blob: 67e021d6225ead1f59c916708f91834e42cdf5e4 (
plain)
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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
/*
treeitem.cpp
A container for items of data supplied by the simple tree model.
*/
#include "treeitem.h"
//! [0]
TreeItem::TreeItem(QVariantList data, TreeItem *parent)
: m_itemData(std::move(data)), m_parentItem(parent)
{}
//! [0]
//! [1]
void TreeItem::appendChild(std::unique_ptr<TreeItem> &&child)
{
m_childItems.push_back(std::move(child));
}
//! [1]
//! [2]
TreeItem *TreeItem::child(int row)
{
return row >= 0 && row < childCount() ? m_childItems.at(row).get() : nullptr;
}
//! [2]
//! [3]
int TreeItem::childCount() const
{
return int(m_childItems.size());
}
//! [3]
//! [4]
int TreeItem::columnCount() const
{
return int(m_itemData.count());
}
//! [4]
//! [5]
QVariant TreeItem::data(int column) const
{
return m_itemData.value(column);
}
//! [5]
//! [6]
TreeItem *TreeItem::parentItem()
{
return m_parentItem;
}
//! [6]
//! [7]
int TreeItem::row() const
{
if (m_parentItem == nullptr)
return 0;
const auto it = std::find_if(m_parentItem->m_childItems.cbegin(), m_parentItem->m_childItems.cend(),
[this](const std::unique_ptr<TreeItem> &treeItem) {
return treeItem.get() == this;
});
if (it != m_parentItem->m_childItems.cend())
return std::distance(m_parentItem->m_childItems.cbegin(), it);
Q_ASSERT(false); // should not happen
return -1;
}
//! [7]
|