| // 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 alternate_index) { |
| return new USBAlternateInterface(interface, alternate_index); |
| } |
| |
| USBAlternateInterface* USBAlternateInterface::Create( |
| const USBInterface* interface, |
| size_t alternate_setting, |
| ExceptionState& exception_state) { |
| const auto& alternates = interface->Info().alternates; |
| for (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, |
| size_t alternate_index) |
| : interface_(interface), alternate_index_(alternate_index) { |
| ASSERT(interface_); |
| ASSERT(alternate_index_ < interface_->Info().alternates.size()); |
| } |
| |
| const device::mojom::blink::UsbAlternateInterfaceInfo& |
| USBAlternateInterface::Info() const { |
| const device::mojom::blink::UsbInterfaceInfo& interface_info = |
| interface_->Info(); |
| ASSERT(alternate_index_ < interface_info.alternates.size()); |
| return *interface_info.alternates[alternate_index_]; |
| } |
| |
| 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(interface_); |
| } |
| |
| } // namespace blink |