Home | History | Annotate | Download | only in resolver 
      1 /*
      2  * Copyright (C) 2012 Intel Corporation. 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 #ifndef ViewportStyleResolver_h
     31 #define ViewportStyleResolver_h
     32 
     33 #include "core/CSSPropertyNames.h"
     34 #include "core/css/RuleSet.h"
     35 #include "platform/Length.h"
     36 #include "wtf/RefCounted.h"
     37 #include "wtf/RefPtr.h"
     38 
     39 namespace WebCore {
     40 
     41 class Document;
     42 class MutableStylePropertySet;
     43 class StyleRuleViewport;
     44 
     45 class ViewportStyleResolver : public NoBaseWillBeGarbageCollected<ViewportStyleResolver> {
     46     DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(ViewportStyleResolver);
     47 public:
     48     static PassOwnPtrWillBeRawPtr<ViewportStyleResolver> create(Document* document)
     49     {
     50         return adoptPtrWillBeNoop(new ViewportStyleResolver(document));
     51     }
     52 
     53     enum Origin { UserAgentOrigin, AuthorOrigin };
     54 
     55     void collectViewportRules(RuleSet*, Origin);
     56 
     57     void resolve();
     58 
     59     void trace(Visitor*);
     60 
     61 private:
     62     explicit ViewportStyleResolver(Document*);
     63 
     64     void addViewportRule(StyleRuleViewport*, Origin);
     65 
     66     float viewportArgumentValue(CSSPropertyID) const;
     67     Length viewportLengthValue(CSSPropertyID) const;
     68 
     69     Document* m_document;
     70     RefPtrWillBeMember<MutableStylePropertySet> m_propertySet;
     71     bool m_hasAuthorStyle;
     72 };
     73 
     74 } // namespace WebCore
     75 
     76 #endif // ViewportStyleResolver_h
     77