Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 206 insertions, 0 deletions

diff --git a/vcl/unx/gtk3/a11y/atkselection.cxx b/vcl/unx/gtk3/a11y/atkselection.cxx
new file mode 100644
index 0000000000..0e74f1c295
--- /dev/null
+++ b/vcl/unx/gtk3/a11y/atkselection.cxx
@@ -0,0 +1,206 @@
+/* -*- 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 "atkwrapper.hxx"
+
+#include <com/sun/star/accessibility/XAccessibleSelection.hpp>
+#include <sal/log.hxx>
+
+using namespace ::com::sun::star;
+
+/// @throws uno::RuntimeException
+static css::uno::Reference<css::accessibility::XAccessibleSelection>
+    getSelection( AtkSelection *pSelection )
+{
+    AtkObjectWrapper *pWrap = ATK_OBJECT_WRAPPER( pSelection );
+    if( pWrap )
+    {
+        if( !pWrap->mpSelection.is() )
+        {
+            pWrap->mpSelection.set(pWrap->mpContext, css::uno::UNO_QUERY);
+        }
+
+        return pWrap->mpSelection;
+    }
+
+    return css::uno::Reference<css::accessibility::XAccessibleSelection>();
+}
+
+extern "C" {
+
+static gboolean
+selection_add_selection( AtkSelection *selection,
+                         gint          i )
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+        {
+            pSelection->selectAccessibleChild( i );
+            return true;
+        }
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in selectAccessibleChild()" );
+    }
+
+    return FALSE;
+}
+
+static gboolean
+selection_clear_selection( AtkSelection *selection )
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+        {
+            pSelection->clearAccessibleSelection();
+            return true;
+        }
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in clearAccessibleSelection()" );
+    }
+
+    return FALSE;
+}
+
+static AtkObject*
+selection_ref_selection( AtkSelection *selection,
+                         gint          i )
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+            return atk_object_wrapper_ref( pSelection->getSelectedAccessibleChild( i ) );
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in getSelectedAccessibleChild()" );
+    }
+
+    return nullptr;
+}
+
+static gint
+selection_get_selection_count( AtkSelection   *selection)
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+        {
+            sal_Int64 nSelected = pSelection->getSelectedAccessibleChildCount();
+            if (nSelected > std::numeric_limits<gint>::max())
+            {
+                SAL_WARN("vcl.gtk", "selection_get_selection_count: Count exceeds maximum gint value, "
+                                    "using max gint.");
+                nSelected = std::numeric_limits<gint>::max();
+            }
+            return nSelected;
+        }
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in getSelectedAccessibleChildCount()" );
+    }
+
+    return -1;
+}
+
+static gboolean
+selection_is_child_selected( AtkSelection   *selection,
+                              gint           i)
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+            return pSelection->isAccessibleChildSelected( i );
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in isAccessibleChildSelected()" );
+    }
+
+    return FALSE;
+}
+
+static gboolean
+selection_remove_selection( AtkSelection *selection,
+                            gint           i )
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+        {
+            css::uno::Reference<css::accessibility::XAccessible> xAcc = pSelection->getSelectedAccessibleChild(i);
+            if (!xAcc.is())
+                return false;
+
+            css::uno::Reference<css::accessibility::XAccessibleContext> xAccContext = xAcc->getAccessibleContext();
+            const sal_Int64 nChildIndex = xAccContext->getAccessibleIndexInParent();
+            pSelection->deselectAccessibleChild(nChildIndex);
+            return true;
+        }
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in getSelectedAccessibleChild(), getAccessibleIndexInParent() or deselectAccessibleChild()" );
+    }
+
+    return FALSE;
+}
+
+static gboolean
+selection_select_all_selection( AtkSelection   *selection)
+{
+    try {
+        css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
+            = getSelection( selection );
+        if( pSelection.is() )
+        {
+            pSelection->selectAllAccessibleChildren();
+            return true;
+        }
+    }
+    catch(const uno::Exception&) {
+        g_warning( "Exception in selectAllAccessibleChildren()" );
+    }
+
+    return FALSE;
+}
+
+} // extern "C"
+
+void
+selectionIfaceInit( AtkSelectionIface *iface)
+{
+  g_return_if_fail (iface != nullptr);
+
+  iface->add_selection = selection_add_selection;
+  iface->clear_selection = selection_clear_selection;
+  iface->ref_selection = selection_ref_selection;
+  iface->get_selection_count = selection_get_selection_count;
+  iface->is_child_selected = selection_is_child_selected;
+  iface->remove_selection = selection_remove_selection;
+  iface->select_all_selection = selection_select_all_selection;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */