Implement WebBluetooth descriptor.readValue()

third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTServer.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/BluetoothRemoteGATTServer.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
@@ skipping 88 matching lines @@
 // with a vector owning the services.
 void BluetoothRemoteGATTServer::GetPrimaryServicesCallback(
     mojom::blink::WebBluetoothGATTQueryQuantity quantity,
     ScriptPromiseResolver* resolver,
     mojom::blink::WebBluetoothResult result,
     Optional<Vector<mojom::blink::WebBluetoothRemoteGATTServicePtr>> services) {
   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 (!RemoveFromActiveAlgorithms(resolver)) {
     resolver->reject(
         DOMException::create(NetworkError, kGATTServerDisconnected));
     return;
   }
 
   if (result == mojom::blink::WebBluetoothResult::SUCCESS) {
     DCHECK(services);
 
     if (quantity == mojom::blink::WebBluetoothGATTQueryQuantity::SINGLE) {
@@ skipping 47 matching lines @@
     ScriptState* scriptState,
     ExceptionState&) {
   return getPrimaryServicesImpl(
       scriptState, mojom::blink::WebBluetoothGATTQueryQuantity::MULTIPLE);
 }
 
 ScriptPromise BluetoothRemoteGATTServer::getPrimaryServicesImpl(
     ScriptState* scriptState,
     mojom::blink::WebBluetoothGATTQueryQuantity quantity,
     String servicesUUID) {
-  // We always check that the device is connected.
   if (!connected()) {
     return ScriptPromise::rejectWithDOMException(
         scriptState,
         DOMException::create(NetworkError, kGATTServerNotConnected));
   }
 
   ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
   ScriptPromise promise = resolver->promise();
   AddToActiveAlgorithms(resolver);
 
   mojom::blink::WebBluetoothService* service = m_device->bluetooth()->service();
   WTF::Optional<String> uuid = WTF::nullopt;
   if (!servicesUUID.isEmpty())
     uuid = servicesUUID;
 
   service->RemoteServerGetPrimaryServices(
       device()->id(), quantity, uuid,
       convertToBaseCallback(
           WTF::bind(&BluetoothRemoteGATTServer::GetPrimaryServicesCallback,
                     wrapPersistent(this), quantity, wrapPersistent(resolver))));
   return promise;
 }
 
 }  // namespace blink