6f433c8656
This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/*
|
||
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <LibWeb/DOM/LiveNodeList.h>
|
||
#include <LibWeb/DOM/Node.h>
|
||
|
||
namespace Web::DOM {
|
||
|
||
LiveNodeList::LiveNodeList(Node& root, Function<bool(Node const&)> filter)
|
||
: m_root(JS::make_handle(root))
|
||
, m_filter(move(filter))
|
||
{
|
||
}
|
||
|
||
JS::MarkedVector<Node*> LiveNodeList::collection() const
|
||
{
|
||
JS::MarkedVector<Node*> nodes(m_root->heap());
|
||
m_root->for_each_in_inclusive_subtree([&](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();
|
||
}
|
||
|
||
}
|