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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DEVICE_DELEGATE_OBSERVER_H_
#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DEVICE_DELEGATE_OBSERVER_H_
#include "base/containers/flat_map.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "content/browser/service_worker/service_worker_context_core_observer.h"
#include "content/browser/service_worker/service_worker_context_wrapper.h"
#include "content/browser/service_worker/service_worker_registration.h"
#include "content/browser/service_worker/service_worker_version.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
namespace content {
class ServiceWorkerContextCore;
class CONTENT_EXPORT ServiceWorkerDeviceDelegateObserver
: public ServiceWorkerContextCoreObserver {
public:
using ServiceWorkerStartedCallback =
base::OnceCallback<void(scoped_refptr<ServiceWorkerVersion>,
blink::ServiceWorkerStatusCode)>;
struct RegistrationInfo {
blink::StorageKey key;
bool has_event_handlers;
bool operator==(const RegistrationInfo& other) const {
return key == other.key && has_event_handlers == other.has_event_handlers;
}
};
using RegistrationIdMap = base::flat_map<int64_t, RegistrationInfo>;
explicit ServiceWorkerDeviceDelegateObserver(
ServiceWorkerContextCore* context);
ServiceWorkerDeviceDelegateObserver(
const ServiceWorkerDeviceDelegateObserver&) = delete;
ServiceWorkerDeviceDelegateObserver& operator=(
const ServiceWorkerDeviceDelegateObserver&) = delete;
~ServiceWorkerDeviceDelegateObserver() override;
// ServiceWorkerContextCoreObserver:
void OnRegistrationDeleted(int64_t registration_id,
const GURL& scope,
const blink::StorageKey& key) override;
void OnStopped(int64_t version_id) override;
// Register the ServiceWorkerRegistration with `registration_id` to respond to
// device delegate observer.
void Register(int64_t registration_id);
// Start the worker with `registration_id` and run `callback` on the worker.
void DispatchEventToWorker(int64_t registration_id,
ServiceWorkerStartedCallback callback);
// Set `registration_id_map_[registration_id].has_event_handlers` to
// `has_event_handlers`. If `registration_id` isn't in
// `registration_id_map_`. It will call `Register(registration_id)` to
// register it.
void UpdateHasEventHandlers(int64_t registration_id, bool has_event_handlers);
// Process pending callbacked stored in
// `pending_callbacks_[version->version_id()]`.
void ProcessPendingCallbacks(ServiceWorkerVersion* version);
// Add `callback` to `pending_callbacks_[version->version_id()]`.
void AddPendingCallback(ServiceWorkerVersion* version,
base::OnceClosure callback);
BrowserContext* GetBrowserContext();
const RegistrationIdMap& registration_id_map() {
return registration_id_map_;
}
const base::flat_map<int64_t, std::vector<base::OnceClosure>>&
GetPendingCallbacksForTesting() {
return pending_callbacks_;
}
private:
// It is called when `registration_id` is added to `registration_id_map_`.
virtual void RegistrationAdded(int64_t registration_id) = 0;
// It is called when `registration_id` is removed to `registration_id_map_`.
virtual void RegistrationRemoved(int64_t registration_id) = 0;
// The map stores ids of service worker registrations that need to respond to
// device delegate observer.
RegistrationIdMap registration_id_map_;
// `pending_callbacks_` is a buffer for storing callbacks when some states are
// not yet reached even when the worker is running.
// For example, when the script is evaluated and the service worker is
// running, the inter-process request that registers to HidService for
// renderer client might not be done. Callbacks `pending_callbacks_` here can
// be used as a buffer to hold these callbacks until the client registration
// completes.
// `pending_callbacks_[version_id]` will be cleared when the worker with
// `version_id` stopped.
base::flat_map<int64_t, std::vector<base::OnceClosure>> pending_callbacks_;
// ServiceWorkerDeviceDelegateObserver is owned by ServiceWorkerContextCore.
const raw_ref<ServiceWorkerContextCore> context_;
base::ScopedObservation<ServiceWorkerContextWrapper,
ServiceWorkerContextCoreObserver>
observation_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DEVICE_DELEGATE_OBSERVER_H_
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