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// 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/webusb/USBAlternateInterface.h"
#include "bindings/core/v8/ExceptionState.h"
#include "modules/webusb/USBEndpoint.h"
#include "modules/webusb/USBInterface.h"
namespace blink {
USBAlternateInterface* USBAlternateInterface::create(
const USBInterface* interface,
size_t alternateIndex) {
return new USBAlternateInterface(interface, alternateIndex);
}
USBAlternateInterface* USBAlternateInterface::create(
const USBInterface* interface,
size_t alternateSetting,
ExceptionState& exceptionState) {
const auto& alternates = interface->info().alternates;
for (size_t i = 0; i < alternates.size(); ++i) {
if (alternates[i]->alternate_setting == alternateSetting)
return USBAlternateInterface::create(interface, i);
}
exceptionState.throwRangeError("Invalid alternate setting.");
return nullptr;
}
USBAlternateInterface::USBAlternateInterface(const USBInterface* interface,
size_t alternateIndex)
: m_interface(interface), m_alternateIndex(alternateIndex) {
ASSERT(m_interface);
ASSERT(m_alternateIndex < m_interface->info().alternates.size());
}
const device::usb::blink::AlternateInterfaceInfo& USBAlternateInterface::info()
const {
const device::usb::blink::InterfaceInfo& interfaceInfo = m_interface->info();
ASSERT(m_alternateIndex < interfaceInfo.alternates.size());
return *interfaceInfo.alternates[m_alternateIndex];
}
HeapVector<Member<USBEndpoint>> USBAlternateInterface::endpoints() const {
HeapVector<Member<USBEndpoint>> endpoints;
for (size_t i = 0; i < info().endpoints.size(); ++i)
endpoints.push_back(USBEndpoint::create(this, i));
return endpoints;
}
DEFINE_TRACE(USBAlternateInterface) {
visitor->trace(m_interface);
}
} // namespace blink
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