/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qquickshortcutcontext_p_p.h"
#include "qquickoverlay_p_p.h"
#include "qquickpopup_p.h"

#include <QtGui/qguiapplication.h>

QT_BEGIN_NAMESPACE

static bool isBlockedByPopup(QQuickItem *item)
{
    if (!item || !item->window())
        return false;

    QQuickOverlay *overlay = QQuickOverlay::overlay(item->window());
    const auto popups = QQuickOverlayPrivate::get(overlay)->stackingOrderPopups();
    for (QQuickPopup *popup : popups) {
        if (popup->isModal() || popup->closePolicy() & QQuickPopup::CloseOnEscape)
            return item != popup->popupItem() && !popup->popupItem()->isAncestorOf(item);
    }

    return false;
}

bool QQuickShortcutContext::matcher(QObject *obj, Qt::ShortcutContext context)
{
    QQuickItem *item = nullptr;
    switch (context) {
    case Qt::ApplicationShortcut:
        return true;
    case Qt::WindowShortcut:
        while (obj && !obj->isWindowType()) {
            obj = obj->parent();
            item = qobject_cast<QQuickItem *>(obj);
            if (item) {
                obj = item->window();
            } else if (QQuickPopup *popup = qobject_cast<QQuickPopup *>(obj)) {
                obj = popup->window();
                item = popup->popupItem();
            }
        }
        return obj && obj == QGuiApplication::focusWindow() && !isBlockedByPopup(item);
    default:
        return false;
    }
}

QT_END_NAMESPACE
