This interface gives access to the three Header/Footer areas in the
page preview.
The parent returned by ::getAccessibleParent
is the accessible spreadsheet page preview.
The children returned by ::getAccessibleChild all
support the interface XAccessible. Calling
::getAccessibleContext for these children returns
an object that supports one of the following services.
::com.sun.star.text.AccessibleHeaderFooterView :
A child where calling ::getAccessibleChild
an object that supports this service is returned for
every header and footer that is at least partially visible.
The following rules apply to the children order.
The first is the left area, than the centre area and the last
is the right area.
The description is ???.
The name is Header/Footer.
The role is ::HEADER/FOOTER
There are no relations.
The following states are supported:
::DEFUNC is always false until the preview is
closed.
::EDITABLE is always false, because the document
is not editable in the page preview. So it is left out of
the list.
::ENABLED is always true.
::MULTILINE makes no sense on a document and so
it is left out of the list.
::MULTISELECTABLE is always false, because in a
page preview a selection is not possible. So it is left out
of the list.
::OPAQUE is always true.
::RESIZEABLE is always false, because you can
resize the window of the page preview, but not the page
preview itself. So it is left out of the list.
::SELECTABLE is always false, because in the
page preview is no selection possible. So it is left out of
the list.
::SELECTED is always false, because in the
page preview is no selection possible. So it is left out of
the list.
::SHOWING Is true if the Bounding Box lies in
the Bounding Box of the parent. Otherwise it is false.
