1/* 2 * Copyright (C) 2009 Apple Inc. All right reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "JSCSSRuleList.h" 28 29#include "CSSRule.h" 30#include "CSSRuleList.h" 31#include "CSSStyleSheet.h" 32#include "JSCSSRuleCustom.h" 33#include "JSStyleSheetCustom.h" 34 35using namespace JSC; 36 37namespace WebCore { 38 39bool JSCSSRuleListOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor) 40{ 41 JSCSSRuleList* jsCSSRuleList = jsCast<JSCSSRuleList*>(handle.slot()->asCell()); 42 if (!jsCSSRuleList->hasCustomProperties()) 43 return false; 44 if (CSSStyleSheet* styleSheet = jsCSSRuleList->impl().styleSheet()) 45 return visitor.containsOpaqueRoot(root(styleSheet)); 46 if (CSSRule* cssRule = jsCSSRuleList->impl().item(0)) 47 return visitor.containsOpaqueRoot(root(cssRule)); 48 return false; 49} 50 51} 52