ALV基础二：ALV的扩展功能

https://www.cnblogs.com/sapSB/p/8532072.html

参考这个，做扩展，有些人喜欢用OO ALV有些喜欢用普通的CALL FUNC ALV。。。我只用LVC。。。

先说明一下，每个报表程序，我都会自定义工具栏，只是为了以防万一。工具栏有个一键填充的功能，可以把ALV常用的按钮都添加到工具栏，所以不需要自己去想加什么按钮。。

双击按钮进入工具栏界面，

入图，选择调整模板

普通的LIST，选择list viewer,下面那个复制程序的工具栏还不如直接从程序复制快。。。然后就可以了。

打印：https://www.cnblogs.com/sapSB/p/7735719.html

编辑：https://www.cnblogs.com/sapSB/p/5168184.html

今天新做的个测试例子：

REPORT YLY001.

DATA:GT_FIELDCAT TYPE LVC_T_FCAT.
DATA GS_FIELDCAT LIKE LINE OF GT_FIELDCAT.
DATA LS_LAYOUT TYPE LVC_S_LAYO.
DATA LT_EVENT TYPE SLIS_T_EVENT.
DATA LS_EVENT LIKE LINE OF LT_EVENT.
DATA LR_GRID TYPE REF TO CL_GUI_ALV_GRID.
DATA:GT_T100 TYPE STANDARD TABLE OF T100,
     GS_T100 TYPE T100.

DEFINE APPEND_FIELDCAT .
  CLEAR GS_FIELDCAT.
  GS_FIELDCAT-FIELDNAME = &.
  GS_FIELDCAT-SCRTEXT_L = &.
  GS_FIELDCAT-OUTPUTLEN = &.
  GS_FIELDCAT-NO_ZERO = &.
  GS_FIELDCAT-EDIT = &.
  APPEND GS_FIELDCAT TO GT_FIELDCAT.
END-OF-DEFINITION.

START-OF-SELECTION.
  PERFORM PRM_GET_DATA.
*  PERFORM PRM_SET_FIELD.
  PERFORM PRM_SHOW.
*&---------------------------------------------------------------------*
*&      Form  PRM_GET_DATA
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM PRM_GET_DATA .
  SELECT * INTO TABLE GT_T100 FROM T100 UP TO  ROWS WHERE SPRSL = 'E' AND ARBGB = 'ZCRM_MSG'.
ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  PRM_SHOW
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM PRM_SHOW .
  REFRESH GT_FIELDCAT.
  LS_LAYOUT-CWIDTH_OPT    = 'X'. "优化列宽选项是否设置
  LS_LAYOUT-ZEBRA                = 'X'.
*  ls_layout-box_fname        = 'SEL'.
  APPEND_FIELDCAT:'SPRSL'             '语言'                 'X' '',
                  'ARBGB'             '区域'                 'X' '',
                  'MSGNR'             '消息号'                 'X' 'X',
                  'TEXT'             '消息文本'                 '' ''.

  DATA:LV_TITLE TYPE LVC_TITLE.

  DESCRIBE TABLE GT_T100 LINES LV_TITLE.
  CONDENSE LV_TITLE NO-GAPS.

  CONCATENATE '结果共' LV_TITLE '条目！' INTO LV_TITLE.

  REFRESH:LT_EVENT.
  LS_EVENT-FORM = 'DATA_CHANGED_METHOD'.
  LS_EVENT-NAME = 'DATA_CHANGED'.
  APPEND LS_EVENT TO LT_EVENT.

  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
    EXPORTING
      I_CALLBACK_PROGRAM       = SY-REPID
      I_CALLBACK_PF_STATUS_SET = 'PRM_SET_STATUS'
      I_CALLBACK_USER_COMMAND  = 'PRM_USER_COMMAND'
      IS_LAYOUT_LVC            = LS_LAYOUT
      IT_FIELDCAT_LVC          = GT_FIELDCAT[]
      I_GRID_TITLE             = LV_TITLE
      IT_EVENTS                = LT_EVENT
      I_DEFAULT                = 'X'
      I_SAVE                   = 'A'
    TABLES
      T_OUTTAB                 = GT_T100
    EXCEPTIONS
      PROGRAM_ERROR            =
      OTHERS                   = .
  IF SY-SUBRC <> .
  ENDIF.
ENDFORM.
FORM PRM_SET_STATUS USING RT_EXTAB TYPE SLIS_T_EXTAB.
  SET PF-STATUS 'ZSTAT'.
  CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR'
    IMPORTING
      E_GRID = LR_GRID.

  CALL METHOD LR_GRID->REGISTER_EDIT_EVENT
    EXPORTING
      I_EVENT_ID = CL_GUI_ALV_GRID=>MC_EVT_MODIFIED.
  IF SY-SUBRC <> .
  ENDIF.
ENDFORM.
FORM PRM_USER_COMMAND USING P_UCOMM    LIKE SY-UCOMM
                        P_SELFIELD TYPE SLIS_SELFIELD.

  CHECK P_UCOMM = '&IC1'.
ENDFORM.
FORM DATA_CHANGED_METHOD
              USING PA_DATA_CHANGED TYPE REF TO CL_ALV_CHANGED_DATA_PROTOCOL .
  DATA:
    L_IT_DATA TYPE         LVC_T_MODI,
    L_WA_DATA LIKE LINE OF L_IT_DATA.
  FIELD-SYMBOLS:<LV_FIELD> TYPE ANY.

  L_IT_DATA = PA_DATA_CHANGED->MT_MOD_CELLS.

  CHECK L_IT_DATA IS NOT INITIAL.

  LOOP AT PA_DATA_CHANGED->MT_MOD_CELLS INTO L_WA_DATA.
    READ TABLE GT_T100 INTO GS_T100 INDEX L_WA_DATA-ROW_ID.
    IF SY-SUBRC = .
      ASSIGN COMPONENT L_WA_DATA-FIELDNAME OF STRUCTURE GS_T100 TO <LV_FIELD>.
      IF SY-SUBRC = .
        <LV_FIELD> = L_WA_DATA-VALUE.
        IF L_WA_DATA-FIELDNAME = 'MSGNR'.
          CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
            EXPORTING
              INPUT  = GS_T100-MSGNR
            IMPORTING
              OUTPUT = GS_T100-MSGNR.

          SELECT SINGLE TEXT INTO GS_T100-TEXT FROM T100 WHERE SPRSL = GS_T100-SPRSL AND ARBGB = GS_T100-ARBGB AND MSGNR = GS_T100-MSGNR.
        ENDIF.
        MODIFY GT_T100 FROM GS_T100 INDEX L_WA_DATA-ROW_ID.
      ENDIF.
    ENDIF.
  ENDLOOP.

  CALL METHOD LR_GRID->REFRESH_TABLE_DISPLAY.
ENDFORM.                    " DATA_CHANGED_METHOD