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+/* -*- 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 <sal/config.h>
+
+#include <toolkit/helper/accessiblefactory.hxx>
+#include <osl/module.h>
+#include <osl/diagnose.h>
+#include <osl/mutex.hxx>
+#include <rtl/ref.hxx>
+#include <tools/svlibrary.h>
+
+#include <helper/accessibilityclient.hxx>
+
+namespace toolkit
+{
+ using namespace ::com::sun::star::uno;
+ using namespace ::com::sun::star::accessibility;
+
+ namespace
+ {
+#ifndef DISABLE_DYNLOADING
+ static oslModule s_hAccessibleImplementationModule = nullptr;
+#endif
+#if HAVE_FEATURE_DESKTOP
+ static GetStandardAccComponentFactory s_pAccessibleFactoryFunc = nullptr;
+#endif
+ static ::rtl::Reference< IAccessibleFactory > s_pFactory;
+ }
+
+
+ //= AccessibleDummyFactory
+
+ namespace {
+
+ class AccessibleDummyFactory:
+ public IAccessibleFactory
+ {
+ public:
+ AccessibleDummyFactory();
+ AccessibleDummyFactory(const AccessibleDummyFactory&) = delete;
+ AccessibleDummyFactory& operator=(const AccessibleDummyFactory&) = delete;
+
+ protected:
+ virtual ~AccessibleDummyFactory() override;
+
+ public:
+ // IAccessibleFactory
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXButton* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXCheckBox* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXRadioButton* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXListBox* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXFixedHyperlink* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXFixedText* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXScrollBar* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXEdit* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXComboBox* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXToolBox* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXHeaderBar* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessibleContext >
+ createAccessibleContext( VCLXWindow* /*_pXWindow*/ ) override
+ {
+ return nullptr;
+ }
+ css::uno::Reference< css::accessibility::XAccessible >
+ createAccessible( Menu* /*_pMenu*/, bool /*_bIsMenuBar*/ ) override
+ {
+ return nullptr;
+ }
+ };
+
+ }
+
+ AccessibleDummyFactory::AccessibleDummyFactory()
+ {
+ }
+
+
+ AccessibleDummyFactory::~AccessibleDummyFactory()
+ {
+ }
+
+
+ //= AccessibilityClient
+
+
+ AccessibilityClient::AccessibilityClient()
+ :m_bInitialized( false )
+ {
+ }
+
+#if HAVE_FEATURE_DESKTOP
+#ifndef DISABLE_DYNLOADING
+ extern "C" { static void thisModule() {} }
+#else
+ extern "C" void *getStandardAccessibleFactory();
+#endif
+#endif // HAVE_FEATURE_DESKTOP
+
+ void AccessibilityClient::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("getStandardAccessibleFactory");
+ s_pAccessibleFactoryFunc = reinterpret_cast<GetStandardAccComponentFactory>(
+ osl_getFunctionSymbol( s_hAccessibleImplementationModule, sFactoryCreationFunc.pData ));
+
+ }
+ OSL_ENSURE( s_pAccessibleFactoryFunc, "AccessibilityClient::ensureInitialized: could not load the library, or not retrieve the needed symbol!" );
+#else
+ s_pAccessibleFactoryFunc = getStandardAccessibleFactory;
+#endif // DISABLE_DYNLOADING
+
+ // get a factory instance
+ if ( s_pAccessibleFactoryFunc )
+ {
+ IAccessibleFactory* pFactory = static_cast< IAccessibleFactory* >( (*s_pAccessibleFactoryFunc)() );
+ OSL_ENSURE( pFactory, "AccessibilityClient::ensureInitialized: no factory provided by the A11Y lib!" );
+ 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& AccessibilityClient::getFactory()
+ {
+ ensureInitialized();
+ OSL_ENSURE( s_pFactory.is(), "AccessibilityClient::getFactory: at least a dummy factory should have been created!" );
+ return *s_pFactory;
+ }
+
+
+} // namespace toolkit
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */