Related: tdf#105712 inconsistency with num of a11y children in special char

with no visible scrollbar it claims 1 child, but trying to get child at
index 0 throws

(cherry picked from commit b3098d239f46c8d5965754f275bc62216dcb4f4f)

Change-Id: Icf1a0afc4a6f6090e3f14f30b4380db477955561
Reviewed-on: https://gerrit.libreoffice.org/34313
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>

2 files changed, 19 insertions, 11 deletions

diff --git a/svx/source/accessibility/charmapacc.cxx b/svx/source/accessibility/charmapacc.cxx
index 97f523c5b552..f7c31bfced4d 100644
--- a/svx/source/accessibility/charmapacc.cxx
+++ b/svx/source/accessibility/charmapacc.cxx
@@ -71,11 +71,16 @@ void SAL_CALL SvxShowCharSetVirtualAcc::fireEvent(
         m_pTable->fireEvent(_nEventId,_rOldValue,_rNewValue);
 }
 
-sal_Int32 SAL_CALL SvxShowCharSetVirtualAcc::getAccessibleChildCount(  ) throw (RuntimeException, std::exception)
+sal_Int32 SvxShowCharSetVirtualAcc::getImplAccessibleChildCount() const
+{
+    return mpParent->getScrollBar().IsVisible() ? 2 : 1;
+}
+
+sal_Int32 SAL_CALL SvxShowCharSetVirtualAcc::getAccessibleChildCount() throw (RuntimeException, std::exception)
 {
     OExternalLockGuard aGuard( this );
     ensureAlive();
-    return ( mpParent->getScrollBar().IsVisible() ) ? 2 : 1;
+    return getImplAccessibleChildCount();
 }
 
 uno::Reference< css::accessibility::XAccessible > SAL_CALL SvxShowCharSetVirtualAcc::getAccessibleAtPoint( const awt::Point& aPoint )
@@ -117,18 +122,20 @@ Reference< XAccessible > SAL_CALL SvxShowCharSetVirtualAcc::getAccessibleChild(
 {
     OExternalLockGuard aGuard( this );
     ensureAlive();
-    if ( mpParent->getScrollBar().IsVisible() && i == 0 )
+
+    sal_Int32 nCount = getImplAccessibleChildCount();
+    if (i >= nCount)
+        throw IndexOutOfBoundsException();
+
+    if (i == 0 && mpParent->getScrollBar().IsVisible())
         return mpParent->getScrollBar().GetAccessible();
-    else if ( i == 1 )
+
+    if ( !m_xAcc.is() )
     {
-        if ( !m_xAcc.is() )
-        {
-            m_pTable = new SvxShowCharSetAcc(this);
-            m_xAcc = m_pTable;
-        }
+        m_pTable = new SvxShowCharSetAcc(this);
+        m_xAcc = m_pTable;
     }
-    else
-        throw IndexOutOfBoundsException();
+
     return m_xAcc;
 }
 
diff --git a/svx/source/inc/charmapacc.hxx b/svx/source/inc/charmapacc.hxx
index 73bc31e599fc..2d1a09839141 100644
--- a/svx/source/inc/charmapacc.hxx
+++ b/svx/source/inc/charmapacc.hxx
@@ -44,6 +44,7 @@ namespace svx
         VclPtr<SvxShowCharSet>     mpParent; // the vcl control
         SvxShowCharSetAcc*  m_pTable; // the table, which holds the characters shown by the vcl control
         css::uno::Reference< css::accessibility::XAccessible > m_xAcc; // the ref to the table
+        sal_Int32 getImplAccessibleChildCount() const;
     protected:
         virtual ~SvxShowCharSetVirtualAcc() override;