content/browser/cocoa/system_hotkey_helper_mac.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 CONTENT_BROWSER_COCOA_SYSTEM_HOTKEY_HELPER_MAC_H_
   6 #define CONTENT_BROWSER_COCOA_SYSTEM_HOTKEY_HELPER_MAC_H_
   7
   8 #include "base/memory/singleton.h"
   9 #include "base/memory/weak_ptr.h"
  10
  11 #ifdef __OBJC__
  12 @class NSDictionary;
  13 #else
  14 class NSDictionary;
  15 #endif
  16
  17 namespace content {
  18
  19 class SystemHotkeyMap;
  20
  21 // This singleton holds a global mapping of hotkeys reserved by OSX.
  22 class SystemHotkeyHelperMac {
  23  public:
  24   // Return pointer to the singleton instance for the current process.
  25   static SystemHotkeyHelperMac* GetInstance();
  26
  27   // Loads the system hot keys after a brief delay, to reduce file system access
  28   // immediately after launch.
  29   void DeferredLoadSystemHotkeys();
  30
  31   // Guaranteed to not be NULL.
  32   SystemHotkeyMap* map() { return map_.get(); }
  33
  34  private:
  35   friend struct base::DefaultSingletonTraits<SystemHotkeyHelperMac>;
  36
  37   SystemHotkeyHelperMac();
  38   ~SystemHotkeyHelperMac();
  39
  40   // Must be called from the FILE thread. Loads the file containing the system
  41   // hotkeys into a NSDictionary* object, and passes the result to FileDidLoad
  42   // on the UI thread.
  43   void LoadSystemHotkeys();
  44
  45   // Must be called from the UI thread.  This takes ownership of |dictionary|.
  46   // Parses the system hotkeys from the plist stored in |dictionary|.
  47   void FileDidLoad(NSDictionary* dictionary);
  48
  49   scoped_ptr<SystemHotkeyMap> map_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(SystemHotkeyHelperMac);
  52 };
  53
  54 }  // namespace content
  55
  56 #endif  // CONTENT_BROWSER_COCOA_SYSTEM_HOTKEY_HELPER_MAC_H_