fd441b954d
The generic is<T>() uses dynamic_cast which is fine in the majority of cases, but when one of them shows up in profiles, we can make it faster by answering the is-a question manually.
121 lines
4.6 KiB
C++
121 lines
4.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/String.h>
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#include <LibWeb/DOM/Attribute.h>
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#include <LibWeb/DOM/NonDocumentTypeChildNode.h>
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#include <LibWeb/DOM/ParentNode.h>
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#include <LibWeb/HTML/AttributeNames.h>
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#include <LibWeb/HTML/TagNames.h>
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#include <LibWeb/Layout/Node.h>
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#include <LibWeb/QualifiedName.h>
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namespace Web::DOM {
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class Element
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: public ParentNode
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, public NonDocumentTypeChildNode<Element> {
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public:
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using WrapperType = Bindings::ElementWrapper;
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Element(Document&, const QualifiedName& qualified_name);
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virtual ~Element() override;
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virtual FlyString node_name() const final { return m_qualified_name.local_name(); }
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const FlyString& local_name() const { return m_qualified_name.local_name(); }
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// NOTE: This is for the JS bindings
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const FlyString& tag_name() const { return local_name(); }
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const FlyString& namespace_() const { return m_qualified_name.namespace_(); }
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// NOTE: This is for the JS bindings
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const FlyString& namespace_uri() const { return namespace_(); }
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bool has_attribute(const FlyString& name) const { return !attribute(name).is_null(); }
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bool has_attributes() const { return !m_attributes.is_empty(); }
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String attribute(const FlyString& name) const;
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String get_attribute(const FlyString& name) const { return attribute(name); }
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void set_attribute(const FlyString& name, const String& value);
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void remove_attribute(const FlyString& name);
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template<typename Callback>
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void for_each_attribute(Callback callback) const
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{
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for (auto& attribute : m_attributes)
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callback(attribute.name(), attribute.value());
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}
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bool has_class(const FlyString&) const;
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const Vector<FlyString>& class_names() const { return m_classes; }
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virtual void apply_presentational_hints(CSS::StyleProperties&) const { }
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virtual void parse_attribute(const FlyString& name, const String& value);
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void recompute_style();
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Layout::NodeWithStyle* layout_node() { return static_cast<Layout::NodeWithStyle*>(Node::layout_node()); }
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const Layout::NodeWithStyle* layout_node() const { return static_cast<const Layout::NodeWithStyle*>(Node::layout_node()); }
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String name() const { return attribute(HTML::AttributeNames::name); }
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const CSS::StyleProperties* specified_css_values() const { return m_specified_css_values.ptr(); }
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NonnullRefPtr<CSS::StyleProperties> computed_style();
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const CSS::StyleDeclaration* inline_style() const { return m_inline_style; }
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// FIXME: innerHTML also appears on shadow roots. https://w3c.github.io/DOM-Parsing/#dom-innerhtml
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String inner_html() const;
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void set_inner_html(StringView);
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bool is_focused() const;
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virtual bool is_focusable() const { return false; }
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protected:
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RefPtr<Layout::Node> create_layout_node() override;
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private:
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Attribute* find_attribute(const FlyString& name);
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const Attribute* find_attribute(const FlyString& name) const;
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QualifiedName m_qualified_name;
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Vector<Attribute> m_attributes;
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RefPtr<CSS::StyleDeclaration> m_inline_style;
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RefPtr<CSS::StyleProperties> m_specified_css_values;
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Vector<FlyString> m_classes;
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};
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template<>
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inline bool Node::fast_is<Element>() const { return is_element(); }
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}
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