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Serenity Operating System
1/*
2 * Copyright (c) 2020-2022, the SerenityOS developers.
3 * Copyright (c) 2022, MacDue <macdue@dueutil.tech>
4 *
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8#include <LibWeb/DOM/Document.h>
9#include <LibWeb/DOM/ShadowRoot.h>
10#include <LibWeb/HTML/HTMLProgressElement.h>
11#include <LibWeb/Layout/BlockContainer.h>
12#include <LibWeb/Layout/Node.h>
13#include <LibWeb/Layout/Progress.h>
14
15namespace Web::HTML {
16
17HTMLProgressElement::HTMLProgressElement(DOM::Document& document, DOM::QualifiedName qualified_name)
18 : HTMLElement(document, move(qualified_name))
19{
20}
21
22HTMLProgressElement::~HTMLProgressElement() = default;
23
24JS::ThrowCompletionOr<void> HTMLProgressElement::initialize(JS::Realm& realm)
25{
26 MUST_OR_THROW_OOM(Base::initialize(realm));
27 set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLProgressElementPrototype>(realm, "HTMLProgressElement"));
28
29 return {};
30}
31
32JS::GCPtr<Layout::Node> HTMLProgressElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
33{
34 if (style->appearance().value_or(CSS::Appearance::Auto) == CSS::Appearance::None)
35 return HTMLElement::create_layout_node(style);
36 return heap().allocate_without_realm<Layout::Progress>(document(), *this, move(style));
37}
38
39bool HTMLProgressElement::using_system_appearance() const
40{
41 if (layout_node())
42 return is<Layout::Progress>(*layout_node());
43 return false;
44}
45
46void HTMLProgressElement::progress_position_updated()
47{
48 if (using_system_appearance())
49 layout_node()->set_needs_display();
50 else
51 document().invalidate_layout();
52}
53
54double HTMLProgressElement::value() const
55{
56 auto const& value_characters = attribute(HTML::AttributeNames::value);
57 if (value_characters == nullptr)
58 return 0;
59
60 // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#rules-for-parsing-floating-point-number-values
61 // 6. Skip ASCII whitespace within input given position.
62 auto maybe_double = value_characters.to_double(AK::TrimWhitespace::Yes);
63 if (!maybe_double.has_value())
64 return 0;
65 if (!isfinite(maybe_double.value()) || maybe_double.value() < 0)
66 return 0;
67
68 return min(maybe_double.value(), max());
69}
70
71void HTMLProgressElement::set_value(double value)
72{
73 if (value < 0)
74 return;
75
76 MUST(set_attribute(HTML::AttributeNames::value, DeprecatedString::number(value)));
77 progress_position_updated();
78}
79
80double HTMLProgressElement::max() const
81{
82 auto const& max_characters = attribute(HTML::AttributeNames::max);
83 if (max_characters == nullptr)
84 return 1;
85
86 // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#rules-for-parsing-floating-point-number-values
87 // 6. Skip ASCII whitespace within input given position.
88 auto double_or_none = max_characters.to_double(AK::TrimWhitespace::Yes);
89 if (!double_or_none.has_value())
90 return 1;
91 if (!isfinite(double_or_none.value()) || double_or_none.value() <= 0)
92 return 1;
93
94 return double_or_none.value();
95}
96
97void HTMLProgressElement::set_max(double value)
98{
99 if (value <= 0)
100 return;
101
102 MUST(set_attribute(HTML::AttributeNames::max, DeprecatedString::number(value)));
103 progress_position_updated();
104}
105
106double HTMLProgressElement::position() const
107{
108 if (!is_determinate())
109 return -1;
110
111 return value() / max();
112}
113
114}