File indexing completed on 2024-04-14 03:43:26

 /*
     SPDX-FileCopyrightText: 2012 Akarsh Simha <akarsh.simha@kdemail.net>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include <QSortFilterProxyModel>
 
 class QModelIndex;
 
 /**
  * @class SessionSortFilterProxyModel
  * @short Sort best observation times by reimplementing lessThan() to work on the transit times of objects
  *
  * Any observing session starts at about sunset (~ 6 PM local time)
  * and goes on till sunrise (~ 6 AM local time). Thus, the correct
  * order to view objects in is to view those with meridian transit
  * times just after 12 noon local time first, working towards those
  * that transit in the evening, and finishing the ones that have
  * meridian transits just before 12 noon at the end of the
  * session. So, the observing session list should be sorted in a
  * special manner when sorting by time.  This class reimplements
  * lessThan() in QSortFilterProxyModel to obtain the required sorting.
  */
 class SessionSortFilterProxyModel : public QSortFilterProxyModel
 {
     Q_OBJECT;
 
   public:
     explicit SessionSortFilterProxyModel(QObject *parent = nullptr);
 
   protected:
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
 };