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https://github.com/LadybirdBrowser/ladybird
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98b13da3b4
AdoptedStyleSheets.cpp still handled CSS-side fallout from adopted sheet list mutations directly. Move sheet attachment and media-query setup to a CSS invalidation helper, along with rule-cache invalidation. The observable array callbacks continue to validate JS values and same-document construction rules. The helper now owns the CSS work for when a constructed stylesheet becomes visible to, or is removed from, a Document or ShadowRoot.
44 lines
2.1 KiB
C++
44 lines
2.1 KiB
C++
/*
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* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/CSS/CSSStyleSheet.h>
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#include <LibWeb/CSS/Invalidation/AdoptedStyleSheetInvalidator.h>
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#include <LibWeb/DOM/AdoptedStyleSheets.h>
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#include <LibWeb/DOM/Document.h>
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namespace Web::DOM {
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GC::Ref<WebIDL::ObservableArray> create_adopted_style_sheets_list(Node& document_or_shadow_root)
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{
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auto adopted_style_sheets = WebIDL::ObservableArray::create(document_or_shadow_root.realm());
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adopted_style_sheets->set_on_set_an_indexed_value_callback([&document_or_shadow_root](JS::Value& value) -> WebIDL::ExceptionOr<void> {
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auto& vm = document_or_shadow_root.vm();
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auto style_sheet = value.as_if<CSS::CSSStyleSheet>();
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if (!style_sheet)
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return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "CSSStyleSheet");
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// The set an indexed value algorithm for adoptedStyleSheets, given value and index, is the following:
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// 1. If value’s constructed flag is not set, or its constructor document is not equal to this
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// DocumentOrShadowRoot's node document, throw a "NotAllowedError" DOMException.
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if (!style_sheet->constructed())
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return WebIDL::NotAllowedError::create(document_or_shadow_root.realm(), "StyleSheet's constructed flag is not set."_utf16);
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if (!style_sheet->constructed() || style_sheet->constructor_document().ptr() != &document_or_shadow_root.document())
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return WebIDL::NotAllowedError::create(document_or_shadow_root.realm(), "Sharing a StyleSheet between documents is not allowed."_utf16);
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CSS::Invalidation::invalidate_style_after_adopting_style_sheet(document_or_shadow_root, *style_sheet);
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return {};
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});
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adopted_style_sheets->set_on_delete_an_indexed_value_callback([&document_or_shadow_root](JS::Value value) -> WebIDL::ExceptionOr<void> {
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auto& style_sheet = value.as<CSS::CSSStyleSheet>();
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CSS::Invalidation::invalidate_style_after_removing_adopted_style_sheet(document_or_shadow_root, style_sheet);
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return {};
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});
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return adopted_style_sheets;
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}
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}
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