Remove the CSSOM.

sky/engine/core/css/CSSGroupingRule.cpp

-/*
- * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
- * Copyright (C) 2012 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above
- *    copyright notice, this list of conditions and the following
- *    disclaimer.
- * 2. Redistributions in binary form must reproduce the above
- *    copyright notice, this list of conditions and the following
- *    disclaimer in the documentation and/or other materials
- *    provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
- * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "sky/engine/config.h"
-#include "sky/engine/core/css/CSSGroupingRule.h"
-
-#include "sky/engine/bindings/core/v8/ExceptionState.h"
-#include "sky/engine/core/css/CSSRuleList.h"
-#include "sky/engine/core/css/CSSStyleSheet.h"
-#include "sky/engine/core/css/parser/BisonCSSParser.h"
-#include "sky/engine/core/dom/ExceptionCode.h"
-#include "sky/engine/core/frame/UseCounter.h"
-#include "sky/engine/wtf/text/StringBuilder.h"
-
-namespace blink {
-
-CSSGroupingRule::CSSGroupingRule(StyleRuleGroup* groupRule, CSSStyleSheet* parent)
-    : CSSRule(parent)
-    , m_groupRule(groupRule)
-    , m_childRuleCSSOMWrappers(groupRule->childRules().size())
-{
-}
-
-CSSGroupingRule::~CSSGroupingRule()
-{
-#if !ENABLE(OILPAN)
-    ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
-    for (unsigned i = 0; i < m_childRuleCSSOMWrappers.size(); ++i) {
-        if (m_childRuleCSSOMWrappers[i])
-            m_childRuleCSSOMWrappers[i]->setParentRule(0);
-    }
-#endif
-}
-
-unsigned CSSGroupingRule::insertRule(const String& ruleString, unsigned index, ExceptionState& exceptionState)
-{
-    ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
-
-    if (index > m_groupRule->childRules().size()) {
-        exceptionState.throwDOMException(IndexSizeError, "the index " + String::number(index) + " must be less than or equal to the length of the rule list.");
-        return 0;
-    }
-
-    CSSStyleSheet* styleSheet = parentStyleSheet();
-    CSSParserContext context(parserContext(), UseCounter::getFrom(styleSheet));
-    BisonCSSParser parser(context);
-    RefPtr<StyleRuleBase> newRule = parser.parseRule(styleSheet ? styleSheet->contents() : 0, ruleString);
-    if (!newRule) {
-        exceptionState.throwDOMException(SyntaxError, "the rule '" + ruleString + "' is invalid and cannot be parsed.");
-        return 0;
-    }
-
-    CSSStyleSheet::RuleMutationScope mutationScope(this);
-
-    m_groupRule->wrapperInsertRule(index, newRule);
-
-    m_childRuleCSSOMWrappers.insert(index, RefPtr<CSSRule>(nullptr));
-    return index;
-}
-
-void CSSGroupingRule::deleteRule(unsigned index, ExceptionState& exceptionState)
-{
-    ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
-
-    if (index >= m_groupRule->childRules().size()) {
-        exceptionState.throwDOMException(IndexSizeError, "the index " + String::number(index) + " is greated than the length of the rule list.");
-        return;
-    }
-
-    CSSStyleSheet::RuleMutationScope mutationScope(this);
-
-    m_groupRule->wrapperRemoveRule(index);
-
-    if (m_childRuleCSSOMWrappers[index])
-        m_childRuleCSSOMWrappers[index]->setParentRule(0);
-    m_childRuleCSSOMWrappers.remove(index);
-}
-
-void CSSGroupingRule::appendCSSTextForItems(StringBuilder& result) const
-{
-    unsigned size = length();
-    for (unsigned i = 0; i < size; ++i) {
-        result.appendLiteral("  ");
-        result.append(item(i)->cssText());
-        result.append('\n');
-    }
-}
-
-unsigned CSSGroupingRule::length() const
-{
-    return m_groupRule->childRules().size();
-}
-
-CSSRule* CSSGroupingRule::item(unsigned index) const
-{
-    if (index >= length())
-        return 0;
-    ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
-    RefPtr<CSSRule>& rule = m_childRuleCSSOMWrappers[index];
-    if (!rule)
-        rule = m_groupRule->childRules()[index]->createCSSOMWrapper(const_cast<CSSGroupingRule*>(this));
-    return rule.get();
-}
-
-CSSRuleList* CSSGroupingRule::cssRules() const
-{
-    if (!m_ruleListCSSOMWrapper)
-        m_ruleListCSSOMWrapper = LiveCSSRuleList<CSSGroupingRule>::create(const_cast<CSSGroupingRule*>(this));
-    return m_ruleListCSSOMWrapper.get();
-}
-
-void CSSGroupingRule::reattach(StyleRuleBase* rule)
-{
-    ASSERT(rule);
-    m_groupRule = static_cast<StyleRuleGroup*>(rule);
-    for (unsigned i = 0; i < m_childRuleCSSOMWrappers.size(); ++i) {
-        if (m_childRuleCSSOMWrappers[i])
-            m_childRuleCSSOMWrappers[i]->reattach(m_groupRule->childRules()[i].get());
-    }
-}
-
-} // namespace blink