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-rw-r--r--Source/WebCore/html/shadow/ContentDistributor.h96
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diff --git a/Source/WebCore/html/shadow/ContentDistributor.h b/Source/WebCore/html/shadow/ContentDistributor.h
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-/*
- * Copyright (C) 2011 Google 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:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * 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.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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 ContentDistributor_h
-#define ContentDistributor_h
-
-#include <wtf/Forward.h>
-#include <wtf/HashMap.h>
-#include <wtf/RefCounted.h>
-#include <wtf/Vector.h>
-
-namespace WebCore {
-
-class ContainerNode;
-class Element;
-class InsertionPoint;
-class Node;
-class ShadowRoot;
-
-class ContentDistributor {
- WTF_MAKE_NONCOPYABLE(ContentDistributor);
-public:
- enum Validity {
- Valid = 0,
- Invalidated = 1,
- Invalidating = 2,
- Undetermined = 3
- };
-
- ContentDistributor();
- ~ContentDistributor();
-
- void invalidateInsertionPointList();
-
- InsertionPoint* findInsertionPointFor(const Node* key) const;
-
- void distributeSelectionsTo(InsertionPoint*, Element* host);
-
- void invalidateDistribution(Element* host);
- void didShadowBoundaryChange(Element* host);
-
- static void ensureDistribution(ShadowRoot*);
- void distribute(Element* host);
- bool needsDistribution() const;
-
-private:
- const Vector<RefPtr<InsertionPoint>>& ensureInsertionPointList(ShadowRoot*);
-
- bool invalidate(Element* host);
-
- void setValidity(Validity validity) { m_validity = validity; }
- bool isValid() const { return m_validity == Valid; }
- bool needsInvalidation() const { return m_validity != Invalidated; }
-
- Vector<RefPtr<InsertionPoint>> m_insertionPointList;
- HashMap<const Node*, RefPtr<InsertionPoint>> m_nodeToInsertionPoint;
- bool m_insertionPointListIsValid;
- unsigned m_validity : 2;
-};
-
-inline bool ContentDistributor::needsDistribution() const
-{
- // During the invalidation, re-distribution should be supressed.
- return m_validity != Valid && m_validity != Invalidating;
-}
-
-}
-
-#endif