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
|
/* This file is part of the KDE project
Copyright 2009 Johannes Simon <johannes.simon@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "ModelObserver.h"
#include <QAbstractItemModel>
#include <QDebug>
ModelObserver::ModelObserver(QAbstractItemModel *source)
: QObject()
{
m_source = source;
m_numRows = 0;
m_numCols = 0;
m_lastDataChange.valid = false;
m_lastHeaderDataChange.valid = false;
connect(source, SIGNAL(rowsInserted(QModelIndex,int,int)),
this , SLOT(slotRowsInserted(QModelIndex,int,int)));
connect(source, SIGNAL(columnsInserted(QModelIndex,int,int)),
this, SLOT(slotColumnsInserted(QModelIndex,int,int)));
connect(source, SIGNAL(rowsRemoved(QModelIndex,int,int)),
this, SLOT(slotRowsRemoved(QModelIndex,int,int)));
connect(source, SIGNAL(columnsRemoved(QModelIndex,int,int)),
this, SLOT(slotColumnsRemoved(QModelIndex,int,int)));
connect(source, SIGNAL(headerDataChanged(Qt::Orientation,int,int)),
this, SLOT(slotHeaderDataChanged(Qt::Orientation,int,int)));
connect(source, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
this, SLOT(slotDataChanged(QModelIndex,QModelIndex)));
connect(source, SIGNAL(modelReset()),
this, SLOT(slotModelReset()));
}
void ModelObserver::slotRowsInserted(const QModelIndex & /*parent*/, int start, int end)
{
Q_ASSERT(start <= end);
m_numRows += end - start + 1;
qDebug() << "m_numRows: " << m_numRows;
}
void ModelObserver::slotColumnsInserted(const QModelIndex & /*parent*/, int start, int end)
{
Q_ASSERT(start <= end);
m_numCols += end - start + 1;
qDebug() << "m_numCols: " << m_numCols;
}
void ModelObserver::slotRowsRemoved(const QModelIndex & /*parent*/, int start, int end)
{
Q_ASSERT(start <= end);
Q_ASSERT(end < m_numRows);
m_numRows -= end - start + 1;
qDebug() << "m_numRows: " << m_numRows;
}
void ModelObserver::slotColumnsRemoved(const QModelIndex & /*parent*/, int start, int end)
{
Q_ASSERT(start <= end);
Q_ASSERT(end < m_numCols);
m_numCols -= end - start + 1;
qDebug() << "m_numCols: " << m_numCols;
}
void ModelObserver::slotModelReset()
{
qDebug() << "TestModel was reset";
m_numRows = m_source->rowCount();
m_numCols = m_source->columnCount();
}
void ModelObserver::slotHeaderDataChanged(Qt::Orientation orientation, int first, int last)
{
m_lastHeaderDataChange.orientation = orientation;
m_lastHeaderDataChange.first = first;
m_lastHeaderDataChange.last = last;
m_lastHeaderDataChange.valid = true;
}
void ModelObserver::slotDataChanged(const QModelIndex & topLeft, const QModelIndex & bottomRight)
{
m_lastDataChange.topLeft = topLeft;
m_lastDataChange.bottomRight = bottomRight;
m_lastHeaderDataChange.valid = true;
}
|
