Schlagwort: AT SELECTION-SCREEN

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*
* Datentypen, Variablen, Konstanten
*
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TYPES: ty_it_events TYPE STANDARD TABLE OF cntl_simple_event WITH DEFAULT KEY.
TYPES: ty_it_nodes TYPE STANDARD TABLE OF mtreesnode WITH DEFAULT KEY.

DATA: o_splitter_main TYPE REF TO cl_gui_splitter_container.
DATA: o_container_l   TYPE REF TO cl_gui_container.
DATA: o_container_r   TYPE REF TO cl_gui_container.
DATA: o_tree TYPE REF TO cl_gui_simple_tree.
DATA: o_salv TYPE REF TO cl_salv_table.

DATA: it_tree_spfli TYPE STANDARD TABLE OF spfli.
DATA: it_salv_spfli TYPE STANDARD TABLE OF spfli.
DATA: it_nodes TYPE ty_it_nodes.
**********************************************************************
*
* Eventhandler
*
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CLASS lcl_events DEFINITION.
  PUBLIC SECTION.
    CLASS-METHODS: on_selection_changed FOR EVENT selection_changed OF cl_gui_simple_tree
      IMPORTING
          node_key
          sender.
ENDCLASS.

CLASS lcl_events IMPLEMENTATION.
* Klick auf ein aktives Baumelement
  METHOD on_selection_changed.
    IF o_salv IS BOUND.
* Element in der Nodes-Tabelle lesen
      ASSIGN it_nodes[ node_key = node_key ] TO FIELD-SYMBOL(<fs_node>).

* iTab für SALV-Table neu aufbauen, abhängig vom gewählten Baumelement
      it_salv_spfli = VALUE #( FOR l IN it_tree_spfli WHERE ( carrid = <fs_node>-text )
                               ( mandt = l-mandt
                                 carrid = l-carrid
                                 connid = l-connid
                                 countryfr = l-countryfr
                                 cityfrom = l-cityfrom
                                 airpfrom = l-airpfrom
                                 countryto = l-countryto
                                 cityto = l-cityto
                                 airpto = l-airpto
                                 fltime = l-fltime
                                 deptime = l-deptime
                                 arrtime = l-arrtime
                                 distance = l-distance
                                 distid = l-distid
                                 fltype = l-fltype
                                 period = l-period ) ).

* SALV-Table neu anzeigen
      o_salv->refresh( ).
    ENDIF.
  ENDMETHOD.
ENDCLASS.
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*
* SELECTION-SCREEN
*
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* leeres Selektionsbild als Dummy für die Container-Objekte (o_splitter_main ...)
SELECTION-SCREEN BEGIN OF SCREEN 2000.
SELECTION-SCREEN END OF SCREEN 2000.
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*
* INITIALIZATION
*
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INITIALIZATION.
  SELECT * INTO TABLE it_tree_spfli FROM spfli.
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*
* START-OF-SELECTION
*
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START-OF-SELECTION.
* leeres Selektionbild 2000 anzeigen
  CALL SELECTION-SCREEN 2000.
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*
* AT SELECTION-SCREEN OUTPUT
*
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AT SELECTION-SCREEN OUTPUT.
* Doppelte Objekterzeugung unterbinden
  IF NOT o_splitter_main IS BOUND.
* Splitter auf default_screen (SELECTION-SCREEN 2000) erzeugen
    o_splitter_main = NEW #( parent  = cl_gui_container=>default_screen
                             rows    = 1
                             columns = 2 ).

* Breite in % (linke Spalte für den Tree)
    o_splitter_main->set_column_width( id = 1 width = 15 ).

* linken und rechten Splitcontainer holen
    o_container_l = o_splitter_main->get_container( row = 1 column = 1 ).
    o_container_r = o_splitter_main->get_container( row = 1 column = 2 ).

* Tree-Objekt erzeugen
    o_tree = NEW #( parent = o_container_l
                    node_selection_mode = cl_gui_simple_tree=>node_sel_mode_single ).

* Eventtypten müssen gesondert registriert werden
    DATA(it_events) = VALUE ty_it_events( ( eventid = cl_gui_simple_tree=>eventid_selection_changed
                                            appl_event = abap_true ) ).

    o_tree->set_registered_events( events = it_events ).

    SET HANDLER lcl_events=>on_selection_changed FOR o_tree.

* Root-Node einfügen
    it_nodes = VALUE #( ( node_key  = 'ROOT'           " Node-Bezeichner
                          relatship = cl_gui_simple_tree=>relat_last_child
                          disabled  = abap_true
                          isfolder  = abap_true        " Typ Ordner für Root-Element
                          n_image   = icon_folder      " Icon Ordner
                          exp_image = icon_open_folder " Icon geöffneter Ordner
                          style     = cl_gui_simple_tree=>style_default
                          text      = 'Airlines' ) ).

* Childs an Root-Node anhängen
    LOOP AT it_tree_spfli ASSIGNING FIELD-SYMBOL(<fs_line>).
* bei Änderung der carrid neue carrid als Child anhängen
      AT NEW carrid.
        APPEND VALUE #( node_key  = |NODE{ sy-tabix }| " Node-Bezeichner
                        relatship = cl_gui_simple_tree=>relat_last_child
                        relatkey  = 'ROOT'             " an ROOT-Element anhängen
                        style     = cl_gui_simple_tree=>style_intensified
                        text      = |{ <fs_line>-carrid }| ) TO it_nodes.
      ENDAT.
    ENDLOOP.

* Nodes im Baum einfügen
    o_tree->add_nodes( table_structure_name = 'MTREESNODE' " Typ muss gleich mit Zeilentyp von ty_it_nodes sein
                       node_table           = it_nodes ).

* Root-Nodes des Trees expandieren
    o_tree->expand_root_nodes( ).

* leeres SALV-Grid erzeugen
    cl_salv_table=>factory( EXPORTING
                              r_container    = o_container_r
                            IMPORTING
                              r_salv_table   = o_salv
                            CHANGING
                              t_table        = it_salv_spfli ).

    o_salv->get_display_settings( )->set_striped_pattern( abap_true ).
    o_salv->get_columns( )->set_optimize( abap_true ).
    o_salv->get_functions( )->set_all( ).
    o_salv->get_selections( )->set_selection_mode( if_salv_c_selection_mode=>row_column ).
    o_salv->display( ).
  ENDIF.
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*
* AT SELECTION-SCREEN
*
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AT SELECTION-SCREEN.
* wenn "Ausführen" (F8) geklickt wurde
  IF sy-ucomm = 'CRET'.
* Selektionbild 2000 wieder anzeigen
    CALL SELECTION-SCREEN 2000.
  ENDIF.