Differential D20265 Diff 55470 libnotificationmanager/limitedrowcountproxymodel.cpp

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libnotificationmanager/limitedrowcountproxymodel.cpp

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1		/*
2		* Copyright 2019 Kai Uwe Broulik <kde@privat.broulik.de>
3		*
4		* This library is free software; you can redistribute it and/or
5		* modify it under the terms of the GNU Lesser General Public
6		* License as published by the Free Software Foundation; either
7		* version 2.1 of the License, or (at your option) version 3, or any
8		* later version accepted by the membership of KDE e.V. (or its
9		* successor approved by the membership of KDE e.V.), which shall
10		* act as a proxy defined in Section 6 of version 3 of the license.
11		*
12		* This library is distributed in the hope that it will be useful,
13		* but WITHOUT ANY WARRANTY; without even the implied warranty of
14		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15		* Lesser General Public License for more details.
16		*
17		* You should have received a copy of the GNU Lesser General Public
18		* License along with this library. If not, see <http://www.gnu.org/licenses/>.
19		*/
20
21		#include "limitedrowcountproxymodel_p.h"
22
23		#include "notifications.h"
24
25		using namespace NotificationManager;
26
	davidedmundsonUnsubmitted Not Done This is a good candidate for KItemModels davidedmundson: This is a good candidate for KItemModels
27		LimitedRowCountProxyModel::LimitedRowCountProxyModel(QObject *parent)
28		: QSortFilterProxyModel(parent)
29		{
30
31		}
32
33		LimitedRowCountProxyModel::~LimitedRowCountProxyModel() = default;
34
35		void LimitedRowCountProxyModel::setSourceModel(QAbstractItemModel *sourceModel)
36		{
37		if (this->sourceModel()) {
38		disconnect(this->sourceModel(), nullptr, this, nullptr);
39		}
40
41		QSortFilterProxyModel::setSourceModel(sourceModel);
42
43		if (sourceModel) {
44		connect(sourceModel, &QAbstractItemModel::rowsInserted, this, &LimitedRowCountProxyModel::invalidateFilter);
45		connect(sourceModel, &QAbstractItemModel::rowsRemoved, this, &LimitedRowCountProxyModel::invalidateFilter);
	davidedmundsonUnsubmitted Done I assume we need this as a row being inserted earlier in the list doesn't cause us to re-evaluate existing rows that previously passed the filter and are unchanged? We should have this for rowsMoved davidedmundson: I assume we need this as a row being inserted earlier in the list doesn't cause us to re…
46		}
47		}
48
49		int LimitedRowCountProxyModel::limit() const
50		{
51		return m_limit;
52		}
53
54		void LimitedRowCountProxyModel::setLimit(int limit)
55		{
56		if (m_limit != limit) {
57		m_limit = limit;
58		invalidateFilter();
59		emit limitChanged();
60		}
61		}
62
63		bool LimitedRowCountProxyModel::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
64		{
65		if (source_parent.isValid()) {
66		return true;
67		}
68
69		if (m_limit > 0) {
70		return source_row < m_limit;
71		}
72
73		return true;
74		}