1/* 2 * Copyright (C) 2013 Adobe Systems Incorporated. All rights 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 * 8 * 1. Redistributions of source code must retain the above 9 * copyright notice, this list of conditions and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials 14 * provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include "config.h" 31#include "WebKitCSSFilterRule.h" 32 33#if ENABLE(CSS_SHADERS) 34 35#include "PropertySetCSSStyleDeclaration.h" 36#include "StylePropertySet.h" 37#include "StyleRule.h" 38#include <wtf/text/StringBuilder.h> 39 40namespace WebCore { 41 42WebKitCSSFilterRule::WebKitCSSFilterRule(StyleRuleFilter* filterRule, CSSStyleSheet* parent) 43 : CSSRule(parent) 44 , m_filterRule(filterRule) 45{ 46} 47 48WebKitCSSFilterRule::~WebKitCSSFilterRule() 49{ 50 if (m_propertiesCSSOMWrapper) 51 m_propertiesCSSOMWrapper->clearParentRule(); 52} 53 54CSSStyleDeclaration* WebKitCSSFilterRule::style() 55{ 56 if (!m_propertiesCSSOMWrapper) 57 m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_filterRule->mutableProperties(), this); 58 return m_propertiesCSSOMWrapper.get(); 59} 60 61String WebKitCSSFilterRule::cssText() const 62{ 63 StringBuilder result; 64 result.appendLiteral("@-webkit-filter "); 65 66 String filterName = m_filterRule->filterName(); 67 result.append(filterName); 68 result.appendLiteral(" { "); 69 70 String descs = m_filterRule->properties()->asText(); 71 result.append(descs); 72 if (!descs.isEmpty()) 73 result.append(' '); 74 result.append('}'); 75 76 return result.toString(); 77} 78 79void WebKitCSSFilterRule::reattach(StyleRuleBase* rule) 80{ 81 ASSERT(rule); 82 ASSERT_WITH_SECURITY_IMPLICATION(rule->isFilterRule()); 83 m_filterRule = static_cast<StyleRuleFilter*>(rule); 84 if (m_propertiesCSSOMWrapper) 85 m_propertiesCSSOMWrapper->reattach(m_filterRule->mutableProperties()); 86} 87 88} // namespace WebCore 89 90#endif // ENABLE(CSS_SHADERS) 91