Try to get headphone button events

Try to set up a listener for headphone button events. Doesn't appear to
work. The initialiser is called, but the delegate method doesn't appear
to be. I'm not seeing any of those log messages.

Followed an example from here:
https://github.com/radiant-player/radiant-player-mac/pull/450/files

Not sure what I'm doing wrong yet, but decided I should commit what I
have since I can't figure it out right now.

3 files changed, 32 insertions, 1 deletions

diff --git a/DomeKey/HeadphoneKey.h b/DomeKey/HeadphoneKey.h
index 6bcca4a..16e74b2 100644
--- a/DomeKey/HeadphoneKey.h
+++ b/DomeKey/HeadphoneKey.h
@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 #import <DDHidLib/DDHidAppleMikey.h>
 
-@interface HeadphoneKey : NSObject
+@interface HeadphoneKey : NSObject {
+    NSArray *_mikeys;
+}
 
 @end
diff --git a/DomeKey/HeadphoneKey.m b/DomeKey/HeadphoneKey.m
index af3b94c..c01d2c5 100644
--- a/DomeKey/HeadphoneKey.m
+++ b/DomeKey/HeadphoneKey.m
@@ -10,4 +10,28 @@
 
 @implementation HeadphoneKey
 
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _mikeys = [DDHidAppleMikey allMikeys];
+        [_mikeys makeObjectsPerformSelector:@selector(setDelegate:)
+            withObject:self];
+        [_mikeys makeObjectsPerformSelector:@selector(setListenInExclusiveMode:)
+            withObject:(id)kCFBooleanTrue];
+        [_mikeys makeObjectsPerformSelector:@selector(startListening)];
+    }
+    return self;
+}
+
+- (void)ddhidAppleMikey:(DDHidAppleMikey *)mikey
+                  press:(unsigned)usageId
+               upOrDown:(BOOL)upOrDown
+{
+    NSLog(@"Clicked");
+    NSLog(@"%d", usageId);
+    NSLog(@"%@", mikey);
+    NSLog(@"%d", upOrDown);
+}
+
 @end
diff --git a/DomeKey/main.m b/DomeKey/main.m
index e0eea29..27df36e 100644
--- a/DomeKey/main.m
+++ b/DomeKey/main.m
@@ -7,11 +7,16 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "HeadphoneKey.h"
 
 int main(int argc, const char * argv[]) {
     @autoreleasepool {
         // insert code here...
         NSLog(@"Hello, World!");
+
+        HeadphoneKey *h = [[HeadphoneKey alloc] init];
+        while (YES) {
+        }
     }
     return 0;
 }