diff options
Diffstat (limited to 'vcl/unx/gtk3/a11y/atkselection.cxx')
| -rw-r--r-- | vcl/unx/gtk3/a11y/atkselection.cxx | 206 |
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: */ |