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LibWeb: Introduce CustomElementRegistry and creating custom elements

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The main missing feature here is form associated custom elements.
This commit is contained in:
Luke Wilde 2023-03-29 23:46:18 +01:00 • committed by Andreas Kling
parent 083b547e97
commit 034aaf3f51
38 changed files with 1747 additions and 143 deletions
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30
Userland/Libraries/LibWeb/DOM/Attr.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2021, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -10,15 +11,16 @@
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/MutationType.h>
#include <LibWeb/DOM/StaticNodeList.h>
#include <LibWeb/HTML/CustomElements/CustomElementReactionNames.h>
namespace Web::DOM {
WebIDL::ExceptionOr<JS::NonnullGCPtr<Attr>> Attr::create(Document& document, DeprecatedFlyString local_name, DeprecatedString value, Element const* owner_element)
WebIDL::ExceptionOr<JS::NonnullGCPtr<Attr>> Attr::create(Document& document, DeprecatedFlyString local_name, DeprecatedString value, Element* owner_element)
{
return MUST_OR_THROW_OOM(document.heap().allocate<Attr>(document.realm(), document, QualifiedName(move(local_name), {}, {}), move(value), owner_element));
}
WebIDL::ExceptionOr<JS::NonnullGCPtr<Attr>> Attr::create(Document& document, QualifiedName qualified_name, DeprecatedString value, Element const* owner_element)
WebIDL::ExceptionOr<JS::NonnullGCPtr<Attr>> Attr::create(Document& document, QualifiedName qualified_name, DeprecatedString value, Element* owner_element)
{
return MUST_OR_THROW_OOM(document.heap().allocate<Attr>(document.realm(), document, move(qualified_name), move(value), owner_element));
}
@ -28,7 +30,7 @@ JS::NonnullGCPtr<Attr> Attr::clone(Document& document)
return *heap().allocate<Attr>(realm(), document, m_qualified_name, m_value, nullptr).release_allocated_value_but_fixme_should_propagate_errors();
}
Attr::Attr(Document& document, QualifiedName qualified_name, DeprecatedString value, Element const* owner_element)
Attr::Attr(Document& document, QualifiedName qualified_name, DeprecatedString value, Element* owner_element)
: Node(document, NodeType::ATTRIBUTE_NODE)
, m_qualified_name(move(qualified_name))
, m_value(move(value))
@ -50,12 +52,17 @@ void Attr::visit_edges(Cell::Visitor& 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)
void Attr::set_owner_element(Element* owner_element)
{
m_owner_element = owner_element;
}
@ -79,14 +86,25 @@ void Attr::set_value(DeprecatedString value)
}
// https://dom.spec.whatwg.org/#handle-attribute-changes
void Attr::handle_attribute_changes(Element const& element, DeprecatedString const& old_value, [[maybe_unused]] DeprecatedString const& new_value)
void Attr::handle_attribute_changes(Element& element, DeprecatedString const& old_value, DeprecatedString const& new_value)
{
// 1. Queue a mutation record of "attributes" for element with attribute’s local name, attribute’s namespace, oldValue, « », « », null, and null.
auto added_node_list = StaticNodeList::create(realm(), {}).release_value_but_fixme_should_propagate_errors();
auto removed_node_list = StaticNodeList::create(realm(), {}).release_value_but_fixme_should_propagate_errors();
element.queue_mutation_record(MutationType::attributes, local_name(), namespace_uri(), old_value, added_node_list, removed_node_list, 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.
// 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(JS::PrimitiveString::create(vm, old_value));
arguments.append(JS::PrimitiveString::create(vm, new_value));
arguments.append(JS::PrimitiveString::create(vm, namespace_uri()));
element.enqueue_a_custom_element_callback_reaction(HTML::CustomElementReactionNames::attributeChangedCallback, move(arguments));
}
// FIXME: 3. Run the attribute change steps with element, attribute’s local name, oldValue, newValue, and attribute’s namespace.
}