ladybird/Userland/Libraries/LibWeb/CSS/StyleSheetList.cpp
Andreas Kling a13079f757 LibWeb: Invalidate style after CSSStyleSheet.{insert,remove}Rule()
When rules are inserted or removed via the CSSOM API, we now invalidate
document style to ensure that any changes made are reflected.

1% progression on ACID3. :^)
2022-03-09 19:58:14 +01:00

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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/StyleSheetList.h>
#include <LibWeb/DOM/Document.h>
namespace Web::CSS {
void StyleSheetList::add_sheet(NonnullRefPtr<CSSStyleSheet> sheet)
{
VERIFY(!m_sheets.contains_slow(sheet));
sheet->set_style_sheet_list({}, this);
m_sheets.append(move(sheet));
++m_generation;
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 == &sheet; });
++m_generation;
m_document.invalidate_style();
}
StyleSheetList::StyleSheetList(DOM::Document& document)
: m_document(document)
{
}
// 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 objects 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();
}
}