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LibWeb: Add styleSheets and adoptedStyleSheets attributes in ShadowRoot

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Co-authored-by: Simon Wanner <simon+git@skyrising.xyz>
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Aliaksandr Kalenik 2024-03-08 19:27:24 +01:00 • committed by Andreas Kling
parent f19c92d78e
commit 8ce8697a66
11 changed files with 138 additions and 37 deletions
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47
Userland/Libraries/LibWeb/DOM/AdoptedStyleSheets.cpp Normal file
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/*
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/StyleComputer.h>
#include <LibWeb/DOM/AdoptedStyleSheets.h>
#include <LibWeb/DOM/Document.h>
namespace Web::DOM {
JS::NonnullGCPtr<WebIDL::ObservableArray> create_adopted_style_sheets_list(Document& document)
{
auto adopted_style_sheets = WebIDL::ObservableArray::create(document.realm());
adopted_style_sheets->set_on_set_an_indexed_value_callback([&document](JS::Value& value) -> WebIDL::ExceptionOr<void> {
auto& vm = document.vm();
if (!value.is_object())
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "CSSStyleSheet");
auto& object = value.as_object();
if (!is<CSS::CSSStyleSheet>(object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "CSSStyleSheet");
auto& style_sheet = static_cast<CSS::CSSStyleSheet&>(object);
// The set an indexed value algorithm for adoptedStyleSheets, given value and index, is the following:
// 1. If value’s constructed flag is not set, or its constructor document is not equal to this
// DocumentOrShadowRoot's node document, throw a "NotAllowedError" DOMException.
if (!style_sheet.constructed())
return WebIDL::NotAllowedError::create(document.realm(), "StyleSheet's constructed flag is not set."_fly_string);
if (!style_sheet.constructed() || style_sheet.constructor_document().ptr() != &document)
return WebIDL::NotAllowedError::create(document.realm(), "Sharing a StyleSheet between documents is not allowed."_fly_string);
document.style_computer().load_fonts_from_sheet(style_sheet);
document.style_computer().invalidate_rule_cache();
document.invalidate_style();
return {};
});
adopted_style_sheets->set_on_delete_an_indexed_value_callback([&document]() -> WebIDL::ExceptionOr<void> {
document.style_computer().invalidate_rule_cache();
document.invalidate_style();
return {};
});
return adopted_style_sheets;
}
}