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
|
/*
* Copyright (c) 2021, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/DOM/Attr.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/MutationType.h>
#include <LibWeb/DOM/StaticNodeList.h>
namespace Web::DOM {
JS::NonnullGCPtr<Attr> Attr::create(Document& document, FlyString local_name, String value, Element const* owner_element)
{
return *document.heap().allocate<Attr>(document.realm(), document, move(local_name), move(value), owner_element);
}
Attr::Attr(Document& document, FlyString local_name, String value, Element const* owner_element)
: Node(document, NodeType::ATTRIBUTE_NODE)
, m_qualified_name(move(local_name), {}, {})
, m_value(move(value))
, m_owner_element(owner_element)
{
set_prototype(&Bindings::cached_web_prototype(document.realm(), "Attr"));
}
void Attr::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_owner_element.ptr());
}
Element* Attr::owner_element()
{
return m_owner_element.ptr();
}
Element const* Attr::owner_element() const
{
return m_owner_element.ptr();
}
void Attr::set_owner_element(Element const* owner_element)
{
m_owner_element = owner_element;
}
// https://dom.spec.whatwg.org/#set-an-existing-attribute-value
void Attr::set_value(String value)
{
// 1. If attribute’s element is null, then set attribute’s value to value.
if (!owner_element()) {
m_value = move(value);
return;
}
// 2. Otherwise, change attribute to value.
// https://dom.spec.whatwg.org/#concept-element-attributes-change
// 1. Handle attribute changes for attribute with attribute’s element, attribute’s value, and value.
handle_attribute_changes(*owner_element(), m_value, value);
// 2. Set attribute’s value to value.
m_value = move(value);
}
// https://dom.spec.whatwg.org/#handle-attribute-changes
void Attr::handle_attribute_changes(Element& element, String const& old_value, [[maybe_unused]] String const& new_value)
{
// 1. Queue a mutation record of "attributes" for element with attribute’s local name, attribute’s namespace, oldValue, « », « », null, and null.
element.queue_mutation_record(MutationType::attributes, local_name(), namespace_uri(), old_value, StaticNodeList::create(realm(), {}), StaticNodeList::create(realm(), {}), nullptr, nullptr);
// FIXME: 2. If element is custom, then enqueue a custom element callback reaction with element, callback name "attributeChangedCallback", and an argument list containing attribute’s local name, oldValue, newValue, and attribute’s namespace.
// FIXME: 3. Run the attribute change steps with element, attribute’s local name, oldValue, newValue, and attribute’s namespace.
}
}
|
