如果输入不正确,如何禁用可编辑的 ALV 网格?
How to disable the Editable ALV Grid in case of an incorrect entry?
每当在 ALV 网格中输入无效值时,如何禁用网格中的其他字段(灰色)并强制用户修复不正确的字段。
我尝试在 DATA_CHANGED 事件中添加协议。但协议列表仅在弹出窗口中显示错误。仍然可以进行编辑,并且没有禁用任何字段。
但是如何禁用其他字段。示例行为如下所示:
此处,其他字段显示为灰色,无效条目突出显示。在用户修复此错误之前,he/she 无法继续。
屏幕 100 和容器 CCONTAINER1 粘贴此代码段
CLASS zcl_alv_test DEFINITION.
PUBLIC SECTION.
METHODS: constructor, display_grid, populate_grid.
DATA: lr_rtti_struc TYPE REF TO cl_abap_structdescr,
it_fldcat TYPE lvc_t_fcat,
grid_container1 TYPE REF TO cl_gui_custom_container,
grid1 TYPE REF TO cl_gui_alv_grid.
DATA: BEGIN OF gs_outtab.
INCLUDE TYPE spfli.
DATA: celltab TYPE lvc_t_styl.
DATA: END OF gs_outtab.
DATA gt_outtab1 LIKE TABLE OF gs_outtab INITIAL SIZE 0.
METHODS:
handle_data_changed FOR EVENT data_changed OF cl_gui_alv_grid IMPORTING er_data_changed,
handle_data_changed_finished FOR EVENT data_changed_finished OF cl_gui_alv_grid IMPORTING e_modified et_good_cells,
create_dynamic_fcat.
PRIVATE SECTION.
TYPES: ty_tab LIKE LINE OF gt_outtab1.
METHODS: refresh_grid, fill_celltab IMPORTING p_fieldname TYPE lvc_fname
CHANGING pt_celltab TYPE lvc_t_styl.
ENDCLASS.
CLASS zcl_alv_test IMPLEMENTATION.
METHOD constructor.
CREATE OBJECT grid_container1 EXPORTING container_name = 'CCONTAINER1'.
CREATE OBJECT grid1 EXPORTING i_parent = grid_container1.
SET HANDLER handle_data_changed FOR grid1.
SET HANDLER handle_data_changed_finished FOR grid1.
CALL METHOD grid1->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_enter.
ENDMETHOD. "constructor
METHOD fill_celltab.
LOOP AT pt_celltab ASSIGNING FIELD-SYMBOL(<fs_fcat>).
IF <fs_fcat>-fieldname = p_fieldname.
<fs_fcat>-style = cl_gui_alv_grid=>mc_style_enabled.
ENDIF.
ENDLOOP.
ENDMETHOD.
METHOD handle_data_changed.
DATA: lt_celltab TYPE lvc_t_styl.
LOOP AT it_fldcat ASSIGNING FIELD-SYMBOL(<fs_fcat>).
INSERT VALUE lvc_s_styl( style = cl_gui_alv_grid=>mc_style_disabled fieldname = <fs_fcat>-fieldname ) INTO TABLE lt_celltab.
ENDLOOP.
MODIFY gt_outtab1 FROM VALUE ty_tab( celltab = lt_celltab ) TRANSPORTING celltab WHERE connid IS NOT INITIAL.
LOOP AT er_data_changed->mt_mod_cells ASSIGNING FIELD-SYMBOL(<mods>).
READ TABLE gt_outtab1 ASSIGNING FIELD-SYMBOL(<sym>) INDEX <mods>-row_id.
fill_celltab( EXPORTING p_fieldname = <mods>-fieldname
CHANGING pt_celltab = <sym>-celltab ).
MODIFY gt_outtab1 FROM <sym> INDEX <mods>-row_id.
ENDLOOP.
refresh_grid( ).
ENDMETHOD.
METHOD handle_data_changed_finished.
DATA: lt_celltab TYPE lvc_t_styl.
LOOP AT it_fldcat ASSIGNING FIELD-SYMBOL(<fs_fcat>).
IF sy-tabix MOD 2 = 0.
DATA(style) = cl_gui_alv_grid=>mc_style_disabled.
ELSE.
style = cl_gui_alv_grid=>mc_style_enabled.
ENDIF.
INSERT VALUE lvc_s_styl( style = style fieldname = <fs_fcat>-fieldname ) INTO TABLE lt_celltab.
ENDLOOP.
MODIFY gt_outtab1 FROM VALUE ty_tab( celltab = lt_celltab ) TRANSPORTING celltab WHERE connid IS NOT INITIAL.
refresh_grid( ).
ENDMETHOD.
METHOD create_dynamic_fcat.
lr_rtti_struc ?= cl_abap_structdescr=>describe_by_name( 'SPFLI' ).
DATA(comps) = lr_rtti_struc->components.
LOOP AT comps ASSIGNING FIELD-SYMBOL(<comps>).
IF sy-tabix MOD 2 = 0.
DATA(edit) = abap_false.
ELSE.
edit = abap_true.
ENDIF.
APPEND VALUE lvc_s_fcat( edit = edit fieldname = <comps>-name datatype = <comps>-type_kind inttype = <comps>-type_kind intlen = <comps>-length decimals = <comps>-decimals coltext = <comps>-name lowercase = 'X' ) TO it_fldcat .
ENDLOOP.
ENDMETHOD. "create_dynamic_fcat
METHOD populate_grid.
SELECT * UP TO 1000 ROWS
FROM spfli
INTO CORRESPONDING FIELDS OF TABLE gt_outtab1.
ENDMETHOD. "CHANGE_TITLE
METHOD display_grid.
create_dynamic_fcat( ).
grid1->set_table_for_first_display(
EXPORTING
is_layout = VALUE lvc_s_layo( zebra = abap_true stylefname = 'CELLTAB' )
CHANGING
it_outtab = gt_outtab1
it_fieldcatalog = it_fldcat ).
ENDMETHOD. "display_grid
METHOD refresh_grid.
cl_gui_cfw=>flush( ).
grid1->refresh_table_display( ).
ENDMETHOD.
ENDCLASS.
MODULE status_0100 OUTPUT.
SET PF-STATUS 'MAIN100'.
DATA: yalv TYPE REF TO zcl_alv_test.
CREATE OBJECT yalv.
yalv->populate_grid( ).
yalv->display_grid( ).
ENDMODULE.
MODULE user_command_0100 INPUT.
CASE sy-ucomm.
WHEN 'BACK' OR 'EXIT' OR 'RETURN'.
LEAVE PROGRAM.
WHEN OTHERS.
ENDCASE.
ENDMODULE.
START-OF-SELECTION.
CALL SCREEN 100.
它使用了 cell styles 的概念,其中 table 中的每一行都为该行中的每一列分配了 table 样式。您可以在单元格级别应用条件属性,包括可编辑性。
当通过内置 checktables/domains 抛出错误时,除了错误的单元格外,网格不是 editable,并且在更正错误时,可编辑性 returns.
每当在 ALV 网格中输入无效值时,如何禁用网格中的其他字段(灰色)并强制用户修复不正确的字段。
我尝试在 DATA_CHANGED 事件中添加协议。但协议列表仅在弹出窗口中显示错误。仍然可以进行编辑,并且没有禁用任何字段。
但是如何禁用其他字段。示例行为如下所示:
此处,其他字段显示为灰色,无效条目突出显示。在用户修复此错误之前,he/she 无法继续。
屏幕 100 和容器 CCONTAINER1 粘贴此代码段
CLASS zcl_alv_test DEFINITION.
PUBLIC SECTION.
METHODS: constructor, display_grid, populate_grid.
DATA: lr_rtti_struc TYPE REF TO cl_abap_structdescr,
it_fldcat TYPE lvc_t_fcat,
grid_container1 TYPE REF TO cl_gui_custom_container,
grid1 TYPE REF TO cl_gui_alv_grid.
DATA: BEGIN OF gs_outtab.
INCLUDE TYPE spfli.
DATA: celltab TYPE lvc_t_styl.
DATA: END OF gs_outtab.
DATA gt_outtab1 LIKE TABLE OF gs_outtab INITIAL SIZE 0.
METHODS:
handle_data_changed FOR EVENT data_changed OF cl_gui_alv_grid IMPORTING er_data_changed,
handle_data_changed_finished FOR EVENT data_changed_finished OF cl_gui_alv_grid IMPORTING e_modified et_good_cells,
create_dynamic_fcat.
PRIVATE SECTION.
TYPES: ty_tab LIKE LINE OF gt_outtab1.
METHODS: refresh_grid, fill_celltab IMPORTING p_fieldname TYPE lvc_fname
CHANGING pt_celltab TYPE lvc_t_styl.
ENDCLASS.
CLASS zcl_alv_test IMPLEMENTATION.
METHOD constructor.
CREATE OBJECT grid_container1 EXPORTING container_name = 'CCONTAINER1'.
CREATE OBJECT grid1 EXPORTING i_parent = grid_container1.
SET HANDLER handle_data_changed FOR grid1.
SET HANDLER handle_data_changed_finished FOR grid1.
CALL METHOD grid1->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_enter.
ENDMETHOD. "constructor
METHOD fill_celltab.
LOOP AT pt_celltab ASSIGNING FIELD-SYMBOL(<fs_fcat>).
IF <fs_fcat>-fieldname = p_fieldname.
<fs_fcat>-style = cl_gui_alv_grid=>mc_style_enabled.
ENDIF.
ENDLOOP.
ENDMETHOD.
METHOD handle_data_changed.
DATA: lt_celltab TYPE lvc_t_styl.
LOOP AT it_fldcat ASSIGNING FIELD-SYMBOL(<fs_fcat>).
INSERT VALUE lvc_s_styl( style = cl_gui_alv_grid=>mc_style_disabled fieldname = <fs_fcat>-fieldname ) INTO TABLE lt_celltab.
ENDLOOP.
MODIFY gt_outtab1 FROM VALUE ty_tab( celltab = lt_celltab ) TRANSPORTING celltab WHERE connid IS NOT INITIAL.
LOOP AT er_data_changed->mt_mod_cells ASSIGNING FIELD-SYMBOL(<mods>).
READ TABLE gt_outtab1 ASSIGNING FIELD-SYMBOL(<sym>) INDEX <mods>-row_id.
fill_celltab( EXPORTING p_fieldname = <mods>-fieldname
CHANGING pt_celltab = <sym>-celltab ).
MODIFY gt_outtab1 FROM <sym> INDEX <mods>-row_id.
ENDLOOP.
refresh_grid( ).
ENDMETHOD.
METHOD handle_data_changed_finished.
DATA: lt_celltab TYPE lvc_t_styl.
LOOP AT it_fldcat ASSIGNING FIELD-SYMBOL(<fs_fcat>).
IF sy-tabix MOD 2 = 0.
DATA(style) = cl_gui_alv_grid=>mc_style_disabled.
ELSE.
style = cl_gui_alv_grid=>mc_style_enabled.
ENDIF.
INSERT VALUE lvc_s_styl( style = style fieldname = <fs_fcat>-fieldname ) INTO TABLE lt_celltab.
ENDLOOP.
MODIFY gt_outtab1 FROM VALUE ty_tab( celltab = lt_celltab ) TRANSPORTING celltab WHERE connid IS NOT INITIAL.
refresh_grid( ).
ENDMETHOD.
METHOD create_dynamic_fcat.
lr_rtti_struc ?= cl_abap_structdescr=>describe_by_name( 'SPFLI' ).
DATA(comps) = lr_rtti_struc->components.
LOOP AT comps ASSIGNING FIELD-SYMBOL(<comps>).
IF sy-tabix MOD 2 = 0.
DATA(edit) = abap_false.
ELSE.
edit = abap_true.
ENDIF.
APPEND VALUE lvc_s_fcat( edit = edit fieldname = <comps>-name datatype = <comps>-type_kind inttype = <comps>-type_kind intlen = <comps>-length decimals = <comps>-decimals coltext = <comps>-name lowercase = 'X' ) TO it_fldcat .
ENDLOOP.
ENDMETHOD. "create_dynamic_fcat
METHOD populate_grid.
SELECT * UP TO 1000 ROWS
FROM spfli
INTO CORRESPONDING FIELDS OF TABLE gt_outtab1.
ENDMETHOD. "CHANGE_TITLE
METHOD display_grid.
create_dynamic_fcat( ).
grid1->set_table_for_first_display(
EXPORTING
is_layout = VALUE lvc_s_layo( zebra = abap_true stylefname = 'CELLTAB' )
CHANGING
it_outtab = gt_outtab1
it_fieldcatalog = it_fldcat ).
ENDMETHOD. "display_grid
METHOD refresh_grid.
cl_gui_cfw=>flush( ).
grid1->refresh_table_display( ).
ENDMETHOD.
ENDCLASS.
MODULE status_0100 OUTPUT.
SET PF-STATUS 'MAIN100'.
DATA: yalv TYPE REF TO zcl_alv_test.
CREATE OBJECT yalv.
yalv->populate_grid( ).
yalv->display_grid( ).
ENDMODULE.
MODULE user_command_0100 INPUT.
CASE sy-ucomm.
WHEN 'BACK' OR 'EXIT' OR 'RETURN'.
LEAVE PROGRAM.
WHEN OTHERS.
ENDCASE.
ENDMODULE.
START-OF-SELECTION.
CALL SCREEN 100.
它使用了 cell styles 的概念,其中 table 中的每一行都为该行中的每一列分配了 table 样式。您可以在单元格级别应用条件属性,包括可编辑性。
当通过内置 checktables/domains 抛出错误时,除了错误的单元格外,网格不是 editable,并且在更正错误时,可编辑性 returns.