qwindowsuiaexpandcollapseprovider.cpp

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include <QtGui/qtguiglobal.h>
#if QT_CONFIG(accessibility)
 
#include "qwindowsuiaexpandcollapseprovider.h"
#include "qwindowsuiautils.h"
#include "qwindowscontext.h"
 
#include <QtGui/qaccessible.h>
#include <QtCore/qloggingcategory.h>
#include <QtCore/qstring.h>
 
QT_BEGIN_NAMESPACE
 
using namespace QWindowsUiAutomation;
 
static bool isExpanded(QAccessibleInterface *accessible)
{
    Q_ASSERT(accessible);
    if (accessible->role() == QAccessible::MenuItem)
        return accessible->childCount() > 0 && !accessible->child(0)->state().invisible;
    else
        return accessible->state().expandable && accessible->state().expanded;
}
 
QWindowsUiaExpandCollapseProvider::QWindowsUiaExpandCollapseProvider(QAccessible::Id id) :
    QWindowsUiaBaseProvider(id)
{
}
 
QWindowsUiaExpandCollapseProvider::~QWindowsUiaExpandCollapseProvider() = default;
 
HRESULT STDMETHODCALLTYPE QWindowsUiaExpandCollapseProvider::Expand()
{
    qCDebug(lcQpaUiAutomation) << __FUNCTION__;
 
    QAccessibleInterface *accessible = accessibleInterface();
    if (!accessible)
        return UIA_E_ELEMENTNOTAVAILABLE;
 
    QAccessibleActionInterface *actionInterface = accessible->actionInterface();
    if (!actionInterface)
        return UIA_E_ELEMENTNOTAVAILABLE;
 
    if (!isExpanded(accessible))
        actionInterface->doAction(QAccessibleActionInterface::showMenuAction());
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE QWindowsUiaExpandCollapseProvider::Collapse()
{
    qCDebug(lcQpaUiAutomation) << __FUNCTION__;
 
    QAccessibleInterface *accessible = accessibleInterface();
    if (!accessible)
        return UIA_E_ELEMENTNOTAVAILABLE;
 
    QAccessibleActionInterface *actionInterface = accessible->actionInterface();
    if (!actionInterface)
        return UIA_E_ELEMENTNOTAVAILABLE;
 
    if (isExpanded(accessible))
        actionInterface->doAction(QAccessibleActionInterface::showMenuAction());
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE QWindowsUiaExpandCollapseProvider::get_ExpandCollapseState(__RPC__out ExpandCollapseState *pRetVal)
{
    qCDebug(lcQpaUiAutomation) << __FUNCTION__;
 
    if (!pRetVal)
        return E_INVALIDARG;
    *pRetVal = ExpandCollapseState_LeafNode;
 
    QAccessibleInterface *accessible = accessibleInterface();
    if (!accessible)
        return UIA_E_ELEMENTNOTAVAILABLE;
 
    *pRetVal = isExpanded(accessible) ? ExpandCollapseState_Expanded : ExpandCollapseState_Collapsed;
 
    return S_OK;
}
 
QT_END_NAMESPACE
 
#endif // QT_CONFIG(accessibility)