1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
3
4//
5// W A R N I N G
6// -------------
7//
8// This file is not part of the QtDataVisualization API. It exists purely as an
9// implementation detail. This header file may change from version to
10// version without notice, or even be removed.
11//
12// We mean it.
13
14#ifndef ABSTRACTITEMMODELHANDLER_P_H
15#define ABSTRACTITEMMODELHANDLER_P_H
16
17#include "datavisualizationglobal_p.h"
18#include <QtCore/QAbstractItemModel>
19#include <QtCore/QPointer>
20#include <QtCore/QTimer>
21
22QT_BEGIN_NAMESPACE
23
24class AbstractItemModelHandler : public QObject
25{
26 Q_OBJECT
27public:
28 AbstractItemModelHandler(QObject *parent = 0);
29 virtual ~AbstractItemModelHandler();
30
31 virtual void setItemModel(QAbstractItemModel *itemModel);
32 virtual QAbstractItemModel *itemModel() const;
33
34public Q_SLOTS:
35 virtual void handleColumnsInserted(const QModelIndex &parent, int start, int end);
36 virtual void handleColumnsMoved(const QModelIndex &sourceParent, int sourceStart,
37 int sourceEnd, const QModelIndex &destinationParent,
38 int destinationColumn);
39 virtual void handleColumnsRemoved(const QModelIndex &parent, int start, int end);
40 virtual void handleDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
41 const QList<int> &roles = QList<int>());
42 virtual void handleLayoutChanged(const QList<QPersistentModelIndex> &parents = QList<QPersistentModelIndex>(),
43 QAbstractItemModel::LayoutChangeHint hint = QAbstractItemModel::NoLayoutChangeHint);
44 virtual void handleModelReset();
45 virtual void handleRowsInserted(const QModelIndex &parent, int start, int end);
46 virtual void handleRowsMoved(const QModelIndex &sourceParent, int sourceStart, int sourceEnd,
47 const QModelIndex &destinationParent, int destinationRow);
48 virtual void handleRowsRemoved(const QModelIndex &parent, int start, int end);
49
50 virtual void handleMappingChanged();
51 virtual void handlePendingResolve();
52
53Q_SIGNALS:
54 void itemModelChanged(const QAbstractItemModel *itemModel);
55
56protected:
57 virtual void resolveModel() = 0;
58
59 QPointer<QAbstractItemModel> m_itemModel; // Not owned
60 bool resolvePending;
61 QTimer m_resolveTimer;
62 bool m_fullReset;
63
64private:
65 Q_DISABLE_COPY(AbstractItemModelHandler)
66};
67
68static constexpr int noRoleIndex = -1;
69
70QT_END_NAMESPACE
71
72#endif
73

source code of qtdatavis3d/src/datavisualization/data/abstractitemmodelhandler_p.h