jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibGUI/PersistentModelIndex.h>
8
9namespace GUI {
10
11PersistentModelIndex::PersistentModelIndex(ModelIndex const& index)
12{
13 if (!index.is_valid())
14 return;
15
16 auto* model = const_cast<Model*>(index.model());
17 m_handle = model->register_persistent_index({}, index);
18}
19
20int PersistentModelIndex::row() const
21{
22 if (!has_valid_handle())
23 return -1;
24 return m_handle->m_index.row();
25}
26
27int PersistentModelIndex::column() const
28{
29 if (!has_valid_handle())
30 return -1;
31 return m_handle->m_index.column();
32}
33
34PersistentModelIndex PersistentModelIndex::parent() const
35{
36 if (!has_valid_handle())
37 return {};
38 return { m_handle->m_index.parent() };
39}
40
41PersistentModelIndex PersistentModelIndex::sibling_at_column(int column) const
42{
43 if (!has_valid_handle())
44 return {};
45
46 return { m_handle->m_index.sibling_at_column(column) };
47}
48
49Variant PersistentModelIndex::data(ModelRole role) const
50{
51 if (!has_valid_handle())
52 return {};
53 return { m_handle->m_index.data(role) };
54}
55
56PersistentModelIndex::operator ModelIndex() const
57{
58 if (!has_valid_handle())
59 return {};
60 else
61 return m_handle->m_index;
62}
63
64bool PersistentModelIndex::operator==(PersistentModelIndex const& other) const
65{
66 bool is_this_valid = has_valid_handle();
67 bool is_other_valid = other.has_valid_handle();
68
69 if (!is_this_valid && !is_other_valid)
70 return true;
71 if (is_this_valid != is_other_valid)
72 return false;
73
74 return m_handle->m_index == other.m_handle->m_index;
75}
76
77bool PersistentModelIndex::operator!=(PersistentModelIndex const& other) const
78{
79 return !(*this == other);
80}
81
82bool PersistentModelIndex::operator==(ModelIndex const& other) const
83{
84 if (!has_valid_handle()) {
85 return !other.is_valid();
86 }
87
88 return m_handle->m_index == other;
89}
90
91bool PersistentModelIndex::operator!=(ModelIndex const& other) const
92{
93 return !(*this == other);
94}
95
96}