进阶：案例六: Context Menu(静态 与 动态)

实现：

1、add：

2、delete

3、add2

实现步骤：

1、新建属性display_text

2、创建layout

3、代码部分：

add事件：

METHOD onactionadd .

  DATA: ls_disp TYPE string.

  wd_context->get_attribute(

   EXPORTING name = 'DISPLAY_TEXT'

     IMPORTING value = ls_disp ).

  CONCATENATE ls_disp 'Action1' into ls_disp.

  wd_Context->SET_ATTRIBUTE( name = 'DISPLAY_TEXT' value = ls_disp ).

ENDMETHOD.

add2事件：

method ONACTIONADD2 .

  data: ls_disp type string.

  wd_Context->get_attribute(

  EXPORTING name = 'DISPLAY_TEXT'

    IMPORTING value = ls_disp ).

  CONCATENATE ls_disp 'Action2' into ls_disp.

  wd_Context->SET_ATTRIBUTE( name = 'DISPLAY_TEXT' value = ls_disp ).

endmethod.

delete事件：

method ONACTIONDELETE .

  data: ls_disp type string.

  wd_Context->SET_ATTRIBUTE( name = 'DISPLAY_TEXT' value = space ).

endmethod.

方法WDDOONCONTEXTMENU好像没起作用

method WDDOONCONTEXTMENU .

  DATA: ls_id type string,

        lo_menu type REF TO cl_wd_menu,

        lo_menu_item type REF TO cl_wd_menu_action_item.

* get the UI element ID

  ls_id = CONTEXT_MENU_EVENT->originator->id.

* if it is the 1st UI,then assign the Cotext Menu statically

  IF ls_id = 'TEXT'.

    MENU = CONTEXT_MENU_MANAGER->get_context_menu( 'ACTION' ).

    ENDIF.

* if it is the 2nd UI,then assign the Cotext Menu programly

    IF ls_id = 'TEXT2'.

**runtime object

      lo_menu = cl_wd_menu=>new_menu( id = 'ACTION2' ).

**menu itme

      lo_menu_item = cl_wd_menu_action_item=>new_menu_action_item(

      id = 'ADD2'

      on_action = 'ADD2'

      text = 'Action2-Add2' ).

**add this item to menu

      lo_menu->add_item( lo_menu_item ).

**menu itme

      lo_menu_item = cl_wd_menu_action_item=>new_menu_action_item(

      id = 'DELETE2'

      on_action = 'DELETE'

      text = 'Action2-DELETE2' ).

**add this item to menu

      lo_menu->add_item( lo_menu_item ).

**return the menu

      MENU = lo_menu.

      ENDIF.

endmethod.