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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 <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <vcl/toolbox.hxx>
#include <vcl/menu.hxx>
#include <osx/a11yfocustracker.hxx>
#include "documentfocuslistener.hxx"
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include <com/sun/star/accessibility/XAccessibleSelection.hpp>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
using namespace ::com::sun::star::accessibility;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::uno;
AquaA11yFocusTracker& TheAquaA11yFocusTracker()
{
static AquaA11yFocusTracker SINGLETON;
return SINGLETON;
}
static vcl::Window *
getWindow(const ::VclSimpleEvent *pEvent)
{
return static_cast< const ::VclWindowEvent *> (pEvent)->GetWindow();
}
// callback function for Application::addEventListener
void AquaA11yFocusTracker::WindowEventHandler(void * pThis, VclSimpleEvent& rEvent)
{
AquaA11yFocusTracker *pFocusTracker = static_cast<AquaA11yFocusTracker *>(
pThis);
switch (rEvent.GetId())
{
case VclEventId::WindowPaint:
pFocusTracker-> toolbox_open_floater( getWindow(&rEvent) );
break;
case VclEventId::WindowGetFocus:
pFocusTracker->window_got_focus( getWindow(&rEvent) );
break;
case VclEventId::ObjectDying:
pFocusTracker->m_aDocumentWindowList.erase( getWindow(&rEvent) );
[[fallthrough]];
case VclEventId::ToolboxHighlightOff:
pFocusTracker->toolbox_highlight_off( getWindow(&rEvent) );
break;
case VclEventId::ToolboxHighlight:
pFocusTracker->toolbox_highlight_on( getWindow(&rEvent) );
break;
case VclEventId::TabpageActivate:
pFocusTracker->tabpage_activated( getWindow(&rEvent) );
break;
case VclEventId::MenuHighlight:
// Inspired by code in WindowEventHandler in
// vcl/unx/gtk/a11y/atkutil.cxx, find out what kind of event
// it is to avoid blindly using a static_cast and crash,
// fdo#47275.
if( const VclMenuEvent* pMenuEvent = dynamic_cast < const VclMenuEvent* > (&rEvent) )
{
pFocusTracker->menu_highlighted( pMenuEvent );
}
break;
default:
break;
}
}
AquaA11yFocusTracker::AquaA11yFocusTracker() :
m_aWindowEventLink(this, WindowEventHandler),
m_xDocumentFocusListener(new DocumentFocusListener(*this))
{
Application::AddEventListener(m_aWindowEventLink);
window_got_focus(Application::GetFocusWindow());
}
AquaA11yFocusTracker::~AquaA11yFocusTracker() {}
void AquaA11yFocusTracker::setFocusedObject(const Reference< XAccessible >& xAccessible)
{
if( xAccessible != m_xFocusedObject )
{
m_xFocusedObject = xAccessible;
if( m_aFocusListener.is() )
m_aFocusListener->focusedObjectChanged(xAccessible);
}
}
void AquaA11yFocusTracker::notify_toolbox_item_focus(ToolBox *pToolBox)
{
Reference< XAccessible > xAccessible( pToolBox->GetAccessible() );
if( xAccessible.is() )
{
Reference< XAccessibleContext > xContext(xAccessible->getAccessibleContext());
if( xContext.is() )
{
try {
ToolBox::ImplToolItems::size_type nPos = pToolBox->GetItemPos( pToolBox->GetHighlightItemId() );
if( nPos != ToolBox::ITEM_NOTFOUND )
setFocusedObject( xContext->getAccessibleChild( nPos ) );
//TODO: ToolBox::ImplToolItems::size_type -> sal_Int32!
}
catch (const IndexOutOfBoundsException&)
{
SAL_WARN("vcl", "Accessible object has invalid index in parent");
}
}
}
}
void AquaA11yFocusTracker::toolbox_open_floater(vcl::Window *pWindow)
{
bool bToolboxFound = false;
bool bFloatingWindowFound = false;
vcl::Window * pFloatingWindow = nullptr;
while ( pWindow != nullptr ) {
if ( pWindow->GetType() == WindowType::TOOLBOX ) {
bToolboxFound = true;
} else if ( pWindow->GetType() == WindowType::FLOATINGWINDOW ) {
bFloatingWindowFound = true;
pFloatingWindow = pWindow;
}
pWindow = pWindow->GetParent();
}
if ( bToolboxFound && bFloatingWindowFound ) {
Reference < XAccessible > rxAccessible = pFloatingWindow -> GetAccessible();
if ( ! rxAccessible.is() ) {
return;
}
Reference < XAccessibleContext > rxContext = rxAccessible -> getAccessibleContext();
if ( ! rxContext.is() ) {
return;
}
if ( rxContext -> getAccessibleChildCount() > 0 ) {
try {
Reference < XAccessible > rxAccessibleChild = rxContext -> getAccessibleChild( 0 );
if ( ! rxAccessibleChild.is() ) {
return;
}
setFocusedObject ( rxAccessibleChild );
}
catch (const IndexOutOfBoundsException&)
{
SAL_WARN("vcl", "No valid accessible objects in parent");
}
}
}
}
void AquaA11yFocusTracker::toolbox_highlight_on(vcl::Window *pWindow)
{
// Make sure either the toolbox or its parent toolbox has the focus
if ( ! pWindow->HasFocus() )
{
ToolBox* pToolBoxParent = dynamic_cast< ToolBox * >( pWindow->GetParent() );
if ( ! pToolBoxParent || ! pToolBoxParent->HasFocus() )
return;
}
notify_toolbox_item_focus(static_cast <ToolBox *> (pWindow));
}
void AquaA11yFocusTracker::toolbox_highlight_off(vcl::Window const *pWindow)
{
ToolBox* pToolBoxParent = dynamic_cast< ToolBox * >( pWindow->GetParent() );
// Notify when leaving sub toolboxes
if( pToolBoxParent && pToolBoxParent->HasFocus() )
notify_toolbox_item_focus( pToolBoxParent );
}
void AquaA11yFocusTracker::tabpage_activated(vcl::Window *pWindow)
{
Reference< XAccessible > xAccessible( pWindow->GetAccessible() );
if( xAccessible.is() )
{
Reference< XAccessibleSelection > xSelection(xAccessible->getAccessibleContext(), UNO_QUERY);
if( xSelection.is() )
setFocusedObject( xSelection->getSelectedAccessibleChild(0) );
}
}
void AquaA11yFocusTracker::menu_highlighted(const VclMenuEvent *pEvent)
{
Menu * pMenu = pEvent->GetMenu();
if( pMenu )
{
Reference< XAccessible > xAccessible( pMenu->GetAccessible() );
if( xAccessible.is() )
setFocusedObject( xAccessible );
}
}
void AquaA11yFocusTracker::window_got_focus(vcl::Window *pWindow)
{
// The menu bar is handled through VclEventId::MenuHighlightED
if( ! pWindow || !pWindow->IsReallyVisible() || pWindow->GetType() == WindowType::MENUBARWINDOW )
return;
// ToolBoxes are handled through VclEventId::ToolboxHighlight
if( pWindow->GetType() == WindowType::TOOLBOX )
return;
if( pWindow->GetType() == WindowType::TABCONTROL )
{
tabpage_activated( pWindow );
return;
}
Reference< XAccessible > xAccessible(pWindow->GetAccessible());
if( ! xAccessible.is() )
return;
Reference< XAccessibleContext > xContext = xAccessible->getAccessibleContext();
if( ! xContext.is() )
return;
sal_Int64 nStateSet = xContext->getAccessibleStateSet();
if( ! nStateSet )
return;
/* the UNO ToolBox wrapper does not (yet?) support XAccessibleSelection, so we
* need to add listeners to the children instead of re-using the tabpage stuff
*/
if( (nStateSet & AccessibleStateType::FOCUSED) && (pWindow->GetType() != WindowType::TREELISTBOX) )
{
setFocusedObject( xAccessible );
}
else
{
if( m_aDocumentWindowList.insert(pWindow).second )
m_xDocumentFocusListener->attachRecursive(xAccessible, xContext, nStateSet);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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