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Не срабатывает событие handle_on_drag



 
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Katya
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Joined: 20 Oct 2011
Posts: 13

PostPosted: Tue Dec 20, 2011 10:04 am    Post subject: Не срабатывает событие handle_on_drag Reply with quote

Здравствуйте!

Я делаю перетаскивание drag and drop с ALV Tree на ALV grid.
Элемент дерева уже перетаскивается на грид, но почему то событие HANDLE_ON_DRAG не срабатвает

Code:
CLASS CL_TREE_EVENT_RECEIVER DEFINITION.

  PUBLIC SECTION.
*   double click item
    METHODS HANDLE_DOUBLE_CLICK
      FOR EVENT NODE_DOUBLE_CLICK OF cl_gui_alv_tree
      IMPORTING node_key sender.
    METHODS HANDLE_ON_DRAG
      FOR EVENT ON_DRAG OF CL_GUI_ALV_TREE
      IMPORTING DRAG_DROP_OBJECT
                FIELDNAME
                NODE_KEY.
  PRIVATE SECTION.
ENDCLASS.

CLASS CL_TREE_EVENT_RECEIVER IMPLEMENTATION.
* handle double_click
  METHOD HANDLE_DOUBLE_CLICK.
    perform select_flats using node_key.
  ENDMETHOD.
* Drag & Drop
  METHOD HANDLE_ON_DRAG.
    CHECK NOT NODE_KEY IS INITIAL.
    perform AddFlat using node_key.
    CALL METHOD CL_GUI_CFW=>SET_NEW_OK_CODE EXPORTING NEW_CODE =
    FCODE_ENTR.
  ENDMETHOD.
ENDCLASS.

В PBO пытаюсь поймать событие

if TREE_EVENT_RECEIVER is initial.
      CREATE OBJECT TREE_EVENT_RECEIVER.

        DATA: LT_EVENTS TYPE CNTL_SIMPLE_EVENTS,
          L_EVENT TYPE CNTL_SIMPLE_EVENT.
*   define the events which will be passed to the backend
    CLEAR L_EVENT.
    L_EVENT-EVENTID = CL_GUI_COLUMN_TREE=>EVENTID_NODE_DOUBLE_CLICK.
    APPEND L_EVENT TO LT_EVENTS.
    CLEAR L_EVENT.
    L_EVENT-EVENTID = CL_GUI_COLUMN_TREE=>EVENTID_EXPAND_NO_CHILDREN.
    APPEND L_EVENT TO LT_EVENTS.
    CLEAR L_EVENT.
    L_EVENT-EVENTID = CL_GUI_COLUMN_TREE=>EVENTID_HEADER_CLICK.
    APPEND L_EVENT TO LT_EVENTS.
    CLEAR L_EVENT.
*   register events
    CALL METHOD TREE1->SET_REGISTERED_EVENTS
      EXPORTING
        EVENTS = LT_EVENTS
      EXCEPTIONS
        CNTL_ERROR                = 1
        CNTL_SYSTEM_ERROR         = 2
        ILLEGAL_EVENT_COMBINATION = 3.
    IF SY-SUBRC <> 0.
      MESSAGE X534(0K).
    ENDIF.
    SET HANDLER TREE_EVENT_RECEIVER->HANDLE_ON_DRAG FOR TREE1.
    SET HANDLER TREE_EVENT_RECEIVER->HANDLE_DOUBLE_CLICK FOR TREE1.

     CALL METHOD TREE1->FRONTEND_UPDATE.
endif.


perform AddFlat using node_key не выполняется.

подскажите, пожалуйста, в чем может быть дело? Почему не работает?
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Удав
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Age: 48
Joined: 25 Jan 2008
Posts: 580
Location: Москва

PostPosted: Thu Dec 22, 2011 9:56 am    Post subject: Reply with quote

См. программу BCALV_GRID_DND_TREE_SIMPLE
_________________
С уважением,
Удав.
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Katya
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Age: 36
Joined: 20 Oct 2011
Posts: 13

PostPosted: Thu Dec 22, 2011 9:57 am    Post subject: Reply with quote

Спасибо, я ее и использовала как образец. Уже нашла почему не срабатывало событие.
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