mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-20 09:49:15 +03:00
c0d7f748ed
This commit introduces a WEB_SET_PROTOTYPE_FOR_INTERFACE macro that caches the interface name in a local static FlyString. This means that we only pay for FlyString-from-literal lookup once per browser lifetime instead of every time the interface is instantiated.
121 lines
4.4 KiB
C++
121 lines
4.4 KiB
C++
/*
|
||
* Copyright (c) 2021, Tim Flynn <trflynn89@serenityos.org>
|
||
* Copyright (c) 2023, Luke Wilde <lukew@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>
|
||
#include <LibWeb/HTML/CustomElements/CustomElementReactionNames.h>
|
||
|
||
namespace Web::DOM {
|
||
|
||
JS_DEFINE_ALLOCATOR(Attr);
|
||
|
||
JS::NonnullGCPtr<Attr> Attr::create(Document& document, FlyString local_name, String value, Element* owner_element)
|
||
{
|
||
return document.heap().allocate<Attr>(document.realm(), document, QualifiedName(move(local_name), Optional<FlyString> {}, Optional<FlyString> {}), move(value), owner_element);
|
||
}
|
||
|
||
JS::NonnullGCPtr<Attr> Attr::create(Document& document, QualifiedName qualified_name, String value, Element* owner_element)
|
||
{
|
||
return document.heap().allocate<Attr>(document.realm(), document, move(qualified_name), move(value), owner_element);
|
||
}
|
||
|
||
JS::NonnullGCPtr<Attr> Attr::clone(Document& document)
|
||
{
|
||
return *heap().allocate<Attr>(realm(), document, m_qualified_name, m_value, nullptr);
|
||
}
|
||
|
||
Attr::Attr(Document& document, QualifiedName qualified_name, String value, Element* owner_element)
|
||
: Node(document, NodeType::ATTRIBUTE_NODE)
|
||
, m_qualified_name(move(qualified_name))
|
||
, m_lowercase_name(MUST(String(m_qualified_name.as_string()).to_lowercase()))
|
||
, m_value(move(value))
|
||
, m_owner_element(owner_element)
|
||
{
|
||
}
|
||
|
||
void Attr::initialize(JS::Realm& realm)
|
||
{
|
||
Base::initialize(realm);
|
||
WEB_SET_PROTOTYPE_FOR_INTERFACE(Attr);
|
||
}
|
||
|
||
void Attr::visit_edges(Cell::Visitor& visitor)
|
||
{
|
||
Base::visit_edges(visitor);
|
||
visitor.visit(m_owner_element);
|
||
}
|
||
|
||
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* 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);
|
||
}
|
||
// 2. Otherwise, change attribute to value.
|
||
else {
|
||
change_attribute(move(value));
|
||
}
|
||
}
|
||
|
||
// https://dom.spec.whatwg.org/#concept-element-attributes-change
|
||
void Attr::change_attribute(String value)
|
||
{
|
||
// 1. Let oldValue be attribute’s value.
|
||
auto old_value = move(m_value);
|
||
|
||
// 2. Set attribute’s value to value.
|
||
m_value = move(value);
|
||
|
||
// 3. Handle attribute changes for attribute with attribute’s element, oldValue, and value.
|
||
handle_attribute_changes(*owner_element(), old_value, m_value);
|
||
}
|
||
|
||
// https://dom.spec.whatwg.org/#handle-attribute-changes
|
||
void Attr::handle_attribute_changes(Element& element, Optional<String> const& old_value, Optional<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, {}, {}, nullptr, nullptr);
|
||
|
||
// 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.
|
||
if (element.is_custom()) {
|
||
auto& vm = this->vm();
|
||
|
||
JS::MarkedVector<JS::Value> arguments { vm.heap() };
|
||
arguments.append(JS::PrimitiveString::create(vm, local_name()));
|
||
arguments.append(!old_value.has_value() ? JS::js_null() : JS::PrimitiveString::create(vm, old_value.value()));
|
||
arguments.append(!new_value.has_value() ? JS::js_null() : JS::PrimitiveString::create(vm, new_value.value()));
|
||
arguments.append(!namespace_uri().has_value() ? JS::js_null() : JS::PrimitiveString::create(vm, namespace_uri().value()));
|
||
|
||
element.enqueue_a_custom_element_callback_reaction(HTML::CustomElementReactionNames::attributeChangedCallback, move(arguments));
|
||
}
|
||
|
||
// 3. Run the attribute change steps with element, attribute’s local name, oldValue, newValue, and attribute’s namespace.
|
||
element.run_attribute_change_steps(local_name(), old_value, new_value, namespace_uri());
|
||
}
|
||
|
||
}
|