macosx: Use dot notation to acces NSNotificationCenter defaultCenter

Signed-off-by: Claudio Cambra <developer@claudiocambra.com>

modules/gui/macosx/library/VLCInputItem.m

@@ -518,7 +518,7 @@ static const struct vlc_metadata_cbs preparseCallbacks = {
 
 - (void)parsingEnded:(int)status
 {
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     if (status) {
         [notificationCenter postNotificationName:VLCInputItemParsingSucceeded object:self];
     } else {
@@ -546,7 +546,7 @@ static const struct vlc_metadata_cbs preparseCallbacks = {
 
 - (void)preparsingEnded:(enum input_item_preparse_status)status
 {
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     switch (status) {
         case ITEM_PREPARSE_SKIPPED:
             [notificationCenter postNotificationName:VLCInputItemPreparsingSkipped object:self];
@@ -582,7 +582,7 @@ static const struct vlc_metadata_cbs preparseCallbacks = {
 - (void)subTreeAdded:(input_item_node_t *)p_node
 {
     _subTree = p_node;
-    [[NSNotificationCenter defaultCenter] postNotificationName:VLCInputItemSubtreeAdded object:self];
+    [NSNotificationCenter.defaultCenter postNotificationName:VLCInputItemSubtreeAdded object:self];
 }
 
 - (int)writeMetadataToFile

modules/gui/macosx/library/VLCLibraryCollectionViewItem.m

@@ -94,7 +94,7 @@ const CGFloat VLCLibraryCollectionViewItemMaximumDisplayedProgress = 0.95;
 {
     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
     if (self) {
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(mediaItemThumbnailGenerated:)
                                    name:VLCLibraryModelMediaItemThumbnailGenerated
@@ -105,7 +105,7 @@ const CGFloat VLCLibraryCollectionViewItemMaximumDisplayedProgress = 0.95;
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
     if (@available(macOS 10.14, *)) {
         [NSApplication.sharedApplication removeObserver:self forKeyPath:@"effectiveAppearance"];
     }

modules/gui/macosx/library/VLCLibraryController.m

@@ -50,7 +50,7 @@
         _libraryModel = [[VLCLibraryModel alloc] initWithLibrary:_p_libraryInstance];
         _unsorted = YES;
 
-        NSNotificationCenter *defaultNotificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *defaultNotificationCenter = NSNotificationCenter.defaultCenter;
         [defaultNotificationCenter addObserver:self
                                       selector:@selector(playbackStateChanged:)
                                           name:VLCPlayerStateChanged
@@ -61,7 +61,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
     _p_libraryInstance = NULL;
 }
 

modules/gui/macosx/library/VLCLibraryModel.m

@@ -192,7 +192,7 @@ static void libraryCallback(void *p_data, const vlc_ml_event_t *p_event)
         _artistCacheModificationQueue = dispatch_queue_create("artistCacheModificationQueue", 0);
         _genreCacheModificationQueue = dispatch_queue_create("genreCacheModificationQueue", 0);
 
-        _defaultNotificationCenter = [NSNotificationCenter defaultCenter];
+        _defaultNotificationCenter = NSNotificationCenter.defaultCenter;
         [_defaultNotificationCenter addObserver:self
                                        selector:@selector(applicationWillTerminate:)
                                            name:NSApplicationWillTerminateNotification

modules/gui/macosx/library/VLCLibraryWindow.m

@@ -97,7 +97,7 @@ static int ShowFullscreenController(vlc_object_t *p_this, const char *psz_variab
 {
     @autoreleasepool {
         dispatch_async(dispatch_get_main_queue(), ^{
-            [[NSNotificationCenter defaultCenter] postNotificationName:VLCVideoWindowShouldShowFullscreenController
+            [NSNotificationCenter.defaultCenter postNotificationName:VLCVideoWindowShouldShowFullscreenController
                                                                 object:nil];
         });
 
@@ -110,7 +110,7 @@ static int ShowController(vlc_object_t *p_this, const char *psz_variable,
 {
     @autoreleasepool {
         dispatch_async(dispatch_get_main_queue(), ^{
-            [[NSNotificationCenter defaultCenter] postNotificationName:VLCWindowShouldShowController
+            [NSNotificationCenter.defaultCenter postNotificationName:VLCWindowShouldShowController
                                                                 object:nil];
         });
 
@@ -167,7 +167,7 @@ static void addShadow(NSImageView *__unsafe_unretained imageView)
     [self.librarySortButton setHidden:NO];
     [self.librarySearchField setEnabled:YES];
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(shouldShowController:)
                                name:VLCWindowShouldShowController
@@ -256,7 +256,7 @@ static void addShadow(NSImageView *__unsafe_unretained imageView)
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
     if (@available(macOS 10.14, *)) {
         [NSApplication.sharedApplication removeObserver:self forKeyPath:@"effectiveAppearance"];
     }
@@ -928,7 +928,7 @@ static void addShadow(NSImageView *__unsafe_unretained imageView)
         NSRect videoViewRect = [videoView convertRect:videoView.frame toView:self.contentView];
 
         if ([self.contentView mouse:mouseLocation inRect:videoViewRect]) {
-            [[NSNotificationCenter defaultCenter] postNotificationName:VLCVideoWindowShouldShowFullscreenController
+            [NSNotificationCenter.defaultCenter postNotificationName:VLCVideoWindowShouldShowFullscreenController
                                                                 object:self];
         }
     }

modules/gui/macosx/library/audio-library/VLCLibraryAlbumTableCellView.m

@@ -173,7 +173,7 @@ const CGFloat VLCLibraryAlbumTableCellViewDefaultHeight = 168.;
     [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:horizontalVisualConstraints options:0 metrics:0 views:dict]];
     [self addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:verticalVisualContraints options:0 metrics:0 views:dict]];
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(handleTableViewSelectionIsChanging:)
                                name:NSTableViewSelectionIsChangingNotification

modules/gui/macosx/library/audio-library/VLCLibraryAudioViewController.m

@@ -84,7 +84,7 @@ NSString *VLCLibraryPlaceholderAudioViewIdentifier = @"VLCLibraryPlaceholderAudi
         [self setupAudioSegmentedControl];
         [self setupAudioLibraryViews];
 
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(libraryModelUpdated:)
                                    name:VLCLibraryModelAudioMediaListReset

modules/gui/macosx/library/audio-library/VLCLibrarySongsTableViewSongPlayingTableCellView.m

@@ -32,7 +32,7 @@
 
 - (void)awakeFromNib
 {
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(playStateOrItemChanged:)
                                name:VLCPlayerCurrentMediaItemChanged
@@ -45,7 +45,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)prepareForReuse

modules/gui/macosx/library/media-source/VLCMediaSource.m

@@ -46,7 +46,7 @@ static void cb_children_reset(vlc_media_tree_t *p_tree,
 {
     dispatch_async(dispatch_get_main_queue(), ^{
         VLCMediaSource *mediaSource = (__bridge VLCMediaSource *)p_data;
-        [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourceChildrenReset
+        [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourceChildrenReset
                                                             object:mediaSource];
     });
 }
@@ -59,7 +59,7 @@ static void cb_children_added(vlc_media_tree_t *p_tree,
 {
     dispatch_async(dispatch_get_main_queue(), ^{
         VLCMediaSource *mediaSource = (__bridge VLCMediaSource *)p_data;
-        [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourceChildrenAdded
+        [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourceChildrenAdded
                                                             object:mediaSource];
     });
 }
@@ -72,7 +72,7 @@ static void cb_children_removed(vlc_media_tree_t *p_tree,
 {
     dispatch_async(dispatch_get_main_queue(), ^{
         VLCMediaSource *mediaSource = (__bridge VLCMediaSource *)p_data;
-        [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourceChildrenRemoved
+        [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourceChildrenRemoved
                                                             object:mediaSource];
     });
 }
@@ -84,7 +84,7 @@ static void cb_preparse_ended(vlc_media_tree_t *p_tree,
 {
     dispatch_async(dispatch_get_main_queue(), ^{
         VLCMediaSource *mediaSource = (__bridge VLCMediaSource *)p_data;
-        [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourcePreparsingEnded
+        [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourcePreparsingEnded
                                                             object:mediaSource];
     });
 }
@@ -275,7 +275,7 @@ static const char *const localDevicesDescription = "My Machine";
         }
         
         dispatch_async(dispatch_get_main_queue(), ^{
-            [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourceChildrenReset object:self];
+            [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourceChildrenReset object:self];
             
             if (!self->_respondsToDiskChanges) {
                 // We register the notifications here, as they are retrieved from the OS.
@@ -399,7 +399,7 @@ static const char *const localDevicesDescription = "My Machine";
         }
         
         dispatch_async(dispatch_get_main_queue(), ^{
-            [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourceChildrenAdded
+            [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourceChildrenAdded
                                                                 object:self];
         });
     });
@@ -442,7 +442,7 @@ static const char *const localDevicesDescription = "My Machine";
         input_item_node_Delete(nodeToRemove);
         
         dispatch_async(dispatch_get_main_queue(), ^{
-            [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaSourceChildrenRemoved
+            [NSNotificationCenter.defaultCenter postNotificationName:VLCMediaSourceChildrenRemoved
                                                                 object:self];
         });
         

modules/gui/macosx/library/media-source/VLCMediaSourceBaseDataSource.m

@@ -85,7 +85,7 @@ NSString *VLCMediaSourceTableViewCellIdentifier = @"VLCMediaSourceTableViewCellI
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 #pragma mark - view and model state management

modules/gui/macosx/library/media-source/VLCMediaSourceCollectionViewItem.m

@@ -52,7 +52,7 @@ NSString *VLCMediaSourceCellIdentifier = @"VLCLibraryCellIdentifier";
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
     if (@available(macOS 10.14, *)) {
         [NSApplication.sharedApplication removeObserver:self forKeyPath:@"effectiveAppearance"];
     }

modules/gui/macosx/library/video-library/VLCLibraryVideoCollectionViewContainerView.m

@@ -143,7 +143,7 @@
 
 - (void)setupCollectionViewSizeChangeListener
 {
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(collectionViewFrameChanged:)
                                name:NSViewFrameDidChangeNotification

modules/gui/macosx/library/video-library/VLCLibraryVideoCollectionViewContainerViewDataSource.m

@@ -50,7 +50,7 @@
 {
     self = [super init];
     if(self) {
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(libraryModelVideoListReset:)
                                    name:VLCLibraryModelVideoMediaListReset

modules/gui/macosx/library/video-library/VLCLibraryVideoTableViewDataSource.m

@@ -52,7 +52,7 @@
 {
     self = [super init];
     if(self) {
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(libraryModelVideoListReset:)
                                    name:VLCLibraryModelVideoMediaListReset

modules/gui/macosx/library/video-library/VLCLibraryVideoViewController.m

@@ -66,7 +66,7 @@
         [self setupVideoPlaceholderView];
         [self setupVideoLibraryViews];
 
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(libraryModelUpdated:)
                                    name:VLCLibraryModelVideoMediaListReset

modules/gui/macosx/main/VLCApplication.m

@@ -50,7 +50,7 @@
 {
     self = [super init];
     if (self) {
-        [[NSNotificationCenter defaultCenter] addObserver:self
+        [NSNotificationCenter.defaultCenter addObserver:self
                                                  selector:@selector(appBecameActive:)
                                                      name:NSApplicationDidBecomeActiveNotification
                                                    object:nil];
@@ -64,7 +64,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (NSImage *)vlcAppIconImage

modules/gui/macosx/main/VLCMain.m

@@ -302,7 +302,7 @@ static VLCMain *sharedInstance = nil;
         return;
     _interfaceIsTerminating = true;
 
-    NSNotificationCenter *notiticationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notiticationCenter = NSNotificationCenter.defaultCenter;
     if (notification == nil) {
         [notiticationCenter postNotificationName: NSApplicationWillTerminateNotification object: nil];
     }

modules/gui/macosx/menus/VLCMainMenu.m

@@ -120,7 +120,7 @@ typedef NS_ENUM(NSInteger, VLCObjectType) {
 - (void)dealloc
 {
     msg_Dbg(getIntf(), "Deinitializing main menu");
-    [[NSNotificationCenter defaultCenter] removeObserver: self];
+    [NSNotificationCenter.defaultCenter removeObserver: self];
 
     [self releaseRepresentedObjects:[NSApp mainMenu]];
 }
@@ -166,7 +166,7 @@ typedef NS_ENUM(NSInteger, VLCObjectType) {
     [self updateTitleAndChapterMenus:nil];
     [self updateProgramMenu:nil];
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(refreshVoutDeviceMenu:)
                                name:NSApplicationDidChangeScreenParametersNotification

modules/gui/macosx/menus/VLCStatusBarIcon.m

@@ -107,7 +107,7 @@
     [_vlcStatusBarIconMenu setDelegate:self];
 
     // Register notifications
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(updateTimeAndPosition:)
                                name:VLCPlayerTimeAndPositionChanged
@@ -213,7 +213,7 @@
     }
 
     // Cleanup
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 #pragma mark -

modules/gui/macosx/os-integration/VLCClickerManager.m

@@ -56,7 +56,7 @@
     if (self) {
         _playlistController = VLCMain.sharedInstance.playlistController;
         _playerController = [_playlistController playerController];
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
 
         /* init media key support */
         b_mediaKeySupport = var_InheritBool(getIntf(), "macosx-mediakeys");
@@ -96,7 +96,7 @@
 {
     _mediaKeyController = nil;
     _remote = nil;
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 #pragma mark -

modules/gui/macosx/os-integration/VLCRemoteControlService.m

@@ -70,7 +70,7 @@ static inline NSArray * RemoteCommandCenterCommandsToHandle()
         _playlistController = VLCMain.sharedInstance.playlistController;
         _playerController = [_playlistController playerController];
 
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(playbackPositionUpdated:)
                                    name:VLCPlayerTimeAndPositionChanged
@@ -97,7 +97,7 @@ static inline NSArray * RemoteCommandCenterCommandsToHandle()
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)playbackStateChanged:(NSNotification *)aNotification

modules/gui/macosx/panels/VLCAudioEffectsWindowController.m

@@ -221,7 +221,7 @@ static inline void enableTextField(NSTextField *const __unsafe_unretained textFi
 
 - (void)windowDidLoad
 {
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(updateCocoaWindowLevel:)
                                name:VLCWindowShouldUpdateLevel
@@ -319,7 +319,7 @@ static inline void enableTextField(NSTextField *const __unsafe_unretained textFi
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 #pragma mark -

modules/gui/macosx/panels/VLCBookmarksWindowController.m

@@ -55,7 +55,7 @@
 {
     self = [super initWithWindowNibName:@"Bookmarks"];
     if (self) {
-        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateCocoaWindowLevel:) name:VLCWindowShouldUpdateLevel object:nil];
+        [NSNotificationCenter.defaultCenter addObserver:self selector:@selector(updateCocoaWindowLevel:) name:VLCWindowShouldUpdateLevel object:nil];
     }
     return self;
 }
@@ -65,7 +65,7 @@
     //if (p_old_input)
     //    input_Release(p_old_input);
 
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)windowDidLoad

modules/gui/macosx/panels/VLCInformationWindowController.m

@@ -71,7 +71,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)awakeFromNib
@@ -82,7 +82,7 @@
 
     _outlineView.dataSource = self;
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     if (_mainMenuInstance) {
         [notificationCenter addObserver:self
                                selector:@selector(currentPlayingItemChanged:)

modules/gui/macosx/panels/VLCTrackSynchronizationWindowController.m

@@ -52,13 +52,13 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)windowDidLoad
 {
     _playerController = VLCMain.sharedInstance.playlistController.playerController;
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(updateValues:)
                                name:VLCPlayerCurrentMediaItemChanged

modules/gui/macosx/panels/VLCVideoEffectsWindowController.m

@@ -82,7 +82,7 @@ NSString *VLCVideoEffectsProfileNamesKey = @"VideoEffectProfileNames";
     self = [super initWithWindowNibName:@"VideoEffects"];
     if (self) {
         dispatch_async(dispatch_get_main_queue(), ^{
-            NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+            NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
             [notificationCenter addObserver:self
                                    selector:@selector(updateCocoaWindowLevel:)
                                        name:VLCWindowShouldUpdateLevel
@@ -348,7 +348,7 @@ NSString *VLCVideoEffectsProfileNamesKey = @"VideoEffectProfileNames";
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)updateCocoaWindowLevel:(NSNotification *)aNotification

modules/gui/macosx/panels/dialogs/VLCResumeDialogController.m

@@ -48,7 +48,7 @@
 {
     self = [super initWithWindowNibName:@"ResumeDialog"];
     if (self) {
-        [[NSNotificationCenter defaultCenter] addObserver:self
+        [NSNotificationCenter.defaultCenter addObserver:self
                                                  selector:@selector(updateCocoaWindowLevel:)
                                                      name:VLCWindowShouldUpdateLevel
                                                    object:nil];
@@ -58,7 +58,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)windowDidLoad

modules/gui/macosx/playlist/VLCPlaybackContinuityController.m

@@ -66,7 +66,7 @@ static NSString *VLCRecentlyPlayedMediaListKey = @"recentlyPlayedMediaList";
 {
     self = [super init];
     if (self) {
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(inputItemChanged:)
                                    name:VLCPlayerCurrentMediaItemChanged
@@ -83,7 +83,7 @@ static NSString *VLCRecentlyPlayedMediaListKey = @"recentlyPlayedMediaList";
 {
     msg_Dbg(getIntf(), "Deinitializing input manager");
 
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 
     if (_currentInput) {
         /* continue playback where you left off */

modules/gui/macosx/playlist/VLCPlayerController.m

@@ -585,7 +585,7 @@ static int BossCallback(vlc_object_t *p_this,
 {
     self = [super init];
     if (self) {
-        _defaultNotificationCenter = [NSNotificationCenter defaultCenter];
+        _defaultNotificationCenter = NSNotificationCenter.defaultCenter;
         [_defaultNotificationCenter addObserver:self
                                        selector:@selector(applicationWillTerminate:)
                                            name:NSApplicationWillTerminateNotification

modules/gui/macosx/playlist/VLCPlaylistController.m

@@ -216,7 +216,7 @@ static const struct vlc_playlist_callbacks playlist_callbacks = {
 {
     self = [super init];
     if (self) {
-        _defaultNotificationCenter = [NSNotificationCenter defaultCenter];
+        _defaultNotificationCenter = NSNotificationCenter.defaultCenter;
         [_defaultNotificationCenter addObserver:self
                                        selector:@selector(applicationWillTerminate:)
                                            name:NSApplicationWillTerminateNotification

modules/gui/macosx/playlist/VLCPlaylistTableCellView.m

@@ -41,7 +41,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)setRepresentsCurrentPlaylistItem:(BOOL)representsCurrentPlaylistItem

modules/gui/macosx/preferences/VLCSimplePrefsController.m

@@ -1106,7 +1106,7 @@ static inline void save_string_list(intf_thread_t * p_intf, id object, const cha
 
     /* okay, let's save our changes to vlcrc */
     config_SaveConfigFile(p_intf);
-    [[NSNotificationCenter defaultCenter] postNotificationName:VLCConfigurationChangedNotification object:nil];
+    [NSNotificationCenter.defaultCenter postNotificationName:VLCConfigurationChangedNotification object:nil];
 }
 
 - (void)showSettingsForCategory:(NSView *)categoryView
@@ -1539,7 +1539,7 @@ static inline void save_string_list(intf_thread_t * p_intf, id object, const cha
         _libraryController = VLCMain.sharedInstance.libraryController;
         _libraryModel = _libraryController.libraryModel;
 
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         [notificationCenter addObserver:self
                                selector:@selector(listOfMonitoredFoldersUpdated:)
                                    name:VLCLibraryModelListOfMonitoredFoldersUpdated
@@ -1550,7 +1550,7 @@ static inline void save_string_list(intf_thread_t * p_intf, id object, const cha
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)listOfMonitoredFoldersUpdated:(NSNotification *)aNotification

modules/gui/macosx/preferences/prefs.m

@@ -218,7 +218,7 @@ enum VLCTreeBranchType {
     [_rootTreeItem applyChanges];
     fixIntfSettings();
     config_SaveConfigFile(getIntf());
-    [[NSNotificationCenter defaultCenter] postNotificationName:VLCConfigurationChangedNotification object:nil];
+    [NSNotificationCenter.defaultCenter postNotificationName:VLCConfigurationChangedNotification object:nil];
     [self.window orderOut:self];
 }
 

modules/gui/macosx/preferences/prefs_widgets.m

@@ -1359,7 +1359,7 @@ my_width, tooltip, init_value)                                              \
                       1, 49, toolTip, @"")
         [o_textfield setIntegerValue: p_item->value.i];
         [o_textfield setDelegate: self];
-        [[NSNotificationCenter defaultCenter] addObserver: self
+        [NSNotificationCenter.defaultCenter addObserver: self
                                                  selector: @selector(textfieldChanged:)
                                                      name: NSControlTextDidChangeNotification
                                                    object: o_textfield];
@@ -1539,7 +1539,7 @@ my_width, tooltip, init_value)                                              \
         [o_textfield setIntegerValue: p_item->value.i];
         [o_textfield setAutoresizingMask:NSViewMaxXMargin ];
         [o_textfield setDelegate: self];
-        [[NSNotificationCenter defaultCenter] addObserver: self
+        [NSNotificationCenter.defaultCenter addObserver: self
                                                  selector: @selector(textfieldChanged:)
                                                      name: NSControlTextDidChangeNotification
                                                    object: o_textfield];
@@ -1660,7 +1660,7 @@ my_width, tooltip, init_value)                                              \
                       1, 49, toolTip, @"")
         [o_textfield setFloatValue: p_item->value.f];
         [o_textfield setDelegate: self];
-        [[NSNotificationCenter defaultCenter] addObserver: self
+        [NSNotificationCenter.defaultCenter addObserver: self
                                                  selector: @selector(textfieldChanged:)
                                                      name: NSControlTextDidChangeNotification
                                                    object: o_textfield];
@@ -1748,7 +1748,7 @@ my_width, tooltip, init_value)                                              \
         [o_textfield setFloatValue: p_item->value.f];
         [o_textfield setAutoresizingMask:NSViewMaxXMargin ];
         [o_textfield setDelegate: self];
-        [[NSNotificationCenter defaultCenter] addObserver: self
+        [NSNotificationCenter.defaultCenter addObserver: self
                                                  selector: @selector(textfieldChanged:)
                                                      name: NSControlTextDidChangeNotification
                                                    object: o_textfield];

modules/gui/macosx/views/VLCCustomWindowButton.m

@@ -99,7 +99,7 @@
 
 - (void)commonInitializer
 {
-    [[NSNotificationCenter defaultCenter] addObserver:self
+    [NSNotificationCenter.defaultCenter addObserver:self
                                              selector:@selector(controlTintChanged:)
                                                  name:NSControlTintDidChangeNotification
                                                object:nil];

modules/gui/macosx/windows/VLCAboutWindowController.m

@@ -62,7 +62,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver: self];
+    [NSNotificationCenter.defaultCenter removeObserver: self];
 }
 
 /*****************************************************************************

modules/gui/macosx/windows/VLCDetachedAudioWindow.m

@@ -50,7 +50,7 @@
     trackingView.viewToHide = self.wrapperView;
     trackingView.animatesTransition = YES;
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self selector:@selector(inputItemChanged:) name:VLCPlayerCurrentMediaItemChanged object:nil];
 
     [self inputItemChanged:nil];
@@ -58,7 +58,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)inputItemChanged:(NSNotification *)aNotification

modules/gui/macosx/windows/VLCOpenWindowController.m

@@ -76,7 +76,7 @@ NSString *const VLCOpenTextFieldWasClicked = @"VLCOpenTextFieldWasClicked";
 
 - (void)mouseDown:(NSEvent *)theEvent
 {
-    [[NSNotificationCenter defaultCenter] postNotificationName: VLCOpenTextFieldWasClicked
+    [NSNotificationCenter.defaultCenter postNotificationName: VLCOpenTextFieldWasClicked
                                                         object: self];
     [super mouseDown: theEvent];
 }
@@ -142,7 +142,7 @@ NSString *const VLCOpenTextFieldWasClicked = @"VLCOpenTextFieldWasClicked";
 
     [self setupSubtitlesPanel];
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver: self
                            selector: @selector(openNetInfoChanged:)
                                name: NSControlTextDidChangeNotification
@@ -963,13 +963,13 @@ NSString *const VLCOpenTextFieldWasClicked = @"VLCOpenTextFieldWasClicked";
 
     if (i_tag == 0) {
         [_netUDPPortTextField setIntValue: [_netUDPPortStepper intValue]];
-        [[NSNotificationCenter defaultCenter] postNotificationName: VLCOpenTextFieldWasClicked
+        [NSNotificationCenter.defaultCenter postNotificationName: VLCOpenTextFieldWasClicked
                                                             object: _netUDPPortTextField];
         [self.window makeFirstResponder: _netUDPPortTextField];
     }
     else if (i_tag == 1) {
         [_netUDPMPortTextField setIntValue: [_netUDPMPortStepper intValue]];
-        [[NSNotificationCenter defaultCenter] postNotificationName: VLCOpenTextFieldWasClicked
+        [NSNotificationCenter.defaultCenter postNotificationName: VLCOpenTextFieldWasClicked
                                                             object: _netUDPMPortTextField];
         [self.window makeFirstResponder: _netUDPMPortTextField];
     }

modules/gui/macosx/windows/addons/VLCAddonsWindowController.m

@@ -296,7 +296,7 @@ static void addonChangedCallback( addons_manager_t *manager,
 
     // update ui
     [_addonsTable reloadData];
-    [[NSNotificationCenter defaultCenter] postNotificationName:NSTableViewSelectionDidChangeNotification object:_addonsTable];
+    [NSNotificationCenter.defaultCenter postNotificationName:NSTableViewSelectionDidChangeNotification object:_addonsTable];
 }
 
 - (void)_findNewAddons

modules/gui/macosx/windows/convertandsave/VLCOutput.m

@@ -110,43 +110,43 @@
     [_channelNameLabel setStringValue: _NS("Channel Name")];
     [_sdpURLLabel setStringValue: _NS("SDP URL")];
 
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(outputInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _fileTextField];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(outputInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _streamAddressTextField];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(outputInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _streamPortTextField];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(TTLChanged:)
         name: NSControlTextDidChangeNotification
         object: _streamTTLTextField];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(transcodeInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _transcodeVideoBitrateComboBox];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(transcodeInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _transcodeVideoScaleComboBox];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(transcodeInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _transcodeAudioBitrateComboBox];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(transcodeInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _transcodeAudioChannelsComboBox];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(transcodeInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _channelNameTextField];
-    [[NSNotificationCenter defaultCenter] addObserver: self
+    [NSNotificationCenter.defaultCenter addObserver: self
         selector: @selector(transcodeInfoChanged:)
         name: NSControlTextDidChangeNotification
         object: _sdpURLTextField];

modules/gui/macosx/windows/extensions/VLCExtensionsDialogProvider.m

@@ -71,7 +71,7 @@ static NSView *createControlFromWidget(extension_widget_t *widget, id self)
                 [field setAutoresizingMask:NSViewWidthSizable];
                 [field setFont:[NSFont systemFontOfSize:0]];
                 [[field cell] setControlSize:NSRegularControlSize];
-                [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(syncTextField:)  name:NSControlTextDidChangeNotification object:field];
+                [NSNotificationCenter.defaultCenter addObserver:self selector:@selector(syncTextField:)  name:NSControlTextDidChangeNotification object:field];
                 return field;
             }
             case EXTENSION_WIDGET_PASSWORD:
@@ -81,7 +81,7 @@ static NSView *createControlFromWidget(extension_widget_t *widget, id self)
                 [field setAutoresizingMask:NSViewWidthSizable];
                 [field setFont:[NSFont systemFontOfSize:0]];
                 [[field cell] setControlSize:NSRegularControlSize];
-                [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(syncTextField:)  name:NSControlTextDidChangeNotification object:field];
+                [NSNotificationCenter.defaultCenter addObserver:self selector:@selector(syncTextField:)  name:NSControlTextDidChangeNotification object:field];
                 return field;
             }
 

modules/gui/macosx/windows/mainwindow/VLCControlsBarCommon.m

@@ -72,7 +72,7 @@
     _playlistController = VLCMain.sharedInstance.playlistController;
     _playerController = _playlistController.playerController;
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(updateTimeSlider:)
                                name:VLCPlayerTimeAndPositionChanged
@@ -188,7 +188,7 @@
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (CGFloat)height

modules/gui/macosx/windows/mainwindow/VLCMainVideoViewControlsBar.m

@@ -62,7 +62,7 @@
     _playlistController = VLCMain.sharedInstance.playlistController;
     _playerController = _playlistController.playerController;
 
-    NSNotificationCenter * const notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter * const notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(updateDetailLabel:)
                                name:VLCPlayerCurrentMediaItemChanged

modules/gui/macosx/windows/mainwindow/VLCMainWindowControlsBar.m

@@ -64,7 +64,7 @@
     _playlistController = VLCMain.sharedInstance.playlistController;
     _playerController = _playlistController.playerController;
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(updatePlaybackControls:)
                                name:VLCPlayerCurrentMediaItemChanged

modules/gui/macosx/windows/video/VLCFullVideoViewWindow.m

@@ -46,7 +46,7 @@
     [super setup];
     _autohideTitlebar = NO;
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(shouldShowFullscreenController:)
                                name:VLCVideoWindowShouldShowFullscreenController

modules/gui/macosx/windows/video/VLCMainVideoViewController.m

@@ -120,7 +120,7 @@
     [self updatePlaylistToggleState];
     [self updateLibraryControls];
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(shouldShowControls:)
                                name:VLCVideoWindowShouldShowFullscreenController

modules/gui/macosx/windows/video/VLCVideoOutputProvider.m

@@ -604,7 +604,7 @@ int WindowOpen(vlc_window_t *p_wnd)
     VLCMain *main = VLCMain.sharedInstance;
     [[main libraryWindow] setWindowLevel:i_level];
 
-    [[NSNotificationCenter defaultCenter] postNotificationName:VLCWindowShouldUpdateLevel object:self userInfo:@{VLCWindowLevelKey : @(_currentWindowLevel)}];
+    [NSNotificationCenter.defaultCenter postNotificationName:VLCWindowShouldUpdateLevel object:self userInfo:@{VLCWindowLevelKey : @(_currentWindowLevel)}];
 }
 
 @end

modules/gui/macosx/windows/video/VLCVideoWindowCommon.m

@@ -95,7 +95,7 @@ NSString *VLCWindowShouldShowController = @"VLCWindowShouldShowController";
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 - (void)awakeFromNib
@@ -110,7 +110,7 @@ NSString *VLCWindowShouldShowController = @"VLCWindowShouldShowController";
         _videoViewController = [[VLCMainVideoViewController alloc] init];
     }
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter addObserver:self
                            selector:@selector(mediaMetadataChanged:)
                                name:VLCPlayerMetadataChangedForCurrentMedia
@@ -281,7 +281,7 @@ NSString *VLCWindowShouldShowController = @"VLCWindowShouldShowController";
     _inFullscreenTransition = NO;
 
     if ([self hasActiveVideo]) {
-        NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+        NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
         if (![_videoViewController.view isHidden]) {
             [notificationCenter postNotificationName:VLCVideoWindowShouldShowFullscreenController object:self];
         }
@@ -484,7 +484,7 @@ NSString *VLCWindowShouldShowController = @"VLCWindowShouldShowController";
     [o_fullscreen_window makeKeyWindow];
     [o_fullscreen_window setAcceptsMouseMovedEvents: YES];
 
-    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+    NSNotificationCenter *notificationCenter = NSNotificationCenter.defaultCenter;
     [notificationCenter postNotificationName:VLCVideoWindowDidEnterFullscreen object:self];
     [notificationCenter postNotificationName:VLCVideoWindowShouldShowFullscreenController object:self];
 

modules/gui/macosx/windows/video/VLCVoutView.m

@@ -180,7 +180,7 @@
 {
     NSPoint ml = [self convertPoint: [o_event locationInWindow] fromView: nil];
     if ([self mouse: ml inRect: [self bounds]]) {
-        [[NSNotificationCenter defaultCenter] postNotificationName:VLCVideoWindowShouldShowFullscreenController
+        [NSNotificationCenter.defaultCenter postNotificationName:VLCVideoWindowShouldShowFullscreenController
                                                             object:self];
     }
 

modules/notify/osx_notifications.m

@@ -189,7 +189,7 @@ static inline NSString* CharsToNSString(char * _Nullable cStr)
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 
     // Clear a remaining lastNotification in Notification Center, if any
     if (_lastNotification) {

modules/video_output/macosx.m

@@ -476,7 +476,7 @@ static void OpenglSwap (vlc_gl_t *gl)
     GLint params[] = { 1 };
     CGLSetParameter ([[self openGLContext] CGLContextObj], kCGLCPSwapInterval, params);
 
-    [[NSNotificationCenter defaultCenter] addObserverForName:NSApplicationDidChangeScreenParametersNotification
+    [NSNotificationCenter.defaultCenter addObserverForName:NSApplicationDidChangeScreenParametersNotification
                                                       object:NSApplication.sharedApplication
                                                        queue:nil
                                                   usingBlock:^(NSNotification *notification) {
@@ -491,7 +491,7 @@ static void OpenglSwap (vlc_gl_t *gl)
 
 - (void)dealloc
 {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
     [super dealloc];
 }