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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "modules/webusb/USBInterface.h" |
| 7 |
| 8 #include "bindings/core/v8/ExceptionState.h" |
| 9 #include "modules/webusb/USBAlternateInterface.h" |
| 10 #include "modules/webusb/USBConfiguration.h" |
| 11 |
| 12 namespace blink { |
| 13 |
| 14 // static |
| 15 USBInterface* USBInterface::create(const USBConfiguration* configuration, size_t
interfaceIndex) |
| 16 { |
| 17 return new USBInterface(configuration, interfaceIndex); |
| 18 } |
| 19 |
| 20 // static |
| 21 USBInterface* USBInterface::create(const USBConfiguration* configuration, size_t
interfaceIndex, ExceptionState& exceptionState) |
| 22 { |
| 23 if (interfaceIndex < configuration->info().interfaces.size()) |
| 24 return new USBInterface(configuration, interfaceIndex); |
| 25 exceptionState.throwRangeError("Invalid interface index."); |
| 26 return nullptr; |
| 27 } |
| 28 |
| 29 USBInterface::USBInterface(const USBConfiguration* configuration, size_t interfa
ceIndex) |
| 30 : m_configuration(configuration) |
| 31 , m_interfaceIndex(interfaceIndex) |
| 32 { |
| 33 } |
| 34 |
| 35 const WebUSBDeviceInfo::Interface& USBInterface::info() const |
| 36 { |
| 37 const WebUSBDeviceInfo::Configuration& configInfo = m_configuration->info(); |
| 38 ASSERT(m_interfaceIndex < configInfo.interfaces.size()); |
| 39 return configInfo.interfaces[m_interfaceIndex]; |
| 40 } |
| 41 |
| 42 uint8_t USBInterface::interfaceNumber() const |
| 43 { |
| 44 return info().interfaceNumber; |
| 45 } |
| 46 |
| 47 HeapVector<Member<USBAlternateInterface>> USBInterface::alternates() const |
| 48 { |
| 49 HeapVector<Member<USBAlternateInterface>> alternates; |
| 50 for (size_t i = 0; i < info().alternates.size(); ++i) |
| 51 alternates.append(USBAlternateInterface::create(this, i)); |
| 52 return alternates; |
| 53 } |
| 54 |
| 55 DEFINE_TRACE(USBInterface) |
| 56 { |
| 57 visitor->trace(m_configuration); |
| 58 } |
| 59 |
| 60 } // namespace blink |
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