ABAP总结之五，Table Control

Table Control作为一个表维护的标准工具，在屏幕程序中经常使用。它的特点就是简单，实现速度快。缺点就是不够灵活。
我个人更喜欢用ALV grid，由于基于OO，ALV grid绘制图形表格，更加灵活，功能更加强大（大家从标准的ALV grid中自带了那么多功能键就知道了）。但是往往强大的工具，实现起来就相对就比较复杂。
所以对于需求比较简单的功能，诸如从一些外部文件导入数据，然后在维护表中稍加修改和检查，再自动生成单据的需求，就可以用Table Control。对于一些，需要复杂事件触发的程序，ALV grid更加适用。
Table Control有自动和人工两种生成方法。使用的时候要视具体境况而定。我的例子中，是在自动生成的程序中，做了一下修改，使之为我所用。（能复用的代码为什么不用呢？）
屏幕流：

PROCESS BEFORE OUTPUT.
*&SPWIZARD: PBO FLOW LOGIC FOR TABLECONTROL 'ZTC'
MODULE ZTC_CHANGE_TC_ATTR.
*&SPWIZARD: MODULE ZTC_CHANGE_COL_ATTR.
LOOP AT GT_ZKEVIN
INTO GS_ZKEVIN
WITH CONTROL ZTC
CURSOR ZTC-CURRENT_LINE.
MODULE ZTC_GET_LINES.
*&SPWIZARD: MODULE ZTC_CHANGE_FIELD_ATTR
ENDLOOP.

MODULE STATUS_1000.
*
PROCESS AFTER INPUT.
*&SPWIZARD: PAI FLOW LOGIC FOR TABLECONTROL 'ZTC'
LOOP AT GT_ZKEVIN.
CHAIN.
FIELD GS_ZKEVIN-ID.
FIELD GS_ZKEVIN-NAME.
MODULE ZTC_MODIFY ON CHAIN-REQUEST.
endchain.
FIELD GS_ZKEVIN-LINE
MODULE ZTC_MARK ON REQUEST.
ENDLOOP.
MODULE ZTC_USER_COMMAND.
*&SPWIZARD: MODULE ZTC_CHANGE_TC_ATTR.
*&SPWIZARD: MODULE ZTC_CHANGE_COL_ATTR.

MODULE USER_COMMAND_1000.

*----------------------------------------------------------------------*
* Program Name: Z_KEVIN_TABLECONTROL
* Project : N/A
* Author : Kevin.Zhang
* Date : 2007.1.1
* Module : N/A
* Description : Template of Program
*
*
*
* Special features: N/A
*
*
*----------------------------------------------------------------------*
* Modifications:
* Author Date Commented as Description
*----------- -------- ----------- ----------------------------------*
*
*----------------------------------------------------------------------*

REPORT Z_KEVIN_TABLECONTROL.
*$*$----------------------------------------------------------------$*$*
*$*$ Global Types, Data Statements, Ranges, Constants $*$*
*$*$----------------------------------------------------------------$*$*

*-----------------------------------------------------------------------
* Types
*-----------------------------------------------------------------------
TYPES: BEGIN OF T_ZKEVIN.
TYPES: LINE TYPE C.
INCLUDE STRUCTURE ZKEVIN.
TYPES: END OF T_ZKEVIN.

TYPES: BEGIN OF T_SAVE.
INCLUDE STRUCTURE ZKEVIN.
TYPES: END OF T_SAVE.

*-----------------------------------------------------------------------
* Internal Tables and Work Areas
*-----------------------------------------------------------------------
DATA GT_ZKEVIN TYPE STANDARD TABLE OF T_ZKEVIN.
DATA GS_ZKEVIN TYPE T_ZKEVIN.
DATA GT_DELE TYPE STANDARD TABLE OF T_ZKEVIN.
DATA GS_DELE TYPE T_ZKEVIN.
DATA GT_SAVE TYPE STANDARD TABLE OF T_SAVE.
DATA GS_SAVE TYPE T_SAVE.

*-----------------------------------------------------------------------
* Variables
*-----------------------------------------------------------------------
*&SPWIZARD: LINES OF TABLECONTROL 'ZTC'
DATA: G_ZTC_LINES LIKE SY-LOOPC.

DATA: OK_CODE LIKE SY-UCOMM.

*-----------------------------------------------------------------------
* Global GUI Controls Variables / Structures
*-----------------------------------------------------------------------
*&SPWIZARD: DECLARATION OF TABLECONTROL 'ZTC' ITSELF
CONTROLS: ZTC TYPE TABLEVIEW USING SCREEN 1000.

*$*$----------------------------------------------------------------$*$*
*$*$ Main Program $*$*
*$*$----------------------------------------------------------------$*$*

*--------- START-OF-SELECTION ----------

SELECT *
FROM ZKEVIN
INTO CORRESPONDING FIELDS OF TABLE GT_ZKEVIN.

SORT GT_ZKEVIN BY ID.

CALL SCREEN 1000.

*--------- END-OF-SELECTION ----------

*$*$----------------------------------------------------------------$*$*
*$*$ Subroutines $*$*
*$*$----------------------------------------------------------------$*$*

*&SPWIZARD: OUTPUT MODULE FOR TC 'ZTC'. DO NOT CHANGE THIS LINE!
*&SPWIZARD: UPDATE LINES FOR EQUIVALENT SCROLLBAR
MODULE ZTC_CHANGE_TC_ATTR OUTPUT.
DESCRIBE TABLE GT_ZKEVIN LINES ZTC-LINES.
ENDMODULE. "ZTC_CHANGE_TC_ATTR OUTPUT

*&SPWIZARD: OUTPUT MODULE FOR TC 'ZTC'. DO NOT CHANGE THIS LINE!
*&SPWIZARD: GET LINES OF TABLECONTROL
MODULE ZTC_GET_LINES OUTPUT.
G_ZTC_LINES = SY-LOOPC.
ENDMODULE. "ZTC_GET_LINES OUTPUT

*&SPWIZARD: INPUT MODULE FOR TC 'ZTC'. DO NOT CHANGE THIS LINE!
*&SPWIZARD: MODIFY TABLE
MODULE ZTC_MODIFY INPUT.
MODIFY GT_ZKEVIN
FROM GS_ZKEVIN
INDEX ZTC-CURRENT_LINE.
ENDMODULE. "ZTC_MODIFY INPUT

*&SPWIZARD: INPUT MODUL FOR TC 'ZTC'. DO NOT CHANGE THIS LINE!
*&SPWIZARD: MARK TABLE
MODULE ZTC_MARK INPUT.
DATA: G_ZTC_WA2 LIKE LINE OF GT_ZKEVIN.
IF ZTC-LINE_SEL_MODE = 1
AND GS_ZKEVIN-LINE = 'X'.
LOOP AT GT_ZKEVIN INTO G_ZTC_WA2
WHERE LINE = 'X'.
G_ZTC_WA2-LINE = ''.
MODIFY GT_ZKEVIN
FROM G_ZTC_WA2
TRANSPORTING LINE.
ENDLOOP.
ENDIF.
MODIFY GT_ZKEVIN
FROM GS_ZKEVIN
INDEX ZTC-CURRENT_LINE
TRANSPORTING LINE.
ENDMODULE. "ZTC_MARK INPUT

*&SPWIZARD: INPUT MODULE FOR TC 'ZTC'. DO NOT CHANGE THIS LINE!
*&SPWIZARD: PROCESS USER COMMAND
MODULE ZTC_USER_COMMAND INPUT.
OK_CODE = SY-UCOMM.
PERFORM USER_OK_TC USING 'ZTC'
'GT_ZKEVIN'
'LINE'
CHANGING OK_CODE.
SY-UCOMM = OK_CODE.
ENDMODULE. "ZTC_USER_COMMAND INPUT

*----------------------------------------------------------------------*
* INCLUDE TABLECONTROL_FORMS *
*----------------------------------------------------------------------*

*&---------------------------------------------------------------------*
*& Form USER_OK_TC *
*&---------------------------------------------------------------------*
FORM USER_OK_TC USING P_TC_NAME TYPE DYNFNAM
P_TABLE_NAME
P_MARK_NAME
CHANGING P_OK LIKE SY-UCOMM.

*&SPWIZARD: BEGIN OF LOCAL DATA----------------------------------------*
DATA: L_OK TYPE SY-UCOMM,
L_OFFSET TYPE I.
*&SPWIZARD: END OF LOCAL DATA------------------------------------------*

*&SPWIZARD: Table control specific operations *
*&SPWIZARD: evaluate TC name and operations *
SEARCH P_OK FOR P_TC_NAME.
IF SY-SUBRC <> 0.
EXIT.
ENDIF.
L_OFFSET = STRLEN( P_TC_NAME ) + 1.
L_OK = P_OK+L_OFFSET.
*&SPWIZARD: execute general and TC specific operations *
CASE L_OK.
WHEN 'INSR'. "insert row
PERFORM FCODE_INSERT_ROW USING P_TC_NAME
P_TABLE_NAME.
CLEAR P_OK.

WHEN 'DELE'. "delete row
PERFORM FCODE_DELETE_ROW USING P_TC_NAME
P_TABLE_NAME
P_MARK_NAME.
CLEAR P_OK.

WHEN 'P--' OR "top of list
'P-' OR "previous page
'P+' OR "next page
'P++'. "bottom of list
PERFORM COMPUTE_SCROLLING_IN_TC USING P_TC_NAME
L_OK.
CLEAR P_OK.
* WHEN 'L--'. "total left
* PERFORM FCODE_TOTAL_LEFT USING P_TC_NAME.
*
* WHEN 'L-'. "column left
* PERFORM FCODE_COLUMN_LEFT USING P_TC_NAME.
*
* WHEN 'R+'. "column right
* PERFORM FCODE_COLUMN_RIGHT USING P_TC_NAME.
*
* WHEN 'R++'. "total right
* PERFORM FCODE_TOTAL_RIGHT USING P_TC_NAME.
*
WHEN 'MARK'. "mark all filled lines
PERFORM FCODE_TC_MARK_LINES USING P_TC_NAME
P_TABLE_NAME
P_MARK_NAME .
CLEAR P_OK.

WHEN 'DMRK'. "demark all filled lines
PERFORM FCODE_TC_DEMARK_LINES USING P_TC_NAME
P_TABLE_NAME
P_MARK_NAME .
CLEAR P_OK.
* WHEN 'SASCEND' OR
* 'SDESCEND'. "sort column
* PERFORM FCODE_SORT_TC USING P_TC_NAME
* l_ok.
ENDCASE.

ENDFORM. " USER_OK_TC

*&---------------------------------------------------------------------*
*& Form FCODE_INSERT_ROW *
*&---------------------------------------------------------------------*
FORM FCODE_INSERT_ROW
USING P_TC_NAME TYPE DYNFNAM
P_TABLE_NAME .

*&SPWIZARD: BEGIN OF LOCAL DATA----------------------------------------*
DATA L_LINES_NAME LIKE FELD-NAME.
DATA L_SELLINE LIKE SY-STEPL.
DATA L_LASTLINE TYPE I.
DATA L_LINE TYPE I.
DATA L_TABLE_NAME LIKE FELD-NAME.
FIELD-SYMBOLS <TC> TYPE CXTAB_CONTROL.
FIELD-SYMBOLS <TABLE> TYPE STANDARD TABLE.
FIELD-SYMBOLS <LINES> TYPE I.
*&SPWIZARD: END OF LOCAL DATA------------------------------------------*

ASSIGN (P_TC_NAME) TO <TC>.

*&SPWIZARD: get the table, which belongs to the tc *
CONCATENATE P_TABLE_NAME '[]' INTO L_TABLE_NAME. "table body
ASSIGN (L_TABLE_NAME) TO <TABLE>. "not headerline

*&SPWIZARD: get looplines of TableControl *
CONCATENATE 'G_' P_TC_NAME '_LINES' INTO L_LINES_NAME.
ASSIGN (L_LINES_NAME) TO <LINES>.

*&SPWIZARD: get current line *
GET CURSOR LINE L_SELLINE.
IF SY-SUBRC <> 0. " append line to table
L_SELLINE = <TC>-LINES + 1.
*&SPWIZARD: set top line *
IF L_SELLINE > <LINES>.
<TC>-TOP_LINE = L_SELLINE - <LINES> + 1 .
ELSE.
<TC>-TOP_LINE = 1.
ENDIF.
ELSE. " insert line into table
L_SELLINE = <TC>-TOP_LINE + L_SELLINE - 1.
L_LASTLINE = <TC>-TOP_LINE + <LINES> - 1.
ENDIF.
*&SPWIZARD: set new cursor line *
L_LINE = L_SELLINE - <TC>-TOP_LINE + 1.

*&SPWIZARD: insert initial line *
INSERT INITIAL LINE INTO <TABLE> INDEX L_SELLINE.
<TC>-LINES = <TC>-LINES + 1.
*&SPWIZARD: set cursor *
SET CURSOR LINE L_LINE.

ENDFORM. " FCODE_INSERT_ROW

*&---------------------------------------------------------------------*
*& Form FCODE_DELETE_ROW *
*&---------------------------------------------------------------------*
FORM FCODE_DELETE_ROW
USING P_TC_NAME TYPE DYNFNAM
P_TABLE_NAME
P_MARK_NAME .

*&SPWIZARD: BEGIN OF LOCAL DATA----------------------------------------*
DATA L_TABLE_NAME LIKE FELD-NAME.

FIELD-SYMBOLS <TC> TYPE CXTAB_CONTROL.
FIELD-SYMBOLS <TABLE> TYPE STANDARD TABLE.
FIELD-SYMBOLS <WA>.
FIELD-SYMBOLS <MARK_FIELD>.
*&SPWIZARD: END OF LOCAL DATA------------------------------------------*

ASSIGN (P_TC_NAME) TO <TC>.

*&SPWIZARD: get the table, which belongs to the tc *
CONCATENATE P_TABLE_NAME '[]' INTO L_TABLE_NAME. "table body
ASSIGN (L_TABLE_NAME) TO <TABLE>. "not headerline

*&SPWIZARD: delete marked lines *
DESCRIBE TABLE <TABLE> LINES <TC>-LINES.

LOOP AT <TABLE> ASSIGNING <WA>.

*&SPWIZARD: access to the component 'FLAG' of the table header *
ASSIGN COMPONENT P_MARK_NAME OF STRUCTURE <WA> TO <MARK_FIELD>.

IF <MARK_FIELD> = 'X'.
DELETE <TABLE> INDEX SYST-TABIX.
IF SY-SUBRC = 0.
<TC>-LINES = <TC>-LINES - 1.
READ TABLE <TABLE> INTO GS_ZKEVIN INDEX SYST-TABIX.
CLEAR GS_ZKEVIN-LINE.
APPEND GS_ZKEVIN TO GT_DELE.
ENDIF.
ENDIF.
ENDLOOP.

ENDFORM. " FCODE_DELETE_ROW

*&---------------------------------------------------------------------*
*& Form COMPUTE_SCROLLING_IN_TC
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* -->P_TC_NAME name of tablecontrol
* -->P_OK ok code
*----------------------------------------------------------------------*
FORM COMPUTE_SCROLLING_IN_TC USING P_TC_NAME
P_OK.
*&SPWIZARD: BEGIN OF LOCAL DATA----------------------------------------*
DATA L_TC_NEW_TOP_LINE TYPE I.
DATA L_TC_NAME LIKE FELD-NAME.
DATA L_TC_LINES_NAME LIKE FELD-NAME.
DATA L_TC_FIELD_NAME LIKE FELD-NAME.

FIELD-SYMBOLS <TC> TYPE CXTAB_CONTROL.
FIELD-SYMBOLS <LINES> TYPE I.
*&SPWIZARD: END OF LOCAL DATA------------------------------------------*

ASSIGN (P_TC_NAME) TO <TC>.
*&SPWIZARD: get looplines of TableControl *
CONCATENATE 'G_' P_TC_NAME '_LINES' INTO L_TC_LINES_NAME.
ASSIGN (L_TC_LINES_NAME) TO <LINES>.

*&SPWIZARD: is no line filled? *
IF <TC>-LINES = 0.
*&SPWIZARD: yes, ... *
L_TC_NEW_TOP_LINE = 1.
ELSE.
*&SPWIZARD: no, ... *
CALL FUNCTION 'SCROLLING_IN_TABLE'
EXPORTING
ENTRY_ACT = <TC>-TOP_LINE
ENTRY_FROM = 1
ENTRY_TO = <TC>-LINES
LAST_PAGE_FULL = 'X'
LOOPS = <LINES>
OK_CODE = P_OK
OVERLAPPING = 'X'
IMPORTING
ENTRY_NEW = L_TC_NEW_TOP_LINE
EXCEPTIONS
* NO_ENTRY_OR_PAGE_ACT = 01
* NO_ENTRY_TO = 02
* NO_OK_CODE_OR_PAGE_GO = 03
OTHERS = 0.
ENDIF.

*&SPWIZARD: get actual tc and column *
GET CURSOR FIELD L_TC_FIELD_NAME
AREA L_TC_NAME.
IF SYST-SUBRC = 0.
IF L_TC_NAME = P_TC_NAME.
*&SPWIZARD: et actual column *
SET CURSOR FIELD L_TC_FIELD_NAME LINE 1.
ENDIF.
ENDIF.

*&SPWIZARD: set the new top line *
<TC>-TOP_LINE = L_TC_NEW_TOP_LINE.

ENDFORM. " COMPUTE_SCROLLING_IN_TC

*&---------------------------------------------------------------------*
*& Form FCODE_TC_MARK_LINES
*&---------------------------------------------------------------------*
* marks all TableControl lines
*----------------------------------------------------------------------*
* -->P_TC_NAME name of tablecontrol
*----------------------------------------------------------------------*
FORM FCODE_TC_MARK_LINES USING P_TC_NAME
P_TABLE_NAME
P_MARK_NAME.
*&SPWIZARD: EGIN OF LOCAL DATA-----------------------------------------*
DATA L_TABLE_NAME LIKE FELD-NAME.

FIELD-SYMBOLS <TC> TYPE CXTAB_CONTROL.
FIELD-SYMBOLS <TABLE> TYPE STANDARD TABLE.
FIELD-SYMBOLS <WA>.
FIELD-SYMBOLS <MARK_FIELD>.
*&SPWIZARD: END OF LOCAL DATA------------------------------------------*

ASSIGN (P_TC_NAME) TO <TC>.

*&SPWIZARD: get the table, which belongs to the tc *
CONCATENATE P_TABLE_NAME '[]' INTO L_TABLE_NAME. "table body
ASSIGN (L_TABLE_NAME) TO <TABLE>. "not headerline

*&SPWIZARD: mark all filled lines *
LOOP AT <TABLE> ASSIGNING <WA>.

*&SPWIZARD: access to the component 'FLAG' of the table header *
ASSIGN COMPONENT P_MARK_NAME OF STRUCTURE <WA> TO <MARK_FIELD>.

<MARK_FIELD> = 'X'.
ENDLOOP.
ENDFORM. "fcode_tc_mark_lines

*&---------------------------------------------------------------------*
*& Form FCODE_TC_DEMARK_LINES
*&---------------------------------------------------------------------*
* demarks all TableControl lines
*----------------------------------------------------------------------*
* -->P_TC_NAME name of tablecontrol
*----------------------------------------------------------------------*
FORM FCODE_TC_DEMARK_LINES USING P_TC_NAME
P_TABLE_NAME
P_MARK_NAME .
*&SPWIZARD: BEGIN OF LOCAL DATA----------------------------------------*
DATA L_TABLE_NAME LIKE FELD-NAME.

FIELD-SYMBOLS <TC> TYPE CXTAB_CONTROL.
FIELD-SYMBOLS <TABLE> TYPE STANDARD TABLE.
FIELD-SYMBOLS <WA>.
FIELD-SYMBOLS <MARK_FIELD>.
*&SPWIZARD: END OF LOCAL DATA------------------------------------------*

ASSIGN (P_TC_NAME) TO <TC>.

*&SPWIZARD: get the table, which belongs to the tc *
CONCATENATE P_TABLE_NAME '[]' INTO L_TABLE_NAME. "table body
ASSIGN (L_TABLE_NAME) TO <TABLE>. "not headerline

*&SPWIZARD: demark all filled lines *
LOOP AT <TABLE> ASSIGNING <WA>.

*&SPWIZARD: access to the component 'FLAG' of the table header *
ASSIGN COMPONENT P_MARK_NAME OF STRUCTURE <WA> TO <MARK_FIELD>.

<MARK_FIELD> = SPACE.
ENDLOOP.
ENDFORM. "fcode_tc_mark_lines
*&---------------------------------------------------------------------*
*& Module STATUS_1000 OUTPUT
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
MODULE STATUS_1000 OUTPUT.
SET PF-STATUS 'MAIN100'.
* SET TITLEBAR 'xxx'.

ENDMODULE. " STATUS_1000 OUTPUT
*&---------------------------------------------------------------------*
*& Module USER_COMMAND_1000 INPUT
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
MODULE USER_COMMAND_1000 INPUT.
CASE OK_CODE.
WHEN 'BACK'.
LEAVE TO SCREEN 0.
WHEN 'SAVE'.
LOOP AT GT_ZKEVIN INTO GS_ZKEVIN WHERE ID NE ''.
GS_SAVE-ID = GS_ZKEVIN-ID.
GS_SAVE-NAME = GS_ZKEVIN-NAME.
APPEND GS_SAVE TO GT_SAVE.
CLEAR GS_SAVE.
ENDLOOP.

MODIFY ZKEVIN FROM TABLE GT_SAVE.
CLEAR GS_SAVE.
REFRESH GT_SAVE.
IF SY-SUBRC NE 0.
MESSAGE 'DATA UPDATE ERROR!' TYPE 'I'.
EXIT.
ELSE.
MESSAGE 'DATA UPDATE OK!' TYPE 'I'.
ENDIF.

LOOP AT GT_DELE INTO GS_DELE.
GS_SAVE-ID = GS_DELE-ID.
GS_SAVE-NAME = GS_DELE-NAME.
APPEND GS_SAVE TO GT_SAVE.
CLEAR GS_SAVE.
ENDLOOP.
DELETE ZKEVIN FROM TABLE GT_SAVE.
CLEAR GS_SAVE.
REFRESH GT_SAVE.
IF SY-SUBRC NE 0.
MESSAGE 'DATA UPDATE ERROR!' TYPE 'I'.
ELSE.
MESSAGE 'DATA UPDATE OK!' TYPE 'I'.
ENDIF.
ENDCASE.
ENDMODULE. " USER_CO