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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /accessibility/source/standard/vclxaccessiblelist.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'accessibility/source/standard/vclxaccessiblelist.cxx')
-rw-r--r--accessibility/source/standard/vclxaccessiblelist.cxx942
1 files changed, 942 insertions, 0 deletions
diff --git a/accessibility/source/standard/vclxaccessiblelist.cxx b/accessibility/source/standard/vclxaccessiblelist.cxx
new file mode 100644
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+++ b/accessibility/source/standard/vclxaccessiblelist.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <standard/vclxaccessiblelist.hxx>
+#include <standard/vclxaccessiblelistitem.hxx>
+#include <helper/listboxhelper.hxx>
+
+#include <unotools/accessiblerelationsethelper.hxx>
+#include <unotools/accessiblestatesethelper.hxx>
+#include <com/sun/star/accessibility/AccessibleStateType.hpp>
+#include <com/sun/star/accessibility/AccessibleEventId.hpp>
+#include <com/sun/star/accessibility/AccessibleRelationType.hpp>
+#include <com/sun/star/accessibility/AccessibleRole.hpp>
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+#include <o3tl/safeint.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/toolkit/combobox.hxx>
+#include <vcl/toolkit/lstbox.hxx>
+#include <toolkit/helper/convert.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::beans;
+using namespace ::com::sun::star::accessibility;
+using namespace ::accessibility;
+
+namespace
+{
+ /// @throws css::lang::IndexOutOfBoundsException
+ void checkSelection_Impl( sal_Int32 _nIndex, const IComboListBoxHelper& _rListBox, bool bSelected )
+ {
+ sal_Int32 nCount = bSelected ? _rListBox.GetSelectedEntryCount()
+ : _rListBox.GetEntryCount();
+ if ( _nIndex < 0 || _nIndex >= nCount )
+ throw css::lang::IndexOutOfBoundsException();
+ }
+}
+
+VCLXAccessibleList::VCLXAccessibleList (VCLXWindow* pVCLWindow, BoxType aBoxType,
+ const Reference< XAccessible >& _xParent)
+ : VCLXAccessibleComponent (pVCLWindow),
+ m_aBoxType (aBoxType),
+ m_nVisibleLineCount (0),
+ m_nIndexInParent (DEFAULT_INDEX_IN_PARENT),
+ m_nLastTopEntry ( 0 ),
+ m_nLastSelectedPos ( LISTBOX_ENTRY_NOTFOUND ),
+ m_bDisableProcessEvent ( false ),
+ m_bVisible ( true ),
+ m_nCurSelectedPos ( LISTBOX_ENTRY_NOTFOUND ),
+ m_xParent ( _xParent )
+{
+ // Because combo boxes and list boxes don't have a common interface for
+ // methods with identical signature we have to write down twice the
+ // same code.
+ switch (m_aBoxType)
+ {
+ case COMBOBOX:
+ {
+ VclPtr< ComboBox > pBox = GetAs< ComboBox >();
+ if ( pBox )
+ m_pListBoxHelper.reset( new VCLListBoxHelper<ComboBox> (*pBox) );
+ break;
+ }
+
+ case LISTBOX:
+ {
+ VclPtr< ListBox > pBox = GetAs< ListBox >();
+ if ( pBox )
+ m_pListBoxHelper.reset( new VCLListBoxHelper<ListBox> (*pBox) );
+ break;
+ }
+ }
+ UpdateVisibleLineCount();
+ if(m_pListBoxHelper)
+ {
+ m_nCurSelectedPos=m_pListBoxHelper->GetSelectedEntryPos(0);
+ }
+ sal_uInt16 nCount = static_cast<sal_uInt16>(getAccessibleChildCount());
+ m_aAccessibleChildren.reserve(nCount);
+}
+
+
+void VCLXAccessibleList::SetIndexInParent (sal_Int32 nIndex)
+{
+ m_nIndexInParent = nIndex;
+}
+
+
+void SAL_CALL VCLXAccessibleList::disposing()
+{
+ VCLXAccessibleComponent::disposing();
+
+ // Dispose all items in the list.
+ m_aAccessibleChildren.clear();
+
+ m_pListBoxHelper.reset();
+}
+
+
+void VCLXAccessibleList::FillAccessibleStateSet (utl::AccessibleStateSetHelper& rStateSet)
+{
+ SolarMutexGuard aSolarGuard;
+
+ VCLXAccessibleComponent::FillAccessibleStateSet( rStateSet );
+ // check if our list should be visible
+ if ( m_pListBoxHelper
+ && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN
+ && !m_pListBoxHelper->IsInDropDown() )
+ {
+ rStateSet.RemoveState (AccessibleStateType::VISIBLE);
+ rStateSet.RemoveState (AccessibleStateType::SHOWING);
+ m_bVisible = false;
+ }
+
+ // Both the combo box and list box are handled identical in the
+ // following but for some reason they don't have a common interface for
+ // the methods used.
+ if ( m_pListBoxHelper )
+ {
+ if ( m_pListBoxHelper->IsMultiSelectionEnabled() )
+ rStateSet.AddState( AccessibleStateType::MULTI_SELECTABLE);
+ rStateSet.AddState (AccessibleStateType::FOCUSABLE);
+ // All children are transient.
+ rStateSet.AddState (AccessibleStateType::MANAGES_DESCENDANTS);
+ }
+}
+
+void VCLXAccessibleList::notifyVisibleStates(bool _bSetNew )
+{
+ m_bVisible = _bSetNew;
+ Any aOldValue, aNewValue;
+ (_bSetNew ? aNewValue : aOldValue ) <<= AccessibleStateType::VISIBLE;
+ NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
+ (_bSetNew ? aNewValue : aOldValue ) <<= AccessibleStateType::SHOWING;
+ NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
+
+ ListItems::iterator aIter = m_aAccessibleChildren.begin();
+ UpdateVisibleLineCount();
+ // adjust the index inside the VCLXAccessibleListItem
+ for ( ; aIter != m_aAccessibleChildren.end(); )
+ {
+ Reference< XAccessible > xHold = *aIter;
+ if (!xHold.is())
+ {
+ aIter = m_aAccessibleChildren.erase(aIter);
+ }
+ else
+ {
+ VCLXAccessibleListItem* pItem = static_cast<VCLXAccessibleListItem*>(xHold.get());
+ const sal_Int32 nTopEntry = m_pListBoxHelper ? m_pListBoxHelper->GetTopEntry() : 0;
+ const sal_Int32 nPos = static_cast<sal_Int32>(aIter - m_aAccessibleChildren.begin());
+ bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) );
+ pItem->SetVisible( m_bVisible && bVisible );
+ ++aIter;
+ }
+
+ }
+}
+
+void VCLXAccessibleList::UpdateSelection_Acc (std::u16string_view /*sTextOfSelectedItem*/, bool b_IsDropDownList)
+{
+ if ( m_aBoxType != COMBOBOX )
+ return;
+
+ /* FIXME: is there something missing here? nIndex is unused. Looks like
+ * copy-paste from VCLXAccessibleList::UpdateSelection() */
+ // VclPtr< ComboBox > pBox = GetAs< ComboBox >();
+ // if ( pBox )
+ // {
+ // // Find the index of the selected item inside the VCL control...
+ // sal_Int32 nIndex = pBox->GetEntryPos(sTextOfSelectedItem);
+ // // ...and then find the associated accessibility object.
+ // if ( nIndex == LISTBOX_ENTRY_NOTFOUND )
+ // nIndex = 0;
+ UpdateSelection_Impl_Acc(b_IsDropDownList);
+ // }
+}
+
+
+void VCLXAccessibleList::UpdateSelection_Impl_Acc(bool bHasDropDownList)
+{
+ uno::Any aOldValue, aNewValue;
+
+ {
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+ Reference< XAccessible > xNewAcc;
+ if ( m_pListBoxHelper )
+ {
+ sal_Int32 i=0;
+ m_nCurSelectedPos = LISTBOX_ENTRY_NOTFOUND;
+ for ( const auto& rChild : m_aAccessibleChildren )
+ {
+ Reference< XAccessible > xHold = rChild;
+ if ( xHold.is() )
+ {
+ VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() );
+ // Retrieve the item's index from the list entry.
+ bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i);
+ if (bNowSelected)
+ m_nCurSelectedPos = i;
+
+ if ( bNowSelected && !pItem->IsSelected() )
+ {
+ xNewAcc = rChild;
+ aNewValue <<= xNewAcc;
+ }
+ else if ( pItem->IsSelected() )
+ m_nLastSelectedPos = i;
+
+ pItem->SetSelected( bNowSelected );
+ }
+ else
+ { // it could happen that a child was not created before
+ checkEntrySelected(i,aNewValue,xNewAcc);
+ }
+ ++i;
+ }
+ const sal_Int32 nCount = m_pListBoxHelper->GetEntryCount();
+ if ( i < nCount ) // here we have to check the if any other listbox entry is selected
+ {
+ for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i )
+ ;
+ }
+ if ( xNewAcc.is() && GetWindow()->HasFocus() )
+ {
+ if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND )
+ aOldValue <<= getAccessibleChild( m_nLastSelectedPos );
+ aNewValue <<= xNewAcc;
+ }
+ }
+ }
+
+ if (m_aBoxType == COMBOBOX)
+ {
+ //VCLXAccessibleDropDownComboBox
+ //when in list is dropped down, xText = NULL
+ if (bHasDropDownList && m_pListBoxHelper && m_pListBoxHelper->IsInDropDown())
+ {
+ if ( aNewValue.hasValue() || aOldValue.hasValue() )
+ {
+ NotifyAccessibleEvent(
+ AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
+ aOldValue,
+ aNewValue );
+
+ NotifyListItem(aNewValue);
+ }
+ }
+ else
+ {
+ //VCLXAccessibleComboBox
+ NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, uno::Any(), uno::Any() );
+ }
+ }
+ else if (m_aBoxType == LISTBOX)
+ {
+ if ( aNewValue.hasValue() || aOldValue.hasValue() )
+ {
+ NotifyAccessibleEvent(
+ AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
+ aOldValue,
+ aNewValue );
+
+ NotifyListItem(aNewValue);
+ }
+ }
+}
+
+void VCLXAccessibleList::NotifyListItem(css::uno::Any const & val)
+{
+ Reference< XAccessible > xCurItem;
+ val >>= xCurItem;
+ if (xCurItem.is())
+ {
+ VCLXAccessibleListItem* pCurItem = static_cast< VCLXAccessibleListItem* >(xCurItem.get());
+ if (pCurItem)
+ {
+ pCurItem->NotifyAccessibleEvent(AccessibleEventId::SELECTION_CHANGED,Any(),Any());
+ }
+ }
+}
+
+void VCLXAccessibleList::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent, bool b_IsDropDownList)
+{
+ switch ( rVclWindowEvent.GetId() )
+ {
+ case VclEventId::DropdownSelect:
+ case VclEventId::ListboxSelect:
+ if ( !m_bDisableProcessEvent )
+ UpdateSelection_Impl_Acc(b_IsDropDownList);
+ break;
+ case VclEventId::WindowGetFocus:
+ break;
+ case VclEventId::ControlGetFocus:
+ {
+ VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
+ if (m_aBoxType == COMBOBOX && b_IsDropDownList)
+ {
+ //VCLXAccessibleDropDownComboBox
+ }
+ else if (m_aBoxType == LISTBOX && b_IsDropDownList)
+ {
+ }
+ else if ( m_aBoxType == LISTBOX && !b_IsDropDownList)
+ {
+ if ( m_pListBoxHelper )
+ {
+ uno::Any aOldValue,
+ aNewValue;
+ sal_Int32 nPos = m_nCurSelectedPos; //m_pListBoxHelper->GetSelectedEntryPos();
+
+ if ( nPos == LISTBOX_ENTRY_NOTFOUND )
+ nPos = m_pListBoxHelper->GetTopEntry();
+ if ( nPos != LISTBOX_ENTRY_NOTFOUND )
+ aNewValue <<= CreateChild(nPos);
+ NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
+ aOldValue,
+ aNewValue );
+ }
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+}
+
+void VCLXAccessibleList::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent)
+{
+ // Create a reference to this object to prevent an early release of the
+ // listbox (VclEventId::ObjectDying).
+ Reference< XAccessible > xHoldAlive = this;
+
+ switch ( rVclWindowEvent.GetId() )
+ {
+ case VclEventId::DropdownOpen:
+ notifyVisibleStates(true);
+ break;
+ case VclEventId::DropdownClose:
+ notifyVisibleStates(false);
+ break;
+ case VclEventId::ListboxScrolled:
+ UpdateEntryRange_Impl();
+ break;
+
+ // The selection events VclEventId::ComboboxSelect and
+ // VclEventId::ComboboxDeselect are not handled here because here we
+ // have no access to the edit field. Its text is necessary to
+ // identify the currently selected item.
+
+ case VclEventId::ObjectDying:
+ {
+ dispose();
+
+ VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
+ break;
+ }
+
+ case VclEventId::ListboxItemRemoved:
+ case VclEventId::ComboboxItemRemoved:
+ case VclEventId::ListboxItemAdded:
+ case VclEventId::ComboboxItemAdded:
+ HandleChangedItemList();
+ break;
+ case VclEventId::ControlGetFocus:
+ {
+ VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
+ // Added by IBM Symphony Acc team to handle the list item focus when List control get focus
+ bool b_IsDropDownList = true;
+ if (m_pListBoxHelper)
+ b_IsDropDownList = ((m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN);
+ if ( m_aBoxType == LISTBOX && !b_IsDropDownList )
+ {
+ if ( m_pListBoxHelper )
+ {
+ uno::Any aOldValue,
+ aNewValue;
+ sal_Int32 nPos = m_nCurSelectedPos;
+
+ if ( nPos == LISTBOX_ENTRY_NOTFOUND )
+ nPos = m_pListBoxHelper->GetTopEntry();
+ if ( nPos != LISTBOX_ENTRY_NOTFOUND )
+ aNewValue <<= CreateChild(nPos);
+ NotifyAccessibleEvent( AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
+ aOldValue,
+ aNewValue );
+ }
+ }
+ }
+ break;
+
+ default:
+ VCLXAccessibleComponent::ProcessWindowEvent (rVclWindowEvent);
+ }
+}
+
+ void VCLXAccessibleList::FillAccessibleRelationSet( utl::AccessibleRelationSetHelper& rRelationSet )
+{
+ VclPtr< ListBox > pBox = GetAs< ListBox >();
+ if( m_aBoxType == LISTBOX )
+ {
+ if (m_pListBoxHelper && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) != WB_DROPDOWN)
+ {
+ uno::Sequence< uno::Reference< uno::XInterface > > aSequence { pBox->GetAccessible() };
+ rRelationSet.AddRelation( com::sun::star::accessibility::AccessibleRelation( com::sun::star::accessibility::AccessibleRelationType::MEMBER_OF, aSequence ) );
+ }
+ }
+ else
+ {
+ VCLXAccessibleComponent::FillAccessibleRelationSet(rRelationSet);
+ }
+}
+
+
+/** To find out which item is currently selected and to update the SELECTED
+ state of the associated accessibility objects accordingly we exploit the
+ fact that the
+*/
+void VCLXAccessibleList::UpdateSelection (std::u16string_view sTextOfSelectedItem)
+{
+ if ( m_aBoxType != COMBOBOX )
+ return;
+
+ VclPtr< ComboBox > pBox = GetAs< ComboBox >();
+ if ( pBox )
+ {
+ // Find the index of the selected item inside the VCL control...
+ sal_Int32 nIndex = pBox->GetEntryPos(sTextOfSelectedItem);
+ // ...and then find the associated accessibility object.
+ if ( nIndex == LISTBOX_ENTRY_NOTFOUND )
+ nIndex = 0;
+ UpdateSelection_Impl(nIndex);
+ }
+}
+
+
+Reference<XAccessible> VCLXAccessibleList::CreateChild (sal_Int32 nPos)
+{
+ Reference<XAccessible> xChild;
+
+ if ( o3tl::make_unsigned(nPos) >= m_aAccessibleChildren.size() )
+ {
+ m_aAccessibleChildren.resize(nPos + 1);
+
+ // insert into the container
+ xChild = new VCLXAccessibleListItem(nPos, this);
+ m_aAccessibleChildren[nPos] = xChild;
+ }
+ else
+ {
+ xChild = m_aAccessibleChildren[nPos];
+ // check if position is empty and can be used else we have to adjust all entries behind this
+ if (!xChild.is())
+ {
+ xChild = new VCLXAccessibleListItem(nPos, this);
+ m_aAccessibleChildren[nPos] = xChild;
+ }
+ }
+
+ if ( xChild.is() )
+ {
+ // Just add the SELECTED state.
+ bool bNowSelected = false;
+ if ( m_pListBoxHelper )
+ bNowSelected = m_pListBoxHelper->IsEntryPosSelected(nPos);
+ if (bNowSelected)
+ m_nCurSelectedPos = nPos;
+ VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >(xChild.get());
+ pItem->SetSelected( bNowSelected );
+
+ // Set the child's VISIBLE state.
+ UpdateVisibleLineCount();
+ const sal_Int32 nTopEntry = m_pListBoxHelper ? m_pListBoxHelper->GetTopEntry() : 0;
+ bool bVisible = ( nPos>=nTopEntry && nPos<( nTopEntry + m_nVisibleLineCount ) );
+ pItem->SetVisible( m_bVisible && bVisible );
+ }
+
+ return xChild;
+}
+
+
+void VCLXAccessibleList::HandleChangedItemList()
+{
+ m_aAccessibleChildren.clear();
+ NotifyAccessibleEvent (
+ AccessibleEventId::INVALIDATE_ALL_CHILDREN,
+ Any(), Any());
+}
+
+
+IMPLEMENT_FORWARD_XINTERFACE2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE)
+IMPLEMENT_FORWARD_XTYPEPROVIDER2(VCLXAccessibleList, VCLXAccessibleComponent, VCLXAccessibleList_BASE)
+
+// XAccessible
+
+Reference<XAccessibleContext> SAL_CALL
+ VCLXAccessibleList::getAccessibleContext()
+{
+ return this;
+}
+
+
+// XAccessibleContext
+
+sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleChildCount()
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+ return implGetAccessibleChildCount();
+}
+
+sal_Int32 VCLXAccessibleList::implGetAccessibleChildCount()
+{
+ sal_Int32 nCount = 0;
+ if ( m_pListBoxHelper )
+ nCount = m_pListBoxHelper->GetEntryCount();
+
+ return nCount;
+}
+
+Reference<XAccessible> SAL_CALL VCLXAccessibleList::getAccessibleChild (sal_Int32 i)
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ if ( i < 0 || i >= getAccessibleChildCount() )
+ throw IndexOutOfBoundsException();
+
+ Reference< XAccessible > xChild;
+ // search for the child
+ if ( o3tl::make_unsigned(i) >= m_aAccessibleChildren.size() )
+ xChild = CreateChild (i);
+ else
+ {
+ xChild = m_aAccessibleChildren[i];
+ if ( !xChild.is() )
+ xChild = CreateChild (i);
+ }
+ OSL_ENSURE( xChild.is(), "VCLXAccessibleList::getAccessibleChild: returning empty child!" );
+ return xChild;
+}
+
+Reference< XAccessible > SAL_CALL VCLXAccessibleList::getAccessibleParent( )
+{
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ return m_xParent;
+}
+
+sal_Int32 SAL_CALL VCLXAccessibleList::getAccessibleIndexInParent()
+{
+ if (m_nIndexInParent != DEFAULT_INDEX_IN_PARENT)
+ return m_nIndexInParent;
+ else
+ return VCLXAccessibleComponent::getAccessibleIndexInParent();
+}
+
+sal_Int16 SAL_CALL VCLXAccessibleList::getAccessibleRole()
+{
+ return AccessibleRole::LIST;
+}
+
+// XServiceInfo
+OUString VCLXAccessibleList::getImplementationName()
+{
+ return "com.sun.star.comp.toolkit.AccessibleList";
+}
+
+Sequence< OUString > VCLXAccessibleList::getSupportedServiceNames()
+{
+ return comphelper::concatSequences(VCLXAccessibleComponent::getSupportedServiceNames(),
+ Sequence<OUString>{"com.sun.star.accessibility.AccessibleList"});
+}
+
+void VCLXAccessibleList::UpdateVisibleLineCount()
+{
+ if ( m_pListBoxHelper )
+ {
+ if ( (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN )
+ m_nVisibleLineCount = m_pListBoxHelper->GetDisplayLineCount();
+ else
+ {
+ sal_uInt16 nCols = 0,
+ nLines = 0;
+ m_pListBoxHelper->GetMaxVisColumnsAndLines (nCols, nLines);
+ m_nVisibleLineCount = nLines;
+ }
+ }
+}
+
+void VCLXAccessibleList::UpdateEntryRange_Impl()
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ sal_Int32 nTop = m_nLastTopEntry;
+
+ if ( m_pListBoxHelper )
+ nTop = m_pListBoxHelper->GetTopEntry();
+ if ( nTop != m_nLastTopEntry )
+ {
+ UpdateVisibleLineCount();
+ sal_Int32 nBegin = std::min( m_nLastTopEntry, nTop );
+ sal_Int32 nEnd = std::max( m_nLastTopEntry + m_nVisibleLineCount, nTop + m_nVisibleLineCount );
+ for (sal_Int32 i = nBegin; (i <= nEnd); ++i)
+ {
+ bool bVisible = ( i >= nTop && i < ( nTop + m_nVisibleLineCount ) );
+ Reference< XAccessible > xHold;
+ if ( o3tl::make_unsigned(i) < m_aAccessibleChildren.size() )
+ xHold = m_aAccessibleChildren[i];
+ else if ( bVisible )
+ xHold = CreateChild(i);
+
+ if ( xHold.is() )
+ static_cast< VCLXAccessibleListItem* >( xHold.get() )->SetVisible( m_bVisible && bVisible );
+ }
+ }
+
+ m_nLastTopEntry = nTop;
+}
+
+bool VCLXAccessibleList::checkEntrySelected(sal_Int32 _nPos,Any& _rNewValue,Reference< XAccessible >& _rxNewAcc)
+{
+ OSL_ENSURE(m_pListBoxHelper,"Helper is not valid!");
+ bool bNowSelected = false;
+ if ( m_pListBoxHelper )
+ {
+ bNowSelected = m_pListBoxHelper->IsEntryPosSelected (_nPos);
+ if ( bNowSelected )
+ {
+ _rxNewAcc = CreateChild(_nPos);
+ _rNewValue <<= _rxNewAcc;
+ }
+ }
+ return bNowSelected;
+}
+
+
+void VCLXAccessibleList::UpdateSelection_Impl(sal_Int32)
+{
+ uno::Any aOldValue, aNewValue;
+
+ {
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+ Reference< XAccessible > xNewAcc;
+
+ if ( m_pListBoxHelper )
+ {
+ sal_Int32 i=0;
+ m_nCurSelectedPos = LISTBOX_ENTRY_NOTFOUND;
+ for ( const auto& rChild : m_aAccessibleChildren )
+ {
+ Reference< XAccessible > xHold = rChild;
+ if ( xHold.is() )
+ {
+ VCLXAccessibleListItem* pItem = static_cast< VCLXAccessibleListItem* >( xHold.get() );
+ // Retrieve the item's index from the list entry.
+ bool bNowSelected = m_pListBoxHelper->IsEntryPosSelected (i);
+ if (bNowSelected)
+ m_nCurSelectedPos = i;
+
+ if ( bNowSelected && !pItem->IsSelected() )
+ {
+ xNewAcc = rChild;
+ aNewValue <<= xNewAcc;
+ }
+ else if ( pItem->IsSelected() )
+ m_nLastSelectedPos = i;
+
+ pItem->SetSelected( bNowSelected );
+ }
+ else
+ { // it could happen that a child was not created before
+ checkEntrySelected(i,aNewValue,xNewAcc);
+ }
+ ++i;
+ }
+ const sal_Int32 nCount = m_pListBoxHelper->GetEntryCount();
+ if ( i < nCount ) // here we have to check the if any other listbox entry is selected
+ {
+ for (; i < nCount && !checkEntrySelected(i,aNewValue,xNewAcc) ;++i )
+ ;
+ }
+ if ( xNewAcc.is() && GetWindow()->HasFocus() )
+ {
+ if ( m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND )
+ aOldValue <<= getAccessibleChild( m_nLastSelectedPos );
+ aNewValue <<= xNewAcc;
+ }
+ if (m_pListBoxHelper->IsInDropDown())
+ {
+ if ( aNewValue.hasValue() || aOldValue.hasValue() )
+ NotifyAccessibleEvent(
+ AccessibleEventId::ACTIVE_DESCENDANT_CHANGED,
+ aOldValue,
+ aNewValue );
+ //the SELECTION_CHANGED is not necessary
+ //NotifyAccessibleEvent( AccessibleEventId::SELECTION_CHANGED, Any(), Any() );
+ }
+ }
+ }
+}
+
+
+// XAccessibleSelection
+
+void SAL_CALL VCLXAccessibleList::selectAccessibleChild( sal_Int32 nChildIndex )
+{
+ bool bNotify = false;
+
+ {
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ if ( m_pListBoxHelper )
+ {
+ checkSelection_Impl(nChildIndex,*m_pListBoxHelper,false);
+
+ m_pListBoxHelper->SelectEntryPos( static_cast<sal_uInt16>(nChildIndex) );
+ // call the select handler, don't handle events in this time
+ m_bDisableProcessEvent = true;
+ m_pListBoxHelper->Select();
+ m_bDisableProcessEvent = false;
+ bNotify = true;
+ }
+ }
+
+ if ( bNotify )
+ UpdateSelection_Impl();
+}
+
+sal_Bool SAL_CALL VCLXAccessibleList::isAccessibleChildSelected( sal_Int32 nChildIndex )
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ bool bRet = false;
+ if ( m_pListBoxHelper )
+ {
+ checkSelection_Impl(nChildIndex,*m_pListBoxHelper,false);
+
+ bRet = m_pListBoxHelper->IsEntryPosSelected( static_cast<sal_uInt16>(nChildIndex) );
+ }
+ return bRet;
+}
+
+void SAL_CALL VCLXAccessibleList::clearAccessibleSelection( )
+{
+ bool bNotify = false;
+
+ {
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ if ( m_pListBoxHelper )
+ {
+ m_pListBoxHelper->SetNoSelection();
+ bNotify = true;
+ }
+ }
+
+ if ( bNotify )
+ UpdateSelection_Impl();
+}
+
+void SAL_CALL VCLXAccessibleList::selectAllAccessibleChildren( )
+{
+ bool bNotify = false;
+
+ {
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ if ( m_pListBoxHelper )
+ {
+ const sal_Int32 nCount = m_pListBoxHelper->GetEntryCount();
+ for ( sal_Int32 i = 0; i < nCount; ++i )
+ m_pListBoxHelper->SelectEntryPos( i );
+ // call the select handler, don't handle events in this time
+ m_bDisableProcessEvent = true;
+ m_pListBoxHelper->Select();
+ m_bDisableProcessEvent = false;
+ bNotify = true;
+ }
+ }
+
+ if ( bNotify )
+ UpdateSelection_Impl();
+}
+
+sal_Int32 SAL_CALL VCLXAccessibleList::getSelectedAccessibleChildCount( )
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ sal_Int32 nCount = 0;
+ if ( m_pListBoxHelper )
+ nCount = m_pListBoxHelper->GetSelectedEntryCount();
+ return nCount;
+}
+
+Reference< XAccessible > SAL_CALL VCLXAccessibleList::getSelectedAccessibleChild( sal_Int32 nSelectedChildIndex )
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ if ( m_pListBoxHelper )
+ {
+ checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,true);
+ return getAccessibleChild( m_pListBoxHelper->GetSelectedEntryPos( static_cast<sal_uInt16>(nSelectedChildIndex) ) );
+ }
+
+ return nullptr;
+}
+
+void SAL_CALL VCLXAccessibleList::deselectAccessibleChild( sal_Int32 nSelectedChildIndex )
+{
+ bool bNotify = false;
+
+ {
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ if ( m_pListBoxHelper )
+ {
+ checkSelection_Impl(nSelectedChildIndex,*m_pListBoxHelper,false);
+
+ m_pListBoxHelper->SelectEntryPos( static_cast<sal_uInt16>(nSelectedChildIndex), false );
+ // call the select handler, don't handle events in this time
+ m_bDisableProcessEvent = true;
+ m_pListBoxHelper->Select();
+ m_bDisableProcessEvent = false;
+ bNotify = true;
+ }
+ }
+
+ if ( bNotify )
+ UpdateSelection_Impl();
+}
+
+awt::Rectangle VCLXAccessibleList::implGetBounds()
+{
+ awt::Rectangle aBounds ( 0, 0, 0, 0 );
+ if ( m_pListBoxHelper
+ && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN )
+ {
+ if ( m_pListBoxHelper->IsInDropDown() )
+ aBounds = AWTRectangle(m_pListBoxHelper->GetDropDownPosSizePixel());
+ }
+ else
+ {
+ // a list has the same bounds as his parent but starts at (0,0)
+ aBounds = VCLXAccessibleComponent::implGetBounds();
+ aBounds.X = 0;
+ aBounds.Y = 0;
+ if ( m_aBoxType == COMBOBOX )
+ {
+ VclPtr< ComboBox > pBox = GetAs< ComboBox >();
+ if ( pBox )
+ {
+ Size aSize = pBox->GetSubEdit()->GetSizePixel();
+ aBounds.Y += aSize.Height();
+ aBounds.Height -= aSize.Height();
+ }
+ }
+ }
+ return aBounds;
+}
+
+
+awt::Point VCLXAccessibleList::getLocationOnScreen( )
+{
+ SolarMutexGuard aSolarGuard;
+ ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
+
+ awt::Point aPos;
+ if ( m_pListBoxHelper
+ && (m_pListBoxHelper->GetStyle() & WB_DROPDOWN ) == WB_DROPDOWN )
+ {
+ if ( m_pListBoxHelper->IsInDropDown() )
+ aPos = AWTPoint(m_pListBoxHelper->GetDropDownPosSizePixel().TopLeft());
+ }
+ else
+ {
+ aPos = VCLXAccessibleComponent::getLocationOnScreen();
+ if ( m_aBoxType == COMBOBOX )
+ {
+ VclPtr< ComboBox > pBox = GetAs< ComboBox >();
+ if ( pBox )
+ {
+ aPos.Y += pBox->GetSubEdit()->GetSizePixel().Height();
+ }
+ }
+ }
+ return aPos;
+}
+
+
+bool VCLXAccessibleList::IsInDropDown() const
+{
+ return m_pListBoxHelper->IsInDropDown();
+}
+
+
+void VCLXAccessibleList::HandleDropOpen()
+{
+ if ( !m_bDisableProcessEvent )
+ UpdateSelection_Impl();
+ if (m_nCurSelectedPos != LISTBOX_ENTRY_NOTFOUND &&
+ m_nLastSelectedPos != LISTBOX_ENTRY_NOTFOUND)
+ {
+ Reference< XAccessible > xChild = getAccessibleChild(m_nCurSelectedPos);
+ if(xChild.is())
+ {
+ uno::Any aNewValue;
+ aNewValue <<= xChild;
+ NotifyAccessibleEvent(AccessibleEventId::ACTIVE_DESCENDANT_CHANGED, uno::Any(), aNewValue );
+ }
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */