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_DROPDOWN_SELECT: 367 case VCLEVENT_LISTBOX_SELECT: 368 if ( !m_bDisableProcessEvent ) 369 UpdateSelection_Impl_Acc(b_IsDropDownList); 370 break; 371 case VCLEVENT_LISTBOX_FOCUSITEMCHANGED: 372 if ( !m_bDisableProcessEvent ) 373 UpdateFocus_Impl_Acc((sal_uInt16)reinterpret_cast<sal_uIntPtr>(rVclWindowEvent.GetData()),b_IsDropDownList); 374 break; 375 case VCLEVENT_WINDOW_GETFOCUS: 376 break; 377 case VCLEVENT_CONTROL_GETFOCUS: 378 { 379 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 380 if (m_aBoxType == COMBOBOX && b_IsDropDownList) 381 { 382 //VCLXAccessibleDropDownComboBox 383 } 384 else if (m_aBoxType == LISTBOX && b_IsDropDownList) 385 { 386 } 387 else if ( m_aBoxType == LISTBOX && !b_IsDropDownList) 388 { 389 if ( m_pListBoxHelper ) 390 { 391 uno::Any aOldValue, 392 aNewValue; 393 sal_uInt16 nPos = m_nCurSelectedPos; //m_pListBoxHelper->GetSelectEntryPos(); 394 395 if ( nPos == LISTBOX_ENTRY_NOTFOUND ) 396 nPos = m_pListBoxHelper->GetTopEntry(); 397 if ( nPos != LISTBOX_ENTRY_NOTFOUND ) 398 aNewValue <<= CreateChild(nPos); 399 NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 400 aOldValue, 401 aNewValue ); 402 } 403 } 404 } 405 break; 406 default: 407 break; 408 } 409 410 } 411 // ----------------------------------------------------------------------------- 412 void VCLXAccessibleList::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent) 413 { 414 // Create a reference to this object to prevent an early release of the 415 // listbox (VCLEVENT_OBJECT_DYING). 416 Reference< XAccessible > xTemp = this; 417 418 switch ( rVclWindowEvent.GetId() ) 419 { 420 case VCLEVENT_DROPDOWN_OPEN: 421 notifyVisibleStates(sal_True); 422 break; 423 case VCLEVENT_DROPDOWN_CLOSE: 424 notifyVisibleStates(sal_False); 425 break; 426 case VCLEVENT_LISTBOX_SCROLLED: 427 case VCLEVENT_COMBOBOX_SCROLLED: 428 UpdateEntryRange_Impl(); 429 break; 430 431 // The selection events VCLEVENT_COMBOBOX_SELECT and 432 // VCLEVENT_COMBOBOX_DESELECT are not handled here because here we 433 // have no access to the edit field. Its text is necessary to 434 // identify the currently selected item. 435 436 case VCLEVENT_OBJECT_DYING: 437 { 438 dispose(); 439 440 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 441 break; 442 } 443 444 case VCLEVENT_LISTBOX_ITEMREMOVED: 445 case VCLEVENT_COMBOBOX_ITEMREMOVED: 446 HandleChangedItemList (false, reinterpret_cast<sal_IntPtr>( 447 rVclWindowEvent.GetData())); 448 break; 449 450 case VCLEVENT_LISTBOX_ITEMADDED: 451 case VCLEVENT_COMBOBOX_ITEMADDED: 452 HandleChangedItemList (true, reinterpret_cast<sal_IntPtr>( 453 rVclWindowEvent.GetData())); 454 break; 455 case VCLEVENT_CONTROL_GETFOCUS: 456 { 457 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 458 // Added by IBM Symphony Acc team to handle the list item focus when List control get focus 459 sal_Bool b_IsDropDownList = sal_True; 460 if (m_pListBoxHelper) 461 b_IsDropDownList = ((m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN); 462 if ( m_aBoxType == LISTBOX && !b_IsDropDownList ) 463 { 464 if ( m_pListBoxHelper ) 465 { 466 uno::Any aOldValue, 467 aNewValue; 468 sal_uInt16 nPos = m_nCurSelectedPos; 469 470 if ( nPos == LISTBOX_ENTRY_NOTFOUND ) 471 nPos = m_pListBoxHelper->GetTopEntry(); 472 if ( nPos != LISTBOX_ENTRY_NOTFOUND ) 473 aNewValue <<= CreateChild(nPos); 474 NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 475 aOldValue, 476 aNewValue ); 477 } 478 } 479 } 480 break; 481 482 default: 483 VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent); 484 } 485 } 486 487 void VCLXAccessibleList::FillAccessibleRelationSet( utl::AccessibleRelationSetHelper& rRelationSet ) 488 { 489 ListBox* pBox = static_cast<ListBox*>(GetWindow()); 490 if( m_aBoxType == LISTBOX ) 491 { 492 if (m_pListBoxHelper && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) != WB_DROPDOWN) 493 { 494 uno::Sequence< uno::Reference< uno::XInterface > > aSequence(1); 495 aSequence[0] = pBox->GetAccessible(); 496 rRelationSet.AddRelation( com::sun::star::accessibility::AccessibleRelation( com::sun::star::accessibility::AccessibleRelationType::MEMBER_OF, aSequence ) ); 497 } 498 } 499 else 500 { 501 VCLXAccessibleComponent::FillAccessibleRelationSet(rRelationSet); 502 } 503 } 504 // ----------------------------------------------------------------------------- 505 506 /** To find out which item is currently selected and to update the SELECTED 507 state of the associated accessibility objects accordingly we exploit the 508 fact that the 509 */ 510 void VCLXAccessibleList::UpdateSelection (::rtl::OUString sTextOfSelectedItem) 511 { 512 if ( m_aBoxType == COMBOBOX ) 513 { 514 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 515 if ( pBox != NULL ) 516 { 517 // Find the index of the selected item inside the VCL control... 518 sal_uInt16 nIndex = pBox->GetEntryPos (XubString(sTextOfSelectedItem)); 519 // ...and then find the associated accessibility object. 520 if ( nIndex == LISTBOX_ENTRY_NOTFOUND ) 521 nIndex = 0; 522 UpdateSelection_Impl(nIndex); 523 } 524 } 525 } 526 // ----------------------------------------------------------------------------- 527 528 void VCLXAccessibleList::adjustEntriesIndexInParent(ListItems::iterator& _aBegin,::std::mem_fun_t<bool,VCLXAccessibleListItem>& _rMemFun) 529 { 530 ListItems::iterator aIter = _aBegin; 531 ListItems::iterator aEnd = m_aAccessibleChildren.end(); 532 // adjust the index inside the VCLXAccessibleListItem 533 for (;aIter != aEnd ; ++aIter) 534 { 535 Reference< XAccessible > xHold = *aIter; 536 VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get()); 537 if ( pItem ) 538 _rMemFun(pItem); 539 } 540 } 541 // ----------------------------------------------------------------------------- 542 543 Reference<XAccessible> VCLXAccessibleList::CreateChild (sal_Int32 i) 544 { 545 Reference<XAccessible> xChild; 546 547 sal_uInt16 nPos = static_cast<sal_uInt16>(i); 548 if ( nPos >= m_aAccessibleChildren.size() ) 549 { 550 m_aAccessibleChildren.resize(nPos + 1); 551 552 // insert into the container 553 xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this); 554 m_aAccessibleChildren[nPos] = xChild; 555 } 556 else 557 { 558 xChild = m_aAccessibleChildren[nPos]; 559 // check if position is empty and can be used else we have to adjust all entries behind this 560 if ( !xChild.is() ) 561 { 562 xChild = new VCLXAccessibleListItem(m_pListBoxHelper, i, this); 563 m_aAccessibleChildren[nPos] = xChild; 564 } 565 } 566 567 if ( xChild.is() ) 568 { 569 // Just add the SELECTED state. 570 sal_Bool bNowSelected = sal_False; 571 if ( m_pListBoxHelper ) 572 bNowSelected = m_pListBoxHelper->IsEntryPosSelected ((sal_uInt16)i); 573 if (bNowSelected) 574 m_nCurSelectedPos = sal_uInt16(i); 575 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >(xChild.get()); 576 pItem->SetSelected( bNowSelected ); 577 578 // Set the child's VISIBLE state. 579 UpdateVisibleLineCount(); 580 sal_uInt16 nTopEntry = 0; 581 if ( m_pListBoxHelper ) 582 nTopEntry = m_pListBoxHelper->GetTopEntry(); 583 sal_Bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) ); 584 pItem->SetVisible( m_bVisible && bVisible ); 585 } 586 587 return xChild; 588 } 589 // ----------------------------------------------------------------------------- 590 591 void VCLXAccessibleList::HandleChangedItemList (bool bItemInserted, sal_Int32 nIndex) 592 { 593 clearItems(); 594 NotifyAccessibleEvent ( 595 AccessibleEventId::INVALIDATE_ALL_CHILDREN, 596 Any(), Any()); 597 } 598 // ----------------------------------------------------------------------------- 599 600 IMPLEMENT_FORWARD_XINTERFACE2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE) 601 IMPLEMENT_FORWARD_XTYPEPROVIDER2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE) 602 603 //===== XAccessible ========================================================= 604 605 Reference<XAccessibleContext> SAL_CALL 606 VCLXAccessibleList::getAccessibleContext (void) 607 throw (RuntimeException) 608 { 609 return this; 610 } 611 // ----------------------------------------------------------------------------- 612 613 //===== XAccessibleContext ================================================== 614 615 sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleChildCount (void) 616 throw (RuntimeException) 617 { 618 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 619 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 620 621 sal_Int32 nCount = 0; 622 if ( m_pListBoxHelper ) 623 nCount = m_pListBoxHelper->GetEntryCount(); 624 625 return nCount; 626 } 627 // ----------------------------------------------------------------------------- 628 629 Reference<XAccessible> SAL_CALL VCLXAccessibleList::getAccessibleChild (sal_Int32 i) 630 throw (IndexOutOfBoundsException, RuntimeException) 631 { 632 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 633 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 634 635 if ( i < 0 || i >= getAccessibleChildCount() ) 636 throw IndexOutOfBoundsException(); 637 638 Reference< XAccessible > xChild; 639 // search for the child 640 if ( i >= static_cast<sal_Int32>(m_aAccessibleChildren.size()) ) 641 xChild = CreateChild (i); 642 else 643 { 644 xChild = m_aAccessibleChildren[i]; 645 if ( !xChild.is() ) 646 xChild = CreateChild (i); 647 } 648 OSL_ENSURE( xChild.is(), "VCLXAccessibleList::getAccessibleChild: returning empty child!" ); 649 return xChild; 650 } 651 // ----------------------------------------------------------------------------- 652 653 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleParent( ) 654 throw (RuntimeException) 655 { 656 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 657 658 return m_xParent; 659 } 660 // ----------------------------------------------------------------------------- 661 662 sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleIndexInParent (void) 663 throw (::com::sun::star::uno::RuntimeException) 664 { 665 if (m_nIndexInParent != DEFAULT_INDEX_IN_PARENT) 666 return m_nIndexInParent; 667 else 668 return VCLXAccessibleComponent::getAccessibleIndexInParent(); 669 } 670 // ----------------------------------------------------------------------------- 671 672 sal_Int16 SAL_CALL VCLXAccessibleList::getAccessibleRole (void) 673 throw (RuntimeException) 674 { 675 return AccessibleRole::LIST; 676 } 677 // ----------------------------------------------------------------------------- 678 679 //===== XAccessibleComponent ================================================ 680 681 sal_Bool SAL_CALL VCLXAccessibleList::contains( const awt::Point& rPoint ) throw (RuntimeException) 682 { 683 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 684 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 685 686 sal_Bool bInside = sal_False; 687 688 Window* pListBox = GetWindow(); 689 if ( pListBox ) 690 { 691 Rectangle aRect( Point(0,0), pListBox->GetSizePixel() ); 692 bInside = aRect.IsInside( VCLPoint( rPoint ) ); 693 } 694 695 return bInside; 696 } 697 // ----------------------------------------------------------------------------- 698 699 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleAt( const awt::Point& rPoint ) 700 throw (RuntimeException) 701 { 702 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 703 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 704 705 Reference< XAccessible > xChild; 706 if ( m_pListBoxHelper ) 707 { 708 UpdateVisibleLineCount(); 709 if ( contains( rPoint ) && m_nVisibleLineCount > 0 ) 710 { 711 Point aPos = VCLPoint( rPoint ); 712 sal_uInt16 nEndPos = m_pListBoxHelper->GetTopEntry() + (sal_uInt16)m_nVisibleLineCount; 713 for ( sal_uInt16 i = m_pListBoxHelper->GetTopEntry(); i < nEndPos; ++i ) 714 { 715 if ( m_pListBoxHelper->GetBoundingRectangle(i).IsInside( aPos ) ) 716 { 717 xChild = getAccessibleChild(i); 718 break; 719 } 720 } 721 } 722 } 723 724 return xChild; 725 } 726 // ----------------------------------------------------------------------------- 727 728 //===== XServiceInfo ========================================================== 729 730 ::rtl::OUString VCLXAccessibleList::getImplementationName (void) 731 throw (RuntimeException) 732 { 733 return ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.comp.toolkit.AccessibleList")); 734 } 735 // ----------------------------------------------------------------------------- 736 737 Sequence< ::rtl::OUString > VCLXAccessibleList::getSupportedServiceNames (void) 738 throw (RuntimeException) 739 { 740 Sequence< ::rtl::OUString > aNames = VCLXAccessibleComponent::getSupportedServiceNames(); 741 sal_Int32 nLength = aNames.getLength(); 742 aNames.realloc( nLength + 1 ); 743 aNames[nLength] = ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.accessibility.AccessibleList")); 744 return aNames; 745 } 746 // ----------------------------------------------------------------------------- 747 748 void VCLXAccessibleList::UpdateVisibleLineCount() 749 { 750 if ( m_pListBoxHelper ) 751 { 752 if ( (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 753 m_nVisibleLineCount = m_pListBoxHelper->GetDisplayLineCount(); 754 else 755 { 756 sal_uInt16 nCols = 0, 757 nLines = 0; 758 m_pListBoxHelper->GetMaxVisColumnsAndLines (nCols, nLines); 759 m_nVisibleLineCount = nLines; 760 } 761 } 762 } 763 764 // ----------------------------------------------------------------------------- 765 void VCLXAccessibleList::UpdateEntryRange_Impl() 766 { 767 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 768 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 769 770 sal_Int32 nTop = m_nLastTopEntry; 771 772 if ( m_pListBoxHelper ) 773 nTop = m_pListBoxHelper->GetTopEntry(); 774 if ( nTop != m_nLastTopEntry ) 775 { 776 UpdateVisibleLineCount(); 777 sal_Int32 nBegin = Min( m_nLastTopEntry, nTop ); 778 sal_Int32 nEnd = Max( m_nLastTopEntry + m_nVisibleLineCount, nTop + m_nVisibleLineCount ); 779 for (sal_uInt16 i = static_cast<sal_uInt16>(nBegin); (i <= static_cast<sal_uInt16>(nEnd)); ++i) 780 { 781 sal_Bool bVisible = ( i >= nTop && i < ( nTop + m_nVisibleLineCount ) ); 782 Reference< XAccessible > xHold; 783 if ( i < m_aAccessibleChildren.size() ) 784 xHold = m_aAccessibleChildren[i]; 785 else if ( bVisible ) 786 xHold = CreateChild(i); 787 788 if ( xHold.is() ) 789 static_cast< VCLXAccessibleListItem* >( xHold.get() )->SetVisible( m_bVisible && bVisible ); 790 } 791 } 792 793 m_nLastTopEntry = nTop; 794 } 795 // ----------------------------------------------------------------------------- 796 sal_Bool VCLXAccessibleList::checkEntrySelected(sal_uInt16 _nPos,Any& _rNewValue,Reference< XAccessible >& _rxNewAcc) 797 { 798 OSL_ENSURE(m_pListBoxHelper,"Helper is not valid!"); 799 sal_Bool bNowSelected = sal_False; 800 if ( m_pListBoxHelper ) 801 { 802 bNowSelected = m_pListBoxHelper->IsEntryPosSelected (_nPos); 803 if ( bNowSelected ) 804 { 805 _rxNewAcc = CreateChild(_nPos); 806 _rNewValue <<= _rxNewAcc; 807 } 808 } 809 return bNowSelected; 810 } 811 // ----------------------------------------------------------------------------- 812 813 void VCLXAccessibleList::UpdateSelection_Impl(sal_uInt16) 814 { 815 uno::Any aOldValue, aNewValue; 816 817 { 818 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 819 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 820 Reference< XAccessible > xNewAcc; 821 822 if ( m_pListBoxHelper ) 823 { 824 sal_uInt16 i=0; 825 m_nCurSelectedPos = LISTBOX_ENTRY_NOTFOUND; 826 for ( ListItems::iterator aIter = m_aAccessibleChildren.begin(); 827 aIter != m_aAccessibleChildren.end(); ++aIter,++i) 828 { 829 Reference< XAccessible > xHold = *aIter; 830 if ( xHold.is() ) 831 { 832 VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() ); 833 // Retrieve the item's index from the list entry. 834 sal_Bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i); 835 if (bNowSelected) 836 m_nCurSelectedPos = i; 837 838 if ( bNowSelected && !pItem->IsSelected() ) 839 { 840 xNewAcc = *aIter; 841 aNewValue <<= xNewAcc; 842 } 843 else if ( pItem->IsSelected() ) 844 m_nLastSelectedPos = i; 845 846 pItem->SetSelected( bNowSelected ); 847 } 848 else 849 { // it could happen that a child was not created before 850 checkEntrySelected(i,aNewValue,xNewAcc); 851 } 852 } 853 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 854 if ( i < nCount ) // here we have to check the if any other listbox entry is selected 855 { 856 for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i ) 857 ; 858 } 859 if ( xNewAcc.is() && GetWindow()->HasFocus() ) 860 { 861 if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND ) 862 aOldValue <<= getAccessibleChild( (sal_Int32)m_nLastSelectedPos ); 863 aNewValue <<= xNewAcc; 864 } 865 } 866 } 867 if (!m_pListBoxHelper->IsInDropDown()) 868 { 869 } 870 else 871 { 872 if ( aNewValue.hasValue() || aOldValue.hasValue() ) 873 NotifyAccessibleEvent( 874 AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, 875 aOldValue, 876 aNewValue ); 877 //the SELECTION_CHANGED is not necessary 878 //NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, Any(), Any() ); 879 } 880 } 881 882 // ----------------------------------------------------------------------------- 883 // XAccessibleSelection 884 // ----------------------------------------------------------------------------- 885 void SAL_CALL VCLXAccessibleList::selectAccessibleChild( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 886 { 887 sal_Bool bNotify = sal_False; 888 889 { 890 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 891 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 892 893 if ( m_pListBoxHelper ) 894 { 895 checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False); 896 897 m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nChildIndex, sal_True ); 898 // call the select handler, don't handle events in this time 899 m_bDisableProcessEvent = true; 900 m_pListBoxHelper->Select(); 901 m_bDisableProcessEvent = false; 902 bNotify = sal_True; 903 } 904 } 905 906 if ( bNotify ) 907 UpdateSelection_Impl(); 908 } 909 // ----------------------------------------------------------------------------- 910 sal_Bool SAL_CALL VCLXAccessibleList::isAccessibleChildSelected( sal_Int32 nChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 911 { 912 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 913 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 914 915 sal_Bool bRet = sal_False; 916 if ( m_pListBoxHelper ) 917 { 918 checkSelection_Impl(nChildIndex,*m_pListBoxHelper,sal_False); 919 920 bRet = m_pListBoxHelper->IsEntryPosSelected( (sal_uInt16)nChildIndex ); 921 } 922 return bRet; 923 } 924 // ----------------------------------------------------------------------------- 925 void SAL_CALL VCLXAccessibleList::clearAccessibleSelection( ) throw (RuntimeException) 926 { 927 sal_Bool bNotify = sal_False; 928 929 { 930 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 931 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 932 933 if ( m_pListBoxHelper ) 934 { 935 m_pListBoxHelper->SetNoSelection(); 936 bNotify = sal_True; 937 } 938 } 939 940 if ( bNotify ) 941 UpdateSelection_Impl(); 942 } 943 // ----------------------------------------------------------------------------- 944 void SAL_CALL VCLXAccessibleList::selectAllAccessibleChildren( ) throw (RuntimeException) 945 { 946 sal_Bool bNotify = sal_False; 947 948 { 949 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 950 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 951 952 if ( m_pListBoxHelper ) 953 { 954 sal_uInt16 nCount = m_pListBoxHelper->GetEntryCount(); 955 for ( sal_uInt16 i = 0; i < nCount; ++i ) 956 m_pListBoxHelper->SelectEntryPos( i, sal_True ); 957 // call the select handler, don't handle events in this time 958 m_bDisableProcessEvent = true; 959 m_pListBoxHelper->Select(); 960 m_bDisableProcessEvent = false; 961 bNotify = sal_True; 962 } 963 } 964 965 if ( bNotify ) 966 UpdateSelection_Impl(); 967 } 968 // ----------------------------------------------------------------------------- 969 sal_Int32 SAL_CALL VCLXAccessibleList::getSelectedAccessibleChildCount( ) throw (RuntimeException) 970 { 971 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 972 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 973 974 sal_Int32 nCount = 0; 975 if ( m_pListBoxHelper ) 976 nCount = m_pListBoxHelper->GetSelectEntryCount(); 977 return nCount; 978 } 979 // ----------------------------------------------------------------------------- 980 Reference< XAccessible > SAL_CALL VCLXAccessibleList::getSelectedAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 981 { 982 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 983 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 984 985 if ( m_pListBoxHelper ) 986 { 987 checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_True); 988 return getAccessibleChild( (sal_Int32)m_pListBoxHelper->GetSelectEntryPos( (sal_uInt16)nSelectedChildIndex ) ); 989 } 990 991 return NULL; 992 } 993 // ----------------------------------------------------------------------------- 994 void SAL_CALL VCLXAccessibleList::deselectAccessibleChild( sal_Int32 nSelectedChildIndex ) throw (IndexOutOfBoundsException, RuntimeException) 995 { 996 sal_Bool bNotify = sal_False; 997 998 { 999 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1000 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1001 1002 if ( m_pListBoxHelper ) 1003 { 1004 checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,sal_False); 1005 1006 m_pListBoxHelper->SelectEntryPos( (sal_uInt16)nSelectedChildIndex, sal_False ); 1007 // call the select handler, don't handle events in this time 1008 m_bDisableProcessEvent = true; 1009 m_pListBoxHelper->Select(); 1010 m_bDisableProcessEvent = false; 1011 bNotify = sal_True; 1012 } 1013 } 1014 1015 if ( bNotify ) 1016 UpdateSelection_Impl(); 1017 } 1018 // ----------------------------------------------------------------------------- 1019 // accessibility::XAccessibleComponent 1020 awt::Rectangle VCLXAccessibleList::implGetBounds() throw (uno::RuntimeException) 1021 { 1022 awt::Rectangle aBounds ( 0, 0, 0, 0 ); 1023 if ( m_pListBoxHelper 1024 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 1025 { 1026 if ( m_pListBoxHelper->IsInDropDown() ) 1027 aBounds = AWTRectangle(m_pListBoxHelper->GetDropDownPosSizePixel()); 1028 } 1029 else 1030 { 1031 // a list has the same bounds as his parent but starts at (0,0) 1032 aBounds = VCLXAccessibleComponent::implGetBounds(); 1033 aBounds.X = 0; 1034 aBounds.Y = 0; 1035 if ( m_aBoxType == COMBOBOX ) 1036 { 1037 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 1038 if ( pBox ) 1039 { 1040 Size aSize = pBox->GetSubEdit()->GetSizePixel(); 1041 aBounds.Y += aSize.Height(); 1042 aBounds.Height -= aSize.Height(); 1043 } 1044 } 1045 } 1046 return aBounds; 1047 } 1048 // ----------------------------------------------------------------------------- 1049 1050 awt::Point VCLXAccessibleList::getLocationOnScreen( ) throw (uno::RuntimeException) 1051 { 1052 vos::OGuard aSolarGuard( Application::GetSolarMutex() ); 1053 ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() ); 1054 1055 awt::Point aPos; 1056 if ( m_pListBoxHelper 1057 && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN ) 1058 { 1059 if ( m_pListBoxHelper->IsInDropDown() ) 1060 aPos = AWTPoint(m_pListBoxHelper->GetDropDownPosSizePixel().TopLeft()); 1061 } 1062 else 1063 { 1064 aPos = VCLXAccessibleComponent::getLocationOnScreen(); 1065 if ( m_aBoxType == COMBOBOX ) 1066 { 1067 ComboBox* pBox = static_cast<ComboBox*>(GetWindow()); 1068 if ( pBox ) 1069 { 1070 aPos.Y += pBox->GetSubEdit()->GetSizePixel().Height(); 1071 } 1072 } 1073 } 1074 return aPos; 1075 } 1076 // ----------------------------------------------------------------------------- 1077 sal_Bool VCLXAccessibleList::IsInDropDown() 1078 { 1079 return m_pListBoxHelper->IsInDropDown(); 1080 } 1081 // ----------------------------------------------------------------------------- 1082 void VCLXAccessibleList::HandleDropOpen() 1083 { 1084 if ( !m_bDisableProcessEvent ) 1085 UpdateSelection_Impl(); 1086 if (m_nCurSelectedPos != LISTBOX_ENTRY_NOTFOUND && 1087 m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND) 1088 { 1089 Reference< XAccessible > xChild = getAccessibleChild(m_nCurSelectedPos); 1090 if(xChild.is()) 1091 { 1092 uno::Any aNewValue; 1093 aNewValue <<= xChild; 1094 NotifyAccessibleEvent(AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, uno::Any(), aNewValue ); 1095 } 1096 } 1097 } 1098