3cc0c477db
This patch implements a simple <object> element with fallback content. If the URL from the data attribute fails to load (including 404), we render the DOM tree inside the <object> as fallback content. This works by generating a different layout tree for the <object> depending on the state and success of the data load. Since we cannot currently do incremental layout tree updates, we have to force a complete layout tree rebuild when the resource load finishes/fails.
103 lines
3.6 KiB
C++
103 lines
3.6 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/AttributeNames.h>
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#include <LibWeb/DOM/ParentNode.h>
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#include <LibWeb/DOM/TagNames.h>
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#include <LibWeb/Layout/LayoutNode.h>
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namespace Web {
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class LayoutNodeWithStyle;
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class Element : public ParentNode {
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public:
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using WrapperType = Bindings::ElementWrapper;
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Element(Document&, const FlyString& tag_name);
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virtual ~Element() override;
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virtual FlyString tag_name() const final { return m_tag_name; }
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bool has_attribute(const FlyString& name) const { return !attribute(name).is_null(); }
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String attribute(const FlyString& name) const;
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void set_attribute(const FlyString& name, const String& value);
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void set_attributes(Vector<Attribute>&&);
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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(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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LayoutNodeWithStyle* layout_node() { return static_cast<LayoutNodeWithStyle*>(Node::layout_node()); }
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const LayoutNodeWithStyle* layout_node() const { return static_cast<const LayoutNodeWithStyle*>(Node::layout_node()); }
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String name() const { return attribute(HTML::AttributeNames::name); }
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const StyleProperties* resolved_style() const { return m_resolved_style.ptr(); }
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NonnullRefPtr<StyleProperties> computed_style();
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String inner_html() const;
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void set_inner_html(StringView);
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protected:
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RefPtr<LayoutNode> create_layout_node(const StyleProperties* parent_style) const 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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FlyString m_tag_name;
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Vector<Attribute> m_attributes;
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RefPtr<StyleProperties> m_resolved_style;
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Vector<FlyString> m_classes;
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};
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template<>
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inline bool is<Element>(const Node& node)
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{
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return node.is_element();
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}
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}
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