Index: third_party/WebKit/Source/modules/csspaint/PaintWorkletPendingGeneratorRegistry.h |
diff --git a/third_party/WebKit/Source/modules/csspaint/PaintWorkletPendingGeneratorRegistry.h b/third_party/WebKit/Source/modules/csspaint/PaintWorkletPendingGeneratorRegistry.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f7e2e4c8a3383ec94bb38b96bd3e9ff2c2f45273 |
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+++ b/third_party/WebKit/Source/modules/csspaint/PaintWorkletPendingGeneratorRegistry.h |
@@ -0,0 +1,41 @@ |
+// 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 PaintWorkletPendingGeneratorRegistry_h |
+#define PaintWorkletPendingGeneratorRegistry_h |
+ |
+#include "modules/csspaint/CSSPaintImageGeneratorImpl.h" |
+#include "platform/heap/Heap.h" |
+#include "platform/heap/HeapAllocator.h" |
+ |
+namespace blink { |
+ |
+class CSSPaintDefinition; |
+ |
+// Keeps pending CSSPaintImageGeneratorImpls until corresponding |
+// CSSPaintDefinitions are registered. |
+class PaintWorkletPendingGeneratorRegistry |
+ : public GarbageCollected<PaintWorkletPendingGeneratorRegistry> { |
+ WTF_MAKE_NONCOPYABLE(PaintWorkletPendingGeneratorRegistry); |
+ |
+ public: |
+ PaintWorkletPendingGeneratorRegistry() = default; |
+ |
+ void SetDefinition(const String& name, CSSPaintDefinition*); |
+ void AddPendingGenerator(const String& name, CSSPaintImageGeneratorImpl*); |
+ |
+ DECLARE_TRACE(); |
+ |
+ private: |
+ // The map of CSSPaintImageGeneratorImpl which are waiting for a |
+ // CSSPaintDefinition to be registered. Owners of this registry is expected to |
+ // outlive the generators hence are held onto with a WeakMember. |
+ using GeneratorHashSet = HeapHashSet<WeakMember<CSSPaintImageGeneratorImpl>>; |
+ using PendingGeneratorMap = HeapHashMap<String, Member<GeneratorHashSet>>; |
+ PendingGeneratorMap pending_generators_; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // PaintWorkletPendingGeneratorRegistry_h |