ladybird/Userland/Libraries/LibWeb/DOM/StaticNodeList.cpp
Andrew Kaster 8de7e49a56 LibWeb: Remove unecessary dependence on Window from DOM and WebIDL
These classes only needed Window to get at its realm. Pass a realm
directly to construct DOM and WebIDL classes.

This change importantly removes the guarantee that a Document will
always have a non-null Window object. Only Documents created by a
BrowsingContext will have a non-null Window object. Documents created by
for example, DocumentFragment, will not have a Window (soon).

This incremental commit leaves some workarounds in place to keep other
parts of the code building.
2022-10-01 21:05:32 +01:00

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/*
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Heap/Heap.h>
#include <LibWeb/DOM/StaticNodeList.h>
namespace Web::DOM {
JS::NonnullGCPtr<NodeList> StaticNodeList::create(JS::Realm& realm, Vector<JS::Handle<Node>> static_nodes)
{
return *realm.heap().allocate<StaticNodeList>(realm, realm, move(static_nodes));
}
StaticNodeList::StaticNodeList(JS::Realm& realm, Vector<JS::Handle<Node>> static_nodes)
: NodeList(realm)
{
for (auto& node : static_nodes)
m_static_nodes.append(*node);
}
StaticNodeList::~StaticNodeList() = default;
void StaticNodeList::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto& node : m_static_nodes)
visitor.visit(node);
}
// https://dom.spec.whatwg.org/#dom-nodelist-length
u32 StaticNodeList::length() const
{
return m_static_nodes.size();
}
// https://dom.spec.whatwg.org/#dom-nodelist-item
Node const* StaticNodeList::item(u32 index) const
{
// The item(index) method must return the indexth node in the collection. If there is no indexth node in the collection, then the method must return null.
if (index >= m_static_nodes.size())
return nullptr;
return &m_static_nodes[index];
}
// https://dom.spec.whatwg.org/#ref-for-dfn-supported-property-indices
bool StaticNodeList::is_supported_property_index(u32 index) const
{
// The objects supported property indices are the numbers in the range zero to one less than the number of nodes represented by the collection.
// If there are no such elements, then there are no supported property indices.
return index < m_static_nodes.size();
}
}