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/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/threading/thread_checker.h"
  16 #include "device/hid/hid_device_info.h"
  17 #include "extensions/browser/browser_context_keyed_api_factory.h"
  18 #include "extensions/common/api/hid.h"
  19
  20 namespace device {
  21 class HidDeviceFilter;
  22 }
  23
  24 namespace extensions {
  25
  26 class Extension;
  27
  28 class HidDeviceManager : public BrowserContextKeyedAPI {
  29  public:
  30   explicit HidDeviceManager(content::BrowserContext* context);
  31   virtual ~HidDeviceManager();
  32
  33   // BrowserContextKeyedAPI implementation.
  34   static BrowserContextKeyedAPIFactory<HidDeviceManager>* GetFactoryInstance();
  35
  36   // Convenience method to get the HidDeviceManager for a profile.
  37   static HidDeviceManager* Get(content::BrowserContext* context) {
  38     return BrowserContextKeyedAPIFactory<HidDeviceManager>::Get(context);
  39   }
  40
  41   scoped_ptr<base::ListValue> GetApiDevices(
  42       const Extension* extension,
  43       const std::vector<device::HidDeviceFilter>& filters);
  44
  45   bool GetDeviceInfo(int resource_id, device::HidDeviceInfo* device_info);
  46
  47   bool HasPermission(const Extension* extension,
  48                      const device::HidDeviceInfo& device_info);
  49
  50  private:
  51   friend class BrowserContextKeyedAPIFactory<HidDeviceManager>;
  52
  53   static const char* service_name() { return "HidDeviceManager"; }
  54
  55   void UpdateDevices();
  56
  57   base::ThreadChecker thread_checker_;
  58
  59   int next_resource_id_;
  60
  61   typedef std::map<int, device::HidDeviceId> ResourceIdToDeviceIdMap;
  62   typedef std::map<device::HidDeviceId, int> DeviceIdToResourceIdMap;
  63
  64   ResourceIdToDeviceIdMap device_ids_;
  65   DeviceIdToResourceIdMap resource_ids_;
  66
  67   DISALLOW_COPY_AND_ASSIGN(HidDeviceManager);
  68 };
  69
  70 }  // namespace extensions
  71
  72 #endif  // EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_