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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_GUEST_VIEW_RENDERER_GUEST_VIEW_CONTAINER_H_
#define COMPONENTS_GUEST_VIEW_RENDERER_GUEST_VIEW_CONTAINER_H_
#include <memory>
#include "base/containers/circular_deque.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "v8/include/v8-forward.h"
#include "v8/include/v8-persistent-handle.h"
namespace content {
class RenderFrame;
}
namespace guest_view {
class GuestViewAttachRequest;
class GuestViewContainer {
public:
explicit GuestViewContainer(content::RenderFrame* render_frame,
int element_instance_id);
GuestViewContainer(const GuestViewContainer&) = delete;
GuestViewContainer& operator=(const GuestViewContainer&) = delete;
static GuestViewContainer* FromID(int element_instance_id);
// IssueRequest queues up a |request| until the container is ready and
// the browser process has responded to the last request if it's still
// pending.
void IssueRequest(std::unique_ptr<GuestViewAttachRequest> request);
int element_instance_id() const { return element_instance_id_; }
// Called when a previously issued `request` was acknowledged by the browser.
void OnRequestAcknowledged(GuestViewAttachRequest* request);
// Destroys this GuestViewContainer after performing necessary cleanup.
// |embedder_frame_destroyed| is true if this destruction is due to the
// embedding frame of the container being destroyed.
void Destroy(bool embedder_frame_destroyed);
void RegisterDestructionCallback(v8::Local<v8::Function> callback,
v8::Isolate* isolate);
private:
~GuestViewContainer();
class RenderFrameLifetimeObserver;
friend class RenderFrameLifetimeObserver;
void RenderFrameDestroyed();
void EnqueueRequest(std::unique_ptr<GuestViewAttachRequest> request);
void PerformPendingRequest();
void RunDestructionCallback(bool embedder_frame_destroyed);
const int element_instance_id_;
std::unique_ptr<RenderFrameLifetimeObserver> render_frame_lifetime_observer_;
bool in_destruction_ = false;
base::circular_deque<std::unique_ptr<GuestViewAttachRequest>>
pending_requests_;
std::unique_ptr<GuestViewAttachRequest> pending_response_;
v8::Global<v8::Function> destruction_callback_;
raw_ptr<v8::Isolate> destruction_isolate_ = nullptr;
base::WeakPtrFactory<GuestViewContainer> weak_ptr_factory_{this};
};
} // namespace guest_view
#endif // COMPONENTS_GUEST_VIEW_RENDERER_GUEST_VIEW_CONTAINER_H_
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