENT_LINE

or we can use

int_table-field_name = screen_field_name.

Hope this helps.

Regards,

Renjith MIchael.

Re: what

Former Member — Sat, 05 Jan 2008 06:56:43 GMT

Hi Mahitha,

See this link

http://help.sap.com/saphelp_nw04/helpdata/en/9f/dbac1d35c111d1829f0000e829fbfe/frameset.htm

Plzz Reward if it is useful,

Mahi.