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/*
* Copyright (c) 2023, Kenneth Myhra <kennethmyhra@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/Completion.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/FileAPI/Blob.h>
#include <LibWeb/FileAPI/File.h>
#include <LibWeb/HTML/FormControlInfrastructure.h>
#include <LibWeb/WebIDL/DOMException.h>
#include <LibWeb/XHR/FormData.h>
namespace Web::XHR {
// https://xhr.spec.whatwg.org/#dom-formdata
WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> FormData::construct_impl(JS::Realm& realm, Optional<JS::NonnullGCPtr<HTML::HTMLFormElement>> form)
{
Vector<FormDataEntry> list;
// 1. If form is given, then:
if (form.has_value()) {
// 1. Let list be the result of constructing the entry list for form.
auto entry_list = TRY(construct_entry_list(realm, form.value()));
// 2. If list is null, then throw an "InvalidStateError" DOMException.
if (!entry_list.has_value())
return WebIDL::InvalidStateError::create(realm, "Form element does not contain any entries.");
// 3. Set this’s entry list to list.
list = entry_list.release_value();
}
return construct_impl(realm, move(list));
}
WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> FormData::construct_impl(JS::Realm& realm, Vector<FormDataEntry> entry_list)
{
return MUST_OR_THROW_OOM(realm.heap().allocate<FormData>(realm, realm, move(entry_list)));
}
FormData::FormData(JS::Realm& realm, Vector<FormDataEntry> entry_list)
: PlatformObject(realm)
, m_entry_list(move(entry_list))
{
}
FormData::~FormData() = default;
JS::ThrowCompletionOr<void> FormData::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::FormDataPrototype>(realm, "FormData"));
return {};
}
// https://xhr.spec.whatwg.org/#dom-formdata-append
WebIDL::ExceptionOr<void> FormData::append(String const& name, String const& value)
{
return append_impl(name, value);
}
// https://xhr.spec.whatwg.org/#dom-formdata-append-blob
WebIDL::ExceptionOr<void> FormData::append(String const& name, JS::NonnullGCPtr<FileAPI::Blob> const& blob_value, Optional<String> const& filename)
{
auto inner_filename = filename.has_value() ? filename.value() : Optional<String> {};
return append_impl(name, blob_value, inner_filename);
}
// https://xhr.spec.whatwg.org/#dom-formdata-append
// https://xhr.spec.whatwg.org/#dom-formdata-append-blob
WebIDL::ExceptionOr<void> FormData::append_impl(String const& name, Variant<JS::NonnullGCPtr<FileAPI::Blob>, String> const& value, Optional<String> const& filename)
{
auto& realm = this->realm();
auto& vm = realm.vm();
// 1. Let value be value if given; otherwise blobValue.
// 2. Let entry be the result of creating an entry with name, value, and filename if given.
auto entry = TRY(HTML::create_entry(realm, name, value, filename));
// 3. Append entry to this’s entry list.
TRY_OR_THROW_OOM(vm, m_entry_list.try_append(move(entry)));
return {};
}
// https://xhr.spec.whatwg.org/#dom-formdata-delete
void FormData::delete_(String const& name)
{
// The delete(name) method steps are to remove all entries whose name is name from this’s entry list.
m_entry_list.remove_all_matching([&name](FormDataEntry const& entry) {
return entry.name == name;
});
}
// https://xhr.spec.whatwg.org/#dom-formdata-get
Variant<JS::Handle<FileAPI::File>, String, Empty> FormData::get(String const& name)
{
// 1. If there is no entry whose name is name in this’s entry list, then return null.
auto entry_iterator = m_entry_list.find_if([&name](FormDataEntry const& entry) {
return entry.name == name;
});
if (entry_iterator.is_end())
return Empty {};
// 2. Return the value of the first entry whose name is name from this’s entry list.
return entry_iterator->value;
}
// https://xhr.spec.whatwg.org/#dom-formdata-getall
WebIDL::ExceptionOr<Vector<FormDataEntryValue>> FormData::get_all(String const& name)
{
// 1. If there is no entry whose name is name in this’s entry list, then return the empty list.
// 2. Return the values of all entries whose name is name, in order, from this’s entry list.
Vector<FormDataEntryValue> values;
for (auto const& entry : m_entry_list) {
if (entry.name == name)
TRY_OR_THROW_OOM(vm(), values.try_append(entry.value));
}
return values;
}
// https://xhr.spec.whatwg.org/#dom-formdata-has
bool FormData::has(String const& name)
{
// The has(name) method steps are to return true if there is an entry whose name is name in this’s entry list; otherwise false.
return !m_entry_list.find_if([&name](auto& entry) {
return entry.name == name;
})
.is_end();
}
// https://xhr.spec.whatwg.org/#dom-formdata-set
WebIDL::ExceptionOr<void> FormData::set(String const& name, String const& value)
{
return set_impl(name, value);
}
// https://xhr.spec.whatwg.org/#dom-formdata-set-blob
WebIDL::ExceptionOr<void> FormData::set(String const& name, JS::NonnullGCPtr<FileAPI::Blob> const& blob_value, Optional<String> const& filename)
{
auto inner_filename = filename.has_value() ? filename.value() : Optional<String> {};
return set_impl(name, blob_value, inner_filename);
}
// https://xhr.spec.whatwg.org/#dom-formdata-set
// https://xhr.spec.whatwg.org/#dom-formdata-set-blob
WebIDL::ExceptionOr<void> FormData::set_impl(String const& name, Variant<JS::NonnullGCPtr<FileAPI::Blob>, String> const& value, Optional<String> const& filename)
{
auto& realm = this->realm();
auto& vm = realm.vm();
// 1. Let value be value if given; otherwise blobValue.
// 2. Let entry be the result of creating an entry with name, value, and filename if given.
auto entry = TRY(HTML::create_entry(realm, name, value, filename));
auto existing = m_entry_list.find_if([&name](auto& entry) {
return entry.name == name;
});
// 3. If there are entries in this’s entry list whose name is name, then replace the first such entry with entry and remove the others.
if (!existing.is_end()) {
existing->value = entry.value;
m_entry_list.remove_all_matching([&name, &existing](auto& entry) {
return &entry != &*existing && entry.name == name;
});
}
// 4. Otherwise, append entry to this’s entry list.
else {
TRY_OR_THROW_OOM(vm, m_entry_list.try_append(move(entry)));
}
return {};
}
JS::ThrowCompletionOr<void> FormData::for_each(ForEachCallback callback)
{
for (auto i = 0u; i < m_entry_list.size(); ++i) {
auto& entry = m_entry_list[i];
TRY(callback(entry.name, entry.value));
}
return {};
}
}
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