在方法中获取按钮工具提示

时间:2018-07-11 09:19:06

标签: sap abap webdynpro

在我的webdynpro中,当我单击一个按钮时,我不会获取该按钮的工具提示并将其用作弹出窗口的标题。

method WDDOMODIFYVIEW .
  "write view to attribute so it can be accessed from other methods.
  wd_this->DETAILVIEW = view.
endmethod.

method ONACTIONOPENDIALOG .
  data lv_title type string.
  data lv_buttonID type string.
  data lv_button type ref to if_wd_view_element.
  buttonID = wdevent->get_string( name = 'ID' ).
  button = wd_this->detailview->get_element( lv_buttonid ).

  call method cl_fitv_wd_util=>UI_GET_PROPERTY(
    exporting
      io_view = wd_this->detailview
      io_view_element = lv_button
      iv_id = buttonid
      iv_property_name = 'TOOLTIP'
      importing
      ev_value = lv_title ).

  wd_this->dopopup( title = lv_title ).
endmethod.

方法UI_GET_PROPERTY无法获得工具提示。可能是因为它试图在if_wd_view_element而不是cl_wd_button上调用GET_TOOLTIP方法。这是此方法中的错误吗? 有没有一种方法可以将if_wd_view_element转换为cl_wd_button?

1 个答案:

答案 0 :(得分:1)

可以将对if_wd_view_element的引用

向下转换为对cl_wd_uielement的引用。向按钮cl_wd_button的向下转换也适用于按钮,但对于工具栏按钮则无效。 cl_wd_uielement可能适用于所有元素。

method ONACTIONOPENDIALOG .
  data lv_title type string.
  data lv_buttonID type string.
  data lv_button type ref to if_wd_view_element.
  data lv_realbutton type ref to cl_wd_uielement.

  lv_buttonID = wdevent->get_string( name = 'ID' ).
  lv_button = wd_this->detailview->get_element( lv_buttonid ).

  "downcast view_element to uielement
  lv_realbutton ?= lv_button.
  lv_title = lv_realbutton->get_tooltip( ).

  selectbuttonrow( exporting actionevent = wdevent ).
  wd_this->dopopup( title = lv_title ).
endmethod.

我在这里找到了一篇有关垂头丧气的文章:https://help.sap.com/doc/abapdocu_750_index_htm/7.50/en-US/abapmove_cast.htm