Step by step abap_input help or lov

Input Help (List of Values)
Creating Input Help

Prerequisites
1) Transport Request [see StepByStepCreateTransportRequestUsingSE80.pdf]
2) Package [use the package created in the first class] or create new [see
StepByStep_ABAP_Create_Package.doc]
3) Copy Z027393_005A as Z027393_007A [See
StepByStep_Copy_Function_Group_Program.pdf]

Instead of creating from scratch we are using the program created in one of the previous class
ending with ‘005A’ -- duplicating it and making changes. First copy the program and continue
from here.

Note: There are 5 methods to create list of values
1) Fixed Value (DOMAIN LEVEL) - Hard coded list in Data Dictionary – Using domain (of the
Data Element) of the field.
2) Check Tables (FIELD LEVEL) – Specifying the Check table on the Field level.
3) Assigning the "Search Help" repository object (DATA ELEMENT LEVEL) – Create a
"Search Help" Object [as an independent step] and then assign it to data element of the field.
4) Assigning the "Search Help" repository object (SCREEN ELEMENT LEVEL) – Create a
"Search Help" Object [as an independent step] and then assign it to dynpro screen element in
screen painter.
5) Self defined Dropdown List Boxes (SCREEN ELEMENT LEVEL) – Most flexible but
requires simple SQL to populate the list – USES the PROCESS ON VALUE-REQUEST (POV)
flow logic.

In the following instructions, we are creating Input Help using the 4th and 5th methods.

Step by Step Instructions (complete prerequisites shown above
before you proceed)
Launch SE80.

Ensure that you are on the ‘Repository Browser’.

Select Package from the drop down and enter your Package name [ZxxxxxxA] where xxxxxx is
your SAP Login ID or Oracle ID, then click on the [Display] button. Your Function Group
should be displayed below the package [if it was previously copied correctly to this package.]

Open the Function Group Zxxxxxx_007A that was previously copied from Zxxxxxx_005A (if
not already opened.)

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To display the property page, double click on the program name (node - Zxxxxxx_007A). The
properties may be updated by clicking on the [Change <> Display] icon (Ctrl+F1). If any values
are updated (example: the short text), ensure they are saved by clicking on the [Save] button.

Now, click on the [Main program] button.

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After the main program is opened, toggle the [Change <> Display] icon (Ctrl+F1) to update the
program code. Note the name of the Main Program [SAPLZ027393_007A] it will be used to
create a transaction code (T-code) later.

Add description on the top as shown.

*&---------------------------------------------------------------------*
*& Module Pool Z027393_007A
*& DEMO -> Input Help (List of Values.)
*&---------------------------------------------------------------------*

Save the program.

Activate the Function Group by clicking on the [Activate] button on the top tool bar.

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If a list of objects to be activated is provided, select all the objects (related to this program), by
clicking on each of them and then click on the [Continue] button or [hit Enter] to activate them
all.

Before we make any changes to create the Input Help, we will confirm that the program runs fine
using the T-Code.

If you have not created a Transaction Code while copying the program, create it now.

To create a Transaction Code (T-Code), we need the name of the Function Group Main program
[SAPLZ027393_007A] and use following menu in SE80 (or by directly using T-Code SE93 –
not shown here.)

Enter the Transaction Code name and a short description. Leave remaining fields as default as
shown below on this screen. Click [Continue] or hit [Enter].

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Enter program name as [SAPLZ027393_007A] and the (starting) Screen number as [0100].
Save. Accept the Package and the Transport Request in the subsequent screens.

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Run the program by entering the T-code/Transaction Code [Z027393_007A] or
[/nZ027393_007A], to confirm that the program runs fine.

Note: /n is required if you are not currently in the SAP Easy Access screen, but in another
transaction.

We will use (5) Self defined Dropdown List Boxes
(SCREEN ELEMENT LEVEL) – Most flexible but
requires simple SQL to populate the list for these fields.

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We will use (4) Assigning the "Search Help" repository object (SCREEN
ELEMENT LEVEL) – Create a "Search Help" Object [as an independent
step] and then assign it to DYNPRO screen element in screen painter for
this (CITYFROM) and the CITYTO Field in the next TAB.

PART 1). Let us start with the Screen 0100 changes, as mentioned using (5) Self defined
Dropdown List Boxes (SCREEN ELEMENT LEVEL.)

Double click on the screen 0100 under the screen sub-node that is listed under the function group
we are currently working on.

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Add the PROCESS ON VALUE-REQUEST (POV) Flow Logic as shown.

PROCESS ON VALUE-REQUEST.

FIELD ZBC400_S_HDR_CURR-CARRID MODULE create_dropdown_box1.

FIELD ZBC400_S_HDR_CURR-CONNID MODULE create_dropdown_box2.

Save the screen.

Note that modules create_dropdown_box1 and create_dropdown_box2 do not exist yet, we will
now create them using forward navigation.

Double click on the module create_dropdown_box1. The following pop-up is displayed.

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Click on the ‘Yes’ button.

Since this is a small application, include this new module in include file LZ027393_007AI01
(note the ‘I’ [Input] in the name.)

VALUE-REQUEST (POV) modules are considered an INPUT type rather than OUTPUT types,
because they are activated whenever user generates an event on the screen (click something or
hit a function key).

(Optional) If you are creating a new INCLUDE the following message may be displayed. Click
on [Continue] button or hit Enter.

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The module is created in the INCLUDE file, add the following code (just need to add the second
line – the empty module shell is already created by the system.)

MODULE CREATE_DROPDOWN_BOX1 INPUT.

dynpro_utilities1=>value_help1( ).

ENDMODULE. " CREATE_DROPDOWN_BOX1 INPUT

The code basically calls a static method value_help1 in the class dynpro_utilities1.
(Note: we haven’t defined the CLASS and its STATIC METHOD yet – we will do that in a
minute.)

Save the INCLUDE file.

Click on the Back button to go the Flow Logic of the screen 100 (or double click on the screen
0100 on the left side and then click on the Flow Logic tab.)

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Double click on the module create_dropdown_box2. The following pop-up is displayed to create
the module using forward navigation.

Click on ‘Yes’, the select the same include file LZ027393_007AI01 again.

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The module is created in the INCLUDE file, add the following code

MODULE CREATE_DROPDOWN_BOX2 INPUT.

dynpro_utilities1=>value_help2( ).

ENDMODULE. " CREATE_DROPDOWN_BOX2 INPUT

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We now need to add the CLASS with the static METHODS value_help1 and value_help2.

Double click on the LZ027393_007ATOP include.

Add the following code (both the DEFINITION and the IMPLEMENTATION of the class)

CLASS DYNPRO_UTILITIES1 DEFINITION.

PUBLIC SECTION.
CLASS-METHODS value_help1.
CLASS-METHODS value_help2.

ENDCLASS. "DYNPRO_UTILITIES1

CLASS DYNPRO_UTILITIES1 IMPLEMENTATION.

METHOD value_help1.

TYPES: BEGIN of carrid_line,
carrid TYPE ZBC400_S_DYNCONN-carrid,

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END OF carrid_line.

DATA carrid_list TYPE STANDARD TABLE OF carrid_line.
SELECT distinct carrid from ZBC400_S_DYNCONN into corresponding fields
of table carrid_list order by carrid.

CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'CARRID'
value_org = 'S'
TABLES
value_tab = carrid_list
EXCEPTIONS
parameter_error = 1
no_values_found = 2
OTHERS = 3.
IF sy-subrc <> 0.

ENDIF.

ENDMETHOD.

METHOD value_help2.

* TYPES: BEGIN of connid_line,
* connid TYPE ZBC400_S_DYNCONN-connid,
* END OF connid_line.
*
* DATA connid_list TYPE STANDARD TABLE OF connid_line.
* SELECT distinct connid from ZBC400_S_DYNCONN into
* corresponding fields of table
* connid_list order by connid.

TYPES: BEGIN of connid_line,
connid TYPE ZBC400_S_DYNCONN-connid,
CITYFROM TYPE ZBC400_S_DYNCONN-CITYFROM,
END OF connid_line.

DATA connid_list TYPE STANDARD TABLE OF connid_line.
*SELECT distinct connid CITYFROM from ZBC400_S_DYNCONN into
* corresponding fields of table connid_list order by connid.
SELECT distinct connid from ZBC400_S_DYNCONN into corresponding fields
of table connid_list order by connid.

CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'CONNID'
value_org = 'S'
TABLES
value_tab = connid_list
EXCEPTIONS
parameter_error = 1
no_values_found = 2
OTHERS = 3.
IF sy-subrc <> 0.

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ENDIF.
ENDMETHOD.

ENDCLASS. "DYNPRO_UTILITIES1

The function 'F4IF_INT_TABLE_VALUE_REQUEST' is already defined by SAP, so does not
have to be redefined.
On the layout of the Screen 100 to access the field properties of ZBC400_S_HDR_CURR-
CARRID field and select ‘list’ from the Dropdown property.

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Or make this change directly on the Text/I/O template Tab (of the Element list Tab) of the screen
properties.

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Repeat the same for the ZBC400_S_HDR_CURR-CONNID field as shown below

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Or

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We have now created the INPUT HELP for the two fields on the screen 100. We have used the
‘Self defined Dropdown List Boxes (SCREEN ELEMENT LEVEL).’ As mentioned this is the
most flexible but requires simple SQL to populate the list.

Activate and run the program using the transaction id created earlier.

Depending on what need to be displayed change the SQL select statement in the STATIC
METHOD of the CLASS.

SELECT distinct connid from ZBC400_S_DYNCONN into corresponding fields of
table connid_list order by connid.

Or

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SELECT distinct connid from ZBC400_S_DYNCONN into corresponding fields of
table connid_list where connid < '1004' order by connid.

Or add a description field to see a description in the list

SELECT distinct connid CITYFROM from ZBC400_S_DYNCONN into corresponding
fields of table connid_list order by connid.

PART 2) Let us now work on the Screen 0200 (actually subscreens 0201 and 0202) changes, as
mentioned using (4) Assigning the "Search Help" repository object (SCREEN ELEMENT
LEVEL) – Create a "Search Help" Object [as an independent step] and then assign it to dynpro
screen element in screen painter.

We need to first create the repository object ‘Search Help’. Once created since this is a
repository object any one can use it.

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Enter a new/unique Search Help name as shown below. Use a unique name – example:
Zxxxxxx_SRCH where xxxxxx is your SAP Login ID or Oracle ID

Click on the Enter button or hit Enter.

Enter a description and click on the Selection Method search (dropdown)

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You may search for database tables or for views.

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Select ZCITY_TBL

Save the search help and enter appropriate package name.

Enter the appropriate workbench request.

Enter the search help parameters (enter manually or click on the search for list of values for
various parameters line by line.) Then select the EXP check box for both and the LPos and SPos
fields as shown below. LPos is Position in the hit list of an elementary search help. SPos is
Position in dialog box of an elementary search help.

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Search screen shown below for the above parameters in case you wish to select and not enter
these manually.

LPos

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Note: See the next screen to understand the significance of the LPos and SPos parameters.

Save the search help object and activate it, by clicking on the Save button and Activate button
respectively. If multiple objects are displayed to Activate, select all or all those which are
relevant.

The next step is to associate the search help object (Z027393_SRCH or Zxxxxxx_SRCH) to the
required field ZBC400_S_HDR_CURR-CITYFROM. This field is on the screen 0201. Open the
screen as shown below and double click on the CITYFROM Field to access the properties. Enter
the search help object Z027393_SRCH or Zxxxxxx_SRCH into the Search Help field as shown
below.

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Alternately this can also be done directly from the screen’s Reference Tab that is under the
Element List tab as shown below. Save and Activate the screen.

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Repeat the same for the other field (ZBC400_S_HDR_CURR-CITYTO) that needs the Search
Help of the list of values to be displayed. The field is on screen 0202 as shown below.

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Similarly this can also be done directly from the screen’s Reference Tab that is under the
Element List tab as shown below.

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Save and Activate the screen.

Run the program by using the Transaction Code created earlier.

The search help can be accessed for Carried ID, Connection ID and for both the CITY fields as
shown in the next few screenshots.

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Screen 100

Screen 200 (Tab 1)

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Screen 200 (Tab 2)

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Step by step abap_input help or lov

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