qt-everywhere-src-5.14.1/qtbase/src/plugins/platforms/winrt/uiautomation/qwinrtuiaaccessibility.cpp

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#include <QtGui/qtguiglobal.h>
#if QT_CONFIG(accessibility)

#include "qwinrtuiaaccessibility.h"
#include "qwinrtuiamainprovider.h"

#include <QtGui/QAccessible>
#include <QtGui/QWindow>
#include <QtGui/QGuiApplication>
#include <QtGui/private/qguiapplication_p.h>
#include <QtCore/qt_windows.h>
#include <qpa/qplatformintegration.h>

QT_BEGIN_NAMESPACE

QWinRTUiaAccessibility::QWinRTUiaAccessibility()
{
}

QWinRTUiaAccessibility::~QWinRTUiaAccessibility()
{
}

// Handles UI Automation window messages.
void QWinRTUiaAccessibility::activate()
{
    // Start handling accessibility internally
    QGuiApplicationPrivate::platformIntegration()->accessibility()->setActive(true);
}

// Handles accessibility update notifications.
void QWinRTUiaAccessibility::notifyAccessibilityUpdate(QAccessibleEvent *event)
{
    if (!event)
        return;

    QAccessibleInterface *accessible = event->accessibleInterface();
    if (!isActive() || !accessible || !accessible->isValid())
        return;

    switch (event->type()) {
    case QAccessible::Focus:
        QWinRTUiaMainProvider::notifyFocusChange(event);
        break;
    case QAccessible::ObjectCreated:
    case QAccessible::ObjectDestroyed:
    case QAccessible::ObjectShow:
    case QAccessible::ObjectHide:
    case QAccessible::ObjectReorder:
        QWinRTUiaMainProvider::notifyVisibilityChange(event);
        break;
    case QAccessible::StateChanged:
        QWinRTUiaMainProvider::notifyStateChange(static_cast<QAccessibleStateChangeEvent *>(event));
        break;
    case QAccessible::ValueChanged:
        QWinRTUiaMainProvider::notifyValueChange(static_cast<QAccessibleValueChangeEvent *>(event));
        break;
    case QAccessible::TextAttributeChanged:
    case QAccessible::TextColumnChanged:
    case QAccessible::TextInserted:
    case QAccessible::TextRemoved:
    case QAccessible::TextUpdated:
    case QAccessible::TextSelectionChanged:
    case QAccessible::TextCaretMoved:
        QWinRTUiaMainProvider::notifyTextChange(event);
        break;
    default:
        break;
    }
}

QT_END_NAMESPACE

#endif // QT_CONFIG(accessibility)