1 files changed, 634 insertions, 0 deletions
diff --git a/vcl/source/window/accessibility.cxx b/vcl/source/window/accessibility.cxx
new file mode 100644
index 000000000..ddcfd56aa
--- /dev/null
+++ b/vcl/source/window/accessibility.cxx
@@ -0,0 +1,634 @@
+/* -*- 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 <vcl/layout.hxx>
+#include <vcl/fixed.hxx>
+#include <vcl/window.hxx>
+#include <vcl/menu.hxx>
+#include <vcl/wrkwin.hxx>
+#include <vcl/popupmenuwindow.hxx>
+
+#include <window.h>
+#include <brdwin.hxx>
+
+#include <com/sun/star/accessibility/XAccessible.hpp>
+#include <com/sun/star/accessibility/AccessibleRole.hpp>
+#include <com/sun/star/accessibility/AccessibleStateType.hpp>
+#include <com/sun/star/accessibility/XAccessibleEditableText.hpp>
+#include <com/sun/star/awt/XWindowPeer.hpp>
+
+#include <sal/log.hxx>
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::datatransfer::clipboard;
+using namespace ::com::sun::star::datatransfer::dnd;
+using namespace ::com::sun::star;
+
+
+ImplAccessibleInfos::ImplAccessibleInfos()
+{
+    nAccessibleRole = 0xFFFF;
+    pLabeledByWindow = nullptr;
+    pLabelForWindow = nullptr;
+    pMemberOfWindow = nullptr;
+}
+
+ImplAccessibleInfos::~ImplAccessibleInfos()
+{
+}
+
+namespace vcl {
+
+css::uno::Reference< css::accessibility::XAccessible > Window::GetAccessible( bool bCreate )
+{
+    // do not optimize hierarchy for the top level border win (ie, when there is no parent)
+    /* // do not optimize accessible hierarchy at all to better reflect real VCL hierarchy
+    if ( GetParent() && ( GetType() == WindowType::BORDERWINDOW ) && ( GetChildCount() == 1 ) )
+    //if( !ImplIsAccessibleCandidate() )
+    {
+        vcl::Window* pChild = GetAccessibleChildWindow( 0 );
+        if ( pChild )
+            return pChild->GetAccessible();
+    }
+    */
+    if ( !mpWindowImpl )
+        return css::uno::Reference< css::accessibility::XAccessible >();
+    if ( !mpWindowImpl->mxAccessible.is() && bCreate )
+        mpWindowImpl->mxAccessible = CreateAccessible();
+
+    return mpWindowImpl->mxAccessible;
+}
+
+css::uno::Reference< css::accessibility::XAccessible > Window::CreateAccessible()
+{
+    css::uno::Reference< css::accessibility::XAccessible > xAcc( GetComponentInterface(), css::uno::UNO_QUERY );
+    return xAcc;
+}
+
+void Window::SetAccessible( const css::uno::Reference< css::accessibility::XAccessible >& x )
+{
+    if (!mpWindowImpl)
+        return;
+
+    mpWindowImpl->mxAccessible = x;
+}
+
+// skip all border windows that are not top level frames
+bool Window::ImplIsAccessibleCandidate() const
+{
+    if( !mpWindowImpl->mbBorderWin )
+        return true;
+    else
+        // #101741 do not check for WB_CLOSEABLE because undecorated floaters (like menus!) are closeable
+        if( mpWindowImpl->mbFrame && mpWindowImpl->mnStyle & (WB_MOVEABLE | WB_SIZEABLE) )
+            return true;
+        else
+            return false;
+}
+
+bool Window::ImplIsAccessibleNativeFrame() const
+{
+    if( mpWindowImpl->mbFrame )
+        // #101741 do not check for WB_CLOSEABLE because undecorated floaters (like menus!) are closeable
+        if( mpWindowImpl->mnStyle & (WB_MOVEABLE | WB_SIZEABLE) )
+            return true;
+        else
+            return false;
+    else
+        return false;
+}
+
+vcl::Window* Window::GetAccessibleParentWindow() const
+{
+    if (!mpWindowImpl || ImplIsAccessibleNativeFrame())
+        return nullptr;
+
+    vcl::Window* pParent = mpWindowImpl->mpParent;
+    if( GetType() == WindowType::MENUBARWINDOW )
+    {
+        // report the menubar as a child of THE workwindow
+        vcl::Window *pWorkWin = GetParent()->mpWindowImpl->mpFirstChild;
+        while( pWorkWin && (pWorkWin == this) )
+            pWorkWin = pWorkWin->mpWindowImpl->mpNext;
+        pParent = pWorkWin;
+    }
+    // If this is a floating window which has a native border window, then that border should be reported as
+    // the accessible parent, unless the floating window is a PopupMenuFloatingWindow
+
+    // The logic here has to match that of AccessibleFactory::createAccessibleContext in
+    // accessibility/source/helper/acc_factory.cxx to avoid PopupMenuFloatingWindow
+    // becoming a11y parents of themselves
+    else if( GetType() == WindowType::FLOATINGWINDOW &&
+        mpWindowImpl->mpBorderWindow && mpWindowImpl->mpBorderWindow->mpWindowImpl->mbFrame &&
+        !PopupMenuFloatingWindow::isPopupMenu(this))
+    {
+        pParent = mpWindowImpl->mpBorderWindow;
+    }
+    else if( pParent && !pParent->ImplIsAccessibleCandidate() )
+    {
+        pParent = pParent->mpWindowImpl->mpParent;
+    }
+    return pParent;
+}
+
+sal_uInt16 Window::GetAccessibleChildWindowCount()
+{
+    if (!mpWindowImpl)
+        return 0;
+
+    sal_uInt16 nChildren = 0;
+    vcl::Window* pChild = mpWindowImpl->mpFirstChild;
+    while( pChild )
+    {
+        if( pChild->IsVisible() )
+            nChildren++;
+        pChild = pChild->mpWindowImpl->mpNext;
+    }
+
+    // report the menubarwindow as a child of THE workwindow
+    if( GetType() == WindowType::BORDERWINDOW )
+    {
+        ImplBorderWindow *pBorderWindow = static_cast<ImplBorderWindow*>(this);
+        if( pBorderWindow->mpMenuBarWindow &&
+            pBorderWindow->mpMenuBarWindow->IsVisible()
+            )
+            --nChildren;
+    }
+    else if( GetType() == WindowType::WORKWINDOW )
+    {
+        WorkWindow *pWorkWindow = static_cast<WorkWindow*>(this);
+        if( pWorkWindow->GetMenuBar() &&
+            pWorkWindow->GetMenuBar()->GetWindow() &&
+            pWorkWindow->GetMenuBar()->GetWindow()->IsVisible()
+            )
+            ++nChildren;
+    }
+
+    return nChildren;
+}
+
+vcl::Window* Window::GetAccessibleChildWindow( sal_uInt16 n )
+{
+    // report the menubarwindow as the first child of THE workwindow
+    if( GetType() == WindowType::WORKWINDOW && static_cast<WorkWindow *>(this)->GetMenuBar() )
+    {
+        if( n == 0 )
+        {
+            MenuBar *pMenuBar = static_cast<WorkWindow *>(this)->GetMenuBar();
+            if( pMenuBar->GetWindow() && pMenuBar->GetWindow()->IsVisible() )
+                return pMenuBar->GetWindow();
+        }
+        else
+            --n;
+    }
+
+    // transform n to child number including invisible children
+    sal_uInt16 nChildren = n;
+    vcl::Window* pChild = mpWindowImpl->mpFirstChild;
+    while( pChild )
+    {
+        if( pChild->IsVisible() )
+        {
+            if( ! nChildren )
+                break;
+            nChildren--;
+        }
+        pChild = pChild->mpWindowImpl->mpNext;
+    }
+
+    if( GetType() == WindowType::BORDERWINDOW && pChild && pChild->GetType() == WindowType::MENUBARWINDOW )
+    {
+        do pChild = pChild->mpWindowImpl->mpNext; while( pChild && ! pChild->IsVisible() );
+        SAL_WARN_IF( !pChild, "vcl", "GetAccessibleChildWindow(): wrong index in border window");
+    }
+
+    if ( pChild && ( pChild->GetType() == WindowType::BORDERWINDOW ) && ( pChild->GetChildCount() == 1 ) )
+    {
+        pChild = pChild->GetChild( 0 );
+    }
+    return pChild;
+}
+
+void Window::SetAccessibleRole( sal_uInt16 nRole )
+{
+    if ( !mpWindowImpl->mpAccessibleInfos )
+        mpWindowImpl->mpAccessibleInfos.reset( new ImplAccessibleInfos );
+
+    SAL_WARN_IF( mpWindowImpl->mpAccessibleInfos->nAccessibleRole != 0xFFFF, "vcl", "AccessibleRole already set!" );
+    mpWindowImpl->mpAccessibleInfos->nAccessibleRole = nRole;
+}
+
+sal_uInt16 Window::getDefaultAccessibleRole() const
+{
+    sal_uInt16 nRole = 0xFFFF;
+    switch ( GetType() )
+    {
+        case WindowType::MESSBOX:    // MT: Would be nice to have special roles!
+        case WindowType::INFOBOX:
+        case WindowType::WARNINGBOX:
+        case WindowType::ERRORBOX:
+        case WindowType::QUERYBOX: nRole = accessibility::AccessibleRole::ALERT; break;
+
+        case WindowType::MODELESSDIALOG:
+        case WindowType::MODALDIALOG:
+        case WindowType::TABDIALOG:
+        case WindowType::BUTTONDIALOG:
+        case WindowType::DIALOG: nRole = accessibility::AccessibleRole::DIALOG; break;
+
+        case WindowType::PUSHBUTTON:
+        case WindowType::OKBUTTON:
+        case WindowType::CANCELBUTTON:
+        case WindowType::HELPBUTTON:
+        case WindowType::IMAGEBUTTON:
+        case WindowType::MOREBUTTON:
+        case WindowType::SPINBUTTON: nRole = accessibility::AccessibleRole::PUSH_BUTTON; break;
+        case WindowType::MENUBUTTON: nRole = accessibility::AccessibleRole::BUTTON_MENU; break;
+
+        case WindowType::RADIOBUTTON: nRole = accessibility::AccessibleRole::RADIO_BUTTON; break;
+        case WindowType::TRISTATEBOX:
+        case WindowType::CHECKBOX: nRole = accessibility::AccessibleRole::CHECK_BOX; break;
+
+        case WindowType::MULTILINEEDIT: nRole = accessibility::AccessibleRole::SCROLL_PANE; break;
+
+        case WindowType::PATTERNFIELD:
+        case WindowType::EDIT: nRole = static_cast<Edit const *>(this)->IsPassword() ? accessibility::AccessibleRole::PASSWORD_TEXT : accessibility::AccessibleRole::TEXT; break;
+
+        case WindowType::CALCINPUTLINE: nRole = accessibility::AccessibleRole::TEXT; break;
+
+        case WindowType::PATTERNBOX:
+        case WindowType::NUMERICBOX:
+        case WindowType::METRICBOX:
+        case WindowType::CURRENCYBOX:
+        case WindowType::LONGCURRENCYBOX:
+        case WindowType::COMBOBOX: nRole = accessibility::AccessibleRole::COMBO_BOX; break;
+
+        case WindowType::LISTBOX:
+        case WindowType::MULTILISTBOX: nRole = accessibility::AccessibleRole::LIST; break;
+
+        case WindowType::TREELISTBOX: nRole = accessibility::AccessibleRole::TREE; break;
+
+        case WindowType::FIXEDTEXT: nRole = accessibility::AccessibleRole::LABEL; break;
+        case WindowType::FIXEDLINE:
+            if( !GetText().isEmpty() )
+                nRole = accessibility::AccessibleRole::LABEL;
+            else
+                nRole = accessibility::AccessibleRole::SEPARATOR;
+            break;
+
+        case WindowType::FIXEDBITMAP:
+        case WindowType::FIXEDIMAGE: nRole = accessibility::AccessibleRole::ICON; break;
+        case WindowType::GROUPBOX: nRole = accessibility::AccessibleRole::GROUP_BOX; break;
+        case WindowType::SCROLLBAR: nRole = accessibility::AccessibleRole::SCROLL_BAR; break;
+
+        case WindowType::SLIDER:
+        case WindowType::SPLITTER:
+        case WindowType::SPLITWINDOW: nRole = accessibility::AccessibleRole::SPLIT_PANE; break;
+
+        case WindowType::DATEBOX:
+        case WindowType::TIMEBOX:
+        case WindowType::DATEFIELD:
+        case WindowType::TIMEFIELD: nRole = accessibility::AccessibleRole::DATE_EDITOR; break;
+
+        case WindowType::NUMERICFIELD:
+        case WindowType::METRICFIELD:
+        case WindowType::CURRENCYFIELD:
+        case WindowType::LONGCURRENCYFIELD:
+        case WindowType::SPINFIELD:
+        case WindowType::FORMATTEDFIELD: nRole = accessibility::AccessibleRole::SPIN_BOX; break;
+
+        case WindowType::TOOLBOX: nRole = accessibility::AccessibleRole::TOOL_BAR; break;
+        case WindowType::STATUSBAR: nRole = accessibility::AccessibleRole::STATUS_BAR; break;
+
+        case WindowType::TABPAGE: nRole = accessibility::AccessibleRole::PANEL; break;
+        case WindowType::TABCONTROL: nRole = accessibility::AccessibleRole::PAGE_TAB_LIST; break;
+
+        case WindowType::DOCKINGWINDOW: nRole = (mpWindowImpl->mbFrame) ? accessibility::AccessibleRole::FRAME :
+                                                                      accessibility::AccessibleRole::PANEL; break;
+
+        case WindowType::FLOATINGWINDOW: nRole = ( mpWindowImpl->mbFrame ||
+                                             (mpWindowImpl->mpBorderWindow && mpWindowImpl->mpBorderWindow->mpWindowImpl->mbFrame) ||
+                                             (GetStyle() & WB_OWNERDRAWDECORATION) ) ? accessibility::AccessibleRole::FRAME :
+                                                                                       accessibility::AccessibleRole::WINDOW; break;
+
+        case WindowType::WORKWINDOW: nRole = accessibility::AccessibleRole::ROOT_PANE; break;
+
+        case WindowType::SCROLLBARBOX: nRole = accessibility::AccessibleRole::FILLER; break;
+
+        case WindowType::HELPTEXTWINDOW: nRole = accessibility::AccessibleRole::TOOL_TIP; break;
+
+        case WindowType::RULER: nRole = accessibility::AccessibleRole::RULER; break;
+
+        case WindowType::SCROLLWINDOW: nRole = accessibility::AccessibleRole::SCROLL_PANE; break;
+
+        case WindowType::WINDOW:
+        case WindowType::CONTROL:
+        case WindowType::BORDERWINDOW:
+        case WindowType::SYSTEMCHILDWINDOW:
+        default:
+            if (ImplIsAccessibleNativeFrame() )
+                nRole = accessibility::AccessibleRole::FRAME;
+            else if( IsScrollable() )
+                nRole = accessibility::AccessibleRole::SCROLL_PANE;
+            else if( this->ImplGetWindow()->IsMenuFloatingWindow() )
+                nRole = accessibility::AccessibleRole::WINDOW;      // #106002#, contextmenus are windows (i.e. toplevel)
+            else
+                // #104051# WINDOW seems to be a bad default role, use LAYEREDPANE instead
+                // a WINDOW is interpreted as a top-level window, which is typically not the case
+                //nRole = accessibility::AccessibleRole::WINDOW;
+                nRole = accessibility::AccessibleRole::PANEL;
+    }
+    return nRole;
+}
+
+sal_uInt16 Window::GetAccessibleRole() const
+{
+    if (!mpWindowImpl)
+        return 0;
+
+    sal_uInt16 nRole = mpWindowImpl->mpAccessibleInfos ? mpWindowImpl->mpAccessibleInfos->nAccessibleRole : 0xFFFF;
+    if ( nRole == 0xFFFF )
+        nRole = getDefaultAccessibleRole();
+    return nRole;
+}
+
+void Window::SetAccessibleName( const OUString& rName )
+{
+    if ( !mpWindowImpl->mpAccessibleInfos )
+        mpWindowImpl->mpAccessibleInfos.reset( new ImplAccessibleInfos );
+
+    OUString oldName = GetAccessibleName();
+
+    mpWindowImpl->mpAccessibleInfos->pAccessibleName = rName;
+
+    CallEventListeners( VclEventId::WindowFrameTitleChanged, &oldName );
+}
+
+OUString Window::GetAccessibleName() const
+{
+    if (!mpWindowImpl)
+        return OUString();
+
+    if (mpWindowImpl->mpAccessibleInfos && mpWindowImpl->mpAccessibleInfos->pAccessibleName)
+        return *mpWindowImpl->mpAccessibleInfos->pAccessibleName;
+    return getDefaultAccessibleName();
+}
+
+OUString Window::getDefaultAccessibleName() const
+{
+    OUString aAccessibleName;
+    switch ( GetType() )
+    {
+        case WindowType::MULTILINEEDIT:
+        case WindowType::PATTERNFIELD:
+        case WindowType::NUMERICFIELD:
+        case WindowType::METRICFIELD:
+        case WindowType::CURRENCYFIELD:
+        case WindowType::LONGCURRENCYFIELD:
+        case WindowType::CALCINPUTLINE:
+        case WindowType::EDIT:
+
+        case WindowType::DATEBOX:
+        case WindowType::TIMEBOX:
+        case WindowType::CURRENCYBOX:
+        case WindowType::LONGCURRENCYBOX:
+        case WindowType::DATEFIELD:
+        case WindowType::TIMEFIELD:
+        case WindowType::SPINFIELD:
+        case WindowType::FORMATTEDFIELD:
+
+        case WindowType::COMBOBOX:
+        case WindowType::LISTBOX:
+        case WindowType::MULTILISTBOX:
+        case WindowType::TREELISTBOX:
+        case WindowType::METRICBOX:
+        {
+            vcl::Window *pLabel = GetAccessibleRelationLabeledBy();
+            if ( pLabel && pLabel != this )
+                aAccessibleName = pLabel->GetText();
+            if (aAccessibleName.isEmpty())
+                aAccessibleName = GetQuickHelpText();
+        }
+        break;
+
+        case WindowType::IMAGEBUTTON:
+        case WindowType::PUSHBUTTON:
+            aAccessibleName = GetText();
+            if (aAccessibleName.isEmpty())
+            {
+                aAccessibleName = GetQuickHelpText();
+                if (aAccessibleName.isEmpty())
+                    aAccessibleName = GetHelpText();
+            }
+        break;
+
+        case WindowType::TOOLBOX:
+            aAccessibleName = GetText();
+            break;
+
+        case WindowType::MOREBUTTON:
+            aAccessibleName = mpWindowImpl->maText;
+            break;
+
+        default:
+            aAccessibleName = GetText();
+            break;
+    }
+
+    return GetNonMnemonicString( aAccessibleName );
+}
+
+void Window::SetAccessibleDescription( const OUString& rDescription )
+{
+    if ( ! mpWindowImpl->mpAccessibleInfos )
+        mpWindowImpl->mpAccessibleInfos.reset( new ImplAccessibleInfos );
+
+    SAL_WARN_IF( mpWindowImpl->mpAccessibleInfos->pAccessibleDescription, "vcl", "AccessibleDescription already set!" );
+    mpWindowImpl->mpAccessibleInfos->pAccessibleDescription = rDescription;
+}
+
+OUString Window::GetAccessibleDescription() const
+{
+    if (!mpWindowImpl)
+        return OUString();
+
+    OUString aAccessibleDescription;
+    if ( mpWindowImpl->mpAccessibleInfos && mpWindowImpl->mpAccessibleInfos->pAccessibleDescription )
+    {
+        aAccessibleDescription = *mpWindowImpl->mpAccessibleInfos->pAccessibleDescription;
+    }
+    else
+    {
+        // Special code for help text windows. ZT asks the border window for the
+        // description so we have to forward this request to our inner window.
+        const vcl::Window* pWin = this->ImplGetWindow();
+        if ( pWin->GetType() == WindowType::HELPTEXTWINDOW )
+            aAccessibleDescription = pWin->GetHelpText();
+        else
+            aAccessibleDescription = GetHelpText();
+    }
+
+    return aAccessibleDescription;
+}
+
+void Window::SetAccessibleRelationLabeledBy( vcl::Window* pLabeledBy )
+{
+    if ( !mpWindowImpl->mpAccessibleInfos )
+        mpWindowImpl->mpAccessibleInfos.reset( new ImplAccessibleInfos );
+    mpWindowImpl->mpAccessibleInfos->pLabeledByWindow = pLabeledBy;
+}
+
+void Window::SetAccessibleRelationLabelFor( vcl::Window* pLabelFor )
+{
+    if ( !mpWindowImpl->mpAccessibleInfos )
+        mpWindowImpl->mpAccessibleInfos.reset( new ImplAccessibleInfos );
+    mpWindowImpl->mpAccessibleInfos->pLabelForWindow = pLabelFor;
+}
+
+void Window::SetAccessibleRelationMemberOf( vcl::Window* pMemberOfWin )
+{
+    if ( !mpWindowImpl->mpAccessibleInfos )
+        mpWindowImpl->mpAccessibleInfos.reset( new ImplAccessibleInfos );
+    mpWindowImpl->mpAccessibleInfos->pMemberOfWindow = pMemberOfWin;
+}
+
+vcl::Window* Window::GetAccessibleRelationMemberOf() const
+{
+    if (mpWindowImpl->mpAccessibleInfos && mpWindowImpl->mpAccessibleInfos->pMemberOfWindow)
+        return mpWindowImpl->mpAccessibleInfos->pMemberOfWindow;
+
+    if (!isContainerWindow(this) && !isContainerWindow(GetParent()))
+        return getLegacyNonLayoutAccessibleRelationMemberOf();
+
+    return nullptr;
+}
+
+vcl::Window* Window::getAccessibleRelationLabelFor() const
+{
+    if (mpWindowImpl->mpAccessibleInfos && mpWindowImpl->mpAccessibleInfos->pLabelForWindow)
+        return mpWindowImpl->mpAccessibleInfos->pLabelForWindow;
+
+    return nullptr;
+}
+
+vcl::Window* Window::GetAccessibleRelationLabelFor() const
+{
+    vcl::Window* pWindow = getAccessibleRelationLabelFor();
+
+    if (pWindow)
+        return pWindow;
+
+    if (!isContainerWindow(this) && !isContainerWindow(GetParent()))
+        return getLegacyNonLayoutAccessibleRelationLabelFor();
+
+    return nullptr;
+}
+
+vcl::Window* Window::GetAccessibleRelationLabeledBy() const
+{
+    if (mpWindowImpl->mpAccessibleInfos && mpWindowImpl->mpAccessibleInfos->pLabeledByWindow)
+        return mpWindowImpl->mpAccessibleInfos->pLabeledByWindow;
+
+    std::vector<VclPtr<FixedText> > aMnemonicLabels(list_mnemonic_labels());
+    if (!aMnemonicLabels.empty())
+    {
+        //if we have multiple labels, then prefer the first that is visible
+        for (auto const & rCandidate : aMnemonicLabels)
+        {
+            if (rCandidate->IsVisible())
+                return rCandidate;
+        }
+        return aMnemonicLabels[0];
+    }
+
+    if (!isContainerWindow(this) && !isContainerWindow(GetParent()))
+        return getLegacyNonLayoutAccessibleRelationLabeledBy();
+
+    return nullptr;
+}
+
+bool Window::IsAccessibilityEventsSuppressed( bool bTraverseParentPath )
+{
+    if( !bTraverseParentPath )
+        return mpWindowImpl->mbSuppressAccessibilityEvents;
+    else
+    {
+        vcl::Window *pParent = this;
+        while ( pParent && pParent->mpWindowImpl)
+        {
+            if( pParent->mpWindowImpl->mbSuppressAccessibilityEvents )
+                return true;
+            else
+                pParent = pParent->mpWindowImpl->mpParent; // do not use GetParent() to find borderwindows that are frames
+        }
+        return false;
+    }
+}
+
+void Window::SetAccessibilityEventsSuppressed(bool bSuppressed)
+{
+    mpWindowImpl->mbSuppressAccessibilityEvents = bSuppressed;
+}
+
+} /* namespace vcl */
+
+uno::Reference<accessibility::XAccessibleEditableText>
+FindFocusedEditableText(uno::Reference<accessibility::XAccessibleContext> const& xContext)
+{
+    if (!xContext.is())
+        return uno::Reference<accessibility::XAccessibleEditableText>();
+
+    uno::Reference<accessibility::XAccessibleStateSet> xState = xContext->getAccessibleStateSet();
+    if (xState.is())
+    {
+        if (xState->contains(accessibility::AccessibleStateType::FOCUSED))
+        {
+            uno::Reference<accessibility::XAccessibleEditableText> xText(xContext, uno::UNO_QUERY);
+            if (xText.is())
+                return xText;
+            if (xState->contains(accessibility::AccessibleStateType::MANAGES_DESCENDANTS))
+                return uno::Reference<accessibility::XAccessibleEditableText>();
+        }
+    }
+
+    bool bSafeToIterate = true;
+    sal_Int32 nCount = xContext->getAccessibleChildCount();
+    if (nCount < 0 || nCount > SAL_MAX_UINT16 /* slow enough for anyone */)
+        bSafeToIterate = false;
+    if (!bSafeToIterate)
+        return uno::Reference<accessibility::XAccessibleEditableText>();
+
+    for (sal_Int32 i = 0; i < xContext->getAccessibleChildCount(); ++i)
+    {
+        uno::Reference<accessibility::XAccessible> xChild = xContext->getAccessibleChild(i);
+        if (!xChild.is())
+            continue;
+        uno::Reference<accessibility::XAccessibleContext> xChildContext
+            = xChild->getAccessibleContext();
+        if (!xChildContext.is())
+            continue;
+        uno::Reference<accessibility::XAccessibleEditableText> xText
+            = FindFocusedEditableText(xChildContext);
+        if (xText.is())
+            return xText;
+    }
+    return uno::Reference<accessibility::XAccessibleEditableText>();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */