06c6c40df9
This makes it possible to include fewer full definitions of things, which makes the file about 30% faster to compile.
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
/*
|
||
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
|
||
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <LibJS/Heap/Heap.h>
|
||
#include <LibJS/Runtime/Error.h>
|
||
#include <LibWeb/DOM/LiveNodeList.h>
|
||
#include <LibWeb/DOM/Node.h>
|
||
|
||
namespace Web::DOM {
|
||
|
||
WebIDL::ExceptionOr<JS::NonnullGCPtr<NodeList>> LiveNodeList::create(JS::Realm& realm, Node& root, Scope scope, Function<bool(Node const&)> filter)
|
||
{
|
||
return MUST_OR_THROW_OOM(realm.heap().allocate<LiveNodeList>(realm, realm, root, scope, move(filter)));
|
||
}
|
||
|
||
LiveNodeList::LiveNodeList(JS::Realm& realm, Node& root, Scope scope, Function<bool(Node const&)> filter)
|
||
: NodeList(realm)
|
||
, m_root(root)
|
||
, m_filter(move(filter))
|
||
, m_scope(scope)
|
||
{
|
||
}
|
||
|
||
LiveNodeList::~LiveNodeList() = default;
|
||
|
||
void LiveNodeList::visit_edges(Cell::Visitor& visitor)
|
||
{
|
||
Base::visit_edges(visitor);
|
||
visitor.visit(m_root.ptr());
|
||
}
|
||
|
||
JS::MarkedVector<Node*> LiveNodeList::collection() const
|
||
{
|
||
JS::MarkedVector<Node*> nodes(heap());
|
||
if (m_scope == Scope::Descendants) {
|
||
m_root->for_each_in_subtree([&](auto& node) {
|
||
if (m_filter(node))
|
||
nodes.append(const_cast<Node*>(&node));
|
||
return IterationDecision::Continue;
|
||
});
|
||
} else {
|
||
m_root->for_each_child([&](auto& node) {
|
||
if (m_filter(node))
|
||
nodes.append(const_cast<Node*>(&node));
|
||
return IterationDecision::Continue;
|
||
});
|
||
}
|
||
return nodes;
|
||
}
|
||
|
||
// https://dom.spec.whatwg.org/#dom-nodelist-length
|
||
u32 LiveNodeList::length() const
|
||
{
|
||
return collection().size();
|
||
}
|
||
|
||
// https://dom.spec.whatwg.org/#dom-nodelist-item
|
||
Node const* LiveNodeList::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.
|
||
auto nodes = collection();
|
||
if (index >= nodes.size())
|
||
return nullptr;
|
||
return nodes[index];
|
||
}
|
||
|
||
// https://dom.spec.whatwg.org/#ref-for-dfn-supported-property-indices
|
||
bool LiveNodeList::is_supported_property_index(u32 index) const
|
||
{
|
||
// The object’s 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 < length();
|
||
}
|
||
|
||
}
|