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
|
// Copyright 2016 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_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_WRAPPER_H_
#define CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_WRAPPER_H_
#include <unordered_set>
#include "base/memory/raw_ptr.h"
#include "base/threading/thread_checker.h"
#include "content/common/content_export.h"
#include "device/bluetooth/bluetooth_adapter.h"
namespace content {
class WebBluetoothServiceImpl;
// Wrapper around BluetoothAdapterFactory that allows us to change
// the underlying BluetoothAdapter object and have the observers
// observe the new instance of the object.
// TODO(ortuno): Once there is no need to swap the adapter to change its
// behavior observers should add/remove themselves to/from the adapter.
// http://crbug.com/603291
class CONTENT_EXPORT BluetoothAdapterFactoryWrapper {
public:
using AcquireAdapterCallback =
base::OnceCallback<void(scoped_refptr<device::BluetoothAdapter>)>;
BluetoothAdapterFactoryWrapper();
BluetoothAdapterFactoryWrapper(const BluetoothAdapterFactoryWrapper& other) =
delete;
BluetoothAdapterFactoryWrapper& operator=(
const BluetoothAdapterFactoryWrapper& other) = delete;
~BluetoothAdapterFactoryWrapper();
static BluetoothAdapterFactoryWrapper& Get();
// Returns true if the platform supports Bluetooth Low Energy or if
// SetBluetoothAdapterOverride has been called.
bool IsLowEnergySupported();
// Adds |service| to the set of adapter observers if this is the first time
// the service has tried to acquire the adapter. If another service has
// acquired the adapter in the past it adds |service| as an observer to that
// adapter, otherwise it gets a new adapter and adds |service| to it. Runs
// |callback| with the adapter |service| has been added to.
void AcquireAdapter(WebBluetoothServiceImpl* service,
AcquireAdapterCallback callback);
// Removes |service| from the list of adapter observers if |service|
// has acquired the adapter in the past. If there are no more observers
// it deletes the reference to the adapter.
void ReleaseAdapter(WebBluetoothServiceImpl* service);
// Returns an adapter if |service| has acquired an adapter in the past and
// this instance holds a reference to an adapter. Otherwise returns nullptr.
device::BluetoothAdapter* GetAdapter(WebBluetoothServiceImpl* service);
// Sets a new BluetoothAdapter to be returned by GetAdapter. When setting
// a new adapter all observers from the old adapter are removed and added
// to |test_adapter|.
void SetBluetoothAdapterOverride(
scoped_refptr<device::BluetoothAdapter> test_adapter);
private:
friend class WebBluetoothServiceImplTestWithBaseAdapter;
void OnGetAdapter(AcquireAdapterCallback continuation,
scoped_refptr<device::BluetoothAdapter> adapter);
void OnGetOverrideAdapter(
AcquireAdapterCallback continuation,
scoped_refptr<device::BluetoothAdapter> override_adapter);
bool HasAdapter(WebBluetoothServiceImpl* service);
void MaybeAddAdapterObserver(WebBluetoothServiceImpl* service);
void RemoveAdapterObserver(WebBluetoothServiceImpl* service);
scoped_refptr<device::BluetoothAdapter> GetActiveAdapter();
// Sets |adapter_| to a BluetoothAdapter instance and register observers,
// releasing references to previous |adapter_|.
void SetAdapterInternal(scoped_refptr<device::BluetoothAdapter> adapter,
bool is_override_adapter);
// A BluetoothAdapter instance representing an adapter of the system.
scoped_refptr<device::BluetoothAdapter> adapter_;
// A BluetoothAdapter override instance configured for testing purposes.
scoped_refptr<device::BluetoothAdapter> override_adapter_;
// A BluetoothAdapter instance configured for testing purposes which will be
// activated by the first call to AcquireAdapter(). A pending override adapter
// is required to support graceful removal of an already supplied override
// adapter.
scoped_refptr<device::BluetoothAdapter> pending_override_adapter_;
// We keep a list of all observers so that when the adapter gets swapped,
// we can remove all observers from the old adapter and add them to the
// new adapter.
std::unordered_set<raw_ptr<WebBluetoothServiceImpl, CtnExperimental>>
adapter_observers_;
// Should only be called on the UI thread.
THREAD_CHECKER(thread_checker_);
// Weak pointer factory for generating 'this' pointers that might live longer
// than we do.
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<BluetoothAdapterFactoryWrapper> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_WRAPPER_H_
|
