abap/4 程序员之路 —— 第 4 天

ABAP/4程序员之路——第 4天

上海华和得易信息技术有限公司王勇

本日学习内容 DIALOG程序 Screen Object和 PBO、 PAI处理

特殊对象处理：对话屏幕，子屏幕以及 Table Control的处理

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box

Radio button and checkbox

Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: Pushbuttons

User-input using the mouse

Display/Change

Display/Change

A

B

A

B

Creating Pushbuttons

PAI. MODULE user_command. . . .

ScreenPainter

Screen Painter

Object name

button

ok_code

Type

OK

FctCode

SWIT

FctTyp

Object name

Object text

FctCode

button

Display/Change

SWIT

Object Attributes

FctTyp

ABAP

Fullscreen EditorDisplay/Change

2

Object List

1

2

1

DATA: ok_code LIKE sy-ucomm, save_ok LIKE ok_code.MODULE user_command INPUT. Save_ok = ok_code. CLEAR ok_code. CASE save_ok. WHEN ‘SWIT’. …… ENDCASE.ENDMODULE.

Pushbuttons with Function Type E

PAI. MODULE exit_command

. . .

ScreenPainter

Screen Painter

Object name

button

ok_code

Type

OK

FctCode

CANC

FctTyp

Object name

Object text

FctCode

button

Cancel

CANC

Object Attributes

FctTyp

ABAP

Fullscreen EditorCancel

Object List

DATA: ok_code LIKE sy-ucomm.MODULE exit_command INPUT. CASE sy-dynnr. WHEN ‘0100’. Leave program. …… ENDCASE.ENDMODULE.

E

E

AT EXIT-COMMAND.

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box


Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: GUI status

Choose functions byclicking with the mouse

Development object Edit Goto System Help

Flight data xxxx

ENTERF1 HelpF2 ChooseF3...

Menu bar

Standard toolbar

Application toolbar

Function keys

Create GUI Status(1)

Double ClickDouble Click


Double ClickDouble Click


EnterEnter

Status: Technical View

Status 001 Status 002 Status ...

Menu bars

M 1

Function key settings

T 1

Application toolbars

D 1

Menu Bar

Enter Enter Transaction Transaction

CodeCode Enter Enter DescriptionDescription

_____

_____

_____

_____The max level is 4

Function Key

Function Key ： Attributes

Attributes

Functional type

• E: Exit command• S: System function• T: Call a Transaction• : Normal application Function• P: Local GUI Function• H: Internal use

Function text

Enter Function Key description

Icon name

以符號方式來表示此Icon

Icon text

以文字方式來表示此Icon

Info. text

Short description

Fastpath

One-characterID letter for functionfast path

Standard Toolbar Functions and Their Reserved Function Keys

Icon Function key Function

SaveBackExit (program)Cancel (Screen)

PrintFindFind nextFirst pagePrevious pageNext page

Last pageHelp

EnterF11

F3Ctrl-F3F12

Ctrl-PCtrl-FCtrl-GCtrl-Page upPage up Page downCtrl-Page down

F1

Navigation - Dialogs

BackBack ExitExit CancelCancel

YesYes YesYes NoNoSaves DialogSaves Dialog

YesYes YesYes NoNoChecks EntriesChecks Entries

Check, then saveCheck, then save Save, then checkSave, then check --SequenceSequence

Save data?Save data? Save data?Save data?Unsaved data will Unsaved data will be lost!be lost!Cancel?Cancel?

ExampleExample

popup_to_popup_to_confirm_stepconfirm_stepororpopup_to_popup_to_confirm_confirm_with_valuewith_value

popup_to_popup_to_confirm_stepconfirm_stepororpopup_to_popup_to_confirm_confirm_with_valuewith_value

popup_to_popup_to_confirm_confirm_loss_of_dataloss_of_data

Function ModuleFunction Modulefor Dialogfor Dialog

Application toolbar

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box


Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: Lists

Displaying data at thefront end

Flight List

CAR ID From To

List Edit Goto System Help

AA 0017 NEW YORK SAN FRANCISCO

LH 0400 FRANKFURT NEW YORK

LH 0402 FRANKFURT BERLIN

Created on: 01 .01.1998By: WITTMANN

Displaying a List Within a Transaction

MODULE < Module_name >.LEAVE TO LIST-PROCESSING.SET PF-STATUS SPACE.

... WRITE...SKIP...ULINE...ENDMODULE.

MODULE < Module_name >.LEAVE TO LIST-PROCESSINGAND RETURN TO SCREEN 300.SET PF-STATUS SPACE. ...ENDMODULE.

MODULE < Module_name >.SUPPRESS DIALOG.LEAVE TO LIST-PROCESSING.SET PF-STATUS SPACE. ...ENDMODULE.

PBO(100)

100100

PBO(100)

PAI(100)

PAI(100)

PBO(100)

100100

PAI(100)

Next screen

Screen 300

F3

F3

List

List

100100

List

100100

100100

Lists in a Modal Dialog Box

Dialog Box

List

200

MODULE LIST OUTPUT. SUPPRESS DIALOG. LEAVE TO LIST-PROCESSING AND RETURN TO SCREEN 0. SET PF-STATUS SPACE. ...

ENDMODULE.

ABAPABAP

PROCESS BEFORE OUTPUT. MODULE LIST .

ScreenScreenPainterPainter

200200

MODULE m INPUT. . . . CALL SCREEN 200 STARTING AT 20 10 ENDING AT 50 15. . . .ENDMODULE.

200

ABAPABAP

100

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box


Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: Selection screen

RestrictingDatabase selections

List Edit Goto System Help

Airline to

From

AA

Frankfurt

This week

This month

This quarter

Any

Flight date

Entering Value Ranges

Airline to ...

From

LHSELECT-OPTIONS ...

PARAMETERS ...

Single valueGreater than or equal

Greater than Less thanNot equal

Less than or eqeual

Select

Exclude from selection

Maintain Selection Options

Airline

Selection table

SIGNI

OPTIONGE

LOWLH

HIGH

Defining and Calling a Selection Screen

SELECTION-SCREEN BEGIN OF SCREEN <nnnn>. ...SELECTION-SCREEN END OF SCREEN <nnnn>.

SELECTION-SCREEN BEGIN OF SCREEN 1200.SELECT-OPTIONS se_carr FOR sflight-carrid.PARAMETERS pa_airpf LIKE spfli-airpfrom.SELECTION-SCREEN END OF SCREEN 1200....CALL SELECTION-SCREEN 1200.

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box


Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: Subscreen

Reserved area on ascreen:Filled at runtime

SubscreenSubscreenareaarea

SubscreenSubscreenareaarea

Subscreen Subscreen

Subscreen I

Creating a Subscreen Area

Subscreen Attributes

Calling a Subscreen

Subscreen name

Program nameScreen number

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box


Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: Tabstrip Control

An easy way to present data that logically belongstogetherFrom To

Country

Airport

Time

DE

TXL

10:10:00

City Berlin

Info

Tabstrip Elements

Depart Arrive Seats

Land

Flughafen

Zeit

DE

TXL

10:10:00

Stadt Berlin

Current tab title

Scrollbar for more tab pages

List of all tab pages

Current page is indicated

Tab border

DepartArrive SeatsBookingsInformation

Tab Page: Technical View

Text

CONTENTS =Subscreen

areaSubscreen

area

+

TextText

PushbuttonPushbutton

Contents =

Subscreen

+

Creating a Tabstrip Control

Tabstrip areaTabstrip area

Tab titlesTab titles

Subscreen areasSubscreen areas

Creating a Tabstrip Control: Tabstrip Area

************************************* INCLUDE MZxxxTOP *************************************CONTROLS: my_tab_strip TYPE TABSTRIP.. . .

ABAPABAP

Type TABSTRIP TABSTRIP corresponds to the structured type CXTABCXTAB _TABSTRIP withthe individual types:

activetab active tab title. . .

Creating a Tabstrip Control: Tab Title

Creating a Tabstrip Control: Subscreens

SubscreenArea

or

Scrolling in a Tabstrip Control

Depart Arr. Info

Page 1

Depart Arr. Info

Page 2

PAI• Determines which page

the user has chosen• Calls the screen again

PBO• Sets the subscreen

corresponding to the page chosen by the user

Scrolling in Tabstrip Controls: Coding

R

CONTROLS: my_tab_strip TYPE TABSTRIP.DATA : dynpro LIKE sy-dynnr, ok_code LIKE sy-ucomm, pressed_tab LIKE sy-ucomm

value '0101'.

MODULE user_command INPUT. CASE ok_code. WHEN 'R1'. pressed_tab = 'R1'. WHEN 'R2'. pressed_tab = 'R2'. ...ENDMODULE.

MODULE set_page OUTPUT. my_tab_strip-activetab = pressed_tab. CASE pressed_tab. WHEN 'R1'. dynpro = '0101'. WHEN 'R2'. dynpro = '0102'. ...ENDMODULE.

ABAPABAP

PROCESS BEFORE OUTPUT. MODULE SET_PAGE. ... CALL SUBSCREEN subarea INCLUDING SYST-CPROG dynpro .

PROCESS AFTER INPUT. CALL SUBSCREEN subarea . ... MODULE user_command.

ScreenScreen

PainterPainter

Subarea

R1

MY_TAB_STRIPMY_TAB_STRIP

Dynpro

R3

FctTyp FctTyp

R2

Screen

Title bar

Pushbutton

Text field

Input/Output field

Status icon

Group box


Selection screen

List

GUI status

Table control

Tabstrip control

Subscreen

Screen Object: Table control

LH

From To

Frankfurt

Frankfurt

Berlin

0400

0402

2407

New

New

San F

Airline

Flgt

Displaying large amounts

of data in tabluar form

ABAP Table Control (Function)

Automatic horizontal and vertical scrolling

Fixed leading columns

Mark rows

Mark and swapcolumns

Change column widthChange and savetable setting

Table Control Elements

Table Control

Creating a Table Control

Processing a Table Control

Further Techniques

Create Table Control Area

1-3 給一個 tablecontrol name

1-1 選取 table control 物件

1-2 圈選所需要的畫面

My_control

************************************* INCLUDE MZxxxTOP *************************************CONTROLS: my_control TYPE TABLEVIEW USING SCREEN '0100'.. . .

ABAPABAP

Create Table Control Fields

或從 table 中 reference field

自己 creat field

Table Control Attributes Table control name

Not delete all head line elements

Show table control label

Show table 直條線

Show table 橫條線

可選擇欄位的條件

增加 checkbox

固定不會移動的欄位

選擇視窗縮小時出現移動 bar

一次可選擇幾筆資料Table control 抬頭


Table Control



Further Techniques

Processing a Table Control(Principle)

Databasetable

678

5

Internal tablebuffer

Database table

1

2345

678

9...

Next page

34

21

ABAP program Screen

PBO

PAI

Table Control Applications(Principle)

Screen (with Table Control)

PBO

PAI

LOOP ...

Read line-by-line from the internal table

ENDLOOP.

LOOP ...

Update the internal tableline-by-line

ENDLOOP.

Scroll page by pageChange database table


In programFill internal table

- CALL SCREEN- Static screen sequence

Filling a Table Control

PROCESS BEFORE OUTPUT.LOOP AT itab_sbook INTO sdyn_book

WITH CONTROL my_ control.ENDLOOP

sdyn_book

ABAP programmScreen

1122

LH 0400 ...

LH 0400 ...

33

itab_sbook

LH 0400 ...

Fields fromsdyn_book

11 33+ +

Automatically done using loop in the flowlogic!

ScreenScreenPainterPainter 22

23

24

34

Change the Contents of a TC

PROCESS AFTER INPUT.LOOP AT itab_sbook.

FIELD sdyn_book-smoker MODULE modify_ itab ON REQUEST.

ENDLOOP.

MODULE modify_itab INPUT.MODIFY itab_sbook FROM sdyn_book

INDEX my_control-current_line ...ENDMODULE.

ABAPABAP


sdyn_book

ABAP program11 3

LH 0400 ...

22

LH 0400 ...

LH 0407 ...LH 2402 ...

itab_sbook

11 22+

Performed automaticallyin the loop in the flow logic

3

Programmed in ABAP

Screen

LH 0402 ...

2

34

.

1

Table Controls: Field Transport in the PBO

Transport ABAP

table control fields

to screen fields

LOOP end

LOOP start

MODULE output_1

Airline LH

To

0400

0402

Frankfurt

Frankfurt New

New

2407 Berlin San

FromFlight

Table Controls: Field Transport in the PAI

Airline LH

To

0400

0402

Frankfurt

Frankfurt New

New

2407 Berlin San

FromFlight

MODULE input_1

Transport table cotrol

fields from the screen to

the ABAP fields

LOOP LOOP startstart

MODULE input_2

LOOP LOOP endend

Transport all fields from

the screen to the ABAP

fields except table

control fields and f1

1

2Airline LH

To

0400

0402

Frankfurt

Frankfurt New

New

2407 Berlin San

FromFlight

1

2


Table Control



Further Techniques

Type of TABLEVIEW - Type Group CXTAB

TYPE-POOL CXTAB

TYPES:

BEGIN OF CXTAB_COLUMN, SCREEN LIKE SCREEN, “Attributes struktur SCREEN

INDEX TYPE I, “Position of a column on the screen

SELECTED(1) TYPE C, “Indicator ‘column selected’

VISLENGTH LIKE ICON-OLENG, “Visualised length of a column

INVISIBLE(1) TYPE C, “Indicator ‘column invisible’

END OF CXTAB_COLUMN,


BEGIN OF CXTAB_CONTROL, FIXED_COLS TYPE I, “Number of fixed columns

LINES TYPE I, “Number of lines to display

TOP_LINE TYPE I, “Top line during next PBO

CURRENT_LINE TYPE I, “Current line during LOOP/ENDLOOP

LEFT_COL TYPE I, “First scrollable column after fixed area

LINE_SEL_MODE TYPE I, “Line-selection : none(0), single(1), multiple(2)

COL_SEL_MODE TYPE I, “Column-selection : none(0), single(1), multiple(2)

LINE_SELECTOR(1) TYPE C, “Indicator: ‘With line-selection col’

V_SCROLL(1) TYPE C, “not used

H_GRID(1) TYEP C, “Indicator: ‘Horizontal grid-lines’

V_GRID(1) TYPE C, “Indicator: ‘Vertikal grid-lines’

COLS TYEP STANDARD TABLE OF CXTAB_COLUMN

WITH NON-UNIQUE DEFAULT KEY,

INVISIBLE(1) TYPE C,

END OF CXTAB_CONTROL,


BEGIN OF CXTAB_TABSTRIP, ACTIVETAB LIKE SCREEN-NAME,

%_SCROLLPOSITION LIKE SCREEN-NAME,

INVISIBLE(1) TYPE C,

END OF CXTAB_TABSTRIP.

* If you want to start the original setting, as below:

REFRESH CONTROL my_control FROM SCREEN <screen_number>.

Screen Flow Logic

PROCESS BEFORE OUTPUT. ……

LOOP AT initial_table WITH

CONTROL my_control CURSOR my_control-current_line.

……

ENDLOOP.

PROCESS AFTER INPUT. LOOP AT initial_table.

……

ENDLOOP.

……

MODULE USER_COMMAND_0100.

Changing the Attributes of a TC(1)

General attrs Column attrs

Table control attributes

FIXED_COLS ...

PAI or PBO.

FIELD dyn_col_num MODULE change_table_control_1 ON REQUEST.


MODULE change_table_control_1 ... . my_control-fixed_cols

= dyn_col_num. ...ENDMODULE.

ABAPABAP

dyn_col_num 3

Changing the Attributes of a TC(2)

R

PBO or PAI

MODULE change_table_control_2.


...

Gen. attributes Col. attributes

Table control attributes

INDEX ...

COLS

... INTENSIFIEDSCREEN-

DATA wa LIKE LINE OF my_control-cols. ...MODULE change_table_control...LOOP AT my_control-cols INTO wa. IF wa-index BETWEEN 1 AND 3

wa-screen-intensified = 1. ELSE. wa-screen-intensified = 0. ENDIF. MODIFY my_control-cols FROM wa. ENDLOOP.ENDMODULE.

ABAPABAP

Modifying Field Attributes Temporarily

R

...

Screen table for line: Screen table for line:

Name

Col1

Col2

Col3

. . .

Name

Col1

Col2

Col3

. . .

InputInput OutputOutput IntensifiedIntensified ......

222

1

LOOP AT itab INTO sdyn_conn. MODULE modify_screen .ENDLOOP.


1

MODULE modify_screen OUTPUT. CHECK spfli_itab-flag = 'X'.

LOOP AT SCREEN. IF screen-group1 = 'SEL'. screen-intensified = 1. MODIFY SCREEN. ENDIF. ENDLOOP.

ENDMODULE.

ABAPABAP

2

2

Sorting a Table Control: Example

DATA wa LIKE LINE OF my_control-cols. ...MODULE user_command_0200 INPUT. ...LOOP AT my_control-cols INTO wa. IF wa-selected = 'X'. SORT itab BY (wa-screen-name+5). ENDIF. ENDLOOP.

ENDMODULE.

ABAPABAP

Scrolling Page by Page in a Table Control

R

DATA: looplines LIKE sy-loopc. ...MODULE get_looplinesget_looplines OUTPUT. looplines = sy-loopc.ENDMODULE.

MODULE user_command_0200user_command_0200 INPUT. ... WHEN 'F21'. my_control-top_line = 1. WHEN 'F22'. my_control-top line = my_control-top _line - looplines. IF my_control-top_line < 1. my_control-top_line = 1. ... WHEN 'F24'. flights-top_line = flights_itab_lines - looplines + 1.ENDMODULE.

ABAPABAP

PROCESS BEFORE OUTPUT.

LOOP... . MODULE get_looplinesget_looplines. ENDLOOP.

PROCESS AFTER INPUT.

LOOP... . ... ENDLOOP.

MODULE user_command_0200user_command_0200.


Table Control: Cursor Position(Example)

R

SyntaxSyntax

GET CURSOR FIELD f VALUE v LINE l OFFSET o.

SET CURSORSET CURSOR FIELD f FIELD f LINE l LINE l OFFSET o. OFFSET o.

Finding out the cursor position:Which line of the internal table corresponds to a line of the table control?

DATA: selline LIKE sy-stepl, tabix LIKE sy-tabix. ...

GET CURSOR LINE selline.tabix = my_control-TOP_LINE + selline - 1.READ TABLE spfli_itab INDEX tabix.

ABAPABAP

abap/4 程序员之路 —— 第 4 天

Documents