Classes/NJHIDManager.h

   1 #import <Foundation/Foundation.h>
   2 #import <IOKit/hid/IOHIDLib.h>
   3
   4 @protocol NJHIDManagerDelegate;
   5
   6 @interface NJHIDManager : NSObject
   7     // Light OO wrapper around IOKit callbacks.
   8
   9 - (id)initWithCriteria:(NSArray *)criteria
  10               delegate:(id <NJHIDManagerDelegate>)delegate;
  11
  12 @property (nonatomic, weak) id <NJHIDManagerDelegate> delegate;
  13
  14 @property (nonatomic, copy) NSArray *criteria;
  15     // Changing the criteria may trigger a stop and restart. If this
  16     // happens, messages will be sent to the delegate as usual.
  17
  18 @property (nonatomic, assign) BOOL running;
  19     // Assigning YES is like sending start; NO like stop.
  20
  21 - (void)start;
  22 - (void)stop;
  23
  24 @end
  25
  26 @protocol NJHIDManagerDelegate
  27
  28 - (void)HIDManagerDidStart:(NJHIDManager *)manager;
  29 - (void)HIDManagerDidStop:(NJHIDManager *)manager;
  30     // Stopping the device will not trigger any removal messages, so any
  31     // cleanup in the delegate must be done here.
  32
  33 - (void)HIDManager:(NJHIDManager *)manager deviceAdded:(IOHIDDeviceRef)device;
  34 - (void)HIDManager:(NJHIDManager *)manager deviceRemoved:(IOHIDDeviceRef)device;
  35
  36 - (void)HIDManager:(NJHIDManager *)manager valueChanged:(IOHIDValueRef)value;
  37
  38 - (void)HIDManager:(NJHIDManager *)manager didError:(NSError *)error;
  39
  40 @end