Drop Files in ALV-Grid

Posted on by Enno Wulff

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drag files in grid

Seit etwa 2012 ist es möglich, Dateien aus dem Explorer in ein ALV-Grid zu ziehen und die Namen dort zu verarbeiten (SAP Note 1748468). Ob das in deinem SAP-System bereits funktioniert, kannst du daran erkennen, dass die Klasse CL_GUI_ALV_GRID die Methode GET_DROPPED_EXTERNAL_FILES hat.

Das Event DROP_EXTERNAL_FILES muss registriert werden und mit der Methode DRAG_ACCEPT_FILES( 1 ) muss die Funktionalität aktiviert werden.

Es kann das gesamte ALV-Grid-Control als “Ablagefläche” genutzt werden, also auch dort, wo keine Zeilen vorhanden sind. Werden die Dateien auf einer Zelle abgelegt, dann kann diese Zelle bestimmte werden. In dem Beispielcoding werden die Dateien der Spalte hinzugefügt, auf der sie abgelegt wurden.

Coding

REPORT zz_drop_files_on_grid.

*----------------------------------------------------------------------*
*       CLASS lcl_appl DEFINITION
*----------------------------------------------------------------------*
CLASS lcl_appl DEFINITION.

  PUBLIC SECTION.

*== type for Grid-Demonstration: Columns EINS, ZWEI and DREI
    TYPES: BEGIN OF ty_files,
             eins TYPE string,
             zwei TYPE string,
             drei TYPE string,
           END OF ty_files.

*== table containing the data (text/ files)
    CLASS-DATA gt_data TYPE STANDARD TABLE OF ty_files.
*== ALV-Grid
    CLASS-DATA gr_grid TYPE REF TO cl_gui_alv_grid.

*== setup ALV-Grid
    CLASS-METHODS init.
*== get dropped files and display in grid
    CLASS-METHODS get_dropped_files FOR EVENT drop_external_files OF cl_gui_alv_grid
                                    IMPORTING files.

ENDCLASS.                    "lcl_appl DEFINITION

*----------------------------------------------------------------------*
*       CLASS lcl_appl IMPLEMENTATION
*----------------------------------------------------------------------*
CLASS lcl_appl IMPLEMENTATION.

  METHOD init.

*== local data
    DATA lt_fcat         TYPE lvc_t_fcat.
    FIELD-SYMBOLS <fcat> LIKE LINE OF lt_fcat.
    FIELD-SYMBOLS <data> LIKE LINE OF gt_data.

    CHECK gr_grid IS INITIAL.

*== set initial data
    DO 5 TIMES.
      APPEND INITIAL LINE TO gt_data ASSIGNING <data>.
      <data>-eins = 'Drop'.
      <data>-zwei = 'Files'.
      <data>-drei = 'Here'.
    ENDDO.

*== Create Grid-control
    CREATE OBJECT gr_grid
      EXPORTING
        i_parent = cl_gui_container=>screen0.

*== build field catalog
    APPEND INITIAL LINE TO lt_fcat ASSIGNING <fcat>.
    <fcat>-fieldname = 'EINS'.
    <fcat>-reptext   = 'Eins'.
    <fcat>-style     = 1.
    <fcat>-datatype  = 'STRG'.
    APPEND INITIAL LINE TO lt_fcat ASSIGNING <fcat>.
    <fcat>-fieldname = 'ZWEI'.
    <fcat>-reptext   = 'Zwei'.
    <fcat>-style     = 2.
    <fcat>-datatype  = 'STRG'.
    APPEND INITIAL LINE TO lt_fcat ASSIGNING <fcat>.
    <fcat>-fieldname = 'DREI'.
    <fcat>-reptext   = 'Drei'.
    <fcat>-style     = 4.
    <fcat>-datatype  = 'STRG'.

*== display grid
    gr_grid->set_table_for_first_display(
      CHANGING it_fieldcatalog = lt_fcat
               it_outtab       = gt_data ).

*== Allow drop files action
    gr_grid->drag_accept_files( 1 ).

*== set handler to react on file drop
    SET HANDLER get_dropped_files FOR gr_grid ACTIVATION abap_true.

  ENDMETHOD.                                               "init

  METHOD get_dropped_files.

*== local data
    DATA lt_files        TYPE filetable.
    FIELD-SYMBOLS <file> LIKE LINE OF lt_files.
    DATA lv_row_id       TYPE i.
    DATA lv_col_id       TYPE i.
    FIELD-SYMBOLS <data> LIKE LINE OF gt_data.

*== get dropped files in a table
    gr_grid->get_dropped_external_files(
       IMPORTING  files     = lt_files
                  row_id    = lv_row_id
                  col_id    = lv_col_id
       EXCEPTIONS OTHERS    = 3 ).

*== put file names in grid
    IF lt_files IS NOT INITIAL.
      CLEAR gt_data.
      LOOP AT lt_files ASSIGNING <file>.
        APPEND INITIAL LINE TO gt_data ASSIGNING <data>.
        CASE lv_col_id.
          WHEN 1. <data>-eins = <file>.
          WHEN 2. <data>-zwei = <file>.
          WHEN 3. <data>-drei = <file>.
        ENDCASE.
      ENDLOOP.
*== refresh display
      gr_grid->refresh_table_display( ).
    ENDIF.

  ENDMETHOD.                                               "get_dropped_files

ENDCLASS.                                                  "lcl_appl IMPLEMENTATION

START-OF-SELECTION.

START-OF-SELECTION.
  WRITE 'nothign to see here...!'.
  lcl_appl=>init( ).
Enno Wulff
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