webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

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diff --git a/Source/WebCore/style/StyleRelations.h b/Source/WebCore/style/StyleRelations.h
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+/*
+ * 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.
+ */
+
+#pragma once
+
+#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&);
+
+}
+}