// SPDX-License-Identifier: LGPL-2.1-or-later

 /****************************************************************************
  *   Copyright (c) 2023 Boyer Pierre-louis <pierrelouis.boyer@gmail.com>    *
  *   Copyright (c) 2023 FreeCAD Project Association                         *
  *                                                                          *
  *   This file is part of FreeCAD.                                          *
  *                                                                          *
  *   FreeCAD is free software: you can redistribute it and/or modify it     *
  *   under the terms of the GNU Lesser General Public License as            *
  *   published by the Free Software Foundation, either version 2.1 of the   *
  *   License, or (at your option) any later version.                        *
  *                                                                          *
  *   FreeCAD is distributed in the hope that it will be useful, but         *
  *   WITHOUT ANY WARRANTY; without even the implied warranty of             *
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU       *
  *   Lesser General Public License for more details.                        *
  *                                                                          *
  *   You should have received a copy of the GNU Lesser General Public       *
  *   License along with FreeCAD. If not, see                                *
  *   <https://www.gnu.org/licenses/>.                                       *
  *                                                                          *
  ***************************************************************************/

#ifndef QLISTWIDGETDRAGBUGFIX_HPP
#define QLISTWIDGETDRAGBUGFIX_HPP

#include <QDragMoveEvent>
#include <QListWidget>

 /* Qt has a recent bug (2023, https://bugreports.qt.io/browse/QTBUG-100128)
 * where the items disappears in certain conditions when drag and dropping.
 * Here we prevent the situation where this happens.
 * 1 - If the item is dropped on the item below such that the item doesn't move (ie superior half of the below item)
 * 2 - The item is the last one and user drop it on the empty space below.
 * In both those cases the item widget was lost.
 * When Qt solve this bug, this class should not be required anymore.
  */
class ListWidgetDragBugFix : public QListWidget
{
    Q_OBJECT

public:
    explicit ListWidgetDragBugFix(QWidget *parent);
    ~ListWidgetDragBugFix() override;

protected:
    void dragMoveEvent(QDragMoveEvent *e) override;
};

#endif