Implement WebBluetooth descriptor.readValue()

third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTService.cpp

 // Copyright 2015 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.
 
 #include "modules/bluetooth/BluetoothRemoteGATTService.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
@@ skipping 39 matching lines @@
     const String& serviceInstanceId,
     mojom::blink::WebBluetoothGATTQueryQuantity quantity,
     ScriptPromiseResolver* resolver,
     mojom::blink::WebBluetoothResult result,
     Optional<Vector<mojom::blink::WebBluetoothRemoteGATTCharacteristicPtr>>
         characteristics) {
   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 the device is disconnected, reject.
   if (!device()->gatt()->RemoveFromActiveAlgorithms(resolver)) {
     resolver->reject(
         DOMException::create(NetworkError, kGATTServerDisconnected));
     return;
   }
 
   if (result == mojom::blink::WebBluetoothResult::SUCCESS) {
     DCHECK(characteristics);
 
     if (quantity == mojom::blink::WebBluetoothGATTQueryQuantity::SINGLE) {
@@ skipping 50 matching lines @@
     ScriptState* scriptState,
     ExceptionState&) {
   return getCharacteristicsImpl(
       scriptState, mojom::blink::WebBluetoothGATTQueryQuantity::MULTIPLE);
 }
 
 ScriptPromise BluetoothRemoteGATTService::getCharacteristicsImpl(
     ScriptState* scriptState,
     mojom::blink::WebBluetoothGATTQueryQuantity quantity,
     const String& characteristicsUUID) {
-  // We always check that the device is connected.
   if (!device()->gatt()->connected()) {
     return ScriptPromise::rejectWithDOMException(
         scriptState,
         DOMException::create(NetworkError, kGATTServerNotConnected));
   }
 
   if (!device()->isValidService(m_service->instance_id)) {
     return ScriptPromise::rejectWithDOMException(
         scriptState, DOMException::create(InvalidStateError, kInvalidService));
   }
@@ skipping 11 matching lines @@
       m_service->instance_id, quantity, uuid,
       convertToBaseCallback(
           WTF::bind(&BluetoothRemoteGATTService::GetCharacteristicsCallback,
                     wrapPersistent(this), m_service->instance_id, quantity,
                     wrapPersistent(resolver))));
 
   return promise;
 }
 
 }  // namespace blink