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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/JsonObject.h>
28#include <LibCore/File.h>
29#include <LibGUI/JsonArrayModel.h>
30
31namespace GUI {
32
33void JsonArrayModel::update()
34{
35 auto file = Core::File::construct(m_json_path);
36 if (!file->open(Core::IODevice::ReadOnly)) {
37 dbg() << "Unable to open " << file->filename();
38 m_array.clear();
39 did_update();
40 return;
41 }
42
43 auto json = JsonValue::from_string(file->read_all());
44
45 ASSERT(json.is_array());
46 m_array = json.as_array();
47
48 did_update();
49}
50
51bool JsonArrayModel::store()
52{
53 auto file = Core::File::construct(m_json_path);
54 if (!file->open(Core::IODevice::WriteOnly)) {
55 dbg() << "Unable to open " << file->filename();
56 return false;
57 }
58
59 file->write(m_array.to_string());
60 file->close();
61 return true;
62}
63
64bool JsonArrayModel::add(const Vector<JsonValue>&& values)
65{
66 ASSERT(values.size() == m_fields.size());
67 JsonObject obj;
68 for (size_t i = 0; i < m_fields.size(); ++i) {
69 auto& field_spec = m_fields[i];
70 obj.set(field_spec.json_field_name, values.at(i));
71 }
72 m_array.append(move(obj));
73 did_update();
74 return true;
75}
76
77bool JsonArrayModel::remove(int row)
78{
79 if (row >= m_array.size())
80 return false;
81
82 JsonArray new_array;
83 for (int i = 0; i < m_array.size(); ++i)
84 if (i != row)
85 new_array.append(m_array.at(i));
86
87 m_array = new_array;
88
89 did_update();
90
91 return true;
92}
93
94Model::ColumnMetadata JsonArrayModel::column_metadata(int column) const
95{
96 ASSERT(column < static_cast<int>(m_fields.size()));
97 return { 100, m_fields[column].text_alignment };
98}
99
100Variant JsonArrayModel::data(const ModelIndex& index, Role role) const
101{
102 auto& field_spec = m_fields[index.column()];
103 auto& object = m_array.at(index.row()).as_object();
104
105 if (role == Model::Role::Display) {
106 auto& json_field_name = field_spec.json_field_name;
107 auto data = object.get(json_field_name);
108 if (field_spec.massage_for_display)
109 return field_spec.massage_for_display(object);
110 if (data.is_number())
111 return data.to_i32();
112 return object.get(json_field_name).to_string();
113 }
114
115 if (role == Model::Role::Sort) {
116 if (field_spec.massage_for_sort)
117 return field_spec.massage_for_sort(object);
118 return data(index, Role::Display);
119 }
120
121 if (role == Model::Role::Custom) {
122 if (field_spec.massage_for_custom)
123 return field_spec.massage_for_custom(object);
124 return {};
125 }
126
127 return {};
128}
129
130void JsonArrayModel::set_json_path(const String& json_path)
131{
132 if (m_json_path == json_path)
133 return;
134
135 m_json_path = json_path;
136 update();
137}
138
139}