0
|
1 |
/****************************************************************************
|
|
2 |
**
|
|
3 |
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
4 |
** All rights reserved.
|
|
5 |
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
6 |
**
|
|
7 |
** This file is part of the QtCore module of the Qt Toolkit.
|
|
8 |
**
|
|
9 |
** $QT_BEGIN_LICENSE:LGPL$
|
|
10 |
** No Commercial Usage
|
|
11 |
** This file contains pre-release code and may not be distributed.
|
|
12 |
** You may use this file in accordance with the terms and conditions
|
|
13 |
** contained in the Technology Preview License Agreement accompanying
|
|
14 |
** this package.
|
|
15 |
**
|
|
16 |
** GNU Lesser General Public License Usage
|
|
17 |
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
18 |
** General Public License version 2.1 as published by the Free Software
|
|
19 |
** Foundation and appearing in the file LICENSE.LGPL included in the
|
|
20 |
** packaging of this file. Please review the following information to
|
|
21 |
** ensure the GNU Lesser General Public License version 2.1 requirements
|
|
22 |
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
23 |
**
|
|
24 |
** In addition, as a special exception, Nokia gives you certain additional
|
|
25 |
** rights. These rights are described in the Nokia Qt LGPL Exception
|
|
26 |
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
27 |
**
|
|
28 |
** If you have questions regarding the use of this file, please contact
|
|
29 |
** Nokia at qt-info@nokia.com.
|
|
30 |
**
|
|
31 |
**
|
|
32 |
**
|
|
33 |
**
|
|
34 |
**
|
|
35 |
**
|
|
36 |
**
|
|
37 |
**
|
|
38 |
** $QT_END_LICENSE$
|
|
39 |
**
|
|
40 |
****************************************************************************/
|
|
41 |
|
|
42 |
#ifndef QABSTRACTITEMMODEL_P_H
|
|
43 |
#define QABSTRACTITEMMODEL_P_H
|
|
44 |
|
|
45 |
//
|
|
46 |
// W A R N I N G
|
|
47 |
// -------------
|
|
48 |
//
|
|
49 |
// This file is not part of the Qt API. It exists for the convenience
|
|
50 |
// of QAbstractItemModel*. This header file may change from version
|
|
51 |
// to version without notice, or even be removed.
|
|
52 |
//
|
|
53 |
// We mean it.
|
|
54 |
//
|
|
55 |
//
|
|
56 |
|
|
57 |
#include "private/qobject_p.h"
|
|
58 |
#include "QtCore/qstack.h"
|
|
59 |
#include "QtCore/qset.h"
|
|
60 |
#include "QtCore/qhash.h"
|
|
61 |
|
|
62 |
QT_BEGIN_NAMESPACE
|
|
63 |
|
|
64 |
class QPersistentModelIndexData
|
|
65 |
{
|
|
66 |
public:
|
|
67 |
QPersistentModelIndexData() : model(0) {}
|
|
68 |
QPersistentModelIndexData(const QModelIndex &idx) : index(idx), model(idx.model()) {}
|
|
69 |
QModelIndex index;
|
|
70 |
QAtomicInt ref;
|
|
71 |
const QAbstractItemModel *model;
|
|
72 |
static QPersistentModelIndexData *create(const QModelIndex &index);
|
|
73 |
static void destroy(QPersistentModelIndexData *data);
|
|
74 |
};
|
|
75 |
|
|
76 |
class Q_CORE_EXPORT QAbstractItemModelPrivate : public QObjectPrivate
|
|
77 |
{
|
|
78 |
Q_DECLARE_PUBLIC(QAbstractItemModel)
|
|
79 |
|
|
80 |
public:
|
|
81 |
QAbstractItemModelPrivate() : QObjectPrivate(), supportedDragActions(-1), roleNames(defaultRoleNames()) {}
|
|
82 |
void removePersistentIndexData(QPersistentModelIndexData *data);
|
|
83 |
void movePersistentIndexes(QVector<QPersistentModelIndexData *> indexes, int change, const QModelIndex &parent, Qt::Orientation orientation);
|
|
84 |
void rowsAboutToBeInserted(const QModelIndex &parent, int first, int last);
|
|
85 |
void rowsInserted(const QModelIndex &parent, int first, int last);
|
|
86 |
void rowsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
|
|
87 |
void rowsRemoved(const QModelIndex &parent, int first, int last);
|
|
88 |
void columnsAboutToBeInserted(const QModelIndex &parent, int first, int last);
|
|
89 |
void columnsInserted(const QModelIndex &parent, int first, int last);
|
|
90 |
void columnsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
|
|
91 |
void columnsRemoved(const QModelIndex &parent, int first, int last);
|
|
92 |
static QAbstractItemModel *staticEmptyModel();
|
|
93 |
static bool variantLessThan(const QVariant &v1, const QVariant &v2);
|
|
94 |
|
|
95 |
void itemsAboutToBeMoved(const QModelIndex &srcParent, int srcFirst, int srcLast, const QModelIndex &destinationParent, int destinationChild, Qt::Orientation);
|
|
96 |
void itemsMoved(const QModelIndex &srcParent, int srcFirst, int srcLast, const QModelIndex &destinationParent, int destinationChild, Qt::Orientation orientation);
|
|
97 |
bool allowMove(const QModelIndex &srcParent, int srcFirst, int srcLast, const QModelIndex &destinationParent, int destinationChild, Qt::Orientation orientation);
|
|
98 |
|
|
99 |
inline QModelIndex createIndex(int row, int column, void *data = 0) const {
|
|
100 |
return q_func()->createIndex(row, column, data);
|
|
101 |
}
|
|
102 |
|
|
103 |
inline QModelIndex createIndex(int row, int column, int id) const {
|
|
104 |
return q_func()->createIndex(row, column, id);
|
|
105 |
}
|
|
106 |
|
|
107 |
inline bool indexValid(const QModelIndex &index) const {
|
|
108 |
return (index.row() >= 0) && (index.column() >= 0) && (index.model() == q_func());
|
|
109 |
}
|
|
110 |
|
|
111 |
inline void invalidatePersistentIndexes() {
|
|
112 |
foreach (QPersistentModelIndexData *data, persistent.indexes) {
|
|
113 |
data->index = QModelIndex();
|
|
114 |
data->model = 0;
|
|
115 |
}
|
|
116 |
persistent.indexes.clear();
|
|
117 |
}
|
|
118 |
|
|
119 |
/*!
|
|
120 |
\internal
|
|
121 |
clean the QPersistentModelIndex relative to the index if there is one.
|
|
122 |
To be used before an index is invalided
|
|
123 |
*/
|
|
124 |
inline void invalidatePersistentIndex(const QModelIndex &index) {
|
|
125 |
QHash<QModelIndex, QPersistentModelIndexData *>::iterator it = persistent.indexes.find(index);
|
|
126 |
if(it != persistent.indexes.end()) {
|
|
127 |
QPersistentModelIndexData *data = *it;
|
|
128 |
persistent.indexes.erase(it);
|
|
129 |
data->index = QModelIndex();
|
|
130 |
data->model = 0;
|
|
131 |
}
|
|
132 |
}
|
|
133 |
|
|
134 |
struct Change {
|
|
135 |
Change() : first(-1), last(-1) {}
|
|
136 |
Change(const Change &c) : parent(c.parent), first(c.first), last(c.last) {}
|
|
137 |
Change(const QModelIndex &p, int f, int l) : parent(p), first(f), last(l) {}
|
|
138 |
QModelIndex parent;
|
|
139 |
int first, last;
|
|
140 |
|
|
141 |
bool isValid() { return first >= 0 && last >= 0; }
|
|
142 |
};
|
|
143 |
QStack<Change> changes;
|
|
144 |
|
|
145 |
struct Persistent {
|
|
146 |
Persistent() {}
|
|
147 |
QHash<QModelIndex, QPersistentModelIndexData *> indexes;
|
|
148 |
QStack<QVector<QPersistentModelIndexData *> > moved;
|
|
149 |
QStack<QVector<QPersistentModelIndexData *> > invalidated;
|
|
150 |
void insertMultiAtEnd(const QModelIndex& key, QPersistentModelIndexData *data);
|
|
151 |
} persistent;
|
|
152 |
|
|
153 |
Qt::DropActions supportedDragActions;
|
|
154 |
|
|
155 |
QHash<int,QByteArray> roleNames;
|
|
156 |
static const QHash<int,QByteArray> &defaultRoleNames();
|
|
157 |
};
|
|
158 |
|
|
159 |
QT_END_NAMESPACE
|
|
160 |
|
|
161 |
#endif // QABSTRACTITEMMODEL_P_H
|