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// Copyright 2015 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_BACKGROUND_SYNC_BACKGROUND_SYNC_NETWORK_OBSERVER_H_
#define CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_NETWORK_OBSERVER_H_
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "content/browser/background_sync/background_sync.pb.h"
#include "content/common/content_export.h"
#include "services/network/public/cpp/network_connection_tracker.h"
namespace content {
class CONTENT_EXPORT BackgroundSyncNetworkObserver
: public network::NetworkConnectionTracker::NetworkConnectionObserver {
public:
// Creates a BackgroundSyncNetworkObserver. |network_changed_callback| is
// called when the network connection changes asynchronously via PostMessage.
BackgroundSyncNetworkObserver(
base::RepeatingClosure network_changed_callback);
BackgroundSyncNetworkObserver(const BackgroundSyncNetworkObserver&) = delete;
BackgroundSyncNetworkObserver& operator=(
const BackgroundSyncNetworkObserver&) = delete;
~BackgroundSyncNetworkObserver() override;
// Does nothing in this class, but can be overridden to do some work
// separately from the constructor.
virtual void Init() {}
// Enable or disable notifications coming from the NetworkConnectionTracker.
// (For preventing flakes in tests)
static void SetIgnoreNetworkChangesForTests(bool ignore);
// Returns true if the network is online.
bool NetworkSufficient();
// NetworkConnectionObserver overrides
void OnConnectionChanged(
network::mojom::ConnectionType connection_type) override;
// Allow tests to call NotifyManagerIfConnectionChanged.
void NotifyManagerIfConnectionChangedForTesting(
network::mojom::ConnectionType connection_type);
private:
// Finishes setup once we get the NetworkConnectionTracker from the UI thread.
virtual void RegisterWithNetworkConnectionTracker(
network::NetworkConnectionTracker* network_connection_tracker);
// Update the current connection type from the NetworkConnectionTracker.
void UpdateConnectionType();
// Calls NotifyConnectionChanged if the connection type has changed.
void NotifyManagerIfConnectionChanged(
network::mojom::ConnectionType connection_type);
void NotifyConnectionChanged();
// NetworkConnectionTracker is a global singleton which will outlive this
// object.
raw_ptr<network::NetworkConnectionTracker> network_connection_tracker_;
network::mojom::ConnectionType connection_type_;
// The callback to run when the connection changes.
base::RepeatingClosure connection_changed_callback_;
// Set true to ignore notifications coming from the NetworkConnectionTracker
// (to prevent flakes in tests).
static bool ignore_network_changes_;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<BackgroundSyncNetworkObserver> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_NETWORK_OBSERVER_H_
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