1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2014-06-09
 * Description : A model to list the tracks
 *
 * SPDX-FileCopyrightText: 2014-2025 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * SPDX-FileCopyrightText: 2014      by Michael G. Hansen <mike at mghansen dot de>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * ============================================================ */

#include "track_listmodel.h"

// KDE includes

#include <klocalizedstring.h>

// Local includes


namespace Digikam
{

enum TrackColumns
{
    ColumnVisible  = 0,
    ColumnNPoints  = 1,
    ColumnFilename = 2,
    ColumnCount    = 3
};

class Q_DECL_HIDDEN TrackListModel::Private
{
public:

    Private() = default;

    TrackManager* trackManager = nullptr;
};

TrackListModel::TrackListModel(TrackManager* const trackManager, QObject* const parent)
    : QAbstractItemModel(parent),
      d                 (new Private)
{
    d->trackManager = trackManager;

    connect(d->trackManager, SIGNAL(signalAllTrackFilesReady()),
            this, SLOT(slotTrackManagerUpdated()));
}

TrackListModel::~TrackListModel()
{
}

int TrackListModel::columnCount(const QModelIndex& parent) const
{
    Q_UNUSED(parent);

    return ColumnCount;
}

bool TrackListModel::setData(const QModelIndex& index, const QVariant& value, int role)
{
    Q_UNUSED(index);
    Q_UNUSED(value);
    Q_UNUSED(role);

    return false;
}

QVariant TrackListModel::data(const QModelIndex& index, int role) const
{
    if (index.isValid())
    {
        Q_ASSERT(index.model() == this);
    }

    const int rowNumber    = index.row();
    const int columnNumber = index.column();

    if (
        (columnNumber < 0) || (columnNumber >= ColumnCount) ||
        (rowNumber < 0)    || (rowNumber >= d->trackManager->trackCount())
       )
    {
        return QVariant();
    }

    TrackManager::Track track = d->trackManager->getTrackById(index.internalId());

    if (track.id == 0)
    {
        // track not found, invalid id

        return QVariant();
    }

    switch (role)
    {
        case Qt::DisplayRole:
        {
            switch (columnNumber)
            {
                case ColumnFilename:
                {
                    return track.url.fileName();
                }

                case ColumnNPoints:
                {
                    return QString::number(track.points.count());
                }

                case ColumnVisible:
                {
                    return QString();
                }
            }

            break;
        }

        case Qt::BackgroundRole:
        case Qt::DecorationRole:
        {
            switch (columnNumber)
            {
                case ColumnVisible:
                {
                    return track.color;
                }
            }

            break;
        }
    }

    return QVariant();
}

QModelIndex TrackListModel::index(int row, int column, const QModelIndex& parent) const
{
    if (parent.isValid())
    {
        Q_ASSERT(parent.model() == this);

        return QModelIndex();
    }

    if (
        (column < 0) || (column >= ColumnCount) ||
        (row < 0)    || (row >= d->trackManager->trackCount())
       )
    {
        return QModelIndex();
    }

    const TrackManager::Track track = d->trackManager->getTrack(row);

    /// @todo We have to use quint32 for track ids

    return createIndex(row, column, quint32(track.id));
}

QModelIndex TrackListModel::parent(const QModelIndex& index) const
{
    if (index.isValid())
    {
        Q_ASSERT(index.model()==this);
    }

    // we have only top level items

    return QModelIndex();
}

int TrackListModel::rowCount(const QModelIndex& parent) const
{
    if (parent.isValid())
    {
        Q_ASSERT(parent.model() == this);

        return 0;
    }

    return d->trackManager->trackCount();
}

bool TrackListModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant& value, int role)
{
    Q_UNUSED(section);
    Q_UNUSED(orientation);
    Q_UNUSED(value);
    Q_UNUSED(role);

    return false;
}

QVariant TrackListModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if ((section >= ColumnCount) || (orientation != Qt::Horizontal) )
    {
        return false;
    }

    if (role != Qt::DisplayRole)
    {
        return QAbstractItemModel::headerData(section, orientation, role);
    }

    /// @todo Make color and #points sections more narrow
    /// @todo Display visible state and make it toggable

    switch (section)
    {
        case ColumnVisible:
        {
            return i18nc("@title: track list header", "Color");
        }

        case ColumnFilename:
        {
            return i18nc("@title: track list header", "Filename");
        }

        case ColumnNPoints:
        {
            return i18nc("@title: track list header", "#points");
        }
    }

    return false;
}

Qt::ItemFlags TrackListModel::flags(const QModelIndex& index) const
{
    if (!index.isValid())<--- Assuming that condition '!index.isValid()' is not redundant
    {
        return Qt::NoItemFlags;
    }

    if (index.isValid())<--- Condition 'index.isValid()' is always true
    {
        Q_ASSERT(index.model() == this);
    }

    return QAbstractItemModel::flags(index);
}

void Digikam::TrackListModel::slotTrackManagerUpdated()
{
    /// @todo The TrackManager should send more detailed reports

    beginResetModel();
    endResetModel();
}

TrackManager::Track TrackListModel::getTrackForIndex(const QModelIndex& index) const
{
    if (index.isValid())
    {
        return d->trackManager->getTrackById(index.internalId());
    }

    return TrackManager::Track();
}

} // namespace Digikam

#include "moc_track_listmodel.cpp"