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LibWeb: Add serialization code for CSS{Media,Supports}Rule

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The `CSSMediaRule::serialized()` code is to spec. The
`CSSSupportsRule::serialized()` code has no spec right now, but I'm
fairly confident it will be almost identical to media's, so I copied
that for now.
This commit is contained in:
Sam Atkins 2021-10-15 16:42:26 +01:00 • committed by Linus Groh
parent 46bba44f8b
commit 0f88a47e58
6 changed files with 53 additions and 8 deletions
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26
Userland/Libraries/LibWeb/CSS/CSSMediaRule.cpp
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@ -28,4 +28,30 @@ void CSSMediaRule::set_condition_text(String text)
m_media->set_media_text(text);
}
// https://www.w3.org/TR/cssom-1/#serialize-a-css-rule
String CSSMediaRule::serialized() const
{
// The result of concatenating the following:
StringBuilder builder;
// 1. The string "@media", followed by a single SPACE (U+0020).
builder.append("@media ");
// 2. The result of performing serialize a media query list on rule’s media query list.
builder.append(condition_text());
// 3. A single SPACE (U+0020), followed by the string "{", i.e., LEFT CURLY BRACKET (U+007B), followed by a newline.
builder.append(" {\n");
// 4. The result of performing serialize a CSS rule on each rule in the rule’s cssRules list, separated by a newline and indented by two spaces.
for (size_t i = 0; i < css_rules().length(); i++) {
auto rule = css_rules().item(i);
if (i != 0)
builder.append("\n");
builder.append(" ");
builder.append(rule->css_text());
}
// 5. A newline, followed by the string "}", i.e., RIGHT CURLY BRACKET (U+007D)
builder.append("\n}");
return builder.to_string();
}
}