| // 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 THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_TREE_SCOPE_RESOURCES_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_TREE_SCOPE_RESOURCES_H_ |
| |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/forward.h" |
| #include "third_party/blink/renderer/platform/wtf/hash_map.h" |
| #include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h" |
| |
| namespace blink { |
| |
| class LocalSVGResource; |
| class TreeScope; |
| |
| // This class keeps track of SVG resources and pending references to such for a |
| // TreeScope. It's per-TreeScope because that matches the lookup scope of an |
| // element's id (which is used to identify a resource.) |
| class SVGTreeScopeResources final |
| : public GarbageCollected<SVGTreeScopeResources> { |
| public: |
| explicit SVGTreeScopeResources(TreeScope*); |
| |
| LocalSVGResource* ResourceForId(const AtomicString& id); |
| LocalSVGResource* ExistingResourceForId(const AtomicString& id) const; |
| |
| void Trace(Visitor*); |
| |
| private: |
| void ProcessCustomWeakness(const LivenessBroker&); |
| |
| HeapHashMap<AtomicString, WeakMember<LocalSVGResource>> resources_; |
| Member<TreeScope> tree_scope_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SVGTreeScopeResources); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_TREE_SCOPE_RESOURCES_H_ |