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 blink { 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: create(Document * document)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 RawPtrWillBeMember<Document> m_document; 70 RefPtrWillBeMember<MutableStylePropertySet> m_propertySet; 71 bool m_hasAuthorStyle; 72 }; 73 74 } // namespace blink 75 76 #endif // ViewportStyleResolver_h 77