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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_HID_HID_SERVICE_H_
#define CONTENT_BROWSER_HID_HID_SERVICE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "base/scoped_observer.h"
#include "content/public/browser/frame_service_base.h"
#include "content/public/browser/hid_delegate.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote_set.h"
#include "services/device/public/mojom/hid.mojom.h"
#include "third_party/blink/public/mojom/hid/hid.mojom.h"
namespace content {
class HidChooser;
class RenderFrameHost;
// HidService provides an implementation of the HidService mojom interface. This
// interface is used by Blink to implement the WebHID API.
class HidService : public content::FrameServiceBase<blink::mojom::HidService>,
public device::mojom::HidConnectionWatcher,
public HidDelegate::Observer {
public:
HidService(HidService&) = delete;
HidService& operator=(HidService&) = delete;
static void Create(RenderFrameHost*,
mojo::PendingReceiver<blink::mojom::HidService>);
// blink::mojom::HidService:
void RegisterClient(
device::mojom::HidManagerClientAssociatedPtrInfo client) override;
void GetDevices(GetDevicesCallback callback) override;
void RequestDevice(std::vector<blink::mojom::HidDeviceFilterPtr> filters,
RequestDeviceCallback callback) override;
void Connect(const std::string& device_guid,
mojo::PendingRemote<device::mojom::HidConnectionClient> client,
ConnectCallback callback) override;
// HidDelegate::Observer:
void OnDeviceAdded(const device::mojom::HidDeviceInfo& device_info) override;
void OnDeviceRemoved(
const device::mojom::HidDeviceInfo& device_info) override;
void OnHidManagerConnectionError() override;
void OnPermissionRevoked(const url::Origin& requesting_origin,
const url::Origin& embedding_origin) override;
private:
HidService(RenderFrameHost*, mojo::PendingReceiver<blink::mojom::HidService>);
~HidService() override;
void OnWatcherConnectionError();
void DecrementActiveFrameCount();
void FinishGetDevices(GetDevicesCallback callback,
std::vector<device::mojom::HidDeviceInfoPtr> devices);
void FinishRequestDevice(
RequestDeviceCallback callback,
std::vector<device::mojom::HidDeviceInfoPtr> devices);
void FinishConnect(
ConnectCallback callback,
mojo::PendingRemote<device::mojom::HidConnection> connection);
// The last shown HID chooser UI.
std::unique_ptr<HidChooser> chooser_;
url::Origin requesting_origin_;
url::Origin embedding_origin_;
// Used to bind with Blink.
mojo::AssociatedRemoteSet<device::mojom::HidManagerClient> clients_;
// Each pipe here watches a connection created by Connect() in order to notify
// the WebContentsImpl when an active connection indicator should be shown.
mojo::ReceiverSet<device::mojom::HidConnectionWatcher> watchers_;
base::WeakPtrFactory<HidService> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_HID_HID_SERVICE_H_
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