54f58e2662
With the GC heap conversion, the functionality of legacy platform objects was broken. This is because the generated implementation of one of them was used for all of them, removing functionality such as deletion. This re-adds all functionality, where questions such as "does the object support indexed properties?" is instead answered by virtual functions instead of by the IDL generator checking the presence of certain keywords/attributes.
102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/QuickSort.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/StyleSheetListPrototype.h>
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#include <LibWeb/CSS/StyleSheetList.h>
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#include <LibWeb/DOM/Document.h>
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namespace Web::CSS {
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void StyleSheetList::add_sheet(CSSStyleSheet& sheet)
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{
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sheet.set_style_sheet_list({}, this);
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m_sheets.append(sheet);
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sort_sheets();
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if (sheet.rules().length() == 0) {
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// NOTE: If the added sheet has no rules, we don't have to invalidate anything.
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return;
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}
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m_document.style_computer().invalidate_rule_cache();
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m_document.style_computer().load_fonts_from_sheet(sheet);
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m_document.invalidate_style();
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}
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void StyleSheetList::remove_sheet(CSSStyleSheet& sheet)
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{
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sheet.set_style_sheet_list({}, nullptr);
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m_sheets.remove_first_matching([&](auto& entry) { return entry.ptr() == &sheet; });
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if (sheet.rules().length() == 0) {
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// NOTE: If the removed sheet had no rules, we don't have to invalidate anything.
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return;
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}
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sort_sheets();
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m_document.style_computer().invalidate_rule_cache();
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m_document.invalidate_style();
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<StyleSheetList>> StyleSheetList::create(DOM::Document& document)
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{
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auto& realm = document.realm();
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return MUST_OR_THROW_OOM(realm.heap().allocate<StyleSheetList>(realm, document));
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}
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StyleSheetList::StyleSheetList(DOM::Document& document)
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: Bindings::LegacyPlatformObject(document.realm())
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, m_document(document)
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{
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}
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JS::ThrowCompletionOr<void> StyleSheetList::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::StyleSheetListPrototype>(realm, "StyleSheetList"));
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return {};
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}
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void StyleSheetList::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_document);
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for (auto sheet : m_sheets)
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visitor.visit(sheet.ptr());
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}
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// https://www.w3.org/TR/cssom/#ref-for-dfn-supported-property-indices%E2%91%A1
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bool StyleSheetList::is_supported_property_index(u32 index) const
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{
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// The object’s supported property indices are the numbers in the range zero to one less than the number of CSS style sheets represented by the collection.
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// If there are no such CSS style sheets, then there are no supported property indices.
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if (m_sheets.is_empty())
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return false;
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return index < m_sheets.size();
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}
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WebIDL::ExceptionOr<JS::Value> StyleSheetList::item_value(size_t index) const
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{
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if (index >= m_sheets.size())
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return JS::js_undefined();
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return m_sheets[index].ptr();
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}
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void StyleSheetList::sort_sheets()
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{
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quick_sort(m_sheets, [](JS::NonnullGCPtr<StyleSheet> a, JS::NonnullGCPtr<StyleSheet> b) {
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return a->owner_node()->is_before(*b->owner_node());
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});
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}
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}
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