Home | History | Annotate | Download | only in css 
      1 /*
      2  * Copyright (C) 2012 Intel Corporation. All rights reserved.
      3  * Copyright (C) 2012 Apple Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * 1. Redistributions of source code must retain the above
     10  *    copyright notice, this list of conditions and the following
     11  *    disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above
     13  *    copyright notice, this list of conditions and the following
     14  *    disclaimer in the documentation and/or other materials
     15  *    provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AS IS AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
     21  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     26  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     27  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "core/css/CSSViewportRule.h"
     33 
     34 #include "core/css/PropertySetCSSStyleDeclaration.h"
     35 #include "core/css/StylePropertySet.h"
     36 #include "core/css/StyleRule.h"
     37 #include "wtf/text/StringBuilder.h"
     38 
     39 namespace WebCore {
     40 
     41 CSSViewportRule::CSSViewportRule(StyleRuleViewport* viewportRule, CSSStyleSheet* sheet)
     42     : CSSRule(sheet)
     43     , m_viewportRule(viewportRule)
     44 {
     45 }
     46 
     47 CSSViewportRule::~CSSViewportRule()
     48 {
     49     if (m_propertiesCSSOMWrapper)
     50         m_propertiesCSSOMWrapper->clearParentRule();
     51 }
     52 
     53 CSSStyleDeclaration* CSSViewportRule::style() const
     54 {
     55     if (!m_propertiesCSSOMWrapper)
     56         m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_viewportRule->mutableProperties(), const_cast<CSSViewportRule*>(this));
     57 
     58     return m_propertiesCSSOMWrapper.get();
     59 }
     60 
     61 String CSSViewportRule::cssText() const
     62 {
     63     StringBuilder result;
     64     result.appendLiteral("@viewport { ");
     65 
     66     String decls = m_viewportRule->properties()->asText();
     67     result.append(decls);
     68     if (!decls.isEmpty())
     69         result.append(' ');
     70 
     71     result.append('}');
     72 
     73     return result.toString();
     74 }
     75 
     76 void CSSViewportRule::reattach(StyleRuleBase* rule)
     77 {
     78     ASSERT(rule);
     79     ASSERT_WITH_SECURITY_IMPLICATION(rule->isViewportRule());
     80     m_viewportRule = static_cast<StyleRuleViewport*>(rule);
     81 
     82     if (m_propertiesCSSOMWrapper)
     83         m_propertiesCSSOMWrapper->reattach(m_viewportRule->mutableProperties());
     84 }
     85 
     86 } // namespace WebCore
     87