1 files changed, 170 insertions, 0 deletions
diff --git a/unotools/source/accessibility/accessiblerelationsethelper.cxx b/unotools/source/accessibility/accessiblerelationsethelper.cxx
new file mode 100644
index 000000000..323b12c53
--- /dev/null
+++ b/unotools/source/accessibility/accessiblerelationsethelper.cxx
@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+#include <o3tl/safeint.hxx>
+#include <unotools/accessiblerelationsethelper.hxx>
+#include <comphelper/sequence.hxx>
+
+using namespace ::utl;
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::accessibility;
+
+namespace
+{
+    AccessibleRelation lcl_getRelationByType( std::vector<AccessibleRelation>& raRelations, sal_Int16 aRelationType )
+    {
+        for (const auto& aRelation: raRelations)
+        {
+            if (aRelation.RelationType == aRelationType)
+                return aRelation;
+        }
+        return AccessibleRelation();
+    }
+}
+//=====  internal  ============================================================
+
+AccessibleRelationSetHelper::AccessibleRelationSetHelper ()
+{
+}
+
+AccessibleRelationSetHelper::AccessibleRelationSetHelper (const AccessibleRelationSetHelper& rHelper)
+    : cppu::WeakImplHelper<XAccessibleRelationSet>(rHelper),
+      maRelations(rHelper.maRelations)
+{
+}
+
+AccessibleRelationSetHelper::~AccessibleRelationSetHelper()
+{
+}
+
+//=====  XAccessibleRelationSet  ==============================================
+
+    /** Returns the number of relations in this relation set.
+
+        @return
+            Returns the number of relations or zero if there are none.
+    */
+sal_Int32 SAL_CALL
+    AccessibleRelationSetHelper::getRelationCount(  )
+{
+    std::scoped_lock aGuard (maMutex);
+
+    return maRelations.size();
+}
+
+    /** Returns the relation of this relation set that is specified by
+        the given index.
+
+        @param nIndex
+            This index specifies the relatio to return.
+
+        @return
+            For a valid index, i.e. inside the range 0 to the number of
+            relations minus one, the returned value is the requested
+            relation.  If the index is invalid then the returned relation
+            has the type INVALID.
+
+    */
+ AccessibleRelation SAL_CALL
+        AccessibleRelationSetHelper::getRelation( sal_Int32 nIndex )
+{
+    std::scoped_lock aGuard (maMutex);
+
+    if ((nIndex < 0) || (o3tl::make_unsigned(nIndex) >= maRelations.size()))
+        throw lang::IndexOutOfBoundsException();
+
+    return maRelations[nIndex];
+}
+
+    /** Tests whether the relation set contains a relation matching the
+        specified key.
+
+        @param aRelationType
+            The type of relation to look for in this set of relations.  This
+            has to be one of the constants of
+            <type>AccessibleRelationType</type>.
+
+        @return
+            Returns <TRUE/> if there is a (at least one) relation of the
+            given type and <FALSE/> if there is no such relation in the set.
+    */
+sal_Bool SAL_CALL
+    AccessibleRelationSetHelper::containsRelation( sal_Int16 aRelationType )
+{
+    std::scoped_lock aGuard (maMutex);
+
+    AccessibleRelation defaultRelation; // default is INVALID
+    AccessibleRelation relationByType = lcl_getRelationByType(maRelations, aRelationType);
+    return relationByType.RelationType != defaultRelation.RelationType;
+}
+
+    /** Retrieve and return the relation with the given relation type.
+
+        @param aRelationType
+            The type of the relation to return.  This has to be one of the
+            constants of <type>AccessibleRelationType</type>.
+
+        @return
+            If a relation with the given type could be found than (a copy
+            of) this relation is returned.  Otherwise a relation with the
+            type INVALID is returned.
+    */
+AccessibleRelation SAL_CALL
+        AccessibleRelationSetHelper::getRelationByType( sal_Int16 aRelationType )
+{
+    std::scoped_lock aGuard (maMutex);
+
+    return lcl_getRelationByType(maRelations, aRelationType);
+}
+
+void AccessibleRelationSetHelper::AddRelation(const AccessibleRelation& rRelation)
+{
+    std::scoped_lock aGuard (maMutex);
+
+    for (auto& aRelation: maRelations)
+    {
+        if (aRelation.RelationType == rRelation.RelationType)
+        {
+            aRelation.TargetSet = comphelper::concatSequences(aRelation.TargetSet, rRelation.TargetSet);
+            return;
+        }
+    }
+    maRelations.push_back(rRelation);
+}
+
+//=====  XTypeProvider  =======================================================
+
+uno::Sequence< css::uno::Type> AccessibleRelationSetHelper::getTypes()
+{
+    static const uno::Sequence< css::uno::Type> aTypes {
+        cppu::UnoType<XAccessibleRelationSet>::get(),
+        cppu::UnoType<lang::XTypeProvider>::get()
+    };
+    return aTypes;
+}
+
+uno::Sequence<sal_Int8> SAL_CALL AccessibleRelationSetHelper::getImplementationId()
+{
+    return css::uno::Sequence<sal_Int8>();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */