Support for re-type the shortcut in MACShortcutView

Framework/MASHotKey.h

@@ -8,5 +8,7 @@ extern FourCharCode const MASHotKeySignature;
 @property(copy) dispatch_block_t action;
 
 + (instancetype) registeredHotKeyWithShortcut: (MASShortcut*) shortcut;
+- (BOOL) activate;
+- (void) deactivate;
 
 @end

Framework/MASHotKey.m

@@ -5,6 +5,8 @@
 @interface MASHotKey ()
 @property(assign) EventHotKeyRef hotKeyRef;
 @property(assign) UInt32 carbonID;
+@property(assign) UInt32 carbonKeyCode;
+@property(assign) UInt32 carbonFlags;
 @end
 
 @implementation MASHotKey
@@ -16,14 +18,11 @@ - (instancetype) initWithShortcut: (MASShortcut*) shortcut
     static UInt32 CarbonHotKeyID = 0;
 
     _carbonID = ++CarbonHotKeyID;
-    EventHotKeyID hotKeyID = { .signature = MASHotKeySignature, .id = _carbonID };
-
-    OSStatus status = RegisterEventHotKey([shortcut carbonKeyCode], [shortcut carbonFlags],
-        hotKeyID, GetEventDispatcherTarget(), 0, &_hotKeyRef);
-
-    if (status != noErr) {
+    _carbonKeyCode = [shortcut carbonKeyCode];
+    _carbonFlags = [shortcut carbonFlags];
+
+    if (![self activate])
         return nil;
-    }
 
     return self;
 }
@@ -35,6 +34,20 @@ + (instancetype) registeredHotKeyWithShortcut: (MASShortcut*) shortcut
 
 - (void) dealloc
 {
+    [self deactivate];
+}
+
+- (BOOL) activate {
+    if (_hotKeyRef)
+        return YES;
+
+    EventHotKeyID hotKeyID = { .signature = MASHotKeySignature, .id = _carbonID };
+    OSStatus status = RegisterEventHotKey(_carbonKeyCode, _carbonFlags, hotKeyID,
+                                          GetEventDispatcherTarget(), 0, &_hotKeyRef);
+    return status == noErr;
+}
+
+- (void) deactivate {
     if (_hotKeyRef) {
         UnregisterEventHotKey(_hotKeyRef);
         _hotKeyRef = NULL;

Framework/MASShortcutMonitor.h

@@ -24,4 +24,6 @@
 - (void) unregisterShortcut: (MASShortcut*) shortcut;
 - (void) unregisterAllShortcuts;
 
+- (void) setShortcut: (MASShortcut*) shortcut active: (BOOL) active;
+
 @end

Framework/MASShortcutMonitor.m

@@ -74,6 +74,12 @@ - (BOOL) isShortcutRegistered: (MASShortcut*) shortcut
     return !![_hotKeys objectForKey:shortcut];
 }
 
+- (void) setShortcut: (MASShortcut*) shortcut active: (BOOL) active
+{
+    MASHotKey *hotKey = [_hotKeys objectForKey:shortcut];
+    active ? [hotKey activate] : [hotKey deactivate];
+}
+
 #pragma mark Event Handling
 
 - (void) handleEvent: (EventRef) event

Framework/MASShortcutView.m

@@ -1,5 +1,6 @@
 #import "MASShortcutView.h"
 #import "MASShortcutValidator.h"
+#import "MASShortcutMonitor.h"
 #import "MASLocalization.h"
 
 NSString *const MASShortcutBinding = @"shortcutValue";
@@ -136,6 +137,7 @@ - (void)setRecording:(BOOL)flag
     [self activateEventMonitoring:_recording];
     [self activateResignObserver:_recording];
     [self setNeedsDisplay:YES];
+    [[MASShortcutMonitor sharedMonitor] setShortcut:[self shortcutValue] active:!flag];
 
     // Give VoiceOver users feedback on the result. Requires at least 10.9 to run.
     // We’re silencing the “tautological compare” warning here so that if someone