src/extensions/browser/api/usb/usb_device_resource.h

   1 // Copyright 2014 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 #ifndef EXTENSIONS_BROWSER_API_USB_USB_DEVICE_RESOURCE_H_
   6 #define EXTENSIONS_BROWSER_API_USB_USB_DEVICE_RESOURCE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/synchronization/lock.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "device/usb/usb_device_handle.h"
  15 #include "extensions/browser/api/api_resource.h"
  16 #include "extensions/browser/api/api_resource_manager.h"
  17
  18 namespace usb_service {
  19 class UsbDeviceHandle;
  20 }
  21
  22 namespace extensions {
  23
  24 // A UsbDeviceResource is an ApiResource wrapper for a UsbDevice.
  25 class UsbDeviceResource : public ApiResource {
  26  public:
  27   static const content::BrowserThread::ID kThreadId =
  28       content::BrowserThread::FILE;
  29
  30   UsbDeviceResource(const std::string& owner_extension_id,
  31                     scoped_refptr<device::UsbDeviceHandle> device);
  32   virtual ~UsbDeviceResource();
  33
  34   scoped_refptr<device::UsbDeviceHandle> device() { return device_; }
  35
  36   virtual bool IsPersistent() const OVERRIDE;
  37
  38  private:
  39   friend class ApiResourceManager<UsbDeviceResource>;
  40   static const char* service_name() { return "UsbDeviceResourceManager"; }
  41
  42   scoped_refptr<device::UsbDeviceHandle> device_;
  43
  44   DISALLOW_COPY_AND_ASSIGN(UsbDeviceResource);
  45 };
  46
  47 }  // namespace extensions
  48
  49 #endif  // EXTENSIONS_BROWSER_API_USB_USB_DEVICE_RESOURCE_H_