5608bc4eaf
HTMLObjectElement will need to be both a FormAssociatedElement and a
BrowsingContextContainer. Currently, both of these classes inherit from
HTMLElement. This can work in C++, but is generally frowned upon, and
doesn't play particularly well with the rest of LibWeb.
Instead, we can essentially revert commit 3bb5c62 to remove HTMLElement
from FormAssociatedElement's hierarchy. This means that objects such as
HTMLObjectElement individually inherit from FormAssociatedElement and
HTMLElement now.
Some caveats are:
* FormAssociatedElement still needs to know when the HTMLElement is
inserted into and removed from the DOM. This hook is automatically
injected via a macro now, while still allowing classes like
HTMLInputElement to also know when the element is inserted.
* Casting from a DOM::Element to a FormAssociatedElement is now a
sideways cast, rather than directly following an inheritance chain.
This means static_cast cannot be used here; but we can safely use
dynamic_cast since the only 2 instances of this already use RTTI to
verify the cast.
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibCore/Forward.h>
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#include <LibGfx/Forward.h>
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#include <LibWeb/HTML/FormAssociatedElement.h>
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#include <LibWeb/HTML/HTMLElement.h>
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#include <LibWeb/Loader/ImageLoader.h>
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namespace Web::HTML {
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class HTMLObjectElement final
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: public HTMLElement
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, public FormAssociatedElement
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, public ResourceClient {
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FORM_ASSOCIATED_ELEMENT(HTMLElement, HTMLObjectElement)
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public:
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using WrapperType = Bindings::HTMLObjectElementWrapper;
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HTMLObjectElement(DOM::Document&, DOM::QualifiedName);
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virtual ~HTMLObjectElement() override;
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virtual void parse_attribute(const FlyString& name, const String& value) override;
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String data() const;
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void set_data(String const& data) { set_attribute(HTML::AttributeNames::data, data); }
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String type() const { return attribute(HTML::AttributeNames::type); }
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// ^FormAssociatedElement
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// https://html.spec.whatwg.org/multipage/forms.html#category-listed
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virtual bool is_listed() const override { return true; }
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private:
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virtual RefPtr<Layout::Node> create_layout_node(NonnullRefPtr<CSS::StyleProperties>) override;
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void queue_element_task_to_run_object_representation_steps();
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void run_object_representation_handler_steps(StringView resource_type);
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void run_object_representation_completed_steps();
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void run_object_representation_fallback_steps();
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void convert_resource_to_image();
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void update_layout_and_child_objects();
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// ^ResourceClient
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virtual void resource_did_load() override;
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virtual void resource_did_fail() override;
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Optional<ImageLoader> m_image_loader;
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bool m_should_show_fallback_content { false };
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};
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}
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