blob: beea08611fffd8aaab3694f92ab40740cc772d9a [file] [log] [blame]
/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "core/css/CSSStyleRule.h"
#include "core/css/CSSPropertyValueSet.h"
#include "core/css/CSSSelector.h"
#include "core/css/CSSStyleSheet.h"
#include "core/css/StyleRule.h"
#include "core/css/StyleRuleCSSStyleDeclaration.h"
#include "core/css/cssom/DeclaredStylePropertyMap.h"
#include "core/css/parser/CSSParser.h"
#include "core/dom/ExecutionContext.h"
#include "platform/wtf/text/StringBuilder.h"
namespace blink {
using SelectorTextCache =
PersistentHeapHashMap<WeakMember<const CSSStyleRule>, String>;
static SelectorTextCache& GetSelectorTextCache() {
DEFINE_STATIC_LOCAL(SelectorTextCache, cache, ());
return cache;
}
CSSStyleRule::CSSStyleRule(StyleRule* style_rule, CSSStyleSheet* parent)
: CSSRule(parent),
style_rule_(style_rule),
attribute_style_map_(new DeclaredStylePropertyMap(this)) {}
CSSStyleRule::~CSSStyleRule() = default;
CSSStyleDeclaration* CSSStyleRule::style() const {
if (!properties_cssom_wrapper_) {
properties_cssom_wrapper_ = StyleRuleCSSStyleDeclaration::Create(
style_rule_->MutableProperties(), const_cast<CSSStyleRule*>(this));
}
return properties_cssom_wrapper_.Get();
}
String CSSStyleRule::selectorText() const {
if (HasCachedSelectorText()) {
DCHECK(GetSelectorTextCache().Contains(this));
return GetSelectorTextCache().at(this);
}
DCHECK(!GetSelectorTextCache().Contains(this));
String text = style_rule_->SelectorList().SelectorsText();
GetSelectorTextCache().Set(this, text);
SetHasCachedSelectorText(true);
return text;
}
void CSSStyleRule::setSelectorText(const ExecutionContext* execution_context,
const String& selector_text) {
const CSSParserContext* context = CSSParserContext::Create(
ParserContext(execution_context->GetSecureContextMode()), nullptr);
CSSSelectorList selector_list = CSSParser::ParseSelector(
context, parentStyleSheet() ? parentStyleSheet()->Contents() : nullptr,
selector_text);
if (!selector_list.IsValid())
return;
CSSStyleSheet::RuleMutationScope mutation_scope(this);
style_rule_->WrapperAdoptSelectorList(std::move(selector_list));
if (HasCachedSelectorText()) {
GetSelectorTextCache().erase(this);
SetHasCachedSelectorText(false);
}
}
String CSSStyleRule::cssText() const {
StringBuilder result;
result.Append(selectorText());
result.Append(" { ");
String decls = style_rule_->Properties().AsText();
result.Append(decls);
if (!decls.IsEmpty())
result.Append(' ');
result.Append('}');
return result.ToString();
}
void CSSStyleRule::Reattach(StyleRuleBase* rule) {
DCHECK(rule);
style_rule_ = ToStyleRule(rule);
if (properties_cssom_wrapper_)
properties_cssom_wrapper_->Reattach(style_rule_->MutableProperties());
}
void CSSStyleRule::Trace(blink::Visitor* visitor) {
visitor->Trace(style_rule_);
visitor->Trace(properties_cssom_wrapper_);
visitor->Trace(attribute_style_map_);
CSSRule::Trace(visitor);
}
} // namespace blink