1 /*
2 modelevent.cpp
3
4 This file is part of GammaRay, the Qt application inspection and
5 manipulation tool.
6
7 Copyright (C) 2015-2021 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
8 Author: Volker Krause <volker.krause@kdab.com>
9
10 Licensees holding valid commercial KDAB GammaRay licenses may use this file in
11 accordance with GammaRay Commercial License Agreement provided with the Software.
12
13 Contact info@kdab.com if any conditions of this licensing are not clear to you.
14
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation, either version 2 of the License, or
18 (at your option) any later version.
19
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
24
25 You should have received a copy of the GNU General Public License
26 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 */
28
29 #include "modelevent.h"
30
31 #include <QAbstractItemModel>
32 #include <QCoreApplication>
33
34 using namespace GammaRay;
35
ModelEvent(bool modelUsed)36 ModelEvent::ModelEvent(bool modelUsed)
37 : QEvent(eventType())
38 , m_used(modelUsed)
39 {
40 }
41
42 ModelEvent::~ModelEvent() = default;
43
used() const44 bool ModelEvent::used() const
45 {
46 return m_used;
47 }
48
eventType()49 QEvent::Type ModelEvent::eventType()
50 {
51 static int id = -1;
52 if (id < 0)
53 id = registerEventType();
54 return static_cast<QEvent::Type>(id);
55 }
56
used(const QAbstractItemModel * model)57 void Model::used(const QAbstractItemModel *model)
58 {
59 Q_ASSERT(model);
60 ModelEvent ev(true);
61 QCoreApplication::sendEvent(const_cast<QAbstractItemModel *>(model), &ev); // const_cast hack is needed since QItemSelectionModel gives us const*...
62 }
63
unused(QAbstractItemModel * model)64 void Model::unused(QAbstractItemModel *model)
65 {
66 Q_ASSERT(model);
67 ModelEvent ev(false);
68 QCoreApplication::sendEvent(model, &ev);
69 }
70