1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
// Copyright 2019 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_HID_HID_SERVICE_H_
#define CONTENT_BROWSER_HID_HID_SERVICE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/service_worker/service_worker_context_core.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"
#include "url/origin.h"
namespace content {
class HidChooser;
// HidService provides an implementation of the HidService mojom interface. This
// interface is used by Blink to implement the WebHID API.
class CONTENT_EXPORT HidService : public blink::mojom::HidService,
public device::mojom::HidConnectionWatcher,
public HidDelegate::Observer {
public:
explicit HidService(RenderFrameHostImpl*);
HidService(base::WeakPtr<ServiceWorkerContextCore>, const url::Origin&);
HidService(HidService&) = delete;
HidService& operator=(HidService&) = delete;
~HidService() override;
// Use this when creating from a document.
static void Create(RenderFrameHostImpl*,
mojo::PendingReceiver<blink::mojom::HidService>);
// Use this when creating from a service worker, which doesn't have
// RenderFrameHost.
static void Create(base::WeakPtr<ServiceWorkerContextCore>,
const url::Origin&,
mojo::PendingReceiver<blink::mojom::HidService>);
// blink::mojom::HidService:
void RegisterClient(
mojo::PendingAssociatedRemote<device::mojom::HidManagerClient> client)
override;
void GetDevices(GetDevicesCallback callback) override;
void RequestDevice(
std::vector<blink::mojom::HidDeviceFilterPtr> filters,
std::vector<blink::mojom::HidDeviceFilterPtr> exclusion_filters,
RequestDeviceCallback callback) override;
void Connect(const std::string& device_guid,
mojo::PendingRemote<device::mojom::HidConnectionClient> client,
ConnectCallback callback) override;
void Forget(device::mojom::HidDeviceInfoPtr device_info,
ForgetCallback callback) override;
// HidDelegate::Observer:
void OnDeviceAdded(const device::mojom::HidDeviceInfo& device_info) override;
void OnDeviceRemoved(
const device::mojom::HidDeviceInfo& device_info) override;
void OnDeviceChanged(
const device::mojom::HidDeviceInfo& device_info) override;
void OnHidManagerConnectionError() override;
void OnPermissionRevoked(const url::Origin& origin) override;
private:
HidService(RenderFrameHostImpl* render_frame_host,
base::WeakPtr<ServiceWorkerContextCore> service_worker_context,
const url::Origin& origin);
void OnWatcherRemoved(bool cleanup_watcher_ids);
void IncrementActiveFrameCount();
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);
// Get the BrowserContext this HidService belongs to. It returns nullptr if
// the BrowserContext is destroyed.
BrowserContext* GetBrowserContext();
// When RenderFrameHost pointed by |render_frame_host| is destroyed, the
// bound HidService will be destroyed first. It should be safe to access
// |render_frame_host_| whenever it is not null.
const raw_ptr<RenderFrameHostImpl> render_frame_host_;
// The ServiceWorkerContextCore of the service worker this HidService belongs
// to.
const base::WeakPtr<content::ServiceWorkerContextCore>
service_worker_context_;
// The last shown HID chooser UI.
std::unique_ptr<HidChooser> chooser_;
url::Origin 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_;
// Maps every receiver to a guid to allow closing particular connections when
// the user revokes a permission.
std::multimap<std::string, mojo::ReceiverId> watcher_ids_;
base::WeakPtrFactory<HidService> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_HID_HID_SERVICE_H_
|
