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/*
* Copyright (c) 2019-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/CSSStyleSheet.h>
#include <LibWeb/CSS/Parser/Parser.h>
#include <LibWeb/CSS/StyleSheetList.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/ExceptionOr.h>
namespace Web::CSS {
CSSStyleSheet* CSSStyleSheet::create(HTML::Window& window_object, CSSRuleList& rules, Optional<AK::URL> location)
{
return window_object.heap().allocate<CSSStyleSheet>(window_object.realm(), window_object, rules, move(location));
}
CSSStyleSheet::CSSStyleSheet(HTML::Window& window_object, CSSRuleList& rules, Optional<AK::URL> location)
: StyleSheet(window_object)
, m_rules(&rules)
{
set_prototype(&window_object.cached_web_prototype("CSSStyleSheet"));
if (location.has_value())
set_location(location->to_string());
for (auto& rule : *m_rules)
rule.set_parent_style_sheet(this);
}
void CSSStyleSheet::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_style_sheet_list.ptr());
visitor.visit(m_rules);
visitor.visit(m_owner_css_rule);
}
// https://www.w3.org/TR/cssom/#dom-cssstylesheet-insertrule
DOM::ExceptionOr<unsigned> CSSStyleSheet::insert_rule(StringView rule, unsigned index)
{
// FIXME: 1. If the origin-clean flag is unset, throw a SecurityError exception.
// FIXME: 2. If the disallow modification flag is set, throw a NotAllowedError DOMException.
// 3. Let parsed rule be the return value of invoking parse a rule with rule.
auto parsed_rule = parse_css_rule(CSS::Parser::ParsingContext {}, rule);
// 4. If parsed rule is a syntax error, return parsed rule.
if (!parsed_rule)
return DOM::SyntaxError::create(global_object(), "Unable to parse CSS rule.");
// FIXME: 5. If parsed rule is an @import rule, and the constructed flag is set, throw a SyntaxError DOMException.
// 6. Return the result of invoking insert a CSS rule rule in the CSS rules at index.
auto result = m_rules->insert_a_css_rule(parsed_rule, index);
if (!result.is_exception()) {
// NOTE: The spec doesn't say where to set the parent style sheet, so we'll do it here.
parsed_rule->set_parent_style_sheet(this);
if (m_style_sheet_list) {
m_style_sheet_list->document().style_computer().invalidate_rule_cache();
m_style_sheet_list->document().invalidate_style();
}
}
return result;
}
// https://www.w3.org/TR/cssom/#dom-cssstylesheet-deleterule
DOM::ExceptionOr<void> CSSStyleSheet::delete_rule(unsigned index)
{
// FIXME: 1. If the origin-clean flag is unset, throw a SecurityError exception.
// FIXME: 2. If the disallow modification flag is set, throw a NotAllowedError DOMException.
// 3. Remove a CSS rule in the CSS rules at index.
auto result = m_rules->remove_a_css_rule(index);
if (!result.is_exception()) {
if (m_style_sheet_list) {
m_style_sheet_list->document().style_computer().invalidate_rule_cache();
m_style_sheet_list->document().invalidate_style();
}
}
return result;
}
// https://www.w3.org/TR/cssom/#dom-cssstylesheet-removerule
DOM::ExceptionOr<void> CSSStyleSheet::remove_rule(unsigned index)
{
// The removeRule(index) method must run the same steps as deleteRule().
return delete_rule(index);
}
void CSSStyleSheet::for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const
{
m_rules->for_each_effective_style_rule(callback);
}
bool CSSStyleSheet::evaluate_media_queries(HTML::Window const& window)
{
return m_rules->evaluate_media_queries(window);
}
void CSSStyleSheet::set_style_sheet_list(Badge<StyleSheetList>, StyleSheetList* list)
{
m_style_sheet_list = list;
}
}
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