ladybird/Userland/Libraries/LibWeb/Bindings/ImageConstructor.cpp
Linus Groh 5832de62fe LibJS: Convert NativeFunction::{call,construct}() to ThrowCompletionOr
Both at the same time because many of them call construct() in call()
and I'm not keen on adding a bunch of temporary plumbing to turn
exceptions into throw completions.
Also changes the return value of construct() to Object* instead of Value
as it always needs to return an object; allowing an arbitrary Value is a
massive foot gun.
2021-10-21 09:02:23 +01:00

61 lines
2 KiB
C++

/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/HTMLImageElementPrototype.h>
#include <LibWeb/Bindings/HTMLImageElementWrapper.h>
#include <LibWeb/Bindings/ImageConstructor.h>
#include <LibWeb/Bindings/NodeWrapperFactory.h>
#include <LibWeb/DOM/ElementFactory.h>
#include <LibWeb/DOM/Window.h>
#include <LibWeb/Namespace.h>
namespace Web::Bindings {
ImageConstructor::ImageConstructor(JS::GlobalObject& global_object)
: NativeFunction(*global_object.function_prototype())
{
}
void ImageConstructor::initialize(JS::GlobalObject& global_object)
{
auto& vm = this->vm();
auto& window = static_cast<WindowObject&>(global_object);
NativeFunction::initialize(global_object);
define_direct_property(vm.names.prototype, &window.ensure_web_prototype<HTMLImageElementPrototype>("HTMLImageElement"), 0);
define_direct_property(vm.names.length, JS::Value(0), JS::Attribute::Configurable);
}
ImageConstructor::~ImageConstructor()
{
}
JS::ThrowCompletionOr<JS::Value> ImageConstructor::call()
{
return vm().throw_completion<JS::TypeError>(global_object(), JS::ErrorType::ConstructorWithoutNew, "Image");
}
// https://html.spec.whatwg.org/multipage/embedded-content.html#dom-image
JS::ThrowCompletionOr<JS::Object*> ImageConstructor::construct(FunctionObject&)
{
auto& window = static_cast<WindowObject&>(global_object());
auto& document = window.impl().associated_document();
auto image_element = DOM::create_element(document, HTML::TagNames::img, Namespace::HTML);
if (vm().argument_count() > 0) {
u32 width = TRY(vm().argument(0).to_u32(global_object()));
image_element->set_attribute(HTML::AttributeNames::width, String::formatted("{}", width));
}
if (vm().argument_count() > 1) {
u32 height = TRY(vm().argument(1).to_u32(global_object()));
image_element->set_attribute(HTML::AttributeNames::height, String::formatted("{}", height));
}
return wrap(global_object(), image_element);
}
}