extensions/common/api/printer_provider/usb_printer_manifest_data.cc

// 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 "extensions/common/api/printer_provider/usb_printer_manifest_data.h"

#include "base/strings/utf_string_conversions.h"
#include "device/usb/usb_device_filter.h"
#include "extensions/common/api/extensions_manifest_types.h"
#include "extensions/common/manifest_constants.h"

namespace extensions {

UsbPrinterManifestData::UsbPrinterManifestData() {
}

UsbPrinterManifestData::~UsbPrinterManifestData() {
}

// static
const UsbPrinterManifestData* UsbPrinterManifestData::Get(
    const Extension* extension) {
  return static_cast<UsbPrinterManifestData*>(
      extension->GetManifestData(manifest_keys::kUsbPrinters));
}

// static
scoped_ptr<UsbPrinterManifestData> UsbPrinterManifestData::FromValue(
    const base::Value& value,
    base::string16* error) {
  scoped_ptr<core_api::extensions_manifest_types::UsbPrinters> usb_printers =
      core_api::extensions_manifest_types::UsbPrinters::FromValue(value, error);
  if (!usb_printers) {
    return nullptr;
  }

  scoped_ptr<UsbPrinterManifestData> result(new UsbPrinterManifestData());
  for (const auto& input : usb_printers->filters) {
    DCHECK(input.get());
    device::UsbDeviceFilter output;
    output.SetVendorId(input->vendor_id);
    if (input->product_id && input->interface_class) {
      *error = base::ASCIIToUTF16(
          "Only one of productId or interfaceClass may be specified.");
      return nullptr;
    }
    if (input->product_id) {
      output.SetProductId(*input->product_id);
    }
    if (input->interface_class) {
      output.SetInterfaceClass(*input->interface_class);
      if (input->interface_subclass) {
        output.SetInterfaceSubclass(*input->interface_subclass);
        if (input->interface_protocol) {
          output.SetInterfaceProtocol(*input->interface_protocol);
        }
      }
    }
    result->filters_.push_back(output);
  }
  return result.Pass();
}

}  // namespace extensions