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Diffstat (limited to 'vcl/source/helper/svtaccessiblefactory.cxx')
| -rw-r--r-- | vcl/source/helper/svtaccessiblefactory.cxx | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/vcl/source/helper/svtaccessiblefactory.cxx b/vcl/source/helper/svtaccessiblefactory.cxx new file mode 100644 index 000000000..5b966d486 --- /dev/null +++ b/vcl/source/helper/svtaccessiblefactory.cxx @@ -0,0 +1,273 @@ +/* -*- 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 <config_feature_desktop.h> + +#include <vcl/svtaccessiblefactory.hxx> +#include <vcl/accessiblefactory.hxx> + +#include <tools/svlibrary.h> +#include <tools/debug.hxx> + +#include <osl/module.h> +#include <osl/diagnose.h> +#include <rtl/ref.hxx> + +namespace vcl +{ + using namespace ::com::sun::star::uno; + using namespace ::com::sun::star::awt; + using namespace ::com::sun::star::accessibility; + + namespace + { +#ifndef DISABLE_DYNLOADING + static oslModule s_hAccessibleImplementationModule = nullptr; +#endif +#if HAVE_FEATURE_DESKTOP + static GetSvtAccessibilityComponentFactory s_pAccessibleFactoryFunc = nullptr; +#endif + static ::rtl::Reference< IAccessibleFactory > s_pFactory; + + + //= AccessibleDummyFactory + + class AccessibleDummyFactory: + public IAccessibleFactory + { + public: + AccessibleDummyFactory(); + AccessibleDummyFactory(const AccessibleDummyFactory&) = delete; + AccessibleDummyFactory& operator=(const AccessibleDummyFactory&) = delete; + + protected: + virtual ~AccessibleDummyFactory() override; + + public: + // IAccessibleFactory + virtual vcl::IAccessibleTabListBox* + createAccessibleTabListBox( + const css::uno::Reference< css::accessibility::XAccessible >& /*rxParent*/, + SvHeaderTabListBox& /*rBox*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleTreeListBox( + SvTreeListBox& /*_rListBox*/, + const css::uno::Reference< css::accessibility::XAccessible >& /*_xParent*/ + ) const override + { + return nullptr; + } + + virtual vcl::IAccessibleBrowseBox* + createAccessibleBrowseBox( + const css::uno::Reference< css::accessibility::XAccessible >& /*_rxParent*/, + vcl::IAccessibleTableProvider& /*_rBrowseBox*/ + ) const override + { + return nullptr; + } + + virtual table::IAccessibleTableControl* + createAccessibleTableControl( + const css::uno::Reference< css::accessibility::XAccessible >& /*_rxParent*/, + table::IAccessibleTable& /*_rTable*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleIconChoiceCtrl( + SvtIconChoiceCtrl& /*_rIconCtrl*/, + const css::uno::Reference< css::accessibility::XAccessible >& /*_xParent*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleTabBar( + TabBar& /*_rTabBar*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessibleContext > + createAccessibleTextWindowContext( + VCLXWindow* /*pVclXWindow*/, TextEngine& /*rEngine*/, TextView& /*rView*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleBrowseBoxHeaderBar( + const css::uno::Reference< css::accessibility::XAccessible >& /*rxParent*/, + vcl::IAccessibleTableProvider& /*_rOwningTable*/, + vcl::AccessibleBrowseBoxObjType /*_eObjType*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleBrowseBoxTableCell( + const css::uno::Reference< css::accessibility::XAccessible >& /*_rxParent*/, + vcl::IAccessibleTableProvider& /*_rBrowseBox*/, + const css::uno::Reference< css::awt::XWindow >& /*_xFocusWindow*/, + sal_Int32 /*_nRowId*/, + sal_uInt16 /*_nColId*/, + sal_Int32 /*_nOffset*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleBrowseBoxHeaderCell( + sal_Int32 /*_nColumnRowId*/, + const css::uno::Reference< css::accessibility::XAccessible >& /*rxParent*/, + vcl::IAccessibleTableProvider& /*_rBrowseBox*/, + const css::uno::Reference< css::awt::XWindow >& /*_xFocusWindow*/, + vcl::AccessibleBrowseBoxObjType /*_eObjType*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createAccessibleCheckBoxCell( + const css::uno::Reference< css::accessibility::XAccessible >& /*_rxParent*/, + vcl::IAccessibleTableProvider& /*_rBrowseBox*/, + const css::uno::Reference< css::awt::XWindow >& /*_xFocusWindow*/, + sal_Int32 /*_nRowPos*/, + sal_uInt16 /*_nColPos*/, + const TriState& /*_eState*/, + bool /*_bIsTriState*/ + ) const override + { + return nullptr; + } + + virtual css::uno::Reference< css::accessibility::XAccessible > + createEditBrowseBoxTableCellAccess( + const css::uno::Reference< css::accessibility::XAccessible >& /*_rxParent*/, + const css::uno::Reference< css::accessibility::XAccessible >& /*_rxControlAccessible*/, + const css::uno::Reference< css::awt::XWindow >& /*_rxFocusWindow*/, + vcl::IAccessibleTableProvider& /*_rBrowseBox*/, + sal_Int32 /*_nRowPos*/, + sal_uInt16 /*_nColPos*/ + ) const override + { + return nullptr; + } + }; + + + AccessibleDummyFactory::AccessibleDummyFactory() + { + } + + + AccessibleDummyFactory::~AccessibleDummyFactory() + { + } + + } + + + //= AccessibleFactoryAccess + + + AccessibleFactoryAccess::AccessibleFactoryAccess() + :m_bInitialized( false ) + { + } + +#if HAVE_FEATURE_DESKTOP +#ifndef DISABLE_DYNLOADING + extern "C" { static void thisModule() {} } +#else + extern "C" void* getSvtAccessibilityComponentFactory(); +#endif +#endif // HAVE_FEATURE_DESKTOP + + void AccessibleFactoryAccess::ensureInitialized() + { + if ( m_bInitialized ) + return; + + ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() ); + +#if HAVE_FEATURE_DESKTOP + // load the library implementing the factory + if (!s_pFactory) + { +#ifndef DISABLE_DYNLOADING + const OUString sModuleName( SVLIBRARY( "acc" )); + s_hAccessibleImplementationModule = osl_loadModuleRelative( &thisModule, sModuleName.pData, 0 ); + if ( s_hAccessibleImplementationModule != nullptr ) + { + const OUString sFactoryCreationFunc( "getSvtAccessibilityComponentFactory" ); + s_pAccessibleFactoryFunc = reinterpret_cast<GetSvtAccessibilityComponentFactory>( + osl_getFunctionSymbol( s_hAccessibleImplementationModule, sFactoryCreationFunc.pData )); + + } + OSL_ENSURE( s_pAccessibleFactoryFunc, "ac_registerClient: could not load the library, or not retrieve the needed symbol!" ); +#else + s_pAccessibleFactoryFunc = getSvtAccessibilityComponentFactory; +#endif // DISABLE_DYNLOADING + + // get a factory instance + if ( s_pAccessibleFactoryFunc ) + { + IAccessibleFactory* pFactory = static_cast< IAccessibleFactory* >( (*s_pAccessibleFactoryFunc)() ); + if ( pFactory ) + { + s_pFactory = pFactory; + pFactory->release(); + } + } + } +#endif // HAVE_FEATURE_DESKTOP + + if (!s_pFactory) + // the attempt to load the lib, or to create the factory, failed + // -> fall back to a dummy factory + s_pFactory = new AccessibleDummyFactory; + + m_bInitialized = true; + } + + IAccessibleFactory& AccessibleFactoryAccess::getFactory() + { + ensureInitialized(); + DBG_ASSERT( s_pFactory.is(), "AccessibleFactoryAccess::getFactory: at least a dummy factory should have been created!" ); + return *s_pFactory; + } + +} // namespace vcl + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |