Create a RWHV delegate in core

This is adapting the Quick code for shared use with widgets,
and allows us to use it from QWebEnginePage.

Pick-to: 6.4
Fixes: QTBUG-96377
Change-Id: I3f09c1a949eff86d80fbe6c513dc66e3f9f2f611
Reviewed-by: Michal Klocek <michal.klocek@qt.io>

1 files changed, 186 insertions, 0 deletions

diff --git a/src/webenginequick/qquickwebengine_accessible.cpp b/src/webenginequick/qquickwebengine_accessible.cpp
new file mode 100644
index 000000000..8d9f2bd63
--- /dev/null
+++ b/src/webenginequick/qquickwebengine_accessible.cpp
@@ -0,0 +1,186 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWebEngine module 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 "qquickwebengine_accessible.h"
+
+#include <QQuickItem>
+#include <QQuickWindow>
+
+#include "api/qquickwebengineview_p.h"
+#include "api/qquickwebengineview_p_p.h"
+#include "web_contents_adapter.h"
+
+
+#if QT_CONFIG(accessibility)
+QT_BEGIN_NAMESPACE
+QQuickWebEngineViewAccessible::QQuickWebEngineViewAccessible(QQuickWebEngineView *o)
+    : QAccessibleObject(o)
+{}
+
+bool QQuickWebEngineViewAccessible::isValid() const
+{
+    if (!QAccessibleObject::isValid())
+        return false;
+
+    if (!engineView() || !engineView()->d_func())
+        return false;
+
+    return true;
+}
+
+QAccessibleInterface *QQuickWebEngineViewAccessible::parent() const
+{
+    QQuickItem *parent = engineView()->parentItem();
+    QAccessibleInterface *iface = QAccessible::queryAccessibleInterface(parent);
+    if (!iface)
+        return QAccessible::queryAccessibleInterface(engineView()->window());
+    return iface;
+}
+
+QAccessibleInterface *QQuickWebEngineViewAccessible::focusChild() const
+{
+    if (child(0) && child(0)->focusChild())
+        return child(0)->focusChild();
+    return const_cast<QQuickWebEngineViewAccessible *>(this);
+}
+
+int QQuickWebEngineViewAccessible::childCount() const
+{
+    return child(0) ? 1 : 0;
+}
+
+QAccessibleInterface *QQuickWebEngineViewAccessible::child(int index) const
+{
+    if (index == 0 && isValid())
+        return engineView()->d_func()->adapter->browserAccessible();
+    return nullptr;
+}
+
+int QQuickWebEngineViewAccessible::indexOfChild(const QAccessibleInterface *c) const
+{
+    if (child(0) && c == child(0))
+        return 0;
+    return -1;
+}
+
+QString QQuickWebEngineViewAccessible::text(QAccessible::Text) const
+{
+    return QString();
+}
+
+QAccessible::Role QQuickWebEngineViewAccessible::role() const
+{
+    return QAccessible::Client;
+}
+
+QAccessible::State QQuickWebEngineViewAccessible::state() const
+{
+    QAccessible::State s;
+    return s;
+}
+
+QQuickWebEngineView *QQuickWebEngineViewAccessible::engineView() const
+{
+    return static_cast<QQuickWebEngineView*>(object());
+}
+
+QT_END_NAMESPACE
+
+namespace QtWebEngineCore {
+
+RenderWidgetHostViewQtDelegateQuickAccessible::RenderWidgetHostViewQtDelegateQuickAccessible(QObject *o, QQuickWebEngineView *view)
+    : QAccessibleObject(o)
+    , m_view(view)
+{
+}
+
+bool RenderWidgetHostViewQtDelegateQuickAccessible::isValid() const
+{
+    if (!viewAccessible() || !viewAccessible()->isValid())
+        return false;
+
+    return QAccessibleObject::isValid();
+}
+
+QAccessibleInterface *RenderWidgetHostViewQtDelegateQuickAccessible::parent() const
+{
+    return viewAccessible()->parent();
+}
+
+QString RenderWidgetHostViewQtDelegateQuickAccessible::text(QAccessible::Text) const
+{
+    return QString();
+}
+
+QAccessible::Role RenderWidgetHostViewQtDelegateQuickAccessible::role() const
+{
+    return QAccessible::Client;
+}
+
+QAccessible::State RenderWidgetHostViewQtDelegateQuickAccessible::state() const
+{
+    return viewAccessible()->state();
+}
+
+QAccessibleInterface *RenderWidgetHostViewQtDelegateQuickAccessible::focusChild() const
+{
+    return viewAccessible()->focusChild();
+}
+
+int RenderWidgetHostViewQtDelegateQuickAccessible::childCount() const
+{
+    return viewAccessible()->childCount();
+}
+
+QAccessibleInterface *RenderWidgetHostViewQtDelegateQuickAccessible::child(int index) const
+{
+    return viewAccessible()->child(index);
+}
+
+int RenderWidgetHostViewQtDelegateQuickAccessible::indexOfChild(const QAccessibleInterface *c) const
+{
+    return viewAccessible()->indexOfChild(c);
+}
+
+QQuickWebEngineViewAccessible *RenderWidgetHostViewQtDelegateQuickAccessible::viewAccessible() const
+{
+    return static_cast<QQuickWebEngineViewAccessible *>(QAccessible::queryAccessibleInterface(m_view));
+}
+} // namespace QtWebEngineCore
+#endif // QT_CONFIG(accessibility)