2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
102 lines
2.8 KiB
C++
102 lines
2.8 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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StyleSheetList* StyleSheetList::create(DOM::Document& document)
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{
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auto& realm = document.realm();
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return 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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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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