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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.
#include "content/browser/background_sync/background_sync_network_observer.h"
#include "base/location.h"
#include "base/task/single_thread_task_runner.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/network_service_instance.h"
namespace content {
// static
bool BackgroundSyncNetworkObserver::ignore_network_changes_ = false;
// static
void BackgroundSyncNetworkObserver::SetIgnoreNetworkChangesForTests(
bool ignore) {
ignore_network_changes_ = ignore;
}
BackgroundSyncNetworkObserver::BackgroundSyncNetworkObserver(
base::RepeatingClosure connection_changed_callback)
: network_connection_tracker_(nullptr),
connection_type_(network::mojom::ConnectionType::CONNECTION_UNKNOWN),
connection_changed_callback_(std::move(connection_changed_callback)) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(connection_changed_callback_);
RegisterWithNetworkConnectionTracker(GetNetworkConnectionTracker());
}
BackgroundSyncNetworkObserver::~BackgroundSyncNetworkObserver() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (network_connection_tracker_)
network_connection_tracker_->RemoveNetworkConnectionObserver(this);
}
void BackgroundSyncNetworkObserver::RegisterWithNetworkConnectionTracker(
network::NetworkConnectionTracker* network_connection_tracker) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(network_connection_tracker);
network_connection_tracker_ = network_connection_tracker;
network_connection_tracker_->AddNetworkConnectionObserver(this);
UpdateConnectionType();
}
void BackgroundSyncNetworkObserver::UpdateConnectionType() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
network::mojom::ConnectionType connection_type;
bool synchronous_return = network_connection_tracker_->GetConnectionType(
&connection_type,
base::BindOnce(&BackgroundSyncNetworkObserver::OnConnectionChanged,
weak_ptr_factory_.GetWeakPtr()));
if (synchronous_return)
OnConnectionChanged(connection_type);
}
bool BackgroundSyncNetworkObserver::NetworkSufficient() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return connection_type_ != network::mojom::ConnectionType::CONNECTION_NONE;
}
void BackgroundSyncNetworkObserver::OnConnectionChanged(
network::mojom::ConnectionType connection_type) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (ignore_network_changes_)
return;
NotifyManagerIfConnectionChanged(connection_type);
}
void BackgroundSyncNetworkObserver::NotifyManagerIfConnectionChangedForTesting(
network::mojom::ConnectionType connection_type) {
NotifyManagerIfConnectionChanged(connection_type);
}
void BackgroundSyncNetworkObserver::NotifyManagerIfConnectionChanged(
network::mojom::ConnectionType connection_type) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (connection_type == connection_type_)
return;
connection_type_ = connection_type;
NotifyConnectionChanged();
}
void BackgroundSyncNetworkObserver::NotifyConnectionChanged() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, connection_changed_callback_);
}
} // namespace content
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