Compute snap offsets according to CSS Scroll Snap Spec Level 1

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 139 matching lines @@
 class SVGUseElement;
 class ScriptRunner;
 class ScriptableDocumentParser;
 class ScriptedAnimationController;
 class ScriptedIdleTaskController;
 class SecurityOrigin;
 class SegmentedString;
 class SelectorQueryCache;
 class SerializedScriptValue;
 class Settings;
+class SnapCoordinator;
 class StyleEngine;
 class StyleResolver;
 class StyleSheet;
 class StyleSheetList;
 class Text;
 class TextAutosizer;
 class Touch;
 class TouchList;
 class TransformSource;
 class TreeWalker;
@@ skipping 874 matching lines @@
     static bool threadedParsingEnabledForTesting();
 
     void incrementNodeCount() { m_nodeCount++; }
     void decrementNodeCount()
     {
         DCHECK_GT(m_nodeCount, 0);
         m_nodeCount--;
     }
     int nodeCount() const { return m_nodeCount; }
 
+    SnapCoordinator* snapCoordinator();
+
     using WeakDocumentSet = HeapHashSet<WeakMember<Document>>;
     static WeakDocumentSet& liveDocumentSet();
 
     WebTaskRunner* loadingTaskRunner() const;
     WebTaskRunner* timerTaskRunner() const;
 
     void enforceStrictMixedContentChecking();
 
     bool mayContainV0Shadow() const { return m_mayContainV0Shadow; }
 
@@ skipping 318 matching lines @@
     ClientHintsPreferences m_clientHintsPreferences;
 
     Member<CanvasFontCache> m_canvasFontCache;
 
     Member<IntersectionObserverController> m_intersectionObserverController;
     Member<NodeIntersectionObserverData> m_intersectionObserverData;
 
     int m_nodeCount;
 
     bool m_mayContainV0Shadow = false;
+
+    Member<SnapCoordinator> m_snapCoordinator;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT Supplement<Document>;
 
 inline bool Document::shouldOverrideLegacyDescription(ViewportDescription::Type origin) const
 {
     // The different (legacy) meta tags have different priorities based on the type
     // regardless of which order they appear in the DOM. The priority is given by the
     // ViewportDescription::Type enum.
     return origin >= m_legacyViewportDescription.type;
@@ skipping 29 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h