Index: third_party/WebKit/Source/core/svg/SVGTreeScopeResources.h |
diff --git a/third_party/WebKit/Source/core/svg/SVGTreeScopeResources.h b/third_party/WebKit/Source/core/svg/SVGTreeScopeResources.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..376511a080c3af31048ed9bdcd7752b78f5b33bf |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/svg/SVGTreeScopeResources.h |
@@ -0,0 +1,55 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef SVGTreeScopeResources_h |
+#define SVGTreeScopeResources_h |
+ |
+#include "platform/heap/Handle.h" |
+#include "wtf/Forward.h" |
+#include "wtf/HashMap.h" |
+#include "wtf/HashSet.h" |
+#include "wtf/text/AtomicStringHash.h" |
+ |
+namespace blink { |
+ |
+class Element; |
+class TreeScope; |
+class LayoutSVGResourceContainer; |
+ |
+class SVGTreeScopeResources |
pdr.
2017/01/23 04:34:12
Can you add a very short comment here describing t
fs
2017/01/23 11:18:24
Done.
|
+ : public GarbageCollectedFinalized<SVGTreeScopeResources> { |
+ WTF_MAKE_NONCOPYABLE(SVGTreeScopeResources); |
+ |
+ public: |
+ typedef HeapHashSet<Member<Element>> SVGPendingElements; |
+ |
+ explicit SVGTreeScopeResources(TreeScope*); |
+ ~SVGTreeScopeResources(); |
+ |
+ void addResource(const AtomicString& id, LayoutSVGResourceContainer*); |
+ void removeResource(const AtomicString& id); |
+ LayoutSVGResourceContainer* resourceById(const AtomicString& id) const; |
+ |
+ // Pending resources are such which are referenced by any object in the SVG |
+ // document, but do NOT exist yet. For instance, dynamically built gradients |
+ // / patterns / clippers... |
+ void addPendingResource(const AtomicString& id, Element*); |
+ bool hasPendingResource(const AtomicString& id) const; |
+ bool isElementPendingResources(Element*) const; |
+ bool isElementPendingResource(Element*, const AtomicString& id) const; |
+ void clearHasPendingResourcesIfPossible(Element*); |
+ void removeElementFromPendingResources(Element*); |
+ SVGPendingElements* removePendingResource(const AtomicString& id); |
+ |
+ DECLARE_TRACE(); |
+ |
+ private: |
+ HashMap<AtomicString, LayoutSVGResourceContainer*> m_resources; |
+ // Resources that are pending. |
+ HeapHashMap<AtomicString, Member<SVGPendingElements>> m_pendingResources; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // SVGTreeScopeResources_h |