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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <config_features.h>
21 :
22 : #include <sal/config.h>
23 :
24 : #include <boost/noncopyable.hpp>
25 :
26 : #include <toolkit/helper/accessiblefactory.hxx>
27 : #include <osl/module.h>
28 : #include <osl/diagnose.h>
29 : #include <osl/mutex.hxx>
30 : #include <tools/solar.h>
31 :
32 : #include "helper/accessibilityclient.hxx"
33 :
34 : namespace toolkit
35 : {
36 : using namespace ::com::sun::star::uno;
37 : using namespace ::com::sun::star::accessibility;
38 :
39 : namespace
40 : {
41 : #ifndef DISABLE_DYNLOADING
42 : static oslModule s_hAccessibleImplementationModule = NULL;
43 : #endif
44 : #if HAVE_FEATURE_DESKTOP
45 : static GetStandardAccComponentFactory s_pAccessibleFactoryFunc = NULL;
46 : #endif
47 266 : static ::rtl::Reference< IAccessibleFactory > s_pFactory;
48 : }
49 :
50 :
51 : //= AccessibleDummyFactory
52 :
53 : class AccessibleDummyFactory:
54 : public IAccessibleFactory, private boost::noncopyable
55 : {
56 : public:
57 : AccessibleDummyFactory();
58 :
59 : protected:
60 : virtual ~AccessibleDummyFactory();
61 :
62 : public:
63 : // IAccessibleFactory
64 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
65 0 : createAccessibleContext( VCLXButton* /*_pXWindow*/ ) SAL_OVERRIDE
66 : {
67 0 : return NULL;
68 : }
69 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
70 0 : createAccessibleContext( VCLXCheckBox* /*_pXWindow*/ ) SAL_OVERRIDE
71 : {
72 0 : return NULL;
73 : }
74 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
75 0 : createAccessibleContext( VCLXRadioButton* /*_pXWindow*/ ) SAL_OVERRIDE
76 : {
77 0 : return NULL;
78 : }
79 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
80 0 : createAccessibleContext( VCLXListBox* /*_pXWindow*/ ) SAL_OVERRIDE
81 : {
82 0 : return NULL;
83 : }
84 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
85 0 : createAccessibleContext( VCLXFixedHyperlink* /*_pXWindow*/ ) SAL_OVERRIDE
86 : {
87 0 : return NULL;
88 : }
89 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
90 0 : createAccessibleContext( VCLXFixedText* /*_pXWindow*/ ) SAL_OVERRIDE
91 : {
92 0 : return NULL;
93 : }
94 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
95 0 : createAccessibleContext( VCLXScrollBar* /*_pXWindow*/ ) SAL_OVERRIDE
96 : {
97 0 : return NULL;
98 : }
99 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
100 0 : createAccessibleContext( VCLXEdit* /*_pXWindow*/ ) SAL_OVERRIDE
101 : {
102 0 : return NULL;
103 : }
104 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
105 0 : createAccessibleContext( VCLXComboBox* /*_pXWindow*/ ) SAL_OVERRIDE
106 : {
107 0 : return NULL;
108 : }
109 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
110 0 : createAccessibleContext( VCLXToolBox* /*_pXWindow*/ ) SAL_OVERRIDE
111 : {
112 0 : return NULL;
113 : }
114 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessibleContext >
115 0 : createAccessibleContext( VCLXWindow* /*_pXWindow*/ ) SAL_OVERRIDE
116 : {
117 0 : return NULL;
118 : }
119 : ::com::sun::star::uno::Reference< ::com::sun::star::accessibility::XAccessible >
120 0 : createAccessible( Menu* /*_pMenu*/, bool /*_bIsMenuBar*/ ) SAL_OVERRIDE
121 : {
122 0 : return NULL;
123 : }
124 : };
125 :
126 :
127 0 : AccessibleDummyFactory::AccessibleDummyFactory()
128 : {
129 0 : }
130 :
131 :
132 0 : AccessibleDummyFactory::~AccessibleDummyFactory()
133 : {
134 0 : }
135 :
136 :
137 : //= AccessibilityClient
138 :
139 :
140 79006 : AccessibilityClient::AccessibilityClient()
141 79006 : :m_bInitialized( false )
142 : {
143 79006 : }
144 :
145 : #if HAVE_FEATURE_DESKTOP
146 : #ifndef DISABLE_DYNLOADING
147 0 : extern "C" { static void SAL_CALL thisModule() {} }
148 : #else
149 : extern "C" void *getStandardAccessibleFactory();
150 : #endif
151 : #endif // HAVE_FEATURE_DESKTOP
152 :
153 273 : void AccessibilityClient::ensureInitialized()
154 : {
155 273 : if ( m_bInitialized )
156 289 : return;
157 :
158 257 : ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() );
159 :
160 : #if HAVE_FEATURE_DESKTOP
161 : // load the library implementing the factory
162 257 : if ( !s_pFactory.get() )
163 : {
164 : #ifndef DISABLE_DYNLOADING
165 12 : const OUString sModuleName( SVLIBRARY( "acc" ) );
166 12 : s_hAccessibleImplementationModule = osl_loadModuleRelative( &thisModule, sModuleName.pData, 0 );
167 12 : if ( s_hAccessibleImplementationModule != NULL )
168 : {
169 : const OUString sFactoryCreationFunc =
170 12 : OUString("getStandardAccessibleFactory");
171 : s_pAccessibleFactoryFunc = reinterpret_cast<GetStandardAccComponentFactory>(
172 12 : osl_getFunctionSymbol( s_hAccessibleImplementationModule, sFactoryCreationFunc.pData ));
173 :
174 : }
175 : OSL_ENSURE( s_pAccessibleFactoryFunc, "AccessibilityClient::ensureInitialized: could not load the library, or not retrieve the needed symbol!" );
176 : #else
177 : s_pAccessibleFactoryFunc = getStandardAccessibleFactory;
178 : #endif // DISABLE_DYNLOADING
179 :
180 : // get a factory instance
181 12 : if ( s_pAccessibleFactoryFunc )
182 : {
183 12 : IAccessibleFactory* pFactory = static_cast< IAccessibleFactory* >( (*s_pAccessibleFactoryFunc)() );
184 : OSL_ENSURE( pFactory, "AccessibilityClient::ensureInitialized: no factory provided by the A11Y lib!" );
185 12 : if ( pFactory )
186 : {
187 12 : s_pFactory = pFactory;
188 12 : pFactory->release();
189 : }
190 12 : }
191 : }
192 : #endif // HAVE_FEATURE_DESKTOP
193 :
194 257 : if ( !s_pFactory.get() )
195 : // the attempt to load the lib, or to create the factory, failed
196 : // -> fall back to a dummy factory
197 0 : s_pFactory = new AccessibleDummyFactory;
198 :
199 257 : m_bInitialized = true;
200 : }
201 :
202 273 : IAccessibleFactory& AccessibilityClient::getFactory()
203 : {
204 273 : ensureInitialized();
205 : OSL_ENSURE( s_pFactory.is(), "AccessibilityClient::getFactory: at least a dummy factory should have been created!" );
206 273 : return *s_pFactory;
207 : }
208 :
209 :
210 798 : } // namespace toolkit
211 :
212 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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