extensions/browser/api/hid/hid_device_manager.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_HID_HID_DEVICE_MANAGER_H_
   6 #define EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_
   7
   8 #include <stdint.h>
   9
  10 #include <map>
  11
  12 #include "base/basictypes.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/threading/thread_checker.h"
  15 #include "device/hid/hid_device_info.h"
  16 #include "extensions/browser/browser_context_keyed_api_factory.h"
  17 #include "extensions/common/api/hid.h"
  18
  19 namespace extensions {
  20
  21 class HidDeviceManager : public BrowserContextKeyedAPI {
  22  public:
  23   explicit HidDeviceManager(content::BrowserContext* context);
  24   virtual ~HidDeviceManager();
  25
  26   // BrowserContextKeyedAPI implementation.
  27   static BrowserContextKeyedAPIFactory<HidDeviceManager>* GetFactoryInstance();
  28
  29   // Convenience method to get the HidDeviceManager for a profile.
  30   static HidDeviceManager* Get(content::BrowserContext* context) {
  31     return BrowserContextKeyedAPIFactory<HidDeviceManager>::Get(context);
  32   }
  33
  34   scoped_ptr<base::ListValue> GetApiDevices(uint16_t vendor_id,
  35                                             uint16_t product_id);
  36
  37   bool GetDeviceInfo(int resource_id, device::HidDeviceInfo* device_info);
  38
  39  private:
  40   friend class BrowserContextKeyedAPIFactory<HidDeviceManager>;
  41
  42   static const char* service_name() { return "HidDeviceManager"; }
  43
  44   void UpdateDevices();
  45
  46   base::ThreadChecker thread_checker_;
  47
  48   int next_resource_id_;
  49
  50   typedef std::map<int, device::HidDeviceId> ResourceIdToDeviceIdMap;
  51   typedef std::map<device::HidDeviceId, int> DeviceIdToResourceIdMap;
  52
  53   ResourceIdToDeviceIdMap device_ids_;
  54   DeviceIdToResourceIdMap resource_ids_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(HidDeviceManager);
  57 };
  58
  59 }  // namespace extensions
  60
  61 #endif  // EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_