524ec95bcd
This ensures that style is applied consistently, even if the document has external CSS resources that don't always arrive in the same order.
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
|
||
* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <AK/QuickSort.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.window().realm();
|
||
return realm.heap().allocate<StyleSheetList>(realm, document);
|
||
}
|
||
|
||
StyleSheetList::StyleSheetList(DOM::Document& document)
|
||
: Bindings::LegacyPlatformObject(document.window().cached_web_prototype("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());
|
||
});
|
||
}
|
||
|
||
}
|