/* * Copyright (C) 2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef StyleRelations_h #define StyleRelations_h #include <wtf/Vector.h> namespace WebCore { class Element; class RenderStyle; namespace Style { class Update; struct Relation { enum Type { AffectedByActive, AffectedByDrag, AffectedByEmpty, AffectedByFocusWithin, AffectedByHover, AffectedByPreviousSibling, // For AffectsNextSibling 'value' tells how many element siblings to mark starting with 'element'. AffectsNextSibling, ChildrenAffectedByBackwardPositionalRules, ChildrenAffectedByFirstChildRules, ChildrenAffectedByPropertyBasedBackwardPositionalRules, ChildrenAffectedByLastChildRules, FirstChild, LastChild, NthChildIndex, Unique, }; const Element* element; Type type; unsigned value; Relation(const Element& element, Type type, unsigned value = 1) : element(&element) , type(type) , value(value) { } }; using Relations = Vector<Relation, 8>; std::unique_ptr<Relations> commitRelationsToRenderStyle(RenderStyle&, const Element&, const Relations&); void commitRelations(std::unique_ptr<Relations>, Update&); } } #endif