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/*
* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/QuickSort.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/StyleSheetListPrototype.h>
#include <LibWeb/CSS/StyleSheetList.h>
#include <LibWeb/DOM/Document.h>
namespace Web::CSS {
void StyleSheetList::add_sheet(CSSStyleSheet& sheet)
{
sheet.set_style_sheet_list({}, this);
m_sheets.append(sheet);
sort_sheets();
m_document.style_computer().invalidate_rule_cache();
m_document.style_computer().load_fonts_from_sheet(sheet);
m_document.invalidate_style();
}
void StyleSheetList::remove_sheet(CSSStyleSheet& sheet)
{
sheet.set_style_sheet_list({}, nullptr);
m_sheets.remove_first_matching([&](auto& entry) { return entry.ptr() == &sheet; });
sort_sheets();
m_document.style_computer().invalidate_rule_cache();
m_document.invalidate_style();
}
StyleSheetList* StyleSheetList::create(DOM::Document& document)
{
auto& realm = document.realm();
return realm.heap().allocate<StyleSheetList>(realm, document);
}
StyleSheetList::StyleSheetList(DOM::Document& document)
: Bindings::LegacyPlatformObject(Bindings::ensure_web_prototype<Bindings::StyleSheetListPrototype>(document.realm(), "StyleSheetList"))
, m_document(document)
{
}
void StyleSheetList::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_document);
for (auto sheet : m_sheets)
visitor.visit(sheet.ptr());
}
// https://www.w3.org/TR/cssom/#ref-for-dfn-supported-property-indices%E2%91%A1
bool StyleSheetList::is_supported_property_index(u32 index) const
{
// 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.
// If there are no such CSS style sheets, then there are no supported property indices.
if (m_sheets.is_empty())
return false;
return index < m_sheets.size();
}
JS::Value StyleSheetList::item_value(size_t index) const
{
if (index >= m_sheets.size())
return JS::js_undefined();
return m_sheets[index].ptr();
}
void StyleSheetList::sort_sheets()
{
quick_sort(m_sheets, [](JS::NonnullGCPtr<StyleSheet> a, JS::NonnullGCPtr<StyleSheet> b) {
return a->owner_node()->is_before(*b->owner_node());
});
}
}
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