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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 <accessibility/standard/vclxaccessiblelist.hxx>
21 : #include <accessibility/standard/vclxaccessiblelistitem.hxx>
22 : #include <accessibility/helper/listboxhelper.hxx>
23 :
24 : #include <unotools/accessiblestatesethelper.hxx>
25 : #include <com/sun/star/accessibility/AccessibleStateType.hpp>
26 : #include <com/sun/star/accessibility/AccessibleEventId.hpp>
27 : #include <com/sun/star/accessibility/AccessibleRole.hpp>
28 : #include <vcl/svapp.hxx>
29 : #include <vcl/combobox.hxx>
30 : #include <vcl/lstbox.hxx>
31 : #include <toolkit/helper/convert.hxx>
32 :
33 : using namespace ::com::sun::star;
34 : using namespace ::com::sun::star::uno;
35 : using namespace ::com::sun::star::lang;
36 : using namespace ::com::sun::star::beans;
37 : using namespace ::com::sun::star::accessibility;
38 : using namespace ::accessibility;
39 :
40 : namespace
41 : {
42 0 : void checkSelection_Impl( sal_Int32 _nIndex, const IComboListBoxHelper& _rListBox, sal_Bool bSelected )
43 : throw (::com::sun::star::lang::IndexOutOfBoundsException)
44 : {
45 0 : sal_Int32 nCount = bSelected ? (sal_Int32)_rListBox.GetSelectEntryCount()
46 0 : : (sal_Int32)_rListBox.GetEntryCount();
47 0 : if ( _nIndex < 0 || _nIndex >= nCount )
48 0 : throw ::com::sun::star::lang::IndexOutOfBoundsException();
49 0 : }
50 : }
51 :
52 0 : VCLXAccessibleList::VCLXAccessibleList (VCLXWindow* pVCLWindow, BoxType aBoxType,
53 : const Reference< XAccessible >& _xParent)
54 : : VCLXAccessibleComponent (pVCLWindow),
55 : m_aBoxType (aBoxType),
56 : m_nVisibleLineCount (0),
57 : m_nIndexInParent (DEFAULT_INDEX_IN_PARENT),
58 : m_nLastTopEntry ( 0 ),
59 : m_nLastSelectedPos ( LISTBOX_ENTRY_NOTFOUND ),
60 : m_bDisableProcessEvent ( false ),
61 : m_bVisible ( true ),
62 0 : m_xParent ( _xParent )
63 : {
64 : // Because combo boxes and list boxes don't have a common interface for
65 : // methods with identical signature we have to write down twice the
66 : // same code.
67 0 : switch (m_aBoxType)
68 : {
69 : case COMBOBOX:
70 : {
71 0 : ComboBox* pBox = static_cast<ComboBox*>(GetWindow());
72 0 : if ( pBox != NULL )
73 0 : m_pListBoxHelper = new VCLListBoxHelper<ComboBox> (*pBox);
74 0 : break;
75 : }
76 :
77 : case LISTBOX:
78 : {
79 0 : ListBox* pBox = static_cast<ListBox*>(GetWindow());
80 0 : if ( pBox != NULL )
81 0 : m_pListBoxHelper = new VCLListBoxHelper<ListBox> (*pBox);
82 0 : break;
83 : }
84 : }
85 0 : UpdateVisibleLineCount();
86 :
87 0 : sal_uInt16 nCount = static_cast<sal_uInt16>(getAccessibleChildCount());
88 0 : m_aAccessibleChildren.reserve(nCount);
89 0 : }
90 : // -----------------------------------------------------------------------------
91 :
92 0 : VCLXAccessibleList::~VCLXAccessibleList (void)
93 : {
94 0 : delete m_pListBoxHelper;
95 0 : }
96 : // -----------------------------------------------------------------------------
97 :
98 0 : void VCLXAccessibleList::SetIndexInParent (sal_Int32 nIndex)
99 : {
100 0 : m_nIndexInParent = nIndex;
101 0 : }
102 : // -----------------------------------------------------------------------------
103 :
104 0 : void SAL_CALL VCLXAccessibleList::disposing (void)
105 : {
106 0 : VCLXAccessibleComponent::disposing();
107 :
108 : // Dispose all items in the list.
109 0 : clearItems();
110 :
111 0 : delete m_pListBoxHelper;
112 0 : m_pListBoxHelper = NULL;
113 0 : }
114 : // -----------------------------------------------------------------------------
115 :
116 0 : void VCLXAccessibleList::clearItems()
117 : {
118 : // Clear the list itself and delete all the rest.
119 0 : ListItems().swap(m_aAccessibleChildren); // clear and minimize
120 0 : }
121 : // -----------------------------------------------------------------------------
122 :
123 0 : void VCLXAccessibleList::FillAccessibleStateSet (utl::AccessibleStateSetHelper& rStateSet)
124 : {
125 0 : SolarMutexGuard aSolarGuard;
126 :
127 0 : VCLXAccessibleComponent::FillAccessibleStateSet( rStateSet );
128 : // check if our list should be visible
129 0 : if ( m_pListBoxHelper
130 0 : && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN
131 0 : && !m_pListBoxHelper->IsInDropDown() )
132 : {
133 0 : rStateSet.RemoveState (AccessibleStateType::VISIBLE);
134 0 : rStateSet.RemoveState (AccessibleStateType::SHOWING);
135 0 : m_bVisible = false;
136 : }
137 :
138 : // Both the combo box and list box are handled identical in the
139 : // following but for some reason they don't have a common interface for
140 : // the methods used.
141 0 : if ( m_pListBoxHelper )
142 : {
143 0 : if ( m_pListBoxHelper->IsMultiSelectionEnabled() )
144 0 : rStateSet.AddState( AccessibleStateType::MULTI_SELECTABLE);
145 0 : rStateSet.AddState (AccessibleStateType::FOCUSABLE);
146 : // All children are transient.
147 0 : rStateSet.AddState (AccessibleStateType::MANAGES_DESCENDANTS);
148 0 : }
149 0 : }
150 : // -----------------------------------------------------------------------------
151 0 : void VCLXAccessibleList::notifyVisibleStates(sal_Bool _bSetNew )
152 : {
153 0 : m_bVisible = _bSetNew ? true : false;
154 0 : Any aOldValue, aNewValue;
155 0 : (_bSetNew ? aNewValue : aOldValue ) <<= AccessibleStateType::VISIBLE;
156 0 : NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
157 0 : (_bSetNew ? aNewValue : aOldValue ) <<= AccessibleStateType::SHOWING;
158 0 : NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
159 :
160 0 : ListItems::iterator aIter = m_aAccessibleChildren.begin();
161 0 : ListItems::iterator aEnd = m_aAccessibleChildren.end();
162 0 : UpdateVisibleLineCount();
163 : // adjust the index inside the VCLXAccessibleListItem
164 0 : for (;aIter != aEnd ; ++aIter)
165 : {
166 0 : Reference< XAccessible > xHold = *aIter;
167 0 : VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get());
168 0 : if ( pItem )
169 : {
170 0 : sal_uInt16 nTopEntry = 0;
171 0 : if ( m_pListBoxHelper )
172 0 : nTopEntry = m_pListBoxHelper->GetTopEntry();
173 0 : sal_uInt16 nPos = (sal_uInt16)(aIter - m_aAccessibleChildren.begin());
174 0 : sal_Bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) );
175 0 : pItem->SetVisible( m_bVisible && bVisible );
176 : }
177 :
178 0 : }
179 0 : }
180 : // -----------------------------------------------------------------------------
181 0 : void VCLXAccessibleList::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent)
182 : {
183 : // Create a reference to this object to prevent an early release of the
184 : // listbox (VCLEVENT_OBJECT_DYING).
185 0 : Reference< XAccessible > xTemp = this;
186 :
187 0 : switch ( rVclWindowEvent.GetId() )
188 : {
189 : case VCLEVENT_DROPDOWN_OPEN:
190 0 : notifyVisibleStates(sal_True);
191 0 : break;
192 : case VCLEVENT_DROPDOWN_CLOSE:
193 0 : notifyVisibleStates(sal_False);
194 0 : break;
195 : case VCLEVENT_LISTBOX_SCROLLED:
196 : case VCLEVENT_COMBOBOX_SCROLLED:
197 0 : UpdateEntryRange_Impl();
198 0 : break;
199 :
200 : case VCLEVENT_LISTBOX_SELECT:
201 0 : if ( !m_bDisableProcessEvent )
202 0 : UpdateSelection_Impl();
203 0 : break;
204 : // The selection events VCLEVENT_COMBOBOX_SELECT and
205 : // VCLEVENT_COMBOBOX_DESELECT are not handled here because here we
206 : // have no access to the edit field. Its text is necessary to
207 : // identify the currently selected item.
208 :
209 : case VCLEVENT_OBJECT_DYING:
210 : {
211 0 : dispose();
212 :
213 0 : VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
214 0 : break;
215 : }
216 :
217 : case VCLEVENT_LISTBOX_ITEMREMOVED:
218 : case VCLEVENT_COMBOBOX_ITEMREMOVED:
219 : HandleChangedItemList (false, reinterpret_cast<sal_IntPtr>(
220 0 : rVclWindowEvent.GetData()));
221 0 : break;
222 :
223 : case VCLEVENT_LISTBOX_ITEMADDED:
224 : case VCLEVENT_COMBOBOX_ITEMADDED:
225 : HandleChangedItemList (true, reinterpret_cast<sal_IntPtr>(
226 0 : rVclWindowEvent.GetData()));
227 0 : break;
228 : case VCLEVENT_CONTROL_GETFOCUS:
229 0 : VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
230 0 : if ( m_pListBoxHelper )
231 : {
232 0 : uno::Any aOldValue,
233 0 : aNewValue;
234 0 : sal_uInt16 nPos = m_pListBoxHelper->GetSelectEntryPos();
235 0 : if ( nPos == LISTBOX_ENTRY_NOTFOUND )
236 0 : nPos = m_pListBoxHelper->GetTopEntry();
237 0 : if ( nPos != LISTBOX_ENTRY_NOTFOUND )
238 0 : aNewValue <<= CreateChild(nPos);
239 :
240 : NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
241 : aOldValue,
242 0 : aNewValue );
243 : }
244 0 : break;
245 :
246 : default:
247 0 : VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
248 0 : }
249 0 : }
250 : // -----------------------------------------------------------------------------
251 :
252 : /** To find out which item is currently selected and to update the SELECTED
253 : state of the associated accessibility objects accordingly we exploit the
254 : fact that the
255 : */
256 0 : void VCLXAccessibleList::UpdateSelection (OUString sTextOfSelectedItem)
257 : {
258 0 : if ( m_aBoxType == COMBOBOX )
259 : {
260 0 : ComboBox* pBox = static_cast<ComboBox*>(GetWindow());
261 0 : if ( pBox != NULL )
262 : {
263 : // Find the index of the selected item inside the VCL control...
264 0 : sal_uInt16 nIndex = pBox->GetEntryPos(sTextOfSelectedItem);
265 : // ...and then find the associated accessibility object.
266 0 : if ( nIndex == LISTBOX_ENTRY_NOTFOUND )
267 0 : nIndex = 0;
268 0 : UpdateSelection_Impl(nIndex);
269 : }
270 : }
271 0 : }
272 : // -----------------------------------------------------------------------------
273 :
274 0 : void VCLXAccessibleList::adjustEntriesIndexInParent(ListItems::iterator& _aBegin,::std::mem_fun_t<bool,VCLXAccessibleListItem>& _rMemFun)
275 : {
276 0 : ListItems::iterator aIter = _aBegin;
277 0 : ListItems::iterator aEnd = m_aAccessibleChildren.end();
278 : // adjust the index inside the VCLXAccessibleListItem
279 0 : for (;aIter != aEnd ; ++aIter)
280 : {
281 0 : Reference< XAccessible > xHold = *aIter;
282 0 : VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get());
283 0 : if ( pItem )
284 0 : _rMemFun(pItem);
285 0 : }
286 0 : }
287 : // -----------------------------------------------------------------------------
288 :
289 0 : Reference<XAccessible> VCLXAccessibleList::CreateChild (sal_Int32 i)
290 : {
291 0 : Reference<XAccessible> xChild;
292 :
293 0 : sal_uInt16 nPos = static_cast<sal_uInt16>(i);
294 0 : if ( nPos >= m_aAccessibleChildren.size() )
295 : {
296 0 : m_aAccessibleChildren.resize(nPos + 1);
297 :
298 : // insert into the container
299 0 : xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this);
300 0 : m_aAccessibleChildren[nPos] = xChild;
301 : }
302 : else
303 : {
304 0 : xChild = m_aAccessibleChildren[nPos];
305 : // check if position is empty and can be used else we have to adjust all entries behind this
306 0 : if ( xChild.is() )
307 : {
308 0 : ListItems::iterator aIter = m_aAccessibleChildren.begin() + nPos;
309 0 : ::std::mem_fun_t<bool, VCLXAccessibleListItem> aTemp(&VCLXAccessibleListItem::IncrementIndexInParent);
310 0 : adjustEntriesIndexInParent( aIter, aTemp);
311 : }
312 : else
313 : {
314 0 : xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this);
315 0 : m_aAccessibleChildren[nPos] = xChild;
316 : }
317 : }
318 :
319 0 : if ( xChild.is() )
320 : {
321 : // Just add the SELECTED state.
322 0 : bool bNowSelected = false;
323 0 : if ( m_pListBoxHelper )
324 0 : bNowSelected = m_pListBoxHelper->IsEntryPosSelected ((sal_uInt16)i);
325 0 : VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >(xChild.get());
326 0 : pItem->SetSelected( bNowSelected );
327 :
328 : // Set the child's VISIBLE state.
329 0 : UpdateVisibleLineCount();
330 0 : sal_uInt16 nTopEntry = 0;
331 0 : if ( m_pListBoxHelper )
332 0 : nTopEntry = m_pListBoxHelper->GetTopEntry();
333 0 : bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) );
334 0 : pItem->SetVisible( m_bVisible && bVisible );
335 : }
336 :
337 0 : return xChild;
338 : }
339 : // -----------------------------------------------------------------------------
340 :
341 0 : void VCLXAccessibleList::HandleChangedItemList (bool bItemInserted, sal_Int32 nIndex)
342 : {
343 0 : if ( !bItemInserted )
344 : {
345 0 : if ( nIndex == -1 ) // special handling here
346 : {
347 0 : clearItems();
348 : }
349 : else
350 : {
351 0 : if ( nIndex >= 0 && static_cast<sal_uInt16>(nIndex) < m_aAccessibleChildren.size() )
352 : {
353 0 : ListItems::iterator aIter = m_aAccessibleChildren.erase(m_aAccessibleChildren.begin()+nIndex);
354 0 : ::std::mem_fun_t<bool, VCLXAccessibleListItem> aTemp(&VCLXAccessibleListItem::DecrementIndexInParent);
355 0 : adjustEntriesIndexInParent( aIter, aTemp );
356 : }
357 : }
358 : }
359 : else
360 0 : getAccessibleChild(nIndex);
361 :
362 : NotifyAccessibleEvent (
363 : AccessibleEventId::INVALIDATE_ALL_CHILDREN,
364 0 : Any(), Any());
365 0 : }
366 : // -----------------------------------------------------------------------------
367 :
368 0 : IMPLEMENT_FORWARD_XINTERFACE2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE)
369 0 : IMPLEMENT_FORWARD_XTYPEPROVIDER2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE)
370 :
371 : //===== XAccessible =========================================================
372 :
373 : Reference<XAccessibleContext> SAL_CALL
374 0 : VCLXAccessibleList::getAccessibleContext (void)
375 : throw (RuntimeException)
376 : {
377 0 : return this;
378 : }
379 : // -----------------------------------------------------------------------------
380 :
381 : //===== XAccessibleContext ==================================================
382 :
383 0 : sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleChildCount (void)
384 : throw (RuntimeException)
385 : {
386 0 : SolarMutexGuard aSolarGuard;
387 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
388 :
389 0 : sal_Int32 nCount = 0;
390 0 : if ( m_pListBoxHelper )
391 0 : nCount = m_pListBoxHelper->GetEntryCount();
392 :
393 0 : return nCount;
394 : }
395 : // -----------------------------------------------------------------------------
396 :
397 0 : Reference<XAccessible> SAL_CALL VCLXAccessibleList::getAccessibleChild (sal_Int32 i)
398 : throw (IndexOutOfBoundsException, RuntimeException)
399 : {
400 0 : SolarMutexGuard aSolarGuard;
401 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
402 :
403 0 : if ( i < 0 || i >= getAccessibleChildCount() )
404 0 : throw IndexOutOfBoundsException();
405 :
406 0 : Reference< XAccessible > xChild;
407 : // search for the child
408 0 : if ( static_cast<sal_uInt16>(i) >= m_aAccessibleChildren.size() )
409 0 : xChild = CreateChild (i);
410 : else
411 : {
412 0 : xChild = m_aAccessibleChildren[i];
413 0 : if ( !xChild.is() )
414 0 : xChild = CreateChild (i);
415 : }
416 : OSL_ENSURE( xChild.is(), "VCLXAccessibleList::getAccessibleChild: returning empty child!" );
417 0 : return xChild;
418 : }
419 : // -----------------------------------------------------------------------------
420 :
421 0 : Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleParent( )
422 : throw (RuntimeException)
423 : {
424 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
425 :
426 0 : return m_xParent;
427 : }
428 : // -----------------------------------------------------------------------------
429 :
430 0 : sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleIndexInParent (void)
431 : throw (::com::sun::star::uno::RuntimeException)
432 : {
433 0 : if (m_nIndexInParent != DEFAULT_INDEX_IN_PARENT)
434 0 : return m_nIndexInParent;
435 : else
436 0 : return VCLXAccessibleComponent::getAccessibleIndexInParent();
437 : }
438 : // -----------------------------------------------------------------------------
439 :
440 0 : sal_Int16 SAL_CALL VCLXAccessibleList::getAccessibleRole (void)
441 : throw (RuntimeException)
442 : {
443 0 : return AccessibleRole::LIST;
444 : }
445 : // -----------------------------------------------------------------------------
446 :
447 : //===== XAccessibleComponent ================================================
448 :
449 0 : sal_Bool SAL_CALL VCLXAccessibleList::contains( const awt::Point& rPoint ) throw (RuntimeException)
450 : {
451 0 : SolarMutexGuard aSolarGuard;
452 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
453 :
454 0 : sal_Bool bInside = sal_False;
455 :
456 0 : Window* pListBox = GetWindow();
457 0 : if ( pListBox )
458 : {
459 0 : Rectangle aRect( Point(0,0), pListBox->GetSizePixel() );
460 0 : bInside = aRect.IsInside( VCLPoint( rPoint ) );
461 : }
462 :
463 0 : return bInside;
464 : }
465 : // -----------------------------------------------------------------------------
466 :
467 0 : Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleAt( const awt::Point& rPoint )
468 : throw (RuntimeException)
469 : {
470 0 : SolarMutexGuard aSolarGuard;
471 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
472 :
473 0 : Reference< XAccessible > xChild;
474 0 : if ( m_pListBoxHelper )
475 : {
476 0 : UpdateVisibleLineCount();
477 0 : if ( contains( rPoint ) && m_nVisibleLineCount > 0 )
478 : {
479 0 : Point aPos = VCLPoint( rPoint );
480 0 : sal_uInt16 nEndPos = m_pListBoxHelper->GetTopEntry() + (sal_uInt16)m_nVisibleLineCount;
481 0 : for ( sal_uInt16 i = m_pListBoxHelper->GetTopEntry(); i < nEndPos; ++i )
482 : {
483 0 : if ( m_pListBoxHelper->GetBoundingRectangle(i).IsInside( aPos ) )
484 : {
485 0 : xChild = getAccessibleChild(i);
486 0 : break;
487 : }
488 : }
489 : }
490 : }
491 :
492 0 : return xChild;
493 : }
494 : // -----------------------------------------------------------------------------
495 :
496 : //===== XServiceInfo ==========================================================
497 :
498 0 : OUString VCLXAccessibleList::getImplementationName (void)
499 : throw (RuntimeException)
500 : {
501 0 : return OUString( "com.sun.star.comp.toolkit.AccessibleList" );
502 : }
503 : // -----------------------------------------------------------------------------
504 :
505 0 : Sequence< OUString > VCLXAccessibleList::getSupportedServiceNames (void)
506 : throw (RuntimeException)
507 : {
508 0 : Sequence< OUString > aNames = VCLXAccessibleComponent::getSupportedServiceNames();
509 0 : sal_Int32 nLength = aNames.getLength();
510 0 : aNames.realloc( nLength + 1 );
511 0 : aNames[nLength] = "com.sun.star.accessibility.AccessibleList";
512 0 : return aNames;
513 : }
514 : // -----------------------------------------------------------------------------
515 :
516 0 : void VCLXAccessibleList::UpdateVisibleLineCount()
517 : {
518 0 : if ( m_pListBoxHelper )
519 : {
520 0 : if ( (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN )
521 0 : m_nVisibleLineCount = m_pListBoxHelper->GetDisplayLineCount();
522 : else
523 : {
524 0 : sal_uInt16 nCols = 0,
525 0 : nLines = 0;
526 0 : m_pListBoxHelper->GetMaxVisColumnsAndLines (nCols, nLines);
527 0 : m_nVisibleLineCount = nLines;
528 : }
529 : }
530 0 : }
531 :
532 : // -----------------------------------------------------------------------------
533 0 : void VCLXAccessibleList::UpdateEntryRange_Impl()
534 : {
535 0 : SolarMutexGuard aSolarGuard;
536 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
537 :
538 0 : sal_Int32 nTop = m_nLastTopEntry;
539 :
540 0 : if ( m_pListBoxHelper )
541 0 : nTop = m_pListBoxHelper->GetTopEntry();
542 0 : if ( nTop != m_nLastTopEntry )
543 : {
544 0 : UpdateVisibleLineCount();
545 0 : sal_Int32 nBegin = Min( m_nLastTopEntry, nTop );
546 0 : sal_Int32 nEnd = Max( m_nLastTopEntry + m_nVisibleLineCount, nTop + m_nVisibleLineCount );
547 0 : for (sal_uInt16 i = static_cast<sal_uInt16>(nBegin); (i <= static_cast<sal_uInt16>(nEnd)); ++i)
548 : {
549 0 : sal_Bool bVisible = ( i >= nTop && i < ( nTop + m_nVisibleLineCount ) );
550 0 : Reference< XAccessible > xHold;
551 0 : if ( i < m_aAccessibleChildren.size() )
552 0 : xHold = m_aAccessibleChildren[i];
553 0 : else if ( bVisible )
554 0 : xHold = CreateChild(i);
555 :
556 0 : if ( xHold.is() )
557 0 : static_cast< VCLXAccessibleListItem* >( xHold.get() )->SetVisible( m_bVisible && bVisible );
558 0 : }
559 : }
560 :
561 0 : m_nLastTopEntry = nTop;
562 0 : }
563 : // -----------------------------------------------------------------------------
564 0 : sal_Bool VCLXAccessibleList::checkEntrySelected(sal_uInt16 _nPos,Any& _rNewValue,Reference< XAccessible >& _rxNewAcc)
565 : {
566 : OSL_ENSURE(m_pListBoxHelper,"Helper is not valid!");
567 0 : sal_Bool bNowSelected = sal_False;
568 0 : if ( m_pListBoxHelper )
569 : {
570 0 : bNowSelected = m_pListBoxHelper->IsEntryPosSelected (_nPos);
571 0 : if ( bNowSelected )
572 : {
573 0 : _rxNewAcc = CreateChild(_nPos);
574 0 : _rNewValue <<= _rxNewAcc;
575 : }
576 : }
577 0 : return bNowSelected;
578 : }
579 : // -----------------------------------------------------------------------------
580 :
581 0 : void VCLXAccessibleList::UpdateSelection_Impl(sal_uInt16)
582 : {
583 0 : uno::Any aOldValue, aNewValue;
584 :
585 : {
586 0 : SolarMutexGuard aSolarGuard;
587 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
588 0 : Reference< XAccessible > xNewAcc;
589 :
590 0 : if ( m_pListBoxHelper )
591 : {
592 0 : sal_uInt16 i=0;
593 0 : for ( ListItems::iterator aIter = m_aAccessibleChildren.begin();
594 0 : aIter != m_aAccessibleChildren.end(); ++aIter,++i)
595 : {
596 0 : Reference< XAccessible > xHold = *aIter;
597 0 : if ( xHold.is() )
598 : {
599 0 : VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() );
600 : // Retrieve the item's index from the list entry.
601 0 : sal_Bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i);
602 :
603 0 : if ( bNowSelected && !pItem->IsSelected() )
604 : {
605 0 : xNewAcc = *aIter;
606 0 : aNewValue <<= xNewAcc;
607 : }
608 0 : else if ( pItem->IsSelected() )
609 0 : m_nLastSelectedPos = i;
610 :
611 0 : pItem->SetSelected( bNowSelected );
612 : }
613 : else
614 : { // it could happen that a child was not created before
615 0 : checkEntrySelected(i,aNewValue,xNewAcc);
616 : }
617 0 : }
618 0 : sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount();
619 0 : if ( i < nCount ) // here we have to check the if any other listbox entry is selected
620 : {
621 0 : for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i )
622 : ;
623 : }
624 0 : if ( xNewAcc.is() && GetWindow()->HasFocus() )
625 : {
626 0 : if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND )
627 0 : aOldValue <<= getAccessibleChild( (sal_Int32)m_nLastSelectedPos );
628 0 : aNewValue <<= xNewAcc;
629 : }
630 0 : }
631 : }
632 :
633 0 : if ( aNewValue.hasValue() || aOldValue.hasValue() )
634 : NotifyAccessibleEvent(
635 : AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
636 : aOldValue,
637 0 : aNewValue );
638 :
639 0 : NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, Any(), Any() );
640 0 : }
641 :
642 : // -----------------------------------------------------------------------------
643 : // XAccessibleSelection
644 : // -----------------------------------------------------------------------------
645 0 : void SAL_CALL VCLXAccessibleList::selectAccessibleChild( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException)
646 : {
647 0 : sal_Bool bNotify = sal_False;
648 :
649 : {
650 0 : SolarMutexGuard aSolarGuard;
651 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
652 :
653 0 : if ( m_pListBoxHelper )
654 : {
655 0 : checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False);
656 :
657 0 : m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nChildIndex, sal_True );
658 : // call the select handler, don't handle events in this time
659 0 : m_bDisableProcessEvent = true;
660 0 : m_pListBoxHelper->Select();
661 0 : m_bDisableProcessEvent = false;
662 0 : bNotify = sal_True;
663 0 : }
664 : }
665 :
666 0 : if ( bNotify )
667 0 : UpdateSelection_Impl();
668 0 : }
669 : // -----------------------------------------------------------------------------
670 0 : sal_Bool SAL_CALL VCLXAccessibleList::isAccessibleChildSelected( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException)
671 : {
672 0 : SolarMutexGuard aSolarGuard;
673 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
674 :
675 0 : sal_Bool bRet = sal_False;
676 0 : if ( m_pListBoxHelper )
677 : {
678 0 : checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False);
679 :
680 0 : bRet = m_pListBoxHelper->IsEntryPosSelected( (sal_uInt16)nChildIndex );
681 : }
682 0 : return bRet;
683 : }
684 : // -----------------------------------------------------------------------------
685 0 : void SAL_CALL VCLXAccessibleList::clearAccessibleSelection( ) throw (RuntimeException)
686 : {
687 0 : sal_Bool bNotify = sal_False;
688 :
689 : {
690 0 : SolarMutexGuard aSolarGuard;
691 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
692 :
693 0 : if ( m_pListBoxHelper )
694 : {
695 0 : m_pListBoxHelper->SetNoSelection();
696 0 : bNotify = sal_True;
697 0 : }
698 : }
699 :
700 0 : if ( bNotify )
701 0 : UpdateSelection_Impl();
702 0 : }
703 : // -----------------------------------------------------------------------------
704 0 : void SAL_CALL VCLXAccessibleList::selectAllAccessibleChildren( ) throw (RuntimeException)
705 : {
706 0 : sal_Bool bNotify = sal_False;
707 :
708 : {
709 0 : SolarMutexGuard aSolarGuard;
710 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
711 :
712 0 : if ( m_pListBoxHelper )
713 : {
714 0 : sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount();
715 0 : for ( sal_uInt16 i = 0; i < nCount; ++i )
716 0 : m_pListBoxHelper->SelectEntryPos( i, sal_True );
717 : // call the select handler, don't handle events in this time
718 0 : m_bDisableProcessEvent = true;
719 0 : m_pListBoxHelper->Select();
720 0 : m_bDisableProcessEvent = false;
721 0 : bNotify = sal_True;
722 0 : }
723 : }
724 :
725 0 : if ( bNotify )
726 0 : UpdateSelection_Impl();
727 0 : }
728 : // -----------------------------------------------------------------------------
729 0 : sal_Int32 SAL_CALL VCLXAccessibleList::getSelectedAccessibleChildCount( ) throw (RuntimeException)
730 : {
731 0 : SolarMutexGuard aSolarGuard;
732 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
733 :
734 0 : sal_Int32 nCount = 0;
735 0 : if ( m_pListBoxHelper )
736 0 : nCount = m_pListBoxHelper->GetSelectEntryCount();
737 0 : return nCount;
738 : }
739 : // -----------------------------------------------------------------------------
740 0 : Reference< XAccessible > SAL_CALL VCLXAccessibleList::getSelectedAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException)
741 : {
742 0 : SolarMutexGuard aSolarGuard;
743 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
744 :
745 0 : if ( m_pListBoxHelper )
746 : {
747 0 : checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_True);
748 0 : return getAccessibleChild( (sal_Int32)m_pListBoxHelper->GetSelectEntryPos( (sal_uInt16)nSelectedChildIndex ) );
749 : }
750 :
751 0 : return NULL;
752 : }
753 : // -----------------------------------------------------------------------------
754 0 : void SAL_CALL VCLXAccessibleList::deselectAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException)
755 : {
756 0 : sal_Bool bNotify = sal_False;
757 :
758 : {
759 0 : SolarMutexGuard aSolarGuard;
760 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
761 :
762 0 : if ( m_pListBoxHelper )
763 : {
764 0 : checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_False);
765 :
766 0 : m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nSelectedChildIndex, sal_False );
767 : // call the select handler, don't handle events in this time
768 0 : m_bDisableProcessEvent = true;
769 0 : m_pListBoxHelper->Select();
770 0 : m_bDisableProcessEvent = false;
771 0 : bNotify = sal_True;
772 0 : }
773 : }
774 :
775 0 : if ( bNotify )
776 0 : UpdateSelection_Impl();
777 0 : }
778 : // -----------------------------------------------------------------------------
779 0 : awt::Rectangle VCLXAccessibleList::implGetBounds() throw (uno::RuntimeException)
780 : {
781 0 : awt::Rectangle aBounds ( 0, 0, 0, 0 );
782 0 : if ( m_pListBoxHelper
783 0 : && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN )
784 : {
785 0 : if ( m_pListBoxHelper->IsInDropDown() )
786 0 : aBounds = AWTRectangle(m_pListBoxHelper->GetDropDownPosSizePixel());
787 : }
788 : else
789 : {
790 : // a list has the same bounds as his parent but starts at (0,0)
791 0 : aBounds = VCLXAccessibleComponent::implGetBounds();
792 0 : aBounds.X = 0;
793 0 : aBounds.Y = 0;
794 0 : if ( m_aBoxType == COMBOBOX )
795 : {
796 0 : ComboBox* pBox = static_cast<ComboBox*>(GetWindow());
797 0 : if ( pBox )
798 : {
799 0 : Size aSize = pBox->GetSubEdit()->GetSizePixel();
800 0 : aBounds.X += aSize.Height();
801 0 : aBounds.Y += aSize.Width();
802 0 : aBounds.Height -= aSize.Height();
803 0 : aBounds.Width -= aSize.Width();
804 : }
805 : }
806 : }
807 0 : return aBounds;
808 : }
809 : // -----------------------------------------------------------------------------
810 :
811 0 : awt::Point VCLXAccessibleList::getLocationOnScreen( ) throw (uno::RuntimeException)
812 : {
813 0 : SolarMutexGuard aSolarGuard;
814 0 : ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
815 :
816 0 : awt::Point aPos;
817 0 : if ( m_pListBoxHelper
818 0 : && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN )
819 : {
820 0 : if ( m_pListBoxHelper->IsInDropDown() )
821 0 : aPos = AWTPoint(m_pListBoxHelper->GetDropDownPosSizePixel().TopLeft());
822 : }
823 : else
824 : {
825 0 : aPos = VCLXAccessibleComponent::getLocationOnScreen();
826 0 : if ( m_aBoxType == COMBOBOX )
827 : {
828 0 : ComboBox* pBox = static_cast<ComboBox*>(GetWindow());
829 0 : if ( pBox )
830 : {
831 0 : aPos.X += pBox->GetSubEdit()->GetSizePixel().Height();
832 0 : aPos.Y += pBox->GetSubEdit()->GetSizePixel().Width();
833 : }
834 : }
835 : }
836 0 : return aPos;
837 : }
838 : // -----------------------------------------------------------------------------
839 :
840 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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