1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_accessibility.hxx" 26 #include <accessibility/standard/vclxaccessiblelist.hxx> 27 #include <accessibility/standard/vclxaccessiblelistitem.hxx> 28 #include <accessibility/helper/listboxhelper.hxx> 29 30 #include <unotools/accessiblestatesethelper.hxx> 31 #include <com/sun/star/accessibility/AccessibleStateType.hpp> 32 #include <com/sun/star/accessibility/AccessibleEventId.hpp> 33 #include <com/sun/star/accessibility/AccessibleRole.hpp> 34 #include <vcl/svapp.hxx> 35 #include <vcl/combobox.hxx> 36 #include <vcl/lstbox.hxx> 37 #include <toolkit/helper/convert.hxx> 38 39 #ifndef _UTL_ACCESSIBLERELATIONSETHELPER_HXX_ 40 #include <unotools/accessiblerelationsethelper.hxx> 41 #endif 42 #ifndef _COM_SUN_STAR_ACCESSIBILITY_ACCESSIBLERELATIONTYPE_HPP_ 43 #include <com/sun/star/accessibility/AccessibleRelationType.hpp> 44 #endif 45 using namespace ::com::sun::star; 46 using namespace ::com::sun::star::uno; 47 using namespace ::com::sun::star::lang; 48 using namespace ::com::sun::star::beans; 49 using namespace ::com::sun::star::accessibility; 50 using namespace ::accessibility; 51 52 namespace 53 { 54 void checkSelection_Impl( sal_Int32 _nIndex, const IComboListBoxHelper& _rListBox, sal_Bool bSelected ) 55 throw (::com::sun::star::lang::IndexOutOfBoundsException) 56 { 57 sal_Int32 nCount = bSelected ? (sal_Int32)_rListBox.GetSelectEntryCount() 58 : (sal_Int32)_rListBox.GetEntryCount(); 59 if ( _nIndex < 0 || _nIndex >= nCount ) 60 throw ::com::sun::star::lang::IndexOutOfBoundsException(); 61 } 62 } 63 64 VCLXAccessibleList::VCLXAccessibleList (VCLXWindow* pVCLWindow, BoxType aBoxType, 65 const Reference< XAccessible >& _xParent) 66 : VCLXAccessibleComponent (pVCLWindow), 67 m_aBoxType (aBoxType), 68 m_nVisibleLineCount (0), 69 m_nIndexInParent (DEFAULT_INDEX_IN_PARENT), 70 m_nLastTopEntry ( 0 ), 71 m_nLastSelectedPos ( LISTBOX_ENTRY_NOTFOUND ), 72 m_bDisableProcessEvent ( false ), 73 m_bVisible ( true ), 74 m_nCurSelectedPos ( LISTBOX_ENTRY_NOTFOUND ), 75 m_xParent ( _xParent ) 76 { 77 // Because combo boxes and list boxes have the no common interface for 78 // methods with identical signature we have to write down twice the 79 // same code. 80 switch (m_aBoxType) 81 { 82 case COMBOBOX: 83 { 84 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 85 if ( pBox != NULL ) 86 m_pListBoxHelper = new VCLListBoxHelper<ComboBox> (*pBox); 87 break; 88 } 89 90 case LISTBOX: 91 { 92 ListBox* pBox = static_cast<ListBox*>(GetWindow()); 93 if ( pBox != NULL ) 94 m_pListBoxHelper = new VCLListBoxHelper<ListBox> (*pBox); 95 break; 96 } 97 } 98 UpdateVisibleLineCount(); 99 m_nCurSelectedPos=m_pListBoxHelper->GetSelectEntryPos(); 100 101 sal_uInt16 nCount = static_cast<sal_uInt16>(getAccessibleChildCount()); 102 m_aAccessibleChildren.reserve(nCount); 103 } 104 // ----------------------------------------------------------------------------- 105 106 VCLXAccessibleList::~VCLXAccessibleList (void) 107 { 108 delete m_pListBoxHelper; 109 } 110 // ----------------------------------------------------------------------------- 111 112 void VCLXAccessibleList::SetIndexInParent (sal_Int32 nIndex) 113 { 114 m_nIndexInParent = nIndex; 115 } 116 // ----------------------------------------------------------------------------- 117 118 void SAL_CALL VCLXAccessibleList::disposing (void) 119 { 120 VCLXAccessibleComponent::disposing(); 121 122 // Dispose all items in the list. 123 clearItems(); 124 125 delete m_pListBoxHelper; 126 m_pListBoxHelper = NULL; 127 } 128 // ----------------------------------------------------------------------------- 129 130 void VCLXAccessibleList::clearItems() 131 { 132 // ListItems::iterator aEnd = m_aAccessibleChildren.end(); 133 // for (ListItems::iterator aIter = m_aAccessibleChildren.begin(); aIter != aEnd; ++aIter) 134 // ::comphelper::disposeComponent(*aIter); 135 136 // Clear the list itself and delete all the rest. 137 ListItems().swap(m_aAccessibleChildren); // clear and minimize 138 } 139 // ----------------------------------------------------------------------------- 140 141 void VCLXAccessibleList::FillAccessibleStateSet (utl::AccessibleStateSetHelper& rStateSet) 142 { 143 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 144 145 VCLXAccessibleComponent::FillAccessibleStateSet( rStateSet ); 146 // check if our list should be visible 147 if ( m_pListBoxHelper 148 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN 149 && !m_pListBoxHelper->IsInDropDown() ) 150 { 151 rStateSet.RemoveState (AccessibleStateType::VISIBLE); 152 rStateSet.RemoveState (AccessibleStateType::SHOWING); 153 m_bVisible = false; 154 } 155 156 // Both the combo box and list box are handled identical in the 157 // following but for some reason they don't have a common interface for 158 // the methods used. 159 if ( m_pListBoxHelper ) 160 { 161 if ( m_pListBoxHelper->IsMultiSelectionEnabled() ) 162 rStateSet.AddState( AccessibleStateType::MULTI_SELECTABLE); 163 rStateSet.AddState (AccessibleStateType::FOCUSABLE); 164 // All children are transient. 165 rStateSet.AddState (AccessibleStateType::MANAGES_DESCENDANTS); 166 } 167 } 168 // ----------------------------------------------------------------------------- 169 void VCLXAccessibleList::notifyVisibleStates(sal_Bool _bSetNew ) 170 { 171 m_bVisible = _bSetNew ? true : false; 172 Any aOldValue, aNewValue; 173 (_bSetNew ? aNewValue : aOldValue ) <<= AccessibleStateType::VISIBLE; 174 NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue ); 175 (_bSetNew ? aNewValue : aOldValue ) <<= AccessibleStateType::SHOWING; 176 NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue ); 177 178 ListItems::iterator aIter = m_aAccessibleChildren.begin(); 179 ListItems::iterator aEnd = m_aAccessibleChildren.end(); 180 UpdateVisibleLineCount(); 181 // adjust the index inside the VCLXAccessibleListItem 182 for (;aIter != aEnd ; ++aIter) 183 { 184 Reference< XAccessible > xHold = *aIter; 185 VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get()); 186 if ( pItem ) 187 { 188 sal_uInt16 nTopEntry = 0; 189 if ( m_pListBoxHelper ) 190 nTopEntry = m_pListBoxHelper->GetTopEntry(); 191 sal_uInt16 nPos = (sal_uInt16)(aIter - m_aAccessibleChildren.begin()); 192 sal_Bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) ); 193 pItem->SetVisible( m_bVisible && bVisible ); 194 } 195 196 } 197 } 198 // ----------------------------------------------------------------------------- 199 void VCLXAccessibleList::UpdateSelection_Acc (::rtl::OUString sTextOfSelectedItem, bool b_IsDropDownList) 200 { 201 if ( m_aBoxType == COMBOBOX ) 202 { 203 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 204 if ( pBox != NULL ) 205 { 206 // Find the index of the selected item inside the VCL control... 207 sal_uInt16 nIndex = pBox->GetEntryPos (XubString(sTextOfSelectedItem)); 208 // ...and then find the associated accessibility object. 209 if ( nIndex == LISTBOX_ENTRY_NOTFOUND ) 210 nIndex = 0; 211 UpdateSelection_Impl_Acc(b_IsDropDownList); 212 } 213 } 214 } 215 216 // ----------------------------------------------------------------------------- 217 void VCLXAccessibleList::UpdateSelection_Impl_Acc(bool b_IsDropDownList) 218 { 219 uno::Any aOldValue, aNewValue; 220 VCLXAccessibleListItem* pCurItem =NULL; 221 222 { 223 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 224 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 225 Reference< XAccessible > xNewAcc; 226 if ( m_pListBoxHelper ) 227 { 228 sal_uInt16 i=0; 229 m_nCurSelectedPos = LISTBOX_ENTRY_NOTFOUND; 230 for ( ListItems::iterator aIter = m_aAccessibleChildren.begin(); 231 aIter != m_aAccessibleChildren.end(); ++aIter,++i) 232 { 233 Reference< XAccessible > xHold = *aIter; 234 if ( xHold.is() ) 235 { 236 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() ); 237 // Retrieve the item's index from the list entry. 238 sal_Bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i); 239 if (bNowSelected) 240 m_nCurSelectedPos = i; 241 242 if ( bNowSelected && !pItem->IsSelected() ) 243 { 244 xNewAcc = *aIter; 245 aNewValue <<= xNewAcc; 246 247 pCurItem = pItem; 248 249 } 250 else if ( pItem->IsSelected() ) 251 m_nLastSelectedPos = i; 252 253 pItem->SetSelected( bNowSelected ); 254 } 255 else 256 { // it could happen that a child was not created before 257 checkEntrySelected(i,aNewValue,xNewAcc); 258 } 259 } 260 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 261 if ( i < nCount ) // here we have to check the if any other listbox entry is selected 262 { 263 for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i ) 264 ; 265 } 266 if ( xNewAcc.is() && GetWindow()->HasFocus() ) 267 { 268 if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND ) 269 aOldValue <<= getAccessibleChild( (sal_Int32)m_nLastSelectedPos ); 270 aNewValue <<= xNewAcc; 271 } 272 } 273 } 274 if (m_aBoxType == COMBOBOX && b_IsDropDownList) 275 { 276 //VCLXAccessibleDropDownComboBox 277 //when in list is dropped down, xText = NULL 278 if (m_pListBoxHelper->IsInDropDown()) 279 { 280 if ( aNewValue.hasValue() || aOldValue.hasValue() ) 281 { 282 NotifyAccessibleEvent( 283 AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 284 aOldValue, 285 aNewValue ); 286 287 NotifyListItem(aNewValue); 288 289 } 290 } 291 } 292 else if (m_aBoxType == COMBOBOX && !b_IsDropDownList) 293 { 294 //VCLXAccessibleComboBox 295 NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, uno::Any(), uno::Any() ); 296 } 297 else if (m_aBoxType == LISTBOX && b_IsDropDownList) 298 { 299 //VCLXAccessibleDropdownListBox 300 //when in list is dropped down, xText = NULL 301 if (m_pListBoxHelper->IsInDropDown()) 302 { 303 if ( aNewValue.hasValue() || aOldValue.hasValue() ) 304 { 305 NotifyAccessibleEvent( 306 AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 307 aOldValue, 308 aNewValue ); 309 310 NotifyListItem(aNewValue); 311 } 312 } 313 } 314 else if (m_aBoxType == LISTBOX && !b_IsDropDownList) 315 { 316 //VCLXAccessibleListBox, xText = NULL. 317 318 319 if ( aNewValue.hasValue()) 320 { 321 NotifyListItem(aNewValue); 322 } 323 } 324 } 325 void VCLXAccessibleList::NotifyListItem(::com::sun::star::uno::Any& val) 326 { 327 Reference< XAccessible > xCurItem; 328 val >>= xCurItem; 329 if (xCurItem.is()) 330 { 331 VCLXAccessibleListItem* pCurItem = static_cast< VCLXAccessibleListItem* >(xCurItem.get()); 332 if (pCurItem) 333 { 334 pCurItem->NotifyAccessibleEvent(AccessibleEventId::SELECTION_CHANGED,Any(),Any()); 335 } 336 } 337 } 338 339 340 void VCLXAccessibleList::UpdateFocus_Impl_Acc (sal_uInt16 nPos ,bool b_IsDropDownList) 341 { 342 if (!(m_aBoxType == LISTBOX && !b_IsDropDownList)) 343 { 344 return ; 345 } 346 Reference<XAccessible> xChild= CreateChild(nPos); 347 if ( !xChild.is() ) 348 { 349 return ; 350 } 351 m_nCurSelectedPos = nPos; 352 uno::Any aOldValue, aNewValue; 353 aNewValue <<= xChild; 354 355 NotifyAccessibleEvent( 356 AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 357 aOldValue, 358 aNewValue ); 359 } 360 361 // ----------------------------------------------------------------------------- 362 void VCLXAccessibleList::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent, bool b_IsDropDownList) 363 { 364 switch ( rVclWindowEvent.GetId() ) 365 { 366 case VCLEVENT_LISTBOX_SELECT: 367 if ( !m_bDisableProcessEvent ) 368 UpdateSelection_Impl_Acc(b_IsDropDownList); 369 break; 370 case VCLEVENT_LISTBOX_FOCUSITEMCHANGED: 371 if ( !m_bDisableProcessEvent ) 372 UpdateFocus_Impl_Acc((sal_uInt16)reinterpret_cast<sal_uIntPtr>(rVclWindowEvent.GetData()),b_IsDropDownList); 373 break; 374 case VCLEVENT_WINDOW_GETFOCUS: 375 break; 376 case VCLEVENT_CONTROL_GETFOCUS: 377 { 378 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 379 if (m_aBoxType == COMBOBOX && b_IsDropDownList) 380 { 381 //VCLXAccessibleDropDownComboBox 382 } 383 else if (m_aBoxType == LISTBOX && b_IsDropDownList) 384 { 385 } 386 else if ( m_aBoxType == LISTBOX && !b_IsDropDownList) 387 { 388 if ( m_pListBoxHelper ) 389 { 390 uno::Any aOldValue, 391 aNewValue; 392 sal_uInt16 nPos = m_nCurSelectedPos; //m_pListBoxHelper->GetSelectEntryPos(); 393 394 if ( nPos == LISTBOX_ENTRY_NOTFOUND ) 395 nPos = m_pListBoxHelper->GetTopEntry(); 396 if ( nPos != LISTBOX_ENTRY_NOTFOUND ) 397 aNewValue <<= CreateChild(nPos); 398 NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 399 aOldValue, 400 aNewValue ); 401 } 402 } 403 } 404 break; 405 default: 406 break; 407 } 408 409 } 410 // ----------------------------------------------------------------------------- 411 void VCLXAccessibleList::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent) 412 { 413 // Create a reference to this object to prevent an early release of the 414 // listbox (VCLEVENT_OBJECT_DYING). 415 Reference< XAccessible > xTemp = this; 416 417 switch ( rVclWindowEvent.GetId() ) 418 { 419 case VCLEVENT_DROPDOWN_OPEN: 420 notifyVisibleStates(sal_True); 421 break; 422 case VCLEVENT_DROPDOWN_CLOSE: 423 notifyVisibleStates(sal_False); 424 break; 425 case VCLEVENT_LISTBOX_SCROLLED: 426 case VCLEVENT_COMBOBOX_SCROLLED: 427 UpdateEntryRange_Impl(); 428 break; 429 430 // The selection events VCLEVENT_COMBOBOX_SELECT and 431 // VCLEVENT_COMBOBOX_DESELECT are not handled here because here we 432 // have no access to the edit field. Its text is necessary to 433 // identify the currently selected item. 434 435 case VCLEVENT_OBJECT_DYING: 436 { 437 dispose(); 438 439 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 440 break; 441 } 442 443 case VCLEVENT_LISTBOX_ITEMREMOVED: 444 case VCLEVENT_COMBOBOX_ITEMREMOVED: 445 HandleChangedItemList (false, reinterpret_cast<sal_IntPtr>( 446 rVclWindowEvent.GetData())); 447 break; 448 449 case VCLEVENT_LISTBOX_ITEMADDED: 450 case VCLEVENT_COMBOBOX_ITEMADDED: 451 HandleChangedItemList (true, reinterpret_cast<sal_IntPtr>( 452 rVclWindowEvent.GetData())); 453 break; 454 case VCLEVENT_CONTROL_GETFOCUS: 455 { 456 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 457 // Added by IBM Symphony Acc team to handle the list item focus when List control get focus 458 sal_Bool b_IsDropDownList = sal_True; 459 if (m_pListBoxHelper) 460 b_IsDropDownList = ((m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN); 461 if ( m_aBoxType == LISTBOX && !b_IsDropDownList ) 462 { 463 if ( m_pListBoxHelper ) 464 { 465 uno::Any aOldValue, 466 aNewValue; 467 sal_uInt16 nPos = m_nCurSelectedPos; 468 469 if ( nPos == LISTBOX_ENTRY_NOTFOUND ) 470 nPos = m_pListBoxHelper->GetTopEntry(); 471 if ( nPos != LISTBOX_ENTRY_NOTFOUND ) 472 aNewValue <<= CreateChild(nPos); 473 NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 474 aOldValue, 475 aNewValue ); 476 } 477 } 478 } 479 break; 480 481 default: 482 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 483 } 484 } 485 486 void VCLXAccessibleList::FillAccessibleRelationSet( utl::AccessibleRelationSetHelper& rRelationSet ) 487 { 488 ListBox* pBox = static_cast<ListBox*>(GetWindow()); 489 if( m_aBoxType == LISTBOX ) 490 { 491 if (m_pListBoxHelper && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) != WB_DROPDOWN) 492 { 493 uno::Sequence< uno::Reference< uno::XInterface > > aSequence(1); 494 aSequence[0] = pBox->GetAccessible(); 495 rRelationSet.AddRelation( com::sun::star::accessibility::AccessibleRelation( com::sun::star::accessibility::AccessibleRelationType::MEMBER_OF, aSequence ) ); 496 } 497 } 498 else 499 { 500 VCLXAccessibleComponent::FillAccessibleRelationSet(rRelationSet); 501 } 502 } 503 // ----------------------------------------------------------------------------- 504 505 /** To find out which item is currently selected and to update the SELECTED 506 state of the associated accessibility objects accordingly we exploit the 507 fact that the 508 */ 509 void VCLXAccessibleList::UpdateSelection (::rtl::OUString sTextOfSelectedItem) 510 { 511 if ( m_aBoxType == COMBOBOX ) 512 { 513 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 514 if ( pBox != NULL ) 515 { 516 // Find the index of the selected item inside the VCL control... 517 sal_uInt16 nIndex = pBox->GetEntryPos (XubString(sTextOfSelectedItem)); 518 // ...and then find the associated accessibility object. 519 if ( nIndex == LISTBOX_ENTRY_NOTFOUND ) 520 nIndex = 0; 521 UpdateSelection_Impl(nIndex); 522 } 523 } 524 } 525 // ----------------------------------------------------------------------------- 526 527 void VCLXAccessibleList::adjustEntriesIndexInParent(ListItems::iterator& _aBegin,::std::mem_fun_t<bool,VCLXAccessibleListItem>& _rMemFun) 528 { 529 ListItems::iterator aIter = _aBegin; 530 ListItems::iterator aEnd = m_aAccessibleChildren.end(); 531 // adjust the index inside the VCLXAccessibleListItem 532 for (;aIter != aEnd ; ++aIter) 533 { 534 Reference< XAccessible > xHold = *aIter; 535 VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get()); 536 if ( pItem ) 537 _rMemFun(pItem); 538 } 539 } 540 // ----------------------------------------------------------------------------- 541 542 Reference<XAccessible> VCLXAccessibleList::CreateChild (sal_Int32 i) 543 { 544 Reference<XAccessible> xChild; 545 546 sal_uInt16 nPos = static_cast<sal_uInt16>(i); 547 if ( nPos >= m_aAccessibleChildren.size() ) 548 { 549 m_aAccessibleChildren.resize(nPos + 1); 550 551 // insert into the container 552 xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this); 553 m_aAccessibleChildren[nPos] = xChild; 554 } 555 else 556 { 557 xChild = m_aAccessibleChildren[nPos]; 558 // check if position is empty and can be used else we have to adjust all entries behind this 559 if ( !xChild.is() ) 560 { 561 xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this); 562 m_aAccessibleChildren[nPos] = xChild; 563 } 564 } 565 566 if ( xChild.is() ) 567 { 568 // Just add the SELECTED state. 569 sal_Bool bNowSelected = sal_False; 570 if ( m_pListBoxHelper ) 571 bNowSelected = m_pListBoxHelper->IsEntryPosSelected ((sal_uInt16)i); 572 if (bNowSelected) 573 m_nCurSelectedPos = sal_uInt16(i); 574 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >(xChild.get()); 575 pItem->SetSelected( bNowSelected ); 576 577 // Set the child's VISIBLE state. 578 UpdateVisibleLineCount(); 579 sal_uInt16 nTopEntry = 0; 580 if ( m_pListBoxHelper ) 581 nTopEntry = m_pListBoxHelper->GetTopEntry(); 582 sal_Bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) ); 583 pItem->SetVisible( m_bVisible && bVisible ); 584 } 585 586 return xChild; 587 } 588 // ----------------------------------------------------------------------------- 589 590 void VCLXAccessibleList::HandleChangedItemList (bool bItemInserted, sal_Int32 nIndex) 591 { 592 clearItems(); 593 NotifyAccessibleEvent ( 594 AccessibleEventId::INVALIDATE_ALL_CHILDREN, 595 Any(), Any()); 596 } 597 // ----------------------------------------------------------------------------- 598 599 IMPLEMENT_FORWARD_XINTERFACE2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE) 600 IMPLEMENT_FORWARD_XTYPEPROVIDER2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE) 601 602 //===== XAccessible ========================================================= 603 604 Reference<XAccessibleContext> SAL_CALL 605 VCLXAccessibleList::getAccessibleContext (void) 606 throw (RuntimeException) 607 { 608 return this; 609 } 610 // ----------------------------------------------------------------------------- 611 612 //===== XAccessibleContext ================================================== 613 614 sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleChildCount (void) 615 throw (RuntimeException) 616 { 617 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 618 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 619 620 sal_Int32 nCount = 0; 621 if ( m_pListBoxHelper ) 622 nCount = m_pListBoxHelper->GetEntryCount(); 623 624 return nCount; 625 } 626 // ----------------------------------------------------------------------------- 627 628 Reference<XAccessible> SAL_CALL VCLXAccessibleList::getAccessibleChild (sal_Int32 i) 629 throw (IndexOutOfBoundsException, RuntimeException) 630 { 631 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 632 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 633 634 if ( i < 0 || i >= getAccessibleChildCount() ) 635 throw IndexOutOfBoundsException(); 636 637 Reference< XAccessible > xChild; 638 // search for the child 639 if ( i >= static_cast<sal_Int32>(m_aAccessibleChildren.size()) ) 640 xChild = CreateChild (i); 641 else 642 { 643 xChild = m_aAccessibleChildren[i]; 644 if ( !xChild.is() ) 645 xChild = CreateChild (i); 646 } 647 OSL_ENSURE( xChild.is(), "VCLXAccessibleList::getAccessibleChild: returning empty child!" ); 648 return xChild; 649 } 650 // ----------------------------------------------------------------------------- 651 652 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleParent( ) 653 throw (RuntimeException) 654 { 655 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 656 657 return m_xParent; 658 } 659 // ----------------------------------------------------------------------------- 660 661 sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleIndexInParent (void) 662 throw (::com::sun::star::uno::RuntimeException) 663 { 664 if (m_nIndexInParent != DEFAULT_INDEX_IN_PARENT) 665 return m_nIndexInParent; 666 else 667 return VCLXAccessibleComponent::getAccessibleIndexInParent(); 668 } 669 // ----------------------------------------------------------------------------- 670 671 sal_Int16 SAL_CALL VCLXAccessibleList::getAccessibleRole (void) 672 throw (RuntimeException) 673 { 674 return AccessibleRole::LIST; 675 } 676 // ----------------------------------------------------------------------------- 677 678 //===== XAccessibleComponent ================================================ 679 680 sal_Bool SAL_CALL VCLXAccessibleList::contains( const awt::Point& rPoint ) throw (RuntimeException) 681 { 682 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 683 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 684 685 sal_Bool bInside = sal_False; 686 687 Window* pListBox = GetWindow(); 688 if ( pListBox ) 689 { 690 Rectangle aRect( Point(0,0), pListBox->GetSizePixel() ); 691 bInside = aRect.IsInside( VCLPoint( rPoint ) ); 692 } 693 694 return bInside; 695 } 696 // ----------------------------------------------------------------------------- 697 698 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleAt( const awt::Point& rPoint ) 699 throw (RuntimeException) 700 { 701 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 702 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 703 704 Reference< XAccessible > xChild; 705 if ( m_pListBoxHelper ) 706 { 707 UpdateVisibleLineCount(); 708 if ( contains( rPoint ) && m_nVisibleLineCount > 0 ) 709 { 710 Point aPos = VCLPoint( rPoint ); 711 sal_uInt16 nEndPos = m_pListBoxHelper->GetTopEntry() + (sal_uInt16)m_nVisibleLineCount; 712 for ( sal_uInt16 i = m_pListBoxHelper->GetTopEntry(); i < nEndPos; ++i ) 713 { 714 if ( m_pListBoxHelper->GetBoundingRectangle(i).IsInside( aPos ) ) 715 { 716 xChild = getAccessibleChild(i); 717 break; 718 } 719 } 720 } 721 } 722 723 return xChild; 724 } 725 // ----------------------------------------------------------------------------- 726 727 //===== XServiceInfo ========================================================== 728 729 ::rtl::OUString VCLXAccessibleList::getImplementationName (void) 730 throw (RuntimeException) 731 { 732 return ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.comp.toolkit.AccessibleList")); 733 } 734 // ----------------------------------------------------------------------------- 735 736 Sequence< ::rtl::OUString > VCLXAccessibleList::getSupportedServiceNames (void) 737 throw (RuntimeException) 738 { 739 Sequence< ::rtl::OUString > aNames = VCLXAccessibleComponent::getSupportedServiceNames(); 740 sal_Int32 nLength = aNames.getLength(); 741 aNames.realloc( nLength + 1 ); 742 aNames[nLength] = ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.accessibility.AccessibleList")); 743 return aNames; 744 } 745 // ----------------------------------------------------------------------------- 746 747 void VCLXAccessibleList::UpdateVisibleLineCount() 748 { 749 if ( m_pListBoxHelper ) 750 { 751 if ( (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 752 m_nVisibleLineCount = m_pListBoxHelper->GetDisplayLineCount(); 753 else 754 { 755 sal_uInt16 nCols = 0, 756 nLines = 0; 757 m_pListBoxHelper->GetMaxVisColumnsAndLines (nCols, nLines); 758 m_nVisibleLineCount = nLines; 759 } 760 } 761 } 762 763 // ----------------------------------------------------------------------------- 764 void VCLXAccessibleList::UpdateEntryRange_Impl() 765 { 766 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 767 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 768 769 sal_Int32 nTop = m_nLastTopEntry; 770 771 if ( m_pListBoxHelper ) 772 nTop = m_pListBoxHelper->GetTopEntry(); 773 if ( nTop != m_nLastTopEntry ) 774 { 775 UpdateVisibleLineCount(); 776 sal_Int32 nBegin = Min( m_nLastTopEntry, nTop ); 777 sal_Int32 nEnd = Max( m_nLastTopEntry + m_nVisibleLineCount, nTop + m_nVisibleLineCount ); 778 for (sal_uInt16 i = static_cast<sal_uInt16>(nBegin); (i <= static_cast<sal_uInt16>(nEnd)); ++i) 779 { 780 sal_Bool bVisible = ( i >= nTop && i < ( nTop + m_nVisibleLineCount ) ); 781 Reference< XAccessible > xHold; 782 if ( i < m_aAccessibleChildren.size() ) 783 xHold = m_aAccessibleChildren[i]; 784 else if ( bVisible ) 785 xHold = CreateChild(i); 786 787 if ( xHold.is() ) 788 static_cast< VCLXAccessibleListItem* >( xHold.get() )->SetVisible( m_bVisible && bVisible ); 789 } 790 } 791 792 m_nLastTopEntry = nTop; 793 } 794 // ----------------------------------------------------------------------------- 795 sal_Bool VCLXAccessibleList::checkEntrySelected(sal_uInt16 _nPos,Any& _rNewValue,Reference< XAccessible >& _rxNewAcc) 796 { 797 OSL_ENSURE(m_pListBoxHelper,"Helper is not valid!"); 798 sal_Bool bNowSelected = sal_False; 799 if ( m_pListBoxHelper ) 800 { 801 bNowSelected = m_pListBoxHelper->IsEntryPosSelected (_nPos); 802 if ( bNowSelected ) 803 { 804 _rxNewAcc = CreateChild(_nPos); 805 _rNewValue <<= _rxNewAcc; 806 } 807 } 808 return bNowSelected; 809 } 810 // ----------------------------------------------------------------------------- 811 812 void VCLXAccessibleList::UpdateSelection_Impl(sal_uInt16) 813 { 814 uno::Any aOldValue, aNewValue; 815 816 { 817 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 818 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 819 Reference< XAccessible > xNewAcc; 820 821 if ( m_pListBoxHelper ) 822 { 823 sal_uInt16 i=0; 824 m_nCurSelectedPos = LISTBOX_ENTRY_NOTFOUND; 825 for ( ListItems::iterator aIter = m_aAccessibleChildren.begin(); 826 aIter != m_aAccessibleChildren.end(); ++aIter,++i) 827 { 828 Reference< XAccessible > xHold = *aIter; 829 if ( xHold.is() ) 830 { 831 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() ); 832 // Retrieve the item's index from the list entry. 833 sal_Bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i); 834 if (bNowSelected) 835 m_nCurSelectedPos = i; 836 837 if ( bNowSelected && !pItem->IsSelected() ) 838 { 839 xNewAcc = *aIter; 840 aNewValue <<= xNewAcc; 841 } 842 else if ( pItem->IsSelected() ) 843 m_nLastSelectedPos = i; 844 845 pItem->SetSelected( bNowSelected ); 846 } 847 else 848 { // it could happen that a child was not created before 849 checkEntrySelected(i,aNewValue,xNewAcc); 850 } 851 } 852 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 853 if ( i < nCount ) // here we have to check the if any other listbox entry is selected 854 { 855 for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i ) 856 ; 857 } 858 if ( xNewAcc.is() && GetWindow()->HasFocus() ) 859 { 860 if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND ) 861 aOldValue <<= getAccessibleChild( (sal_Int32)m_nLastSelectedPos ); 862 aNewValue <<= xNewAcc; 863 } 864 } 865 } 866 if (!m_pListBoxHelper->IsInDropDown()) 867 { 868 } 869 else 870 { 871 if ( aNewValue.hasValue() || aOldValue.hasValue() ) 872 NotifyAccessibleEvent( 873 AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 874 aOldValue, 875 aNewValue ); 876 //the SELECTION_CHANGED is not necessary 877 //NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, Any(), Any() ); 878 } 879 } 880 881 // ----------------------------------------------------------------------------- 882 // XAccessibleSelection 883 // ----------------------------------------------------------------------------- 884 void SAL_CALL VCLXAccessibleList::selectAccessibleChild( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 885 { 886 sal_Bool bNotify = sal_False; 887 888 { 889 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 890 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 891 892 if ( m_pListBoxHelper ) 893 { 894 checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False); 895 896 m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nChildIndex, sal_True ); 897 // call the select handler, don't handle events in this time 898 m_bDisableProcessEvent = true; 899 m_pListBoxHelper->Select(); 900 m_bDisableProcessEvent = false; 901 bNotify = sal_True; 902 } 903 } 904 905 if ( bNotify ) 906 UpdateSelection_Impl(); 907 } 908 // ----------------------------------------------------------------------------- 909 sal_Bool SAL_CALL VCLXAccessibleList::isAccessibleChildSelected( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 910 { 911 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 912 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 913 914 sal_Bool bRet = sal_False; 915 if ( m_pListBoxHelper ) 916 { 917 checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False); 918 919 bRet = m_pListBoxHelper->IsEntryPosSelected( (sal_uInt16)nChildIndex ); 920 } 921 return bRet; 922 } 923 // ----------------------------------------------------------------------------- 924 void SAL_CALL VCLXAccessibleList::clearAccessibleSelection( ) throw (RuntimeException) 925 { 926 sal_Bool bNotify = sal_False; 927 928 { 929 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 930 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 931 932 if ( m_pListBoxHelper ) 933 { 934 m_pListBoxHelper->SetNoSelection(); 935 bNotify = sal_True; 936 } 937 } 938 939 if ( bNotify ) 940 UpdateSelection_Impl(); 941 } 942 // ----------------------------------------------------------------------------- 943 void SAL_CALL VCLXAccessibleList::selectAllAccessibleChildren( ) throw (RuntimeException) 944 { 945 sal_Bool bNotify = sal_False; 946 947 { 948 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 949 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 950 951 if ( m_pListBoxHelper ) 952 { 953 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 954 for ( sal_uInt16 i = 0; i < nCount; ++i ) 955 m_pListBoxHelper->SelectEntryPos( i, sal_True ); 956 // call the select handler, don't handle events in this time 957 m_bDisableProcessEvent = true; 958 m_pListBoxHelper->Select(); 959 m_bDisableProcessEvent = false; 960 bNotify = sal_True; 961 } 962 } 963 964 if ( bNotify ) 965 UpdateSelection_Impl(); 966 } 967 // ----------------------------------------------------------------------------- 968 sal_Int32 SAL_CALL VCLXAccessibleList::getSelectedAccessibleChildCount( ) throw (RuntimeException) 969 { 970 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 971 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 972 973 sal_Int32 nCount = 0; 974 if ( m_pListBoxHelper ) 975 nCount = m_pListBoxHelper->GetSelectEntryCount(); 976 return nCount; 977 } 978 // ----------------------------------------------------------------------------- 979 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getSelectedAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 980 { 981 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 982 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 983 984 if ( m_pListBoxHelper ) 985 { 986 checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_True); 987 return getAccessibleChild( (sal_Int32)m_pListBoxHelper->GetSelectEntryPos( (sal_uInt16)nSelectedChildIndex ) ); 988 } 989 990 return NULL; 991 } 992 // ----------------------------------------------------------------------------- 993 void SAL_CALL VCLXAccessibleList::deselectAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 994 { 995 sal_Bool bNotify = sal_False; 996 997 { 998 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 999 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1000 1001 if ( m_pListBoxHelper ) 1002 { 1003 checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_False); 1004 1005 m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nSelectedChildIndex, sal_False ); 1006 // call the select handler, don't handle events in this time 1007 m_bDisableProcessEvent = true; 1008 m_pListBoxHelper->Select(); 1009 m_bDisableProcessEvent = false; 1010 bNotify = sal_True; 1011 } 1012 } 1013 1014 if ( bNotify ) 1015 UpdateSelection_Impl(); 1016 } 1017 // ----------------------------------------------------------------------------- 1018 // accessibility::XAccessibleComponent 1019 awt::Rectangle VCLXAccessibleList::implGetBounds() throw (uno::RuntimeException) 1020 { 1021 awt::Rectangle aBounds ( 0, 0, 0, 0 ); 1022 if ( m_pListBoxHelper 1023 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 1024 { 1025 if ( m_pListBoxHelper->IsInDropDown() ) 1026 aBounds = AWTRectangle(m_pListBoxHelper->GetDropDownPosSizePixel()); 1027 } 1028 else 1029 { 1030 // a list has the same bounds as his parent but starts at (0,0) 1031 aBounds = VCLXAccessibleComponent::implGetBounds(); 1032 aBounds.X = 0; 1033 aBounds.Y = 0; 1034 if ( m_aBoxType == COMBOBOX ) 1035 { 1036 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 1037 if ( pBox ) 1038 { 1039 Size aSize = pBox->GetSubEdit()->GetSizePixel(); 1040 aBounds.Y += aSize.Height(); 1041 aBounds.Height -= aSize.Height(); 1042 } 1043 } 1044 } 1045 return aBounds; 1046 } 1047 // ----------------------------------------------------------------------------- 1048 1049 awt::Point VCLXAccessibleList::getLocationOnScreen( ) throw (uno::RuntimeException) 1050 { 1051 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1052 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1053 1054 awt::Point aPos; 1055 if ( m_pListBoxHelper 1056 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 1057 { 1058 if ( m_pListBoxHelper->IsInDropDown() ) 1059 aPos = AWTPoint(m_pListBoxHelper->GetDropDownPosSizePixel().TopLeft()); 1060 } 1061 else 1062 { 1063 aPos = VCLXAccessibleComponent::getLocationOnScreen(); 1064 if ( m_aBoxType == COMBOBOX ) 1065 { 1066 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 1067 if ( pBox ) 1068 { 1069 aPos.Y += pBox->GetSubEdit()->GetSizePixel().Height(); 1070 } 1071 } 1072 } 1073 return aPos; 1074 } 1075 // ----------------------------------------------------------------------------- 1076 sal_Bool VCLXAccessibleList::IsInDropDown() 1077 { 1078 return m_pListBoxHelper->IsInDropDown(); 1079 } 1080 // ----------------------------------------------------------------------------- 1081 void VCLXAccessibleList::HandleDropOpen() 1082 { 1083 if ( !m_bDisableProcessEvent ) 1084 UpdateSelection_Impl(); 1085 if (m_nCurSelectedPos != LISTBOX_ENTRY_NOTFOUND && 1086 m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND) 1087 { 1088 Reference< XAccessible > xChild = getAccessibleChild(m_nCurSelectedPos); 1089 if(xChild.is()) 1090 { 1091 uno::Any aNewValue; 1092 aNewValue <<= xChild; 1093 NotifyAccessibleEvent(AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, uno::Any(), aNewValue ); 1094 } 1095 } 1096 } 1097