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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
// 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.
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_descriptor.h"
#include <utility>
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_error.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_service.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_utils.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
BluetoothRemoteGATTDescriptor::BluetoothRemoteGATTDescriptor(
mojom::blink::WebBluetoothRemoteGATTDescriptorPtr descriptor,
BluetoothRemoteGATTCharacteristic* characteristic)
: descriptor_(std::move(descriptor)), characteristic_(characteristic) {}
void BluetoothRemoteGATTDescriptor::ReadValueCallback(
ScriptPromiseResolver<NotShared<DOMDataView>>* resolver,
mojom::blink::WebBluetoothResult result,
base::span<const uint8_t> value) {
if (!resolver->GetExecutionContext() ||
resolver->GetExecutionContext()->IsContextDestroyed())
return;
// If the device is disconnected, reject.
if (!GetGatt()->RemoveFromActiveAlgorithms(resolver)) {
resolver->Reject(
BluetoothError::CreateNotConnectedException(BluetoothOperation::kGATT));
return;
}
if (result == mojom::blink::WebBluetoothResult::SUCCESS) {
value_ = BluetoothRemoteGATTUtils::ConvertSpanToDataView(value);
resolver->Resolve(value_);
} else {
resolver->Reject(BluetoothError::CreateDOMException(result));
}
}
ScriptPromise<NotShared<DOMDataView>> BluetoothRemoteGATTDescriptor::readValue(
ScriptState* script_state,
ExceptionState& exception_state) {
if (!GetGatt()->connected() || !GetBluetooth()->IsServiceBound()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNetworkError,
BluetoothError::CreateNotConnectedExceptionMessage(
BluetoothOperation::kGATT));
return ScriptPromise<NotShared<DOMDataView>>();
}
if (!GetGatt()->device()->IsValidDescriptor(descriptor_->instance_id)) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
CreateInvalidDescriptorErrorMessage());
return ScriptPromise<NotShared<DOMDataView>>();
}
auto* resolver =
MakeGarbageCollected<ScriptPromiseResolver<NotShared<DOMDataView>>>(
script_state, exception_state.GetContext());
auto promise = resolver->Promise();
GetGatt()->AddToActiveAlgorithms(resolver);
GetBluetooth()->Service()->RemoteDescriptorReadValue(
descriptor_->instance_id,
WTF::BindOnce(&BluetoothRemoteGATTDescriptor::ReadValueCallback,
WrapPersistent(this), WrapPersistent(resolver)));
return promise;
}
void BluetoothRemoteGATTDescriptor::WriteValueCallback(
ScriptPromiseResolver<IDLUndefined>* resolver,
DOMDataView* new_value,
mojom::blink::WebBluetoothResult result) {
if (!resolver->GetExecutionContext() ||
resolver->GetExecutionContext()->IsContextDestroyed())
return;
// If the resolver is not in the set of ActiveAlgorithms then the frame
// disconnected so we reject.
if (!GetGatt()->RemoveFromActiveAlgorithms(resolver)) {
resolver->Reject(
BluetoothError::CreateNotConnectedException(BluetoothOperation::kGATT));
return;
}
if (result == mojom::blink::WebBluetoothResult::SUCCESS) {
value_ = NotShared(new_value);
resolver->Resolve();
} else {
resolver->Reject(BluetoothError::CreateDOMException(result));
}
}
ScriptPromise<IDLUndefined> BluetoothRemoteGATTDescriptor::writeValue(
ScriptState* script_state,
base::span<const uint8_t> value,
ExceptionState& exception_state) {
if (!GetGatt()->connected() || !GetBluetooth()->IsServiceBound()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNetworkError,
BluetoothError::CreateNotConnectedExceptionMessage(
BluetoothOperation::kGATT));
return EmptyPromise();
}
if (!GetGatt()->device()->IsValidDescriptor(descriptor_->instance_id)) {
exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
CreateInvalidDescriptorErrorMessage());
return EmptyPromise();
}
// Partial implementation of writeValue algorithm:
// https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattdescriptor-writevalue
// If bytes is more than 512 bytes long (the maximum length of an attribute
// value, per Long Attribute Values) return a promise rejected with an
// InvalidModificationError and abort.
if (value.size() > 512) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidModificationError,
"Value can't exceed 512 bytes.");
return EmptyPromise();
}
// Let newValue be a copy of the bytes held by value.
NotShared<DOMDataView> new_value =
BluetoothRemoteGATTUtils::ConvertSpanToDataView(value);
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver<IDLUndefined>>(
script_state, exception_state.GetContext());
auto promise = resolver->Promise();
GetGatt()->AddToActiveAlgorithms(resolver);
GetBluetooth()->Service()->RemoteDescriptorWriteValue(
descriptor_->instance_id, value,
WTF::BindOnce(&BluetoothRemoteGATTDescriptor::WriteValueCallback,
WrapPersistent(this), WrapPersistent(resolver),
WrapPersistent(new_value.Get())));
return promise;
}
String BluetoothRemoteGATTDescriptor::CreateInvalidDescriptorErrorMessage() {
return "Descriptor with UUID " + uuid() +
" is no longer valid. Remember to retrieve the Descriptor again "
"after reconnecting.";
}
void BluetoothRemoteGATTDescriptor::Trace(Visitor* visitor) const {
visitor->Trace(characteristic_);
visitor->Trace(value_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
|
