ALV报表——单元格可编辑

使用REUSE_ALV_GRID_DISPLAY_LVC显示ALV时，如何将列、行或者具体的某个单元格设置成可编辑能输入状态？这个其实很简单，下面一一讲解：

1, 列可编辑

只要将catalog中的字段edit设置成‘X'，整列就变成能输入的了，LVC_S_FCAT-EDIT

代码：

REPORT ztest_alv_lvc_edit.

TYPES:BEGIN OF gty_ekko,
        ebeln TYPE ekko-ebeln,
        verkf TYPE ekko-verkf,
      END OF gty_ekko.
DATA:git_ekko TYPE STANDARD TABLE OF gty_ekko.
DATA:git_fcat   TYPE lvc_t_fcat,
     gwa_fcat   LIKE LINE OF git_fcat,
     gwa_layout TYPE lvc_s_layo.
DATA:l_pos TYPE i VALUE 1.

START-OF-SELECTION.

  SELECT ebeln
         verkf
    INTO TABLE git_ekko
    FROM ekko
   UP TO 10 ROWS.

  CLEAR: l_pos.
  l_pos = l_pos + 1.
  gwa_fcat-coltext   = 'PO'.
  gwa_fcat-scrtext_l = 'PO'.
  gwa_fcat-scrtext_m = 'PO'.
  gwa_fcat-scrtext_s = 'PO'.
  gwa_fcat-fieldname = 'EBELN'.
  gwa_fcat-col_pos = l_pos.
  gwa_fcat-outputlen = '10'.
  APPEND gwa_fcat TO git_fcat.
  l_pos = l_pos + 1.
  gwa_fcat-coltext   = 'PO item'.
  gwa_fcat-scrtext_l = 'PO item'.
  gwa_fcat-scrtext_m = 'PO item'.
  gwa_fcat-scrtext_s = 'PO item'.
  gwa_fcat-fieldname = 'VERKF'.
  gwa_fcat-col_pos = l_pos.
  gwa_fcat-edit = 'X'.  "设置列为可编辑状态
  gwa_fcat-outputlen = '20'.
  APPEND gwa_fcat TO git_fcat.

  gwa_layout-zebra = 'X'.
  gwa_layout-sel_mode = 'A'.
  gwa_layout-cwidth_opt = 'X'.

  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
    EXPORTING
      i_callback_program = sy-repid
      is_layout_lvc      = gwa_layout
      it_fieldcat_lvc    = git_fcat
    TABLES
      t_outtab           = git_ekko[]
    EXCEPTIONS
      program_error      = 1
      OTHERS             = 2.
  IF sy-subrc = 0.
*    BREAK-POINT.
  ENDIF.

运行结果：

2, 整个ALV可编辑

将layout中的EDIT字段赋值’X'(LVC_S_LAYO-EDIT)，就可以将整个ALV设置成可输入状态。

还有一种比较笨的办法就是将所有列都设置成可输入。

代码：

 gwa_layout-zebra = 'X'.
  gwa_layout-sel_mode = 'A'.
  gwa_layout-cwidth_opt = 'X'.
  gwa_layout-edit     = 'X'.       "将整个ALV设置成可编辑
  gwa_glay-edt_cll_cb = 'X'.
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
    EXPORTING
      i_callback_program = sy-repid
      is_layout_lvc      = gwa_layout
      it_fieldcat_lvc    = git_fcat
*      i_grid_settings    = gwa_glay
    TABLES
      t_outtab           = git_ekko[]
    EXCEPTIONS
      program_error      = 1
      OTHERS             = 2.

3, 单元格可编辑

如果要让单元格变成可输入，需要在alv输出内表中多定义一个保存单元格style的字段(类型：lvc_t_styl )，然后填入style属性(可编辑或者是不可编辑)，最后还要在layout-stylefname中指定style的字段名。

代码如下：将EBELN设置成不可输入。

TYPES:BEGIN OF gty_ekko,
        ebeln TYPE ekko-ebeln,
        verkf TYPE ekko-verkf,
        style TYPE lvc_t_styl,  "将该字段设置为保存编辑状态的字段
      END OF gty_ekko.

  gwa_edit-fieldname = 'EBELN'.
  gwa_edit-style = cl_gui_alv_grid=>mc_style_disabled."设置为不可输入
  INSERT gwa_edit INTO TABLE git_edit.

gwa_layout-stylefname = 'STYLE'. "指定保存编辑状态的字段名

style属性可以在类CL_GUI_ALV_GRID中可以找到：

MC_STYLE_DISABLED：禁止输入

MC_STYLE_ENABLED:可编辑，可输入。

需要注意的是：MC_STYLE_ENABLED输入性不能单独使用，一定在EDIT = 'X'(layout-edit 或者是catalog-edit)的场合下，才可以利用MC_STYLE_ENABLED进行不可编辑到编辑切换，也就是不设置edit = 'X',MC_STYLE_ENABLED是不起作用的。

完整代码：

REPORT ztest_alv_lvc_edit.

TYPES:BEGIN OF gty_ekko,
        ebeln TYPE ekko-ebeln,
        verkf TYPE ekko-verkf,
        style TYPE lvc_t_styl,  "设置编辑状态字段
      END OF gty_ekko.
DATA:git_ekko TYPE STANDARD TABLE OF gty_ekko,
     gwa_ekko TYPE gty_ekko.

DATA:git_fcat   TYPE lvc_t_fcat,
     gwa_fcat   LIKE LINE OF git_fcat,
     gwa_layout TYPE lvc_s_layo,
     gwa_glay   TYPE lvc_s_glay.
DATA:gwa_edit TYPE lvc_s_styl,
     git_edit TYPE lvc_t_styl.

START-OF-SELECTION.

  SELECT ebeln
         verkf
    INTO CORRESPONDING FIELDS OF TABLE git_ekko
    FROM ekko
   UP TO 10 ROWS.

  gwa_edit-fieldname = 'VERKF'.
  gwa_edit-style = cl_gui_alv_grid=>mc_style_disabled."设置为不可编辑
  INSERT gwa_edit INTO TABLE git_edit.

  INSERT LINES OF git_edit INTO TABLE gwa_ekko-style.
* 将除第三行的之外所有行的VERKF字段都设置成不能输入
  DO 10 TIMES.
    IF sy-index <> 3.
      MODIFY git_ekko INDEX sy-index FROM gwa_ekko TRANSPORTING style.
    ENDIF.
  ENDDO.

  PERFORM frm_set_catalog.

  gwa_layout-zebra = 'X'.
  gwa_layout-sel_mode = 'A'.
  gwa_layout-cwidth_opt = 'X'.
  gwa_layout-edit     = 'X'.       "将整个ALV设置成可编辑
  gwa_layout-stylefname = 'STYLE'. "指定保存编辑状态的字段名
  gwa_glay-edt_cll_cb = 'X'.
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
    EXPORTING
      i_callback_program = sy-repid
      is_layout_lvc      = gwa_layout
      it_fieldcat_lvc    = git_fcat
*      i_grid_settings    = gwa_glay
    TABLES
      t_outtab           = git_ekko[]
    EXCEPTIONS
      program_error      = 1
      OTHERS             = 2.
  IF sy-subrc = 0.

  ENDIF.
*&---------------------------------------------------------------------*
*&      Form  FRM_SET_CATALOG
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM frm_set_catalog .

  DATA:l_pos TYPE i VALUE 1.
  CLEAR: l_pos.
  l_pos = l_pos + 1.
  gwa_fcat-coltext   = 'PO'.
  gwa_fcat-scrtext_l = 'PO'.
  gwa_fcat-scrtext_m = 'PO'.
  gwa_fcat-scrtext_s = 'PO'.
  gwa_fcat-fieldname = 'EBELN'.
  gwa_fcat-col_pos = l_pos.
  gwa_fcat-outputlen = '10'.
  APPEND gwa_fcat TO git_fcat.
  l_pos = l_pos + 1.
  gwa_fcat-coltext   = 'PO item'.
  gwa_fcat-scrtext_l = 'PO item'.
  gwa_fcat-scrtext_m = 'PO item'.
  gwa_fcat-scrtext_s = 'PO item'.
  gwa_fcat-fieldname = 'VERKF'.
  gwa_fcat-edit    = 'X'. "将这列设置为可编辑
  gwa_fcat-col_pos = l_pos.
  gwa_fcat-outputlen = '20'.
  APPEND gwa_fcat TO git_fcat.

ENDFORM.

4, 行可编辑

类似于单元格可编辑，只要将一行之外的所有行都变成不可输入，也就实现了行可编辑。逻辑如下：

1，通过layout-edit = ’X' 将整个行项目都变成可输入

2，将某行之外的所有行style设置成 cl_gui_alv_grid=>mc_style_disabled.

代码：

REPORT ztest_alv_lvc_edit.

TYPES:BEGIN OF gty_ekko,
        ebeln TYPE ekko-ebeln,
        verkf TYPE ekko-verkf,
        style TYPE lvc_t_styl,  "设置编辑状态字段
      END OF gty_ekko.
DATA:git_ekko TYPE STANDARD TABLE OF gty_ekko,
     gwa_ekko TYPE gty_ekko.

DATA:git_fcat   TYPE lvc_t_fcat,
     gwa_fcat   LIKE LINE OF git_fcat,
     gwa_layout TYPE lvc_s_layo,
     gwa_glay   TYPE lvc_s_glay.
DATA:gwa_edit TYPE lvc_s_styl,
     git_edit TYPE lvc_t_styl.

START-OF-SELECTION.

  SELECT ebeln
         verkf
    INTO CORRESPONDING FIELDS OF TABLE git_ekko
    FROM ekko
   UP TO 10 ROWS.

  gwa_edit-fieldname = 'EBELN'.
  gwa_edit-style = cl_gui_alv_grid=>mc_style_disabled.
  INSERT gwa_edit INTO TABLE git_edit.

   gwa_edit-fieldname = 'VERKF'.
  gwa_edit-style = cl_gui_alv_grid=>mc_style_disabled.
  INSERT gwa_edit INTO TABLE git_edit.

  INSERT LINES OF git_edit INTO TABLE gwa_ekko-style.
* 将除第三行之外的所有行都设置成不能输入
  DO 10 TIMES.
    IF sy-index <> 3.
      MODIFY git_ekko INDEX sy-index FROM gwa_ekko TRANSPORTING style.
    ENDIF.
  ENDDO.

  PERFORM frm_set_catalog.

  gwa_layout-zebra = 'X'.
  gwa_layout-sel_mode = 'A'.
  gwa_layout-cwidth_opt = 'X'.
  gwa_layout-edit     = 'X'.       "将整个ALV设置成可编辑
  gwa_layout-stylefname = 'STYLE'. "指定保存编辑状态的字段名
  gwa_glay-edt_cll_cb = 'X'.
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY_LVC'
    EXPORTING
      i_callback_program = sy-repid
      is_layout_lvc      = gwa_layout
      it_fieldcat_lvc    = git_fcat
*      i_grid_settings    = gwa_glay
    TABLES
      t_outtab           = git_ekko[]
    EXCEPTIONS
      program_error      = 1
      OTHERS             = 2.
  IF sy-subrc = 0.

  ENDIF.
*&---------------------------------------------------------------------*
*&      Form  FRM_SET_CATALOG
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM frm_set_catalog .

  DATA:l_pos TYPE i VALUE 1.
  CLEAR: l_pos.
  l_pos = l_pos + 1.
  gwa_fcat-coltext   = 'PO'.
  gwa_fcat-scrtext_l = 'PO'.
  gwa_fcat-scrtext_m = 'PO'.
  gwa_fcat-scrtext_s = 'PO'.
  gwa_fcat-fieldname = 'EBELN'.
  gwa_fcat-col_pos = l_pos.
  gwa_fcat-outputlen = '10'.
  APPEND gwa_fcat TO git_fcat.
  l_pos = l_pos + 1.
  gwa_fcat-coltext   = 'PO item'.
  gwa_fcat-scrtext_l = 'PO item'.
  gwa_fcat-scrtext_m = 'PO item'.
  gwa_fcat-scrtext_s = 'PO item'.
  gwa_fcat-fieldname = 'VERKF'.
  gwa_fcat-col_pos = l_pos.
  gwa_fcat-outputlen = '20'.
  APPEND gwa_fcat TO git_fcat.

ENDFORM.

显示：

以上。