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// Copyright 2015 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/webusb/usb_alternate_interface.h"
#include "third_party/blink/renderer/modules/webusb/usb_endpoint.h"
#include "third_party/blink/renderer/modules/webusb/usb_interface.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
namespace blink {
USBAlternateInterface* USBAlternateInterface::Create(
const USBInterface* interface,
wtf_size_t alternate_index) {
return MakeGarbageCollected<USBAlternateInterface>(interface,
alternate_index);
}
USBAlternateInterface* USBAlternateInterface::Create(
const USBInterface* interface,
uint8_t alternate_setting,
ExceptionState& exception_state) {
const auto& alternates = interface->Info().alternates;
for (wtf_size_t i = 0; i < alternates.size(); ++i) {
if (alternates[i]->alternate_setting == alternate_setting)
return USBAlternateInterface::Create(interface, i);
}
exception_state.ThrowRangeError("Invalid alternate setting.");
return nullptr;
}
USBAlternateInterface::USBAlternateInterface(const USBInterface* interface,
wtf_size_t alternate_index)
: interface_(interface), alternate_index_(alternate_index) {
DCHECK(interface_);
DCHECK_LT(alternate_index_, interface_->Info().alternates.size());
for (wtf_size_t i = 0; i < Info().endpoints.size(); ++i) {
// Filter out control endpoints because there is no corresponding enum value
// defined in WebUSB.
if (Info().endpoints[i]->type !=
device::mojom::blink::UsbTransferType::CONTROL) {
endpoints_.push_back(USBEndpoint::Create(this, i));
}
}
}
const device::mojom::blink::UsbAlternateInterfaceInfo&
USBAlternateInterface::Info() const {
const device::mojom::blink::UsbInterfaceInfo& interface_info =
interface_->Info();
DCHECK_LT(alternate_index_, interface_info.alternates.size());
return *interface_info.alternates[alternate_index_];
}
HeapVector<Member<USBEndpoint>> USBAlternateInterface::endpoints() const {
return endpoints_;
}
void USBAlternateInterface::Trace(Visitor* visitor) const {
visitor->Trace(interface_);
visitor->Trace(endpoints_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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