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// Copyright 2018 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_SERIAL_SERIAL_SERVICE_H_
#define CONTENT_BROWSER_SERIAL_SERIAL_SERVICE_H_
#include <memory>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "content/public/browser/document_user_data.h"
#include "content/public/browser/serial_delegate.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote_set.h"
#include "services/device/public/mojom/serial.mojom.h"
#include "third_party/blink/public/mojom/serial/serial.mojom.h"
namespace content {
class RenderFrameHost;
class SerialChooser;
class SerialService : public blink::mojom::SerialService,
public SerialDelegate::Observer,
public device::mojom::SerialPortConnectionWatcher,
public content::DocumentUserData<SerialService> {
public:
explicit SerialService(RenderFrameHost* render_frame_host);
SerialService(const SerialService&) = delete;
SerialService& operator=(const SerialService&) = delete;
~SerialService() override;
void Bind(mojo::PendingReceiver<blink::mojom::SerialService> receiver);
// SerialService implementation
void SetClient(
mojo::PendingRemote<blink::mojom::SerialServiceClient> client) override;
void GetPorts(GetPortsCallback callback) override;
void RequestPort(std::vector<blink::mojom::SerialPortFilterPtr> filters,
const std::vector<::device::BluetoothUUID>&
allowed_bluetooth_service_class_ids,
RequestPortCallback callback) override;
void OpenPort(const base::UnguessableToken& token,
device::mojom::SerialConnectionOptionsPtr options,
mojo::PendingRemote<device::mojom::SerialPortClient> client,
OpenPortCallback callback) override;
void ForgetPort(const base::UnguessableToken& token,
ForgetPortCallback callback) override;
// SerialDelegate::Observer implementation
void OnPortAdded(const device::mojom::SerialPortInfo& port) override;
void OnPortRemoved(const device::mojom::SerialPortInfo& port) override;
void OnPortConnectedStateChanged(
const device::mojom::SerialPortInfo& port) override;
void OnPortManagerConnectionError() override;
void OnPermissionRevoked(const url::Origin& origin) override;
private:
// Map persistent identifier of a serial port to a token.
using TokenMap = base::flat_map<std::string, base::UnguessableToken>;
friend class content::DocumentUserData<SerialService>;
void FinishGetPorts(GetPortsCallback callback,
std::vector<device::mojom::SerialPortInfoPtr> ports);
void FinishRequestPort(RequestPortCallback callback,
device::mojom::SerialPortInfoPtr port);
void OnWatcherConnectionError();
void DecrementActiveFrameCount();
// Covert `port` to a type used in the renderer side. It might replace
// `port.token` with one from `token_map_` if `port` can provide a persistent
// identifier and be found in `token_map_`.
blink::mojom::SerialPortInfoPtr ToBlinkType(
const device::mojom::SerialPortInfo& port);
mojo::ReceiverSet<blink::mojom::SerialService> receivers_;
mojo::RemoteSet<blink::mojom::SerialServiceClient> clients_;
// The last shown serial port chooser UI.
std::unique_ptr<SerialChooser> chooser_;
// Each pipe here watches a connection created by GetPort() in order to notify
// the WebContentsImpl when an active connection indicator should be shown.
mojo::ReceiverSet<device::mojom::SerialPortConnectionWatcher> watchers_;
// Maps every receiver to a token to allow closing particular connections when
// the user revokes a permission.
std::multimap<const base::UnguessableToken, mojo::ReceiverId> watcher_ids_;
// This token map stores tokens for serial ports that can provide a persistent
// identifier.
TokenMap token_map_;
base::WeakPtrFactory<SerialService> weak_factory_{this};
DOCUMENT_USER_DATA_KEY_DECL();
};
} // namespace content
#endif // CONTENT_BROWSER_SERIAL_SERIAL_SERVICE_H_
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