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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/FlyString.h>
30#include <AK/String.h>
31#include <LibWeb/DOM/ParentNode.h>
32#include <LibWeb/Layout/LayoutNode.h>
33
34namespace Web {
35
36class LayoutNodeWithStyle;
37
38class Attribute {
39public:
40 Attribute(const FlyString& name, const String& value)
41 : m_name(name)
42 , m_value(value)
43 {
44 }
45
46 const FlyString& name() const { return m_name; }
47 const String& value() const { return m_value; }
48
49 void set_value(const String& value) { m_value = value; }
50
51private:
52 FlyString m_name;
53 String m_value;
54};
55
56class Element : public ParentNode {
57public:
58 using WrapperType = Bindings::ElementWrapper;
59
60 Element(Document&, const FlyString& tag_name);
61 virtual ~Element() override;
62
63 virtual FlyString tag_name() const final { return m_tag_name; }
64
65 bool has_attribute(const FlyString& name) const { return !attribute(name).is_null(); }
66 String attribute(const FlyString& name) const;
67 void set_attribute(const FlyString& name, const String& value);
68
69 void set_attributes(Vector<Attribute>&&);
70
71 template<typename Callback>
72 void for_each_attribute(Callback callback) const
73 {
74 for (auto& attribute : m_attributes)
75 callback(attribute.name(), attribute.value());
76 }
77
78 bool has_class(const StringView&) const;
79
80 virtual void apply_presentational_hints(StyleProperties&) const {}
81 virtual void parse_attribute(const FlyString& name, const String& value);
82
83 void recompute_style();
84
85 LayoutNodeWithStyle* layout_node() { return static_cast<LayoutNodeWithStyle*>(Node::layout_node()); }
86 const LayoutNodeWithStyle* layout_node() const { return static_cast<const LayoutNodeWithStyle*>(Node::layout_node()); }
87
88 String name() const { return attribute("name"); }
89
90 const StyleProperties* resolved_style() const { return m_resolved_style.ptr(); }
91 NonnullRefPtr<StyleProperties> computed_style();
92
93 String inner_html() const;
94 void set_inner_html(StringView);
95
96private:
97 RefPtr<LayoutNode> create_layout_node(const StyleProperties* parent_style) const override;
98
99 Attribute* find_attribute(const FlyString& name);
100 const Attribute* find_attribute(const FlyString& name) const;
101
102 FlyString m_tag_name;
103 Vector<Attribute> m_attributes;
104
105 RefPtr<StyleProperties> m_resolved_style;
106};
107
108template<>
109inline bool is<Element>(const Node& node)
110{
111 return node.is_element();
112}
113
114}