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/*
Copyright (c) 2018 Michael Bohlender <michael.bohlender@kdemail.net>
Copyright (c) 2018 Christian Mollekopf <mollekopf@kolabsys.com>
Copyright (c) 2018 Rémi Nicole <minijackson@riseup.net>
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This library 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#pragma once
#include <sink/applicationdomaintype.h>
#include <QAbstractItemModel>
#include <QList>
#include <QMutex>
#include <QSharedPointer>
#include <QVector>
// Implementation notes
// ====================
//
// On the model side
// -----------------
//
// Columns are never used.
//
// Top-level items just contains the ".events" attribute, and their rows
// correspond to their day of week. In that case the internalId contains
// DAY_ID.
//
// Direct children are events, and their rows corresponds to their index in
// their partition. In that case no internalId / internalPointer is used.
//
// Internally:
// -----------
//
// On construction and on dataChanged, all events are processed and partitioned
// in partitionedEvents:
//
// QVector< QList<QSharedPointer<Event> >
// ~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
// | |
// | '--- List of event pointers for that day
// '--- Partition / day
//
class EventTreeModel : public QAbstractItemModel
{
Q_OBJECT
public:
using Event = Sink::ApplicationDomain::Event;
enum Roles
{
Events = Qt::UserRole + 1,
Summary,
Description,
StartTime,
Duration,
};
Q_ENUM(Roles);
EventTreeModel(QObject *parent = nullptr);
~EventTreeModel() = default;
QModelIndex index(int row, int column, const QModelIndex &parent = {}) const override;
QModelIndex parent(const QModelIndex &index) const override;
int rowCount(const QModelIndex &parent) const override;
int columnCount(const QModelIndex &parent) const override;
//bool hasChildren(const QModelIndex &parent) const override;
QVariant data(const QModelIndex &index, int role) const override;
QHash<int, QByteArray> roleNames() const override;
private:
void partitionData();
QSharedPointer<QAbstractItemModel> eventModel;
QVector<QList<QSharedPointer<Event>>> partitionedEvents;
QMutex partitioningMutex;
static const constexpr quintptr DAY_ID = 7;
};
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