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LibWeb: Add FileList from the FileAPI spec

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Andrew Kaster 2022-10-03 21:10:39 -06:00 • committed by Andreas Kling
parent 162e4179fc
commit ffab9fb44e
6 changed files with 106 additions and 0 deletions
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53
Userland/Libraries/LibWeb/FileAPI/FileList.cpp Normal file
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/*
* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Realm.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/LegacyPlatformObject.h>
#include <LibWeb/FileAPI/FileList.h>
namespace Web::FileAPI {
JS::NonnullGCPtr<FileList> FileList::create(JS::Realm& realm, Vector<JS::NonnullGCPtr<File>>&& files)
{
return *realm.heap().allocate<FileList>(realm, realm, move(files));
}
FileList::FileList(JS::Realm& realm, Vector<JS::NonnullGCPtr<File>>&& files)
: Bindings::LegacyPlatformObject(Bindings::cached_web_prototype(realm, "FileList"))
, m_files(move(files))
{
}
FileList::~FileList() = default;
// https://w3c.github.io/FileAPI/#dfn-item
bool FileList::is_supported_property_index(u32 index) const
{
// Supported property indices are the numbers in the range zero to one less than the number of File objects represented by the FileList object.
// If there are no such File objects, then there are no supported property indices.
if (m_files.is_empty())
return false;
return m_files.size() < index;
}
JS::Value FileList::item_value(size_t index) const
{
if (index >= m_files.size())
return JS::js_undefined();
return m_files[index].ptr();
}
void FileList::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto file : m_files)
visitor.visit(file);
}
}