sw a11y: Drop special event handling for single selected shape

If shape selecion changed, just send the same
`AccessibleEventId::SELECTION_CHANGED_ADD` event(s)
regardless of whether only a single or multiple shapes
are selected.

This unifies the handling and also prepares for sending the
event with the correct source and `NewValue` set.

The `AccessibleEventId::SELECTION_CHANGED` doc doesn't
expclicitly mention whether the source should be the
selection container (i.e. the parent, which is the doc view
in the case here) or the selected object, and this is
currently handled inconsistently across the codebase.
I tend to think that this event should have the
container as the source (just as for the
`AccessibleEventId::SELECTION_CHANGED_ADD` case,
that will be fixed in an upcoming commit), and this
is at least what the handling e.g. in the gtk3 a11y
bridge assumes (s. `AtkListener::notifyEvent`), but
there seems to be no added value in handling the
case of a single selected shape specially here in the
first place.

This may have been inspired by the MSAA/IAccessible
equivalent, `EVENT_OBJECT_SELECTION` [1]:

> The selection within a container object has changed. (...) This event
> signals a single selection: either a child is selected in a container
> that previously did not contain any selected children, or the selection
> has changed from one child to another.

But then, the selection taking place here might also be from
multiple objects being selected to just a single one, and
`SELECTION_CHANGED_REMOVE` is sent for any previously selected
but now unselected shape anyway, so using
`AccessibleEventId::SELECTION_CHANGED_ADD` seems more
consistent to me anyway.

[1] https://learn.microsoft.com/en-us/windows/win32/winauto/event-constants

Change-Id: I1525ed27434bbbb4cf181df2148669c7bc6850b9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/162518
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

1 files changed, 1 insertions, 8 deletions

diff --git a/sw/source/core/access/accmap.cxx b/sw/source/core/access/accmap.cxx
index 38c9233ec018..bb0f209bb049 100644
--- a/sw/source/core/access/accmap.cxx
+++ b/sw/source/core/access/accmap.cxx
@@ -1495,7 +1495,6 @@ void SwAccessibleMap::DoInvalidateShapeSelection(bool bInvalidateFocusMode /*=fa
 
     std::vector<::rtl::Reference<::accessibility::AccessibleShape>> vecxShapeAdd;
     std::vector<::rtl::Reference<::accessibility::AccessibleShape>> vecxShapeRemove;
-    int nCountSelectedShape=0;
 
     vcl::Window *pWin = GetShell()->GetWin();
     bool bFocused = pWin && pWin->HasFocus();
@@ -1545,7 +1544,6 @@ void SwAccessibleMap::DoInvalidateShapeSelection(bool bInvalidateFocusMode /*=fa
                 {
                     vecxShapeAdd.push_back(pShape->second);
                 }
-                ++nCountSelectedShape;
             }
         }
 
@@ -1564,17 +1562,12 @@ void SwAccessibleMap::DoInvalidateShapeSelection(bool bInvalidateFocusMode /*=fa
     }
     else
     {
-        short nEventID = AccessibleEventId::SELECTION_CHANGED_ADD;
-        if (nCountSelectedShape <= 1 && vecxShapeAdd.size() == 1 )
-        {
-            nEventID = AccessibleEventId::SELECTION_CHANGED;
-        }
         for (const auto& rpShape : vecxShapeAdd)
         {
             ::accessibility::AccessibleShape *pAccShape = rpShape.get();
             if (pAccShape)
             {
-                pAccShape->CommitChange(nEventID, uno::Any(), uno::Any(), -1);
+                pAccShape->CommitChange(AccessibleEventId::SELECTION_CHANGED_ADD, uno::Any(), uno::Any(), -1);
             }
         }
     }