/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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
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**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_WIDGET_H
#define RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_WIDGET_H

#include "render_widget_host_view_qt_delegate.h"
#include "web_contents_adapter_client.h"

#include <QSGAbstractRenderer>
#include <QSGEngine>
#include <QSGNode>

#if (QT_VERSION < QT_VERSION_CHECK(5, 4, 0))
#include <QtWidgets/private/qopenglwidget_p.h>
#else
#include <QtWidgets/QOpenGLWidget>
#endif

class RenderWidgetHostViewQtDelegateWidget : public QOpenGLWidget, public RenderWidgetHostViewQtDelegate {
    Q_OBJECT
public:
    RenderWidgetHostViewQtDelegateWidget(RenderWidgetHostViewQtDelegateClient *client, QWidget *parent = 0);

    virtual void initAsChild(WebContentsAdapterClient* container) Q_DECL_OVERRIDE;
    virtual void initAsPopup(const QRect&) Q_DECL_OVERRIDE;
    virtual QRectF screenRect() const Q_DECL_OVERRIDE;
    virtual QRectF contentsRect() const Q_DECL_OVERRIDE;
    virtual void setKeyboardFocus() Q_DECL_OVERRIDE;
    virtual bool hasKeyboardFocus() Q_DECL_OVERRIDE;
    virtual void show() Q_DECL_OVERRIDE;
    virtual void hide() Q_DECL_OVERRIDE;
    virtual bool isVisible() const Q_DECL_OVERRIDE;
    virtual QWindow* window() const Q_DECL_OVERRIDE;
    virtual void update() Q_DECL_OVERRIDE;
    virtual void updateCursor(const QCursor &) Q_DECL_OVERRIDE;
    virtual void resize(int width, int height) Q_DECL_OVERRIDE;
    virtual void move(const QPoint &screenPos) Q_DECL_OVERRIDE;
    virtual void inputMethodStateChanged(bool editorVisible) Q_DECL_OVERRIDE;
    virtual void setTooltip(const QString &tooltip) Q_DECL_OVERRIDE;

protected:
    bool event(QEvent *event) Q_DECL_OVERRIDE;
    void resizeEvent(QResizeEvent *resizeEvent) Q_DECL_OVERRIDE;
    void showEvent(QShowEvent *) Q_DECL_OVERRIDE;
    void initializeGL() Q_DECL_OVERRIDE;
    void paintGL() Q_DECL_OVERRIDE;

    QVariant inputMethodQuery(Qt::InputMethodQuery query) const;

private slots:
    void onWindowPosChanged();

private:
    RenderWidgetHostViewQtDelegateClient *m_client;
    // Put the root node first to make sure it gets destroyed after the SG renderer.
    QScopedPointer<QSGRootNode> m_rootNode;
    QScopedPointer<QSGEngine> m_sgEngine;
    QScopedPointer<QSGAbstractRenderer> m_sgRenderer;
    bool m_isPopup;
    QList<QMetaObject::Connection> m_windowConnections;
};

#endif