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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 <toolkit/controls/accessiblecontrolcontext.hxx>
21 : #include <unotools/accessiblestatesethelper.hxx>
22 : #include <com/sun/star/awt/XControl.hpp>
23 : #include <com/sun/star/awt/XWindow.hpp>
24 : #include <vcl/svapp.hxx>
25 : #include <com/sun/star/accessibility/AccessibleStateType.hpp>
26 : #include <com/sun/star/accessibility/AccessibleRole.hpp>
27 : #include <toolkit/helper/vclunohelper.hxx>
28 : #include <toolkit/helper/externallock.hxx>
29 : #include <vcl/window.hxx>
30 :
31 :
32 : namespace toolkit
33 : {
34 :
35 :
36 : using ::comphelper::OContextEntryGuard;
37 : using namespace ::com::sun::star;
38 : using namespace ::com::sun::star::uno;
39 : using namespace ::com::sun::star::lang;
40 : using namespace ::com::sun::star::beans;
41 : using namespace ::com::sun::star::accessibility;
42 :
43 :
44 : //= OAccessibleControlContext
45 :
46 :
47 29 : OAccessibleControlContext::OAccessibleControlContext()
48 29 : : OAccessibleControlContext_Base(new VCLExternalSolarLock)
49 : {
50 : // nothing to do here, we have a late ctor
51 29 : }
52 :
53 :
54 87 : OAccessibleControlContext::~OAccessibleControlContext()
55 : {
56 29 : ensureDisposed();
57 58 : }
58 :
59 :
60 1073 : IMPLEMENT_FORWARD_XINTERFACE3( OAccessibleControlContext, OAccessibleControlContext_Base, OAccessibleImplementationAccess, OAccessibleControlContext_IBase )
61 0 : IMPLEMENT_FORWARD_XTYPEPROVIDER3( OAccessibleControlContext, OAccessibleControlContext_Base, OAccessibleImplementationAccess, OAccessibleControlContext_IBase )
62 : // (order matters: the first is the class name, the second is the class doing the ref counting)
63 :
64 :
65 29 : void OAccessibleControlContext::Init( const Reference< XAccessible >& _rxCreator )
66 : {
67 29 : OContextEntryGuard aGuard( this );
68 :
69 : // retrieve the model of the control
70 : OSL_ENSURE( !m_xControlModel.is(), "OAccessibleControlContext::Init: already know a control model....!???" );
71 :
72 58 : Reference< awt::XControl > xControl( _rxCreator, UNO_QUERY );
73 29 : if ( xControl.is() )
74 29 : m_xControlModel.set(xControl->getModel(), css::uno::UNO_QUERY);
75 : OSL_ENSURE( m_xControlModel.is(), "OAccessibleControlContext::Init: invalid creator (no control, or control without model!" );
76 29 : if ( !m_xControlModel.is() )
77 0 : throw DisposedException(); // caught by the caller (the create method)
78 :
79 : // start listening at the model
80 29 : startModelListening();
81 :
82 : // announce the XAccessible to our base class
83 58 : OAccessibleControlContext_Base::lateInit( _rxCreator );
84 29 : }
85 :
86 :
87 29 : OAccessibleControlContext* OAccessibleControlContext::create( const Reference< XAccessible >& _rxCreator )
88 : {
89 29 : OAccessibleControlContext* pNew = NULL;
90 : try
91 : {
92 29 : pNew = new OAccessibleControlContext;
93 29 : pNew->Init( _rxCreator );
94 : }
95 0 : catch( const Exception& )
96 : {
97 : OSL_FAIL( "OAccessibleControlContext::create: caught an exception from the late ctor!" );
98 : }
99 29 : return pNew;
100 : }
101 :
102 :
103 29 : void OAccessibleControlContext::startModelListening( )
104 : {
105 29 : Reference< XComponent > xModelComp( m_xControlModel, UNO_QUERY );
106 : OSL_ENSURE( xModelComp.is(), "OAccessibleControlContext::startModelListening: invalid model!" );
107 29 : if ( xModelComp.is() )
108 29 : xModelComp->addEventListener( this );
109 29 : }
110 :
111 :
112 29 : void OAccessibleControlContext::stopModelListening( )
113 : {
114 29 : Reference< XComponent > xModelComp( m_xControlModel, UNO_QUERY );
115 : OSL_ENSURE( xModelComp.is(), "OAccessibleControlContext::stopModelListening: invalid model!" );
116 29 : if ( xModelComp.is() )
117 29 : xModelComp->removeEventListener( this );
118 29 : }
119 :
120 :
121 0 : sal_Int32 SAL_CALL OAccessibleControlContext::getAccessibleChildCount( ) throw (RuntimeException, std::exception)
122 : {
123 : // we do not have children
124 0 : return 0;
125 : }
126 :
127 :
128 0 : Reference< XAccessible > SAL_CALL OAccessibleControlContext::getAccessibleChild( sal_Int32 ) throw (IndexOutOfBoundsException, RuntimeException, std::exception)
129 : {
130 : // we do not have children
131 0 : throw IndexOutOfBoundsException();
132 : }
133 :
134 :
135 0 : Reference< XAccessible > SAL_CALL OAccessibleControlContext::getAccessibleParent( ) throw (RuntimeException, std::exception)
136 : {
137 0 : OContextEntryGuard aGuard( this );
138 : OSL_ENSURE( implGetForeignControlledParent().is(), "OAccessibleControlContext::getAccessibleParent: somebody forgot to set a parent!" );
139 : // this parent of us is foreign controlled - somebody has to set it using the OAccessibleImplementationAccess
140 : // class, before integrating our instance into an AccessibleDocumentModel
141 0 : return implGetForeignControlledParent();
142 : }
143 :
144 :
145 0 : sal_Int16 SAL_CALL OAccessibleControlContext::getAccessibleRole( ) throw (RuntimeException, std::exception)
146 : {
147 0 : return AccessibleRole::SHAPE;
148 : }
149 :
150 :
151 0 : OUString SAL_CALL OAccessibleControlContext::getAccessibleDescription( ) throw (RuntimeException, std::exception)
152 : {
153 0 : OContextEntryGuard aGuard( this );
154 0 : return getModelStringProperty( "HelpText" );
155 : }
156 :
157 :
158 0 : OUString SAL_CALL OAccessibleControlContext::getAccessibleName( ) throw (RuntimeException, std::exception)
159 : {
160 0 : OContextEntryGuard aGuard( this );
161 0 : return getModelStringProperty( "Name" );
162 : }
163 :
164 :
165 0 : Reference< XAccessibleRelationSet > SAL_CALL OAccessibleControlContext::getAccessibleRelationSet( ) throw (RuntimeException, std::exception)
166 : {
167 0 : return NULL;
168 : }
169 :
170 :
171 0 : Reference< XAccessibleStateSet > SAL_CALL OAccessibleControlContext::getAccessibleStateSet( ) throw (RuntimeException, std::exception)
172 : {
173 0 : ::osl::MutexGuard aGuard( GetMutex() );
174 : // no OContextEntryGuard here, as we do not want to throw an exception in case we're not alive anymore
175 :
176 0 : ::utl::AccessibleStateSetHelper* pStateSet = NULL;
177 0 : if ( isAlive() )
178 : {
179 : // no own states, only the ones which are foreign controlled
180 0 : pStateSet = new ::utl::AccessibleStateSetHelper( implGetForeignControlledStates() );
181 : }
182 : else
183 : { // only the DEFUNC state if we're already disposed
184 0 : pStateSet = new ::utl::AccessibleStateSetHelper;
185 0 : pStateSet->AddState( AccessibleStateType::DEFUNC );
186 : }
187 0 : return pStateSet;
188 : }
189 :
190 :
191 29 : void SAL_CALL OAccessibleControlContext::disposing( const EventObject&
192 : #if OSL_DEBUG_LEVEL > 0
193 : _rSource
194 : #endif
195 : ) throw ( RuntimeException, std::exception )
196 : {
197 : OSL_ENSURE( Reference< XPropertySet >( _rSource.Source, UNO_QUERY ).get() == m_xControlModel.get(),
198 : "OAccessibleControlContext::disposing: where did this come from?" );
199 :
200 29 : stopModelListening( );
201 29 : m_xControlModel.clear();
202 29 : m_xModelPropsInfo.clear();
203 :
204 29 : OAccessibleControlContext_Base::disposing();
205 29 : }
206 :
207 :
208 0 : OUString OAccessibleControlContext::getModelStringProperty( const sal_Char* _pPropertyName )
209 : {
210 0 : OUString sReturn;
211 : try
212 : {
213 0 : if ( !m_xModelPropsInfo.is() && m_xControlModel.is() )
214 0 : m_xModelPropsInfo = m_xControlModel->getPropertySetInfo();
215 :
216 0 : OUString sPropertyName( OUString::createFromAscii( _pPropertyName ) );
217 0 : if ( m_xModelPropsInfo.is() && m_xModelPropsInfo->hasPropertyByName( sPropertyName ) )
218 0 : m_xControlModel->getPropertyValue( sPropertyName ) >>= sReturn;
219 : }
220 0 : catch( const Exception& )
221 : {
222 : OSL_FAIL( "OAccessibleControlContext::getModelStringProperty: caught an exception!" );
223 : }
224 0 : return sReturn;
225 : }
226 :
227 :
228 0 : VclPtr< vcl::Window > OAccessibleControlContext::implGetWindow( Reference< awt::XWindow >* _pxUNOWindow ) const
229 : {
230 0 : Reference< awt::XControl > xControl( getAccessibleCreator(), UNO_QUERY );
231 0 : Reference< awt::XWindow > xWindow;
232 0 : if ( xControl.is() )
233 0 : xWindow.set(xControl->getPeer(), css::uno::UNO_QUERY);
234 :
235 0 : VclPtr< vcl::Window > pWindow = xWindow.is() ? VCLUnoHelper::GetWindow( xWindow ) : VclPtr< vcl::Window >();
236 :
237 0 : if ( _pxUNOWindow )
238 0 : *_pxUNOWindow = xWindow;
239 :
240 0 : return pWindow;
241 : }
242 :
243 :
244 0 : awt::Rectangle OAccessibleControlContext::implGetBounds( ) throw (RuntimeException)
245 : {
246 0 : SolarMutexGuard aSolarGuard;
247 : // want to do some VCL stuff here ...
248 0 : OContextEntryGuard aGuard( this );
249 :
250 : OSL_FAIL( "OAccessibleControlContext::implGetBounds: performance issue: forced to calc the size myself!" );
251 : // In design mode (and this is what this class is for), the surrounding shape (if any) should handle this call
252 : // The problem is that in design mode, our size may not be correct (in the drawing layer, controls are
253 : // positioned/sized for painting only), and that calculation of our position is expensive
254 :
255 : // what we know (or can obtain from somewhere):
256 : // * the PosSize of our peer, relative to its parent window
257 : // * the parent window which the PosSize is relative to
258 : // * our foreign controlled accessible parent
259 : // from this info, we can determine the position of our peer relative to the foreign parent
260 :
261 : // our control
262 0 : Reference< awt::XWindow > xWindow;
263 0 : VclPtr< vcl::Window > pVCLWindow = implGetWindow( &xWindow );
264 :
265 0 : awt::Rectangle aBounds( 0, 0, 0, 0 );
266 0 : if ( xWindow.is() )
267 : {
268 : // ugly, but .... though the XWindow has a getPosSize, it is impossible to determine the
269 : // parent which this position/size is relative to. This means we must tunnel UNO and ask the
270 : // implementation
271 0 : vcl::Window* pVCLParent = pVCLWindow ? pVCLWindow->GetParent() : NULL;
272 :
273 : // the relative location of the window
274 0 : ::Point aWindowRelativePos( 0, 0);
275 0 : if ( pVCLWindow )
276 0 : aWindowRelativePos = pVCLWindow->GetPosPixel();
277 :
278 : // the screnn position of the "window parent" of the control
279 0 : ::Point aVCLParentScreenPos( 0, 0 );
280 0 : if ( pVCLParent )
281 0 : aVCLParentScreenPos = pVCLParent->GetPosPixel();
282 :
283 : // the screen position of the "accessible parent" of the control
284 0 : Reference< XAccessible > xParentAcc( implGetForeignControlledParent() );
285 0 : Reference< XAccessibleComponent > xParentAccComponent;
286 0 : if ( xParentAcc.is() )
287 0 : xParentAccComponent.set(xParentAcc->getAccessibleContext(), css::uno::UNO_QUERY);
288 0 : awt::Point aAccParentScreenPos( 0, 0 );
289 0 : if ( xParentAccComponent.is() )
290 0 : aAccParentScreenPos = xParentAccComponent->getLocationOnScreen();
291 :
292 : // now the size of the control
293 0 : aBounds = xWindow->getPosSize();
294 :
295 : // correct the pos
296 0 : aBounds.X = aWindowRelativePos.X() + aVCLParentScreenPos.X() - aAccParentScreenPos.X;
297 0 : aBounds.Y = aWindowRelativePos.Y() + aVCLParentScreenPos.Y() - aAccParentScreenPos.Y;
298 : }
299 :
300 0 : return aBounds;
301 : }
302 :
303 :
304 0 : Reference< XAccessible > SAL_CALL OAccessibleControlContext::getAccessibleAtPoint( const awt::Point& /* _rPoint */ ) throw (RuntimeException, std::exception)
305 : {
306 : // no children at all
307 0 : return NULL;
308 : }
309 :
310 :
311 0 : void SAL_CALL OAccessibleControlContext::grabFocus( ) throw (RuntimeException, std::exception)
312 : {
313 : OSL_FAIL( "OAccessibleControlContext::grabFocus: !isFocusTraversable, but grabFocus!" );
314 0 : }
315 :
316 :
317 0 : sal_Int32 SAL_CALL OAccessibleControlContext::getForeground( ) throw (::com::sun::star::uno::RuntimeException, std::exception)
318 : {
319 0 : SolarMutexGuard aSolarGuard;
320 : // want to do some VCL stuff here ...
321 0 : OContextEntryGuard aGuard( this );
322 :
323 0 : VclPtr< vcl::Window > pWindow = implGetWindow();
324 0 : sal_Int32 nColor = 0;
325 0 : if ( pWindow )
326 : {
327 0 : if ( pWindow->IsControlForeground() )
328 0 : nColor = pWindow->GetControlForeground().GetColor();
329 : else
330 : {
331 0 : vcl::Font aFont;
332 0 : if ( pWindow->IsControlFont() )
333 0 : aFont = pWindow->GetControlFont();
334 : else
335 0 : aFont = pWindow->GetFont();
336 0 : nColor = aFont.GetColor().GetColor();
337 : }
338 : }
339 0 : return nColor;
340 : }
341 :
342 :
343 0 : sal_Int32 SAL_CALL OAccessibleControlContext::getBackground( ) throw (::com::sun::star::uno::RuntimeException, std::exception)
344 : {
345 0 : SolarMutexGuard aSolarGuard;
346 : // want to do some VCL stuff here ...
347 0 : OContextEntryGuard aGuard( this );
348 :
349 0 : VclPtr< vcl::Window > pWindow = implGetWindow();
350 0 : sal_Int32 nColor = 0;
351 0 : if ( pWindow )
352 : {
353 0 : if ( pWindow->IsControlBackground() )
354 0 : nColor = pWindow->GetControlBackground().GetColor();
355 : else
356 0 : nColor = pWindow->GetBackground().GetColor().GetColor();
357 : }
358 :
359 0 : return nColor;
360 : }
361 :
362 :
363 : } //namespace toolkit
364 :
365 :
366 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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