Skeleton implementation of CSS Properties and Values API

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

 /*
  * 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, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 35 matching lines @@
 #include "core/XMLNSNames.h"
 #include "core/XMLNames.h"
 #include "core/animation/CompositorPendingAnimations.h"
 #include "core/animation/DocumentAnimations.h"
 #include "core/animation/DocumentTimeline.h"
 #include "core/css/CSSFontSelector.h"
 #include "core/css/CSSStyleDeclaration.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/FontFaceSet.h"
 #include "core/css/MediaQueryMatcher.h"
+#include "core/css/PropertyRegistry.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/StyleSheetList.h"
 #include "core/css/invalidation/StyleInvalidator.h"
 #include "core/css/parser/CSSParser.h"
 #include "core/css/resolver/FontBuilder.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/css/resolver/StyleResolverStats.h"
 #include "core/dom/AXObjectCache.h"
 #include "core/dom/Attr.h"
@@ skipping 5901 matching lines @@
 
     if (order > m_shadowCascadeOrder)
         m_shadowCascadeOrder = order;
 }
 
 LayoutViewItem Document::layoutViewItem() const
 {
     return LayoutViewItem(m_layoutView);
 }
 
+PropertyRegistry* Document::propertyRegistry()
+{
+    // TODO(timloh): When the flag is removed, return a reference instead.
+    if (!m_propertyRegistry && RuntimeEnabledFeatures::cssVariables2Enabled())
+        m_propertyRegistry = PropertyRegistry::create();
+    return m_propertyRegistry;
+}
+
 DEFINE_TRACE(Document)
 {
     visitor->trace(m_importsController);
     visitor->trace(m_docType);
     visitor->trace(m_implementation);
     visitor->trace(m_autofocusElement);
     visitor->trace(m_focusedElement);
     visitor->trace(m_sequentialFocusNavigationStartingPoint);
     visitor->trace(m_hoverNode);
     visitor->trace(m_activeHoverElement);
@@ skipping 37 matching lines @@
     visitor->trace(m_userActionElements);
     visitor->trace(m_svgExtensions);
     visitor->trace(m_timeline);
     visitor->trace(m_compositorPendingAnimations);
     visitor->trace(m_contextDocument);
     visitor->trace(m_canvasFontCache);
     visitor->trace(m_intersectionObserverController);
     visitor->trace(m_intersectionObserverData);
     visitor->trace(m_snapCoordinator);
     visitor->trace(m_resizeObserverController);
+    visitor->trace(m_propertyRegistry);
     Supplementable<Document>::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
     SecurityContext::trace(visitor);
 }
 
 void Document::onVisibilityMaybeChanged(bool visible)
 {
     DCHECK(frame());
@@ skipping 34 matching lines @@
 }
 
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().getString().utf8().data());
 }
 #endif