可编辑ALV的数据检查模板

  *&---------------------------------------------------------------------*
*& Report  Z_BARRY_ALV_DATACHANGED
*&
*&---------------------------------------------------------------------*
*& 更多参考程序:BCALV_EDIT_08
*&
*&---------------------------------------------------------------------*

REPORT  Z_BARRY_ALV_DATACHANGED.


DATA: BEGIN OF ITAB OCCURS 0 ,
        MBLNR LIKE MSEG-MBLNR ,
        KOSTL LIKE MSEG-KOSTL ,
      END OF ITAB .

DATA: OK_CODE LIKE SY-UCOMM .
DATA: L_VALID(1) TYPE C.

DATA: GO_GRID             TYPE REF TO CL_GUI_ALV_GRID,
      GO_CUSTOM_CONTAINER TYPE REF TO CL_GUI_CUSTOM_CONTAINER.
DATA: GT_FIELDCAT TYPE LVC_T_FCAT,
      GS_FIELDCAT TYPE LVC_S_FCAT,
      GS_VARIANT  TYPE DISVARIANT ,
      GT_FILT     TYPE LVC_T_FILT,
      GS_FILT     TYPE LVC_S_FILT,
      SLA         TYPE LVC_S_LAYO .

CLASS LCL_EVENT_RECEIVER DEFINITION DEFERRED .
DATA: EVENT_RECEIVER TYPE REF TO LCL_EVENT_RECEIVER.

*---------------------------------------------------------------------*
*       CLASS lcl_event_receiver DEFINITION
*---------------------------------------------------------------------*
CLASS LCL_EVENT_RECEIVER DEFINITION.
  PUBLIC SECTION.
    METHODS HANDLE_DATA_CHANGED
        FOR EVENT DATA_CHANGED OF CL_GUI_ALV_GRID
            IMPORTING ER_DATA_CHANGED.
ENDCLASS.                    "lcl_event_receiver DEFINITION

*---------------------------------------------------------------------*
*       CLASS lcl_event_receiver IMPLEMENTATION
*---------------------------------------------------------------------*
CLASS LCL_EVENT_RECEIVER IMPLEMENTATION.
  METHOD HANDLE_DATA_CHANGED.
    PERFORM HANDLE_DATA_CHANGED USING ER_DATA_CHANGED.
  ENDMETHOD.                    "handle_data_changed
ENDCLASS.                    "lcl_event_receiver IMPLEMENTATION

INITIALIZATION.
*  gd_repid = sy-repid.
  PERFORM FIELDCAT_INIT USING GT_FIELDCAT[].

START-OF-SELECTION.
  CALL SCREEN 0100 .

*&---------------------------------------------------------------------*
*&      Module  USER_COMMAND_0100  INPUT
*&---------------------------------------------------------------------*
MODULE USER_COMMAND_0100 INPUT.
  CASE OK_CODE.
    WHEN 'BACK'.
      LEAVE PROGRAM.
    WHEN 'ENTE'.
      PERFORM ENTER.
    WHEN 'CHANGE'.
      PERFORM CHANGE.
  ENDCASE.
  CLEAR OK_CODE .
ENDMODULE.                 " USER_COMMAND_0100  INPUT

*&---------------------------------------------------------------------*
*&      Form  load_data_into_grid
*&---------------------------------------------------------------------*
FORM LOAD_DATA_INTO_GRID.
  SELECT * FROM MSEG INTO CORRESPONDING FIELDS OF TABLE ITAB
  UP TO 20 ROWS .

  SLA-CWIDTH_OPT = 'X'.
  SLA-ZEBRA      = 'X'.

  CALL METHOD GO_GRID->SET_TABLE_FOR_FIRST_DISPLAY
    EXPORTING
      IS_VARIANT                    = GS_VARIANT
      I_SAVE                        = 'A'
      IS_LAYOUT                     = SLA
    CHANGING
      IT_OUTTAB                     = ITAB[]
      IT_FIELDCATALOG               = GT_FIELDCAT[]
    EXCEPTIONS
      INVALID_PARAMETER_COMBINATION = 1
      PROGRAM_ERROR                 = 2
      TOO_MANY_LINES                = 3
      OTHERS                        = 4.

  CALL METHOD GO_GRID->SET_READY_FOR_INPUT "处于编辑状态
    EXPORTING
      I_READY_FOR_INPUT = 1.

  CALL METHOD CL_GUI_CONTROL=>SET_FOCUS    "设置焦点在go_grid 上
    EXPORTING
      CONTROL = GO_GRID .
ENDFORM.                    " load_data_into_grid


*&--------------------------------------------------------------------*
*&      Form  fieldcat_init
*&--------------------------------------------------------------------*
FORM FIELDCAT_INIT USING RT_FIELDCAT TYPE LVC_T_FCAT.
  DATA: LS_FIELDCAT TYPE LVC_S_FCAT.

  PERFORM FRM_CATLG_SET USING:
  'MBLNR'  'X' '凭证'       '' 'MBLNR' 'MSEG' RT_FIELDCAT,
  'KOSTL'  '' '成本中心'   'X'  ''      ''     RT_FIELDCAT.

ENDFORM.   "fieldcat_init

*---------------------------------------------------------------------*
*       FORM frm_catlg_set                                            *
*---------------------------------------------------------------------*
FORM FRM_CATLG_SET USING P_FIELD P_KEY P_TEXT P_EDIT REF_F REF_T
                          RT_FIELDCAT  TYPE LVC_T_FCAT .
  DATA:  TMP_FIELDCAT TYPE LVC_S_FCAT.

  TMP_FIELDCAT-FIELDNAME     =  P_FIELD.
  TMP_FIELDCAT-KEY           =  P_KEY .
  TMP_FIELDCAT-SCRTEXT_L     =  P_TEXT.
  TMP_FIELDCAT-EDIT          =  P_EDIT.
  TMP_FIELDCAT-REF_FIELD     = REF_F.
  TMP_FIELDCAT-REF_TABLE     = REF_T.

  APPEND TMP_FIELDCAT TO RT_FIELDCAT .
  CLEAR TMP_FIELDCAT .
ENDFORM.                    " FRM_CATLG_SET

*&---------------------------------------------------------------------*
*&      Form  change
*&---------------------------------------------------------------------*
FORM CHANGE .
  DATA: LS_STABLE TYPE LVC_S_STBL.
  LS_STABLE-ROW = 'X'.
  LS_STABLE-COL = 'X'.

  IF GO_GRID->IS_READY_FOR_INPUT( ) = 0.
    CALL METHOD GO_GRID->SET_READY_FOR_INPUT
      EXPORTING
        I_READY_FOR_INPUT = 1.
  ELSE.
    CALL METHOD GO_GRID->CHECK_CHANGED_DATA  "把修改的内容更改到内表里
      IMPORTING
        E_VALID = L_VALID.
    CALL METHOD GO_GRID->SET_READY_FOR_INPUT
      EXPORTING
        I_READY_FOR_INPUT = 0.
*    CALL METHOD go_grid->refresh_table_display.
    CALL METHOD GO_GRID->REFRESH_TABLE_DISPLAY
      EXPORTING
        IS_STABLE = LS_STABLE
      EXCEPTIONS
        FINISHED  = 1
        OTHERS    = 2.
  ENDIF.
ENDFORM.                    " change


*&---------------------------------------------------------------------*
*&      Module  STATUS_0100  OUTPUT
*&---------------------------------------------------------------------*
MODULE STATUS_0100 OUTPUT.
  SET PF-STATUS 'MAIN100'.
  GS_VARIANT-REPORT = SY-REPID.

  IF GO_GRID IS INITIAL.
    CREATE OBJECT GO_GRID
      EXPORTING
        I_PARENT = CL_GUI_CONTAINER=>SCREEN0.
    CREATE OBJECT EVENT_RECEIVER.

    SET HANDLER EVENT_RECEIVER->HANDLE_DATA_CHANGED FOR GO_GRID.

    IF SY-BATCH IS INITIAL.
      CALL METHOD GO_GRID->REGISTER_EDIT_EVENT
        EXPORTING
          I_EVENT_ID = CL_GUI_ALV_GRID=>MC_EVT_ENTER. "回车时触发
*        i_event_id = cl_gui_alv_grid=>mc_evt_modified. "单元格更改触发
    ENDIF.

    PERFORM LOAD_DATA_INTO_GRID.
  ENDIF.
ENDMODULE.                 " STATUS_0100  OUTPUT

*&---------------------------------------------------------------------*
*&      Form  ENTER
*&---------------------------------------------------------------------*
FORM ENTER .
  DATA: UCOMM LIKE SY-UCOMM.

  UCOMM = '&DATA_SAVE'." '&REFRESH'.
  CALL METHOD GO_GRID->SET_FUNCTION_CODE
    CHANGING
      C_UCOMM = UCOMM.
ENDFORM.                    " ENTER

*&---------------------------------------------------------------------*
*&      Form  HANDLE_DATA_CHANGED
*&---------------------------------------------------------------------*
FORM HANDLE_DATA_CHANGED USING DATA_CHANGED TYPE REF TO CL_ALV_CHANGED_DATA_PROTOCOL..
  FIELD-SYMBOLS:  TYPE STANDARD TABLE,
                  TYPE LVC_T_MODI ,
                  TYPE LVC_S_MODI ,
                     LIKE LINE OF ITAB.

  IF NOT DATA_CHANGED->MP_MOD_ROWS IS INITIAL.
    ASSIGN DATA_CHANGED->MP_MOD_ROWS->* TO .
    ASSIGN DATA_CHANGED->MT_MOD_CELLS TO .
    LOOP AT  ASSIGNING .
      IF -KOSTL = 'ABC' .
        READ TABLE  INDEX SY-TABIX ASSIGNING .
        CALL METHOD DATA_CHANGED->ADD_PROTOCOL_ENTRY
          EXPORTING
            I_MSGID     = 'OO'
            I_MSGTY     = 'E'
            I_MSGNO     = '000'
            I_MSGV1     = '不可以为ABC'
            I_FIELDNAME = 'KOSTL'
            I_ROW_ID    = -ROW_ID
*            i_tabix     = tabix
             .
      ENDIF.
    ENDLOOP.
  ENDIF.
ENDFORM.                    " HANDLE_DATA_CHANGED


*CL_ALV_CHANGED_DATA_PROTOCOL参数的常用方法和属性
*
*方法                   用途
*MODIFY_CELL            修改指定位置单元格的值
*GET_CELL_VALUE         获取单元格的值
*ADD_PROTOCOL_ENTRY     弹出一个消息，必须使用系统标准的消息类
*MODIFY_PROTOCOL_ENTRY  修改消息
*PROTOCOL_IS_VISIBLE    是否显示错误信息提示
*REFRESH_PROTOCOL       删除错误消息
*
*属性                   用途
*MT_PROTOCOL            LOGs
*MT_MOD_CELLS           更新的单元格信息
*MP_MOD_ROWS            更新了的行的信息
*MT_GOOD_CELLS          正确的CELL的值
*MT_DELETED_ROWS        被删除的行信息
*MT_INSERTED_ROWS       新插入的行信息