Migrating majority of gamepad from content/browser/ to device/

content/browser/gamepad/gamepad_platform_data_fetcher_mac.h

-// Copyright (c) 2012 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.
-
-#ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_
-#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <IOKit/hid/IOHIDManager.h>
-#include <stddef.h>
-
-#include <memory>
-
-#include "base/compiler_specific.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/macros.h"
-#include "build/build_config.h"
-#include "content/browser/gamepad/gamepad_data_fetcher.h"
-#include "content/browser/gamepad/xbox_data_fetcher_mac.h"
-#include "content/common/gamepad_hardware_buffer.h"
-
-#if defined(__OBJC__)
-@class NSArray;
-#else
-class NSArray;
-#endif
-
-namespace content {
-
-class GamepadPlatformDataFetcherMac : public GamepadDataFetcher,
-                                      public XboxDataFetcher::Delegate {
- public:
-  GamepadPlatformDataFetcherMac();
-  ~GamepadPlatformDataFetcherMac() override;
-  void GetGamepadData(blink::WebGamepads* pads,
-                      bool devices_changed_hint) override;
-  void PauseHint(bool paused) override;
-
- private:
-  bool enabled_;
-  bool paused_;
-  base::ScopedCFTypeRef<IOHIDManagerRef> hid_manager_ref_;
-
-  static GamepadPlatformDataFetcherMac* InstanceFromContext(void* context);
-  static void DeviceAddCallback(void* context,
-                                IOReturn result,
-                                void* sender,
-                                IOHIDDeviceRef ref);
-  static void DeviceRemoveCallback(void* context,
-                                   IOReturn result,
-                                   void* sender,
-                                   IOHIDDeviceRef ref);
-  static void ValueChangedCallback(void* context,
-                                   IOReturn result,
-                                   void* sender,
-                                   IOHIDValueRef ref);
-
-  size_t GetEmptySlot();
-  size_t GetSlotForDevice(IOHIDDeviceRef device);
-  size_t GetSlotForXboxDevice(XboxController* device);
-
-  void DeviceAdd(IOHIDDeviceRef device);
-  bool CheckCollection(IOHIDElementRef element);
-  bool AddButtonsAndAxes(NSArray* elements, size_t slot);
-  void DeviceRemove(IOHIDDeviceRef device);
-  void ValueChanged(IOHIDValueRef value);
-
-  void XboxDeviceAdd(XboxController* device) override;
-  void XboxDeviceRemove(XboxController* device) override;
-  void XboxValueChanged(XboxController* device,
-                        const XboxController::Data& data) override;
-
-  void RegisterForNotifications();
-  void UnregisterFromNotifications();
-
-  void SanitizeGamepadData(size_t index, blink::WebGamepad* pad);
-
-  std::unique_ptr<XboxDataFetcher> xbox_fetcher_;
-
-  // Side-band data that's not passed to the consumer, but we need to maintain
-  // to update data_.
-  struct AssociatedData {
-    bool is_xbox;
-    union {
-      struct {
-        IOHIDDeviceRef device_ref;
-        IOHIDElementRef button_elements[blink::WebGamepad::buttonsLengthCap];
-        IOHIDElementRef axis_elements[blink::WebGamepad::axesLengthCap];
-        CFIndex axis_minimums[blink::WebGamepad::axesLengthCap];
-        CFIndex axis_maximums[blink::WebGamepad::axesLengthCap];
-        CFIndex axis_report_sizes[blink::WebGamepad::axesLengthCap];
-      } hid;
-      struct {
-        XboxController* device;
-        UInt32 location_id;
-      } xbox;
-    };
-  };
-  AssociatedData associated_[blink::WebGamepads::itemsLengthCap];
-
-  DISALLOW_COPY_AND_ASSIGN(GamepadPlatformDataFetcherMac);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_