/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
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** This file is part of the plugins of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
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** file. Please review the following information to ensure the GNU General
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** Alternatively, this file may be used in accordance with the terms and
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QXCBCLIPBOARD_H
#define QXCBCLIPBOARD_H

#include <QPlatformClipboard>
#include <qxcbobject.h>
#include <xcb/xcb.h>
#include <xcb/xfixes.h>

QT_BEGIN_NAMESPACE

class QXcbConnection;
class QXcbScreen;
class QXcbClipboardMime;

class QXcbClipboard : public QXcbObject, public QPlatformClipboard
{
public:
    QXcbClipboard(QXcbConnection *connection);
    ~QXcbClipboard();

    QMimeData *mimeData(QClipboard::Mode mode);
    void setMimeData(QMimeData *data, QClipboard::Mode mode);

    bool supportsMode(QClipboard::Mode mode) const;
    bool ownsMode(QClipboard::Mode mode) const;

    QXcbScreen *screen() const { return m_screen; }

    xcb_window_t requestor() const;
    void setRequestor(xcb_window_t window);

    xcb_window_t owner() const;

    void handleSelectionRequest(xcb_selection_request_event_t *event);
    void handleSelectionClearRequest(xcb_selection_clear_event_t *event);
    void handleXFixesSelectionRequest(xcb_xfixes_selection_notify_event_t *event);

    bool clipboardReadProperty(xcb_window_t win, xcb_atom_t property, bool deleteProperty, QByteArray *buffer, int *size, xcb_atom_t *type, int *format) const;
    QByteArray clipboardReadIncrementalProperty(xcb_window_t win, xcb_atom_t property, int nbytes, bool nullterm);

    QByteArray getDataInFormat(xcb_atom_t modeAtom, xcb_atom_t fmtatom);

    xcb_window_t getSelectionOwner(xcb_atom_t atom) const;
    QByteArray getSelection(xcb_atom_t selection, xcb_atom_t target, xcb_atom_t property);

private:
    xcb_generic_event_t *waitForClipboardEvent(xcb_window_t win, int type, int timeout, bool checkManager = false);

    xcb_atom_t sendTargetsSelection(QMimeData *d, xcb_window_t window, xcb_atom_t property);
    xcb_atom_t sendSelection(QMimeData *d, xcb_atom_t target, xcb_window_t window, xcb_atom_t property);

    xcb_atom_t atomForMode(QClipboard::Mode mode) const;
    QClipboard::Mode modeForAtom(xcb_atom_t atom) const;

    QXcbScreen *m_screen;

    // Selection and Clipboard
    QXcbClipboardMime *m_xClipboard[2];
    QMimeData *m_clientClipboard[2];
    xcb_timestamp_t m_timestamp[2];

    xcb_window_t m_requestor;
    xcb_window_t m_owner;

    static const int clipboard_timeout;

};

QT_END_NAMESPACE

#endif // QXCBCLIPBOARD_H