1 files changed, 140 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiaaccessibility.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiaaccessibility.cpp
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index 0000000000..907883bf5b
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+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiaaccessibility.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QtConfig>
+#ifndef QT_NO_ACCESSIBILITY
+
+#include "qwindowsuiaaccessibility.h"
+#include "qwindowsuiamainprovider.h"
+#include "qwindowsuiautils.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>
+#include <QtWindowsUIAutomationSupport/private/qwindowsuiawrapper_p.h>
+
+QT_BEGIN_NAMESPACE
+
+using namespace QWindowsUiAutomation;
+
+
+QWindowsUiaAccessibility::QWindowsUiaAccessibility()
+{
+}
+
+QWindowsUiaAccessibility::~QWindowsUiaAccessibility()
+{
+}
+
+// Handles UI Automation window messages.
+bool QWindowsUiaAccessibility::handleWmGetObject(HWND hwnd, WPARAM wParam, LPARAM lParam, LRESULT *lResult)
+{
+    if (lParam == LPARAM(UiaRootObjectId)) {
+
+        // Start handling accessibility internally
+        QGuiApplicationPrivate::platformIntegration()->accessibility()->setActive(true);
+
+        // Ignoring all requests while starting up / shutting down
+        if (QCoreApplication::startingUp() || QCoreApplication::closingDown())
+            return false;
+
+        if (QWindow *window = QWindowsContext::instance()->findWindow(hwnd)) {
+            if (QAccessibleInterface *accessible = window->accessibleRoot()) {
+                QWindowsUiaMainProvider *provider = QWindowsUiaMainProvider::providerForAccessible(accessible);
+                *lResult = QWindowsUiaWrapper::instance()->returnRawElementProvider(hwnd, wParam, lParam, provider);
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+// Handles accessibility update notifications.
+void QWindowsUiaAccessibility::notifyAccessibilityUpdate(QAccessibleEvent *event)
+{
+    if (!event)
+        return;
+
+    QAccessibleInterface *accessible = event->accessibleInterface();
+    if (!isActive() || !accessible || !accessible->isValid())
+        return;
+
+    // Ensures QWindowsUiaWrapper is properly initialized.
+    if (!QWindowsUiaWrapper::instance()->ready())
+        return;
+
+    // No need to do anything when nobody is listening.
+    if (!QWindowsUiaWrapper::instance()->clientsAreListening())
+        return;
+
+    switch (event->type()) {
+
+    case QAccessible::Focus:
+        QWindowsUiaMainProvider::notifyFocusChange(event);
+        break;
+
+    case QAccessible::StateChanged:
+        QWindowsUiaMainProvider::notifyStateChange(static_cast<QAccessibleStateChangeEvent *>(event));
+        break;
+
+    case QAccessible::ValueChanged:
+        QWindowsUiaMainProvider::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:
+        QWindowsUiaMainProvider::notifyTextChange(event);
+        break;
+
+    default:
+        break;
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_ACCESSIBILITY