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 case VCLEVENT_LISTBOX_SELECT: 431 if ( !m_bDisableProcessEvent ) 432 UpdateSelection_Impl(); 433 break; 434 */ 435 // The selection events VCLEVENT_COMBOBOX_SELECT and 436 // VCLEVENT_COMBOBOX_DESELECT are not handled here because here we 437 // have no access to the edit field. Its text is necessary to 438 // identify the currently selected item. 439 440 case VCLEVENT_OBJECT_DYING: 441 { 442 dispose(); 443 444 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 445 break; 446 } 447 448 case VCLEVENT_LISTBOX_ITEMREMOVED: 449 case VCLEVENT_COMBOBOX_ITEMREMOVED: 450 HandleChangedItemList (false, reinterpret_cast<sal_IntPtr>( 451 rVclWindowEvent.GetData())); 452 break; 453 454 case VCLEVENT_LISTBOX_ITEMADDED: 455 case VCLEVENT_COMBOBOX_ITEMADDED: 456 HandleChangedItemList (true, reinterpret_cast<sal_IntPtr>( 457 rVclWindowEvent.GetData())); 458 break; 459 case VCLEVENT_CONTROL_GETFOCUS: 460 { 461 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 462 // Added by IBM Symphony Acc team to handle the list item focus when List control get focus 463 sal_Bool b_IsDropDownList = sal_True; 464 if (m_pListBoxHelper) 465 b_IsDropDownList = ((m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN); 466 if ( m_aBoxType == LISTBOX && !b_IsDropDownList ) 467 { 468 if ( m_pListBoxHelper ) 469 { 470 uno::Any aOldValue, 471 aNewValue; 472 sal_uInt16 nPos = m_nCurSelectedPos; 473 474 if ( nPos == LISTBOX_ENTRY_NOTFOUND ) 475 nPos = m_pListBoxHelper->GetTopEntry(); 476 if ( nPos != LISTBOX_ENTRY_NOTFOUND ) 477 aNewValue <<= CreateChild(nPos); 478 NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 479 aOldValue, 480 aNewValue ); 481 } 482 } 483 } 484 break; 485 486 default: 487 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 488 } 489 } 490 491 void VCLXAccessibleList::FillAccessibleRelationSet( utl::AccessibleRelationSetHelper& rRelationSet ) 492 { 493 ListBox* pBox = static_cast<ListBox*>(GetWindow()); 494 if( m_aBoxType == LISTBOX ) 495 { 496 if (m_pListBoxHelper && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) != WB_DROPDOWN) 497 { 498 uno::Sequence< uno::Reference< uno::XInterface > > aSequence(1); 499 aSequence[0] = pBox->GetAccessible(); 500 rRelationSet.AddRelation( com::sun::star::accessibility::AccessibleRelation( com::sun::star::accessibility::AccessibleRelationType::MEMBER_OF, aSequence ) ); 501 } 502 } 503 else 504 { 505 VCLXAccessibleComponent::FillAccessibleRelationSet(rRelationSet); 506 } 507 } 508 // ----------------------------------------------------------------------------- 509 510 /** To find out which item is currently selected and to update the SELECTED 511 state of the associated accessibility objects accordingly we exploit the 512 fact that the 513 */ 514 void VCLXAccessibleList::UpdateSelection (::rtl::OUString sTextOfSelectedItem) 515 { 516 if ( m_aBoxType == COMBOBOX ) 517 { 518 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 519 if ( pBox != NULL ) 520 { 521 // Find the index of the selected item inside the VCL control... 522 sal_uInt16 nIndex = pBox->GetEntryPos (XubString(sTextOfSelectedItem)); 523 // ...and then find the associated accessibility object. 524 if ( nIndex == LISTBOX_ENTRY_NOTFOUND ) 525 nIndex = 0; 526 UpdateSelection_Impl(nIndex); 527 } 528 } 529 } 530 // ----------------------------------------------------------------------------- 531 532 void VCLXAccessibleList::adjustEntriesIndexInParent(ListItems::iterator& _aBegin,::std::mem_fun_t<bool,VCLXAccessibleListItem>& _rMemFun) 533 { 534 ListItems::iterator aIter = _aBegin; 535 ListItems::iterator aEnd = m_aAccessibleChildren.end(); 536 // adjust the index inside the VCLXAccessibleListItem 537 for (;aIter != aEnd ; ++aIter) 538 { 539 Reference< XAccessible > xHold = *aIter; 540 VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get()); 541 if ( pItem ) 542 _rMemFun(pItem); 543 } 544 } 545 // ----------------------------------------------------------------------------- 546 547 Reference<XAccessible> VCLXAccessibleList::CreateChild (sal_Int32 i) 548 { 549 Reference<XAccessible> xChild; 550 551 sal_uInt16 nPos = static_cast<sal_uInt16>(i); 552 if ( nPos >= m_aAccessibleChildren.size() ) 553 { 554 m_aAccessibleChildren.resize(nPos + 1); 555 556 // insert into the container 557 xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this); 558 m_aAccessibleChildren[nPos] = xChild; 559 } 560 else 561 { 562 xChild = m_aAccessibleChildren[nPos]; 563 // check if position is empty and can be used else we have to adjust all entries behind this 564 if ( xChild.is() ) 565 { 566 /* 567 ListItems::iterator aIter = m_aAccessibleChildren.begin() + nPos; 568 ::std::mem_fun_t<bool, VCLXAccessibleListItem> aTemp(&VCLXAccessibleListItem::IncrementIndexInParent); 569 adjustEntriesIndexInParent( aIter, aTemp); 570 */ 571 } 572 else 573 { 574 xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this); 575 m_aAccessibleChildren[nPos] = xChild; 576 } 577 } 578 579 if ( xChild.is() ) 580 { 581 // Just add the SELECTED state. 582 sal_Bool bNowSelected = sal_False; 583 if ( m_pListBoxHelper ) 584 bNowSelected = m_pListBoxHelper->IsEntryPosSelected ((sal_uInt16)i); 585 if (bNowSelected) 586 m_nCurSelectedPos = sal_uInt16(i); 587 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >(xChild.get()); 588 pItem->SetSelected( bNowSelected ); 589 590 // Set the child's VISIBLE state. 591 UpdateVisibleLineCount(); 592 sal_uInt16 nTopEntry = 0; 593 if ( m_pListBoxHelper ) 594 nTopEntry = m_pListBoxHelper->GetTopEntry(); 595 sal_Bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) ); 596 pItem->SetVisible( m_bVisible && bVisible ); 597 } 598 599 return xChild; 600 } 601 // ----------------------------------------------------------------------------- 602 603 void VCLXAccessibleList::HandleChangedItemList (bool bItemInserted, sal_Int32 nIndex) 604 { 605 /* 606 if ( !bItemInserted ) 607 { 608 if ( nIndex == -1 ) // special handling here 609 { 610 clearItems(); 611 } 612 else 613 { 614 if ( nIndex >= 0 && static_cast<sal_uInt16>(nIndex) < m_aAccessibleChildren.size() ) 615 { 616 ListItems::iterator aIter = m_aAccessibleChildren.erase(m_aAccessibleChildren.begin()+nIndex); 617 ::std::mem_fun_t<bool, VCLXAccessibleListItem> aTemp(&VCLXAccessibleListItem::DecrementIndexInParent); 618 adjustEntriesIndexInParent( aIter, aTemp ); 619 } 620 } 621 } 622 else 623 getAccessibleChild(nIndex); 624 */ 625 clearItems(); 626 NotifyAccessibleEvent ( 627 AccessibleEventId::INVALIDATE_ALL_CHILDREN, 628 Any(), Any()); 629 } 630 // ----------------------------------------------------------------------------- 631 632 IMPLEMENT_FORWARD_XINTERFACE2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE) 633 IMPLEMENT_FORWARD_XTYPEPROVIDER2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE) 634 635 //===== XAccessible ========================================================= 636 637 Reference<XAccessibleContext> SAL_CALL 638 VCLXAccessibleList::getAccessibleContext (void) 639 throw (RuntimeException) 640 { 641 return this; 642 } 643 // ----------------------------------------------------------------------------- 644 645 //===== XAccessibleContext ================================================== 646 647 sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleChildCount (void) 648 throw (RuntimeException) 649 { 650 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 651 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 652 653 sal_Int32 nCount = 0; 654 if ( m_pListBoxHelper ) 655 nCount = m_pListBoxHelper->GetEntryCount(); 656 657 return nCount; 658 } 659 // ----------------------------------------------------------------------------- 660 661 Reference<XAccessible> SAL_CALL VCLXAccessibleList::getAccessibleChild (sal_Int32 i) 662 throw (IndexOutOfBoundsException, RuntimeException) 663 { 664 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 665 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 666 667 if ( i < 0 || i >= getAccessibleChildCount() ) 668 throw IndexOutOfBoundsException(); 669 670 Reference< XAccessible > xChild; 671 // search for the child 672 if ( i >= static_cast<sal_Int32>(m_aAccessibleChildren.size()) ) 673 xChild = CreateChild (i); 674 else 675 { 676 xChild = m_aAccessibleChildren[i]; 677 if ( !xChild.is() ) 678 xChild = CreateChild (i); 679 } 680 OSL_ENSURE( xChild.is(), "VCLXAccessibleList::getAccessibleChild: returning empty child!" ); 681 return xChild; 682 } 683 // ----------------------------------------------------------------------------- 684 685 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleParent( ) 686 throw (RuntimeException) 687 { 688 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 689 690 return m_xParent; 691 } 692 // ----------------------------------------------------------------------------- 693 694 sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleIndexInParent (void) 695 throw (::com::sun::star::uno::RuntimeException) 696 { 697 if (m_nIndexInParent != DEFAULT_INDEX_IN_PARENT) 698 return m_nIndexInParent; 699 else 700 return VCLXAccessibleComponent::getAccessibleIndexInParent(); 701 } 702 // ----------------------------------------------------------------------------- 703 704 sal_Int16 SAL_CALL VCLXAccessibleList::getAccessibleRole (void) 705 throw (RuntimeException) 706 { 707 return AccessibleRole::LIST; 708 } 709 // ----------------------------------------------------------------------------- 710 711 //===== XAccessibleComponent ================================================ 712 713 sal_Bool SAL_CALL VCLXAccessibleList::contains( const awt::Point& rPoint ) throw (RuntimeException) 714 { 715 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 716 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 717 718 sal_Bool bInside = sal_False; 719 720 Window* pListBox = GetWindow(); 721 if ( pListBox ) 722 { 723 Rectangle aRect( Point(0,0), pListBox->GetSizePixel() ); 724 bInside = aRect.IsInside( VCLPoint( rPoint ) ); 725 } 726 727 return bInside; 728 } 729 // ----------------------------------------------------------------------------- 730 731 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleAt( const awt::Point& rPoint ) 732 throw (RuntimeException) 733 { 734 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 735 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 736 737 Reference< XAccessible > xChild; 738 if ( m_pListBoxHelper ) 739 { 740 UpdateVisibleLineCount(); 741 if ( contains( rPoint ) && m_nVisibleLineCount > 0 ) 742 { 743 Point aPos = VCLPoint( rPoint ); 744 sal_uInt16 nEndPos = m_pListBoxHelper->GetTopEntry() + (sal_uInt16)m_nVisibleLineCount; 745 for ( sal_uInt16 i = m_pListBoxHelper->GetTopEntry(); i < nEndPos; ++i ) 746 { 747 if ( m_pListBoxHelper->GetBoundingRectangle(i).IsInside( aPos ) ) 748 { 749 xChild = getAccessibleChild(i); 750 break; 751 } 752 } 753 } 754 } 755 756 return xChild; 757 } 758 // ----------------------------------------------------------------------------- 759 760 //===== XServiceInfo ========================================================== 761 762 ::rtl::OUString VCLXAccessibleList::getImplementationName (void) 763 throw (RuntimeException) 764 { 765 return ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.comp.toolkit.AccessibleList")); 766 } 767 // ----------------------------------------------------------------------------- 768 769 Sequence< ::rtl::OUString > VCLXAccessibleList::getSupportedServiceNames (void) 770 throw (RuntimeException) 771 { 772 Sequence< ::rtl::OUString > aNames = VCLXAccessibleComponent::getSupportedServiceNames(); 773 sal_Int32 nLength = aNames.getLength(); 774 aNames.realloc( nLength + 1 ); 775 aNames[nLength] = ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.accessibility.AccessibleList")); 776 return aNames; 777 } 778 // ----------------------------------------------------------------------------- 779 780 void VCLXAccessibleList::UpdateVisibleLineCount() 781 { 782 if ( m_pListBoxHelper ) 783 { 784 if ( (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 785 m_nVisibleLineCount = m_pListBoxHelper->GetDisplayLineCount(); 786 else 787 { 788 sal_uInt16 nCols = 0, 789 nLines = 0; 790 m_pListBoxHelper->GetMaxVisColumnsAndLines (nCols, nLines); 791 m_nVisibleLineCount = nLines; 792 } 793 } 794 } 795 796 // ----------------------------------------------------------------------------- 797 void VCLXAccessibleList::UpdateEntryRange_Impl() 798 { 799 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 800 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 801 802 sal_Int32 nTop = m_nLastTopEntry; 803 804 if ( m_pListBoxHelper ) 805 nTop = m_pListBoxHelper->GetTopEntry(); 806 if ( nTop != m_nLastTopEntry ) 807 { 808 UpdateVisibleLineCount(); 809 sal_Int32 nBegin = Min( m_nLastTopEntry, nTop ); 810 sal_Int32 nEnd = Max( m_nLastTopEntry + m_nVisibleLineCount, nTop + m_nVisibleLineCount ); 811 for (sal_uInt16 i = static_cast<sal_uInt16>(nBegin); (i <= static_cast<sal_uInt16>(nEnd)); ++i) 812 { 813 sal_Bool bVisible = ( i >= nTop && i < ( nTop + m_nVisibleLineCount ) ); 814 Reference< XAccessible > xHold; 815 if ( i < m_aAccessibleChildren.size() ) 816 xHold = m_aAccessibleChildren[i]; 817 else if ( bVisible ) 818 xHold = CreateChild(i); 819 820 if ( xHold.is() ) 821 static_cast< VCLXAccessibleListItem* >( xHold.get() )->SetVisible( m_bVisible && bVisible ); 822 } 823 } 824 825 m_nLastTopEntry = nTop; 826 } 827 // ----------------------------------------------------------------------------- 828 sal_Bool VCLXAccessibleList::checkEntrySelected(sal_uInt16 _nPos,Any& _rNewValue,Reference< XAccessible >& _rxNewAcc) 829 { 830 OSL_ENSURE(m_pListBoxHelper,"Helper is not valid!"); 831 sal_Bool bNowSelected = sal_False; 832 if ( m_pListBoxHelper ) 833 { 834 bNowSelected = m_pListBoxHelper->IsEntryPosSelected (_nPos); 835 if ( bNowSelected ) 836 { 837 _rxNewAcc = CreateChild(_nPos); 838 _rNewValue <<= _rxNewAcc; 839 } 840 } 841 return bNowSelected; 842 } 843 // ----------------------------------------------------------------------------- 844 845 void VCLXAccessibleList::UpdateSelection_Impl(sal_uInt16) 846 { 847 uno::Any aOldValue, aNewValue; 848 849 { 850 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 851 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 852 Reference< XAccessible > xNewAcc; 853 854 if ( m_pListBoxHelper ) 855 { 856 sal_uInt16 i=0; 857 m_nCurSelectedPos = LISTBOX_ENTRY_NOTFOUND; 858 for ( ListItems::iterator aIter = m_aAccessibleChildren.begin(); 859 aIter != m_aAccessibleChildren.end(); ++aIter,++i) 860 { 861 Reference< XAccessible > xHold = *aIter; 862 if ( xHold.is() ) 863 { 864 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() ); 865 // Retrieve the item's index from the list entry. 866 sal_Bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i); 867 if (bNowSelected) 868 m_nCurSelectedPos = i; 869 870 if ( bNowSelected && !pItem->IsSelected() ) 871 { 872 xNewAcc = *aIter; 873 aNewValue <<= xNewAcc; 874 } 875 else if ( pItem->IsSelected() ) 876 m_nLastSelectedPos = i; 877 878 pItem->SetSelected( bNowSelected ); 879 } 880 else 881 { // it could happen that a child was not created before 882 checkEntrySelected(i,aNewValue,xNewAcc); 883 } 884 } 885 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 886 if ( i < nCount ) // here we have to check the if any other listbox entry is selected 887 { 888 for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i ) 889 ; 890 } 891 if ( xNewAcc.is() && GetWindow()->HasFocus() ) 892 { 893 if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND ) 894 aOldValue <<= getAccessibleChild( (sal_Int32)m_nLastSelectedPos ); 895 aNewValue <<= xNewAcc; 896 } 897 } 898 } 899 if (!m_pListBoxHelper->IsInDropDown()) 900 { 901 } 902 else 903 { 904 if ( aNewValue.hasValue() || aOldValue.hasValue() ) 905 NotifyAccessibleEvent( 906 AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 907 aOldValue, 908 aNewValue ); 909 //the SELECTION_CHANGED is not necessary 910 //NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, Any(), Any() ); 911 } 912 } 913 914 // ----------------------------------------------------------------------------- 915 // XAccessibleSelection 916 // ----------------------------------------------------------------------------- 917 void SAL_CALL VCLXAccessibleList::selectAccessibleChild( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 918 { 919 sal_Bool bNotify = sal_False; 920 921 { 922 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 923 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 924 925 if ( m_pListBoxHelper ) 926 { 927 checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False); 928 929 m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nChildIndex, sal_True ); 930 // call the select handler, don't handle events in this time 931 m_bDisableProcessEvent = true; 932 m_pListBoxHelper->Select(); 933 m_bDisableProcessEvent = false; 934 bNotify = sal_True; 935 } 936 } 937 938 if ( bNotify ) 939 UpdateSelection_Impl(); 940 } 941 // ----------------------------------------------------------------------------- 942 sal_Bool SAL_CALL VCLXAccessibleList::isAccessibleChildSelected( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 943 { 944 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 945 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 946 947 sal_Bool bRet = sal_False; 948 if ( m_pListBoxHelper ) 949 { 950 checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False); 951 952 bRet = m_pListBoxHelper->IsEntryPosSelected( (sal_uInt16)nChildIndex ); 953 } 954 return bRet; 955 } 956 // ----------------------------------------------------------------------------- 957 void SAL_CALL VCLXAccessibleList::clearAccessibleSelection( ) throw (RuntimeException) 958 { 959 sal_Bool bNotify = sal_False; 960 961 { 962 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 963 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 964 965 if ( m_pListBoxHelper ) 966 { 967 m_pListBoxHelper->SetNoSelection(); 968 bNotify = sal_True; 969 } 970 } 971 972 if ( bNotify ) 973 UpdateSelection_Impl(); 974 } 975 // ----------------------------------------------------------------------------- 976 void SAL_CALL VCLXAccessibleList::selectAllAccessibleChildren( ) throw (RuntimeException) 977 { 978 sal_Bool bNotify = sal_False; 979 980 { 981 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 982 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 983 984 if ( m_pListBoxHelper ) 985 { 986 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 987 for ( sal_uInt16 i = 0; i < nCount; ++i ) 988 m_pListBoxHelper->SelectEntryPos( i, sal_True ); 989 // call the select handler, don't handle events in this time 990 m_bDisableProcessEvent = true; 991 m_pListBoxHelper->Select(); 992 m_bDisableProcessEvent = false; 993 bNotify = sal_True; 994 } 995 } 996 997 if ( bNotify ) 998 UpdateSelection_Impl(); 999 } 1000 // ----------------------------------------------------------------------------- 1001 sal_Int32 SAL_CALL VCLXAccessibleList::getSelectedAccessibleChildCount( ) throw (RuntimeException) 1002 { 1003 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1004 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1005 1006 sal_Int32 nCount = 0; 1007 if ( m_pListBoxHelper ) 1008 nCount = m_pListBoxHelper->GetSelectEntryCount(); 1009 return nCount; 1010 } 1011 // ----------------------------------------------------------------------------- 1012 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getSelectedAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 1013 { 1014 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1015 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1016 1017 if ( m_pListBoxHelper ) 1018 { 1019 checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_True); 1020 return getAccessibleChild( (sal_Int32)m_pListBoxHelper->GetSelectEntryPos( (sal_uInt16)nSelectedChildIndex ) ); 1021 } 1022 1023 return NULL; 1024 } 1025 // ----------------------------------------------------------------------------- 1026 void SAL_CALL VCLXAccessibleList::deselectAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 1027 { 1028 sal_Bool bNotify = sal_False; 1029 1030 { 1031 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1032 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1033 1034 if ( m_pListBoxHelper ) 1035 { 1036 checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_False); 1037 1038 m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nSelectedChildIndex, sal_False ); 1039 // call the select handler, don't handle events in this time 1040 m_bDisableProcessEvent = true; 1041 m_pListBoxHelper->Select(); 1042 m_bDisableProcessEvent = false; 1043 bNotify = sal_True; 1044 } 1045 } 1046 1047 if ( bNotify ) 1048 UpdateSelection_Impl(); 1049 } 1050 // ----------------------------------------------------------------------------- 1051 // accessibility::XAccessibleComponent 1052 awt::Rectangle VCLXAccessibleList::implGetBounds() throw (uno::RuntimeException) 1053 { 1054 awt::Rectangle aBounds ( 0, 0, 0, 0 ); 1055 if ( m_pListBoxHelper 1056 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 1057 { 1058 if ( m_pListBoxHelper->IsInDropDown() ) 1059 aBounds = AWTRectangle(m_pListBoxHelper->GetDropDownPosSizePixel()); 1060 } 1061 else 1062 { 1063 // a list has the same bounds as his parent but starts at (0,0) 1064 aBounds = VCLXAccessibleComponent::implGetBounds(); 1065 aBounds.X = 0; 1066 aBounds.Y = 0; 1067 if ( m_aBoxType == COMBOBOX ) 1068 { 1069 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 1070 if ( pBox ) 1071 { 1072 Size aSize = pBox->GetSubEdit()->GetSizePixel(); 1073 //aBounds.X += aSize.Height(); 1074 //aBounds.Y += aSize.Width(); 1075 aBounds.Y += aSize.Height(); 1076 aBounds.Height -= aSize.Height(); 1077 //aBounds.Width -= aSize.Width(); 1078 } 1079 } 1080 } 1081 return aBounds; 1082 } 1083 // ----------------------------------------------------------------------------- 1084 1085 awt::Point VCLXAccessibleList::getLocationOnScreen( ) throw (uno::RuntimeException) 1086 { 1087 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1088 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1089 1090 awt::Point aPos; 1091 if ( m_pListBoxHelper 1092 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 1093 { 1094 if ( m_pListBoxHelper->IsInDropDown() ) 1095 aPos = AWTPoint(m_pListBoxHelper->GetDropDownPosSizePixel().TopLeft()); 1096 } 1097 else 1098 { 1099 aPos = VCLXAccessibleComponent::getLocationOnScreen(); 1100 if ( m_aBoxType == COMBOBOX ) 1101 { 1102 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 1103 if ( pBox ) 1104 { 1105 //aPos.X += pBox->GetSubEdit()->GetSizePixel().Height(); 1106 //aPos.Y += pBox->GetSubEdit()->GetSizePixel().Width(); 1107 aPos.Y += pBox->GetSubEdit()->GetSizePixel().Height(); 1108 } 1109 } 1110 } 1111 return aPos; 1112 } 1113 // ----------------------------------------------------------------------------- 1114 sal_Bool VCLXAccessibleList::IsInDropDown() 1115 { 1116 return m_pListBoxHelper->IsInDropDown(); 1117 } 1118 // ----------------------------------------------------------------------------- 1119 void VCLXAccessibleList::HandleDropOpen() 1120 { 1121 if ( !m_bDisableProcessEvent ) 1122 UpdateSelection_Impl(); 1123 if (m_nCurSelectedPos != LISTBOX_ENTRY_NOTFOUND && 1124 m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND) 1125 { 1126 Reference< XAccessible > xChild = getAccessibleChild(m_nCurSelectedPos); 1127 if(xChild.is()) 1128 { 1129 uno::Any aNewValue; 1130 aNewValue <<= xChild; 1131 NotifyAccessibleEvent(AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, uno::Any(), aNewValue ); 1132 } 1133 } 1134 } 1135