Support the essential part of Shadow DOM v1

third_party/WebKit/Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 42 matching lines @@
 class Document;
 class Element;
 class Event;
 class EventDispatchMediator;
 class EventListener;
 class ExceptionState;
 class FloatPoint;
 class LocalFrame;
 class HTMLInputElement;
 class HTMLQualifiedName;
+class HTMLSlotElement;
 class IntRect;
 class KeyboardEvent;
 class NSResolver;
 class NameNodeList;
 class NamedNodeMap;
 class NodeEventContext;
 class NodeList;
 class NodeListsNodeData;
 class NodeRareData;
 class PlatformGestureEvent;
@@ skipping 215 matching lines @@
     // this apparently guards against.
     bool isStyledElement() const { return isHTMLElement() || isSVGElement(); }
 
     bool isDocumentNode() const;
     bool isTreeScope() const;
     bool isDocumentFragment() const { return getFlag(IsDocumentFragmentFlag); }
     bool isShadowRoot() const { return isDocumentFragment() && isTreeScope(); }
     bool isInsertionPoint() const { return getFlag(IsInsertionPointFlag); }
 
     bool canParticipateInComposedTree() const;
+    bool isSlotOrActiveInsertionPoint() const;
 
     bool hasCustomStyleCallbacks() const { return getFlag(HasCustomStyleCallbacksFlag); }
 
     // If this node is in a shadow tree, returns its shadow host. Otherwise, returns nullptr.
     // TODO(kochi): crbug.com/507413 shadowHost() can return nullptr even when it is in a
     // shadow tree but its root is detached from its host. This can happen when handling
     // queued events (e.g. during execCommand()).
     Element* shadowHost() const;
     ShadowRoot* containingShadowRoot() const;
     ShadowRoot* youngestShadowRoot() const;
@@ skipping 340 matching lines @@
     void registerTransientMutationObserver(MutationObserverRegistration*);
     void unregisterTransientMutationObserver(MutationObserverRegistration*);
     void notifyMutationObserversNodeWillDetach();
 
     unsigned connectedSubframeCount() const;
     void incrementConnectedSubframeCount(unsigned amount = 1);
     void decrementConnectedSubframeCount(unsigned amount = 1);
     void updateAncestorConnectedSubframeCountForInsertion() const;
 
     PassRefPtrWillBeRawPtr<StaticNodeList> getDestinationInsertionPoints();
+    HTMLSlotElement* assignedSlot() const;
+    HTMLSlotElement* assignedSlotForBinding() { updateDistribution(); return assignedSlot(); }
 
     void setAlreadySpellChecked(bool flag) { setFlag(flag, AlreadySpellCheckedFlag); }
     bool isAlreadySpellChecked() { return getFlag(AlreadySpellCheckedFlag); }
 
     bool isFinishedParsingChildren() const { return getFlag(IsFinishedParsingChildrenFlag); }
 
     DECLARE_VIRTUAL_TRACE();
 
     unsigned lengthOfContents() const;
 
@@ skipping 244 matching lines @@
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif // Node_h