1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/CSSStyleDeclaration.h>
#include <LibWeb/CSS/Parser/Parser.h>
#include <LibWeb/DOM/Element.h>
namespace Web::CSS {
PropertyOwningCSSStyleDeclaration::PropertyOwningCSSStyleDeclaration(Vector<StyleProperty> properties, HashMap<String, StyleProperty> custom_properties)
: m_properties(move(properties))
, m_custom_properties(move(custom_properties))
{
}
PropertyOwningCSSStyleDeclaration::~PropertyOwningCSSStyleDeclaration()
{
}
CSSStyleDeclaration::~CSSStyleDeclaration()
{
}
String PropertyOwningCSSStyleDeclaration::item(size_t index) const
{
if (index >= m_properties.size())
return {};
return CSS::string_from_property_id(m_properties[index].property_id);
}
ElementInlineCSSStyleDeclaration::ElementInlineCSSStyleDeclaration(DOM::Element& element)
: PropertyOwningCSSStyleDeclaration({}, {})
, m_element(element.make_weak_ptr<DOM::Element>())
{
}
ElementInlineCSSStyleDeclaration::ElementInlineCSSStyleDeclaration(DOM::Element& element, PropertyOwningCSSStyleDeclaration& declaration)
: PropertyOwningCSSStyleDeclaration(move(declaration.m_properties), move(declaration.m_custom_properties))
, m_element(element.make_weak_ptr<DOM::Element>())
{
}
ElementInlineCSSStyleDeclaration::~ElementInlineCSSStyleDeclaration()
{
}
size_t PropertyOwningCSSStyleDeclaration::length() const
{
return m_properties.size();
}
Optional<StyleProperty> PropertyOwningCSSStyleDeclaration::property(PropertyID property_id) const
{
for (auto& property : m_properties) {
if (property.property_id == property_id)
return property;
}
return {};
}
bool PropertyOwningCSSStyleDeclaration::set_property(PropertyID property_id, StringView css_text)
{
auto new_value = parse_css_value(CSS::ParsingContext {}, css_text, property_id);
if (!new_value) {
m_properties.remove_all_matching([&](auto& entry) {
return entry.property_id == property_id;
});
return false;
}
ScopeGuard style_invalidation_guard = [&] {
auto& declaration = verify_cast<CSS::ElementInlineCSSStyleDeclaration>(*this);
if (auto* element = declaration.element())
element->invalidate_style();
};
// FIXME: I don't think '!important' is being handled correctly here..
for (auto& property : m_properties) {
if (property.property_id == property_id) {
property.value = new_value.release_nonnull();
return true;
}
}
m_properties.append(CSS::StyleProperty {
.important = Important::No,
.property_id = property_id,
.value = new_value.release_nonnull(),
});
return true;
}
String CSSStyleDeclaration::get_property_value(StringView property_name) const
{
auto property_id = property_id_from_string(property_name);
if (property_id == CSS::PropertyID::Invalid)
return {};
auto maybe_property = property(property_id);
if (!maybe_property.has_value())
return {};
return maybe_property->value->to_string();
}
void CSSStyleDeclaration::set_property(StringView property_name, StringView css_text)
{
auto property_id = property_id_from_string(property_name);
if (property_id == CSS::PropertyID::Invalid)
return;
set_property(property_id, css_text);
}
String CSSStyleDeclaration::css_text() const
{
TODO();
return "";
}
void CSSStyleDeclaration::set_css_text(StringView)
{
TODO();
}
// https://www.w3.org/TR/cssom/#serialize-a-css-declaration
static String serialize_a_css_declaration(CSS::PropertyID property, String value, Important important)
{
StringBuilder builder;
// 1. Let s be the empty string.
// 2. Append property to s.
builder.append(string_from_property_id(property));
// 3. Append ": " (U+003A U+0020) to s.
builder.append(": "sv);
// 4. Append value to s.
builder.append(value);
// 5. If the important flag is set, append " !important" (U+0020 U+0021 U+0069 U+006D U+0070 U+006F U+0072 U+0074 U+0061 U+006E U+0074) to s.
if (important == Important::Yes)
builder.append(" !important"sv);
// 6. Append ";" (U+003B) to s.
builder.append(';');
// 7. Return s.
return builder.to_string();
}
// https://www.w3.org/TR/cssom/#serialize-a-css-declaration-block
String PropertyOwningCSSStyleDeclaration::serialized() const
{
// 1. Let list be an empty array.
Vector<String> list;
// 2. Let already serialized be an empty array.
HashTable<PropertyID> already_serialized;
// 3. Declaration loop: For each CSS declaration declaration in declaration block’s declarations, follow these substeps:
for (auto& declaration : m_properties) {
// 1. Let property be declaration’s property name.
auto property = declaration.property_id;
// 2. If property is in already serialized, continue with the steps labeled declaration loop.
if (already_serialized.contains(property))
continue;
// FIXME: 3. If property maps to one or more shorthand properties, let shorthands be an array of those shorthand properties, in preferred order.
// FIXME: 4. Shorthand loop: For each shorthand in shorthands, follow these substeps: ...
// 5. Let value be the result of invoking serialize a CSS value of declaration.
auto value = declaration.value->to_string();
// 6. Let serialized declaration be the result of invoking serialize a CSS declaration with property name property, value value,
// and the important flag set if declaration has its important flag set.
auto serialized_declaration = serialize_a_css_declaration(property, move(value), declaration.important);
// 7. Append serialized declaration to list.
list.append(move(serialized_declaration));
// 8. Append property to already serialized.
already_serialized.set(property);
}
// 4. Return list joined with " " (U+0020).
StringBuilder builder;
builder.join(' ', list);
return builder.to_string();
}
}
|
