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// Copyright 2019 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_WEBAUDIO_INSPECTOR_HELPER_MIXIN_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_INSPECTOR_HELPER_MIXIN_H_
#include <memory>
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class AudioGraphTracer;
// Supports the event reporting between Blink WebAudio module and the
// associated DevTool's inspector agent. Generates an UUID for each element,
// and keeps an UUID for a parent element.
class InspectorHelperMixin : public GarbageCollectedMixin {
public:
explicit InspectorHelperMixin(AudioGraphTracer&, const String& parent_uuid);
~InspectorHelperMixin() = default;
AudioGraphTracer& GraphTracer() { return *graph_tracer_; }
const String& Uuid() const { return uuid_; }
const String& ParentUuid() const { return parent_uuid_; }
// Called by the subclass to report the construction of graph objects
// (BaseAudioContext, AudioNode, AudioParam, AudioListener) to the inspector
// agent. Note that the devtools frontend will be expecting the parent object
// to be the first in this call.
virtual void ReportDidCreate() = 0;
// Called by the subclass to report the construction of graph objects
// (BaseAudioContext, AudioNode, AudioParam, AudioListener) to the inspector
// agent. Note that the devtools frontend will be expecting the parent object
// to be the last in this call.
virtual void ReportWillBeDestroyed() = 0;
void Trace(Visitor*) const override;
private:
Member<AudioGraphTracer> graph_tracer_;
const String uuid_;
const String parent_uuid_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_INSPECTOR_HELPER_MIXIN_H_
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