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// 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_MODULES_CSSPAINT_PAINT_WORKLET_PENDING_GENERATOR_REGISTRY_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_CSSPAINT_PAINT_WORKLET_PENDING_GENERATOR_REGISTRY_H_
#include "base/macros.h"
#include "third_party/blink/renderer/modules/csspaint/css_paint_image_generator_impl.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
#include "third_party/blink/renderer/platform/heap/heap_allocator.h"
namespace blink {
class CSSPaintDefinition;
// Keeps pending CSSPaintImageGeneratorImpls until corresponding
// CSSPaintDefinitions are registered. This is primarily owned by the
// PaintWorklet instance.
class PaintWorkletPendingGeneratorRegistry
: public GarbageCollected<PaintWorkletPendingGeneratorRegistry> {
public:
PaintWorkletPendingGeneratorRegistry() = default;
void NotifyGeneratorReady(const String& name);
void AddPendingGenerator(const String& name, CSSPaintImageGeneratorImpl*);
void Trace(Visitor*);
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_;
DISALLOW_COPY_AND_ASSIGN(PaintWorkletPendingGeneratorRegistry);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_CSSPAINT_PAINT_WORKLET_PENDING_GENERATOR_REGISTRY_H_
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