tdf#157696 vcl a11y: Move qt's translation to IA2 text attrs for reuse

Qt expects the text attributes to be reported as IAccessible2
attributes. Therefore, there is a translation/conversion
from the LO-internal text attributes to IAccessible2 text
attributes in `QtAccessibleWidget::attributes`.

Move the logic from the qt-VCL-specific code into a new
VCL helper class `AccessibleTextAttributeHelper`, so
it can be reused in winaccessibility in following commits.

Change-Id: I434481faa53c74bae95cae5b2c9f0907b87fb1bb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157804
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

1 files changed, 39 insertions, 0 deletions

diff --git a/include/vcl/accessibility/AccessibleTextAttributeHelper.hxx b/include/vcl/accessibility/AccessibleTextAttributeHelper.hxx
new file mode 100644
index 000000000000..6f8ef6dab66e
--- /dev/null
+++ b/include/vcl/accessibility/AccessibleTextAttributeHelper.hxx
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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 .
+ */
+
+#pragma once
+
+#include <com/sun/star/beans/PropertyValue.hdl>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <rtl/ustring.hxx>
+#include <vcl/dllapi.h>
+
+class VCL_DLLPUBLIC AccessibleTextAttributeHelper
+{
+public:
+    /** Converts UNO text attribute properties to a string holding
+     *  the corresponding IAccessible2 text attributes.
+     * @param rUnoAttributes A sequence holding the UNO text attributes.
+     * @returns String holding the corresponding IAccessible2 text properties.
+     */
+    static OUString ConvertUnoToIAccessible2TextAttributes(
+        const css::uno::Sequence<css::beans::PropertyValue>& rUnoAttributes);
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */