25 files changed, 134 insertions, 240 deletions
diff --git a/Source/MGTemplateEngine.m b/Source/MGTemplateEngine.m
index 4fe7620b..c10773bf 100644
--- a/Source/MGTemplateEngine.m
+++ b/Source/MGTemplateEngine.m
@@ -28,7 +28,7 @@
 #define GLOBAL_DELIM_EXPR_END		@"expressionEnd"
 #define GLOBAL_DELIM_FILTER			@"filter"
 
-@interface MGTemplateEngine (PrivateMethods)
+@interface MGTemplateEngine ()
 
 - (NSObject *)valueForVariable:(NSString *)var parent:(NSObject **)parent parentKey:(NSString **)parentKey;
 - (void)setValue:(NSObject *)newValue forVariable:(NSString *)var forceCurrentStackFrame:(BOOL)inStackFrame;
diff --git a/Source/NoodleLineNumberView.m b/Source/NoodleLineNumberView.m
index 8b678434..3894ac8f 100644
--- a/Source/NoodleLineNumberView.m
+++ b/Source/NoodleLineNumberView.m
@@ -53,7 +53,7 @@ typedef NSRange (*RangeOfLineIMP)(id object, SEL selector, NSRange range);
 
 #pragma mark -
 
-@interface NoodleLineNumberView (Private)
+@interface NoodleLineNumberView ()
 
 - (NSArray *)lineIndices;
 - (void)invalidateLineIndices;
diff --git a/Source/SPActivityTextFieldCell.m b/Source/SPActivityTextFieldCell.m
index b09454bb..84bf37e9 100644
--- a/Source/SPActivityTextFieldCell.m
+++ b/Source/SPActivityTextFieldCell.m
@@ -33,7 +33,7 @@
 
 #define FAVORITE_NAME_FONT_SIZE 12.0f
 
-@interface SPActivityTextFieldCell (PrivateAPI)
+@interface SPActivityTextFieldCell ()
 
 - (NSAttributedString *)constructSubStringAttributedString;
 - (NSAttributedString *)attributedStringForFavoriteName;
@@ -332,9 +332,7 @@ static inline NSRect SPTextLinkRectFromCellRect(NSRect inRect)
 	[super dealloc];
 }
 
-@end
-
-@implementation SPActivityTextFieldCell (PrivateAPI)
+#pragma mark - Private API
 
 /**
  * Constructs the attributed string to be used as the cell's substring.
diff --git a/Source/SPCSVParser.m b/Source/SPCSVParser.m
index 819c34b7..0dee279d 100644
--- a/Source/SPCSVParser.m
+++ b/Source/SPCSVParser.m
@@ -34,7 +34,7 @@
  * Please see the header files for a general description of the purpose of this class.
  */
 
-@implementation SPCSVParser : NSObject
+@implementation SPCSVParser
 
 #pragma mark -
 #pragma mark Retrieving data from the CSV string
diff --git a/Source/SPColorSelectorView.h b/Source/SPColorSelectorView.h
index 925034a3..5211bb86 100644
--- a/Source/SPColorSelectorView.h
+++ b/Source/SPColorSelectorView.h
@@ -70,8 +70,8 @@
 
 @end
 
-@interface NSObject (SPColorSelectorViewDelegate)
-
+@protocol SPColorSelectorViewDelegate <NSObject>
+@optional
 /**
  * Called on a delegate when the selection did (really) change
  * @param aView The changed view
diff --git a/Source/SPColorSelectorView.m b/Source/SPColorSelectorView.m
index ba577170..15c55f57 100644
--- a/Source/SPColorSelectorView.m
+++ b/Source/SPColorSelectorView.m
@@ -43,7 +43,7 @@
 #import "SPColorSelectorView.h"
 #import "SPOSInfo.h"
 
-@interface SPColorSelectorView (Private)
+@interface SPColorSelectorView ()
 
 - (void)setupTrackingAreas;
 - (void)_drawDotBevelStyleWithGradient:(NSGradient *)gradient insideRect:(NSRect)colorSquareRect;
@@ -414,7 +414,7 @@ enum trackingAreaIDs
 			}
 			
 			if (delegate != nil && [delegate respondsToSelector:@selector(colorSelectorDidChange:)]) {
-				[delegate colorSelectorDidChange:self];
+				[(id<SPColorSelectorViewDelegate>)delegate colorSelectorDidChange:self];
 			}
 			
 			[self setNeedsDisplay:YES];
diff --git a/Source/SPComboPopupButton.h b/Source/SPComboPopupButton.h
index a3b34b10..035ab8d7 100644
--- a/Source/SPComboPopupButton.h
+++ b/Source/SPComboPopupButton.h
@@ -44,7 +44,3 @@
 @property(readonly, assign) NSUInteger lineOffset;
 
 @end
-
-@interface SPComboPopupButtonCell : NSPopUpButtonCell
-
-@end
diff --git a/Source/SPComboPopupButton.m b/Source/SPComboPopupButton.m
index 3df3d6ec..e1506322 100644
--- a/Source/SPComboPopupButton.m
+++ b/Source/SPComboPopupButton.m
@@ -34,12 +34,16 @@
 #define kSPComboPopupButtonLineOffsetSmall 15;
 #define kSPComboPopupButtonLineOffsetRegular 17;
 
-@interface SPComboPopupButton (PrivateAPI)
+@interface SPComboPopupButton ()
 
 - (void)_initCustomData;
 
 @end
 
+@interface SPComboPopupButtonCell : NSPopUpButtonCell
+
+@end
+
 @implementation SPComboPopupButton
 
 @synthesize shouldDrawNonHighlightState;
@@ -184,12 +188,8 @@
 	menuIsOpen = NO;
 }
 
-@end
-
 #pragma mark -
 
-@implementation SPComboPopupButton (PrivateAPI)
-
 - (void)_initCustomData
 {
 
@@ -221,12 +221,6 @@
 
 #pragma mark -
 
-@interface SPComboPopupButtonCell (PrivateAPI)
-
-- (void)_initCustomData;
-
-@end
-
 @implementation SPComboPopupButtonCell
 
 /**
diff --git a/Source/SPDataStorage.m b/Source/SPDataStorage.m
index 5db56b1e..3072ed33 100644
--- a/Source/SPDataStorage.m
+++ b/Source/SPDataStorage.m
@@ -34,7 +34,7 @@
 #include <stdlib.h>
 #include <mach/mach_time.h>
 
-@interface SPDataStorage (Private_API)
+@interface SPDataStorage ()
 
 - (void) _checkNewRow:(NSMutableArray *)aRow;
 - (void) _addRowUnsafeUnchecked:(NSMutableArray *)aRow;
@@ -559,9 +559,7 @@ static inline NSMutableArray* SPDataStorageGetEditedRow(NSPointerArray* rowStore
 	[super dealloc];
 }
 
-@end
-
-@implementation SPDataStorage (PrivateAPI)
+#pragma mark - Private API
 
 // DO NOT CALL THIS METHOD UNLESS YOU CURRENTLY HAVE A LOCK ON SELF!!!
 - (void) _checkNewRow:(NSMutableArray *)aRow
diff --git a/Source/SPEditorPreferencePane.m b/Source/SPEditorPreferencePane.m
index 7fc810ea..fba5ff92 100644
--- a/Source/SPEditorPreferencePane.m
+++ b/Source/SPEditorPreferencePane.m
@@ -43,7 +43,7 @@ static NSString *SPCustomColorSchemeNameLC  = @"user-defined";
 
 #define SP_EXPORT_COLOR_SCHEME_NAME_STRING NSLocalizedString(@"MyTheme", @"Preferences : Themes : Initial filename for 'Export'")
 
-@interface SPEditorPreferencePane (PrivateAPI)
+@interface SPEditorPreferencePane ()
 
 - (BOOL)_checkForUnsavedTheme;
 - (NSArray *)_getAvailableThemes;
diff --git a/Source/SPGeometryDataView.m b/Source/SPGeometryDataView.m
index 996c1cf8..a94b0f43 100644
--- a/Source/SPGeometryDataView.m
+++ b/Source/SPGeometryDataView.m
@@ -30,7 +30,7 @@
 
 #import "SPGeometryDataView.h"
 
-@interface SPGeometryDataView (PrivateAPI)
+@interface SPGeometryDataView ()
 
 - (NSPoint)_normalizePoint:(NSPoint)aPoint;
 - (void)_drawPoint:(NSPoint)aPoint;
@@ -282,12 +282,8 @@
 	[super dealloc];
 }
 
-@end
-
 #pragma mark -
-#pragma mark PrivateAPI
-
-@implementation  SPGeometryDataView (PrivateAPI)
+#pragma mark Private API
 
 /**
  * Converts original NSPoint to target coordinates
diff --git a/Source/SPImageView.h b/Source/SPImageView.h
index 873f4075..3db5dee0 100644
--- a/Source/SPImageView.h
+++ b/Source/SPImageView.h
@@ -29,8 +29,8 @@
 //
 //  More info at <https://github.com/sequelpro/sequelpro>
 
-@interface NSObject (SPImageViewDelegate)
-
+@protocol SPImageViewDelegate <NSObject>
+@optional
 - (void)processUpdatedImageData:(NSData *)data;
 - (void)processPasteImageData;
 
diff --git a/Source/SPImageView.m b/Source/SPImageView.m
index d56b7fa5..76a9b1ff 100644
--- a/Source/SPImageView.m
+++ b/Source/SPImageView.m
@@ -39,7 +39,7 @@
  */
 - (BOOL)performDragOperation:(id <NSDraggingInfo>)sender
 {
-	id delegateForUse = nil;
+	id<SPImageViewDelegate> delegateForUse = nil;
 
 	// If the delegate or the delegate's content instance doesn't implement processUpdatedImageData:,
 	// return the super's implementation
@@ -113,7 +113,7 @@
 - (void)paste:(id)sender
 {
 	// [super paste:sender];
-	id delegateForUse = nil;
+	id<SPImageViewDelegate> delegateForUse = nil;
 
 	// If the delegate or the delegate's content instance doesn't implement processUpdatedImageData:,
 	// return the super's implementation
diff --git a/Source/SPNarrowDownCompletion.m b/Source/SPNarrowDownCompletion.m
index ad355c26..fd6fd38c 100644
--- a/Source/SPNarrowDownCompletion.m
+++ b/Source/SPNarrowDownCompletion.m
@@ -52,7 +52,7 @@
 
 @end
 
-@interface SPNarrowDownCompletion (Private)
+@interface SPNarrowDownCompletion ()
 
 - (NSRect)rectOfMainScreen;
 - (NSString*)filterString;
diff --git a/Source/SPNetworkPreferencePane.m b/Source/SPNetworkPreferencePane.m
index c734f07b..95387871 100644
--- a/Source/SPNetworkPreferencePane.m
+++ b/Source/SPNetworkPreferencePane.m
@@ -33,7 +33,7 @@
 static NSString *SPSSLCipherListMarkerItem = @"--";
 static NSString *SPSSLCipherPboardTypeName = @"SSLCipherPboardType";
 
-@interface SPNetworkPreferencePane (Private)
+@interface SPNetworkPreferencePane ()
 - (void)updateHiddenFiles;
 - (void)loadSSLCiphers;
 - (void)storeSSLCiphers;
diff --git a/Source/SPPreferenceController.m b/Source/SPPreferenceController.m
index fad1d95b..c782c591 100644
--- a/Source/SPPreferenceController.m
+++ b/Source/SPPreferenceController.m
@@ -33,7 +33,7 @@
 #import "SPEditorPreferencePane.h"
 #import "SPGeneralPreferencePane.h"
 
-@interface SPPreferenceController (PrivateAPI)
+@interface SPPreferenceController () <NSWindowDelegate>
 
 - (void)_setupToolbar;
 - (void)_resizeWindowForContentView:(NSView *)view;
@@ -226,6 +226,103 @@
 	[view setFrameOrigin:NSMakePoint(0, 0)];
 }
 
+#pragma mark - SPPreferenceControllerDelegate
+
+#pragma mark Window delegate methods
+
+/**
+ * Trap window close notifications and use them to ensure changes are saved.
+ */
+- (void)windowWillClose:(NSNotification *)notification
+{
+	[[NSColorPanel sharedColorPanel] close];
+
+	// Mark the currently selected field in the window as having finished editing, to trigger saves.
+	if ([[self window] firstResponder]) {
+		[[self window] endEditingFor:[[self window] firstResponder]];
+	}
+}
+
+/**
+ * Trap window resize notifications and use them to disable resizing on most tabs
+ * - except for the favourites tab.
+ */
+- (NSSize)windowWillResize:(NSWindow *)sender toSize:(NSSize)frameSize
+{
+	[[NSColorPanel sharedColorPanel] close];
+
+	return [sender showsResizeIndicator] ? frameSize : [sender frame].size;
+}
+
+#pragma mark -
+#pragma mark Toolbar delegate methods
+
+- (NSToolbarItem *)toolbar:(NSToolbar *)aToolbar itemForItemIdentifier:(NSString *)itemIdentifier willBeInsertedIntoToolbar:(BOOL)flag
+{
+	if ([itemIdentifier isEqualToString:SPPreferenceToolbarGeneral]) {
+		return generalItem;
+	}
+	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarTables]) {
+		return tablesItem;
+	}
+	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarNotifications]) {
+		return notificationsItem;
+	}
+	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarAutoUpdate]) {
+		return autoUpdateItem;
+	}
+	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarNetwork]) {
+		return networkItem;
+	}
+	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarEditor]) {
+		return editorItem;
+	}
+	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarShortcuts]) {
+		return shortcutItem;
+	}
+
+	return [[[NSToolbarItem alloc] initWithItemIdentifier:itemIdentifier] autorelease];
+}
+
+- (NSArray *)toolbarAllowedItemIdentifiers:(NSToolbar *)aToolbar
+{
+	return @[
+			 SPPreferenceToolbarGeneral,
+			 SPPreferenceToolbarTables,
+			 SPPreferenceToolbarNotifications,
+			 SPPreferenceToolbarEditor,
+			 SPPreferenceToolbarShortcuts,
+			 SPPreferenceToolbarAutoUpdate,
+			 SPPreferenceToolbarNetwork
+			 ];
+}
+
+- (NSArray *)toolbarDefaultItemIdentifiers:(NSToolbar *)aToolbar
+{
+	return @[
+			 SPPreferenceToolbarGeneral,
+			 SPPreferenceToolbarTables,
+			 SPPreferenceToolbarNotifications,
+			 SPPreferenceToolbarEditor,
+			 SPPreferenceToolbarShortcuts,
+			 SPPreferenceToolbarAutoUpdate,
+			 SPPreferenceToolbarNetwork
+			 ];
+}
+
+- (NSArray *)toolbarSelectableItemIdentifiers:(NSToolbar *)aToolbar
+{
+	return @[
+			 SPPreferenceToolbarGeneral,
+			 SPPreferenceToolbarTables,
+			 SPPreferenceToolbarNotifications,
+			 SPPreferenceToolbarEditor,
+			 SPPreferenceToolbarShortcuts,
+			 SPPreferenceToolbarAutoUpdate,
+			 SPPreferenceToolbarNetwork
+			 ];
+}
+
 #pragma mark -
 
 - (void)dealloc
diff --git a/Source/SPPreferenceControllerDelegate.h b/Source/SPPreferenceControllerDelegate.h
deleted file mode 100644
index bcfcb271..00000000
--- a/Source/SPPreferenceControllerDelegate.h
+++ /dev/null
@@ -1,42 +0,0 @@
-//
-//  SPPreferenceControllerDelegate.h
-//  sequel-pro
-//
-//  Created by Stuart Connolly (stuconnolly.com) on October 31, 2010.
-//  Copyright (c) 2010 Stuart Connolly. All rights reserved.
-//
-//  Permission is hereby granted, free of charge, to any person
-//  obtaining a copy of this software and associated documentation
-//  files (the "Software"), to deal in the Software without
-//  restriction, including without limitation the rights to use,
-//  copy, modify, merge, publish, distribute, sublicense, and/or sell
-//  copies of the Software, and to permit persons to whom the
-//  Software is furnished to do so, subject to the following
-//  conditions:
-//
-//  The above copyright notice and this permission notice shall be
-//  included in all copies or substantial portions of the Software.
-//
-//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-//  OTHER DEALINGS IN THE SOFTWARE.
-//
-//  More info at <https://github.com/sequelpro/sequelpro>
-
-#import "SPPreferenceController.h"
-
-/**
- * @category SPPreferenceControllerDelegate SPPreferenceControllerDelegate.h
- *
- * @author Stuart Connolly http://stuconnolly.com/
- *
- * Preference controller delegate category.
- */
-@interface SPPreferenceController (SPPreferenceControllerDelegate) <NSWindowDelegate>
-
-@end
diff --git a/Source/SPPreferenceControllerDelegate.m b/Source/SPPreferenceControllerDelegate.m
deleted file mode 100644
index 6a16de0f..00000000
--- a/Source/SPPreferenceControllerDelegate.m
+++ /dev/null
@@ -1,131 +0,0 @@
-//
-//  SPPreferenceControllerDelegate.m
-//  sequel-pro
-//
-//  Created by Stuart Connolly (stuconnolly.com) on October 31, 2010.
-//  Copyright (c) 2010 Stuart Connolly. All rights reserved.
-//
-//  Permission is hereby granted, free of charge, to any person
-//  obtaining a copy of this software and associated documentation
-//  files (the "Software"), to deal in the Software without
-//  restriction, including without limitation the rights to use,
-//  copy, modify, merge, publish, distribute, sublicense, and/or sell
-//  copies of the Software, and to permit persons to whom the
-//  Software is furnished to do so, subject to the following
-//  conditions:
-//
-//  The above copyright notice and this permission notice shall be
-//  included in all copies or substantial portions of the Software.
-//
-//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-//  OTHER DEALINGS IN THE SOFTWARE.
-//
-//  More info at <https://github.com/sequelpro/sequelpro>
-
-#import "SPPreferenceControllerDelegate.h"
-
-@implementation SPPreferenceController (SPPreferenceControllerDelegate)
-
-#pragma mark -
-#pragma mark Window delegate methods
-
-/**
- * Trap window close notifications and use them to ensure changes are saved.
- */
-- (void)windowWillClose:(NSNotification *)notification
-{
-	[[NSColorPanel sharedColorPanel] close];
-	
-	// Mark the currently selected field in the window as having finished editing, to trigger saves.
-	if ([[self window] firstResponder]) {
-		[[self window] endEditingFor:[[self window] firstResponder]];
-	}
-}
-
-/**
- * Trap window resize notifications and use them to disable resizing on most tabs
- * - except for the favourites tab.
- */
-- (NSSize)windowWillResize:(NSWindow *)sender toSize:(NSSize)frameSize
-{
-	[[NSColorPanel sharedColorPanel] close];
-	
-	return [sender showsResizeIndicator] ? frameSize : [sender frame].size;
-}
-
-#pragma mark -
-#pragma mark Toolbar delegate methods
-
-- (NSToolbarItem *)toolbar:(NSToolbar *)aToolbar itemForItemIdentifier:(NSString *)itemIdentifier willBeInsertedIntoToolbar:(BOOL)flag
-{		
-    if ([itemIdentifier isEqualToString:SPPreferenceToolbarGeneral]) {
-        return generalItem;
-    }
-	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarTables]) {
-		return tablesItem;
-	}
-	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarNotifications]) {
-		return notificationsItem;
-	}
-	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarAutoUpdate]) {
-		return autoUpdateItem;
-	}
-	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarNetwork]) {
-		return networkItem;
-	}
-	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarEditor]) {
-		return editorItem;
-	}
-	else if ([itemIdentifier isEqualToString:SPPreferenceToolbarShortcuts]) {
-		return shortcutItem;
-	}
-	
-    return [[[NSToolbarItem alloc] initWithItemIdentifier:itemIdentifier] autorelease];
-}
-
-- (NSArray *)toolbarAllowedItemIdentifiers:(NSToolbar *)aToolbar
-{
-    return @[
-			SPPreferenceToolbarGeneral,
-			SPPreferenceToolbarTables,
-			SPPreferenceToolbarNotifications,
-			SPPreferenceToolbarEditor,
-			SPPreferenceToolbarShortcuts,
-			SPPreferenceToolbarAutoUpdate,
-			SPPreferenceToolbarNetwork
-	];
-}
-
-- (NSArray *)toolbarDefaultItemIdentifiers:(NSToolbar *)aToolbar
-{
-	return @[
-			SPPreferenceToolbarGeneral,
-			SPPreferenceToolbarTables,
-			SPPreferenceToolbarNotifications,
-			SPPreferenceToolbarEditor,
-			SPPreferenceToolbarShortcuts,
-			SPPreferenceToolbarAutoUpdate,
-			SPPreferenceToolbarNetwork
-	];
-}
-
-- (NSArray *)toolbarSelectableItemIdentifiers:(NSToolbar *)aToolbar
-{
-	return @[
-			SPPreferenceToolbarGeneral,
-			SPPreferenceToolbarTables,
-			SPPreferenceToolbarNotifications,
-			SPPreferenceToolbarEditor,
-			SPPreferenceToolbarShortcuts,
-			SPPreferenceToolbarAutoUpdate,
-			SPPreferenceToolbarNetwork
-	];
-}
-
-@end
diff --git a/Source/SPSQLParser.m b/Source/SPSQLParser.m
index d9bec2eb..3e37cc0a 100644
--- a/Source/SPSQLParser.m
+++ b/Source/SPSQLParser.m
@@ -41,7 +41,7 @@ typedef struct to_buffer_state *TO_BUFFER_STATE;
 void to_switch_to_buffer(TO_BUFFER_STATE);
 TO_BUFFER_STATE to_scan_string (const char *);
 
-@interface SPSQLParser (PrivateAPI)
+@interface SPSQLParser ()
 
 - (unichar) _charAtIndex:(NSInteger)index;
 - (void) _clearCharCache;
@@ -53,7 +53,7 @@ TO_BUFFER_STATE to_scan_string (const char *);
  * Please see the header files for a general description of the purpose of this class,
  * and increased overview detail for the functions below.
  */
-@implementation SPSQLParser : NSMutableString
+@implementation SPSQLParser
 
 #pragma mark -
 #pragma mark Parser information
@@ -1044,11 +1044,7 @@ TO_BUFFER_STATE to_scan_string (const char *);
 	[super dealloc];
 }
 
-@end
-
-#pragma mark -
-
-@implementation SPSQLParser (PrivateAPI)
+#pragma mark - Private API
 
 /**
  * Provide a method to retrieve a character from the local cache.
diff --git a/Source/SPSplitView.m b/Source/SPSplitView.m
index 467e0cd1..34cb4250 100644
--- a/Source/SPSplitView.m
+++ b/Source/SPSplitView.m
@@ -32,7 +32,7 @@
 #import "SPDateAdditions.h"
 #include <stdlib.h>
 
-@interface SPSplitView (Private_API)
+@interface SPSplitView ()
 
 - (void)_initCustomProperties;
 - (void)_ensureDefaultSubviewSizesToIndex:(NSUInteger)anIndex;
@@ -692,13 +692,9 @@
 	}
 }
 
-@end
-
 #pragma mark -
 #pragma mark Private API
 
-@implementation SPSplitView (Private_API)
-
 - (void)_initCustomProperties
 {
 	collapseToggleButton = nil;
diff --git a/Source/SPTableFilterParser.m b/Source/SPTableFilterParser.m
index f7c9ed62..93b976f8 100644
--- a/Source/SPTableFilterParser.m
+++ b/Source/SPTableFilterParser.m
@@ -31,7 +31,7 @@
 #import "SPTableFilterParser.h"
 #import "RegexKitLite.h"
 
-@interface SPTableFilterParser (Private)
+@interface SPTableFilterParser ()
 + (NSString *)escapeFilterArgument:(NSString *)argument againstClause:(NSString *)clause;
 @end
 
diff --git a/Source/SPTableView.m b/Source/SPTableView.m
index df48a407..1c2bef25 100644
--- a/Source/SPTableView.m
+++ b/Source/SPTableView.m
@@ -34,8 +34,8 @@
 #import "SPWindowController.h"
 #import "SPFieldMapperController.h"
 
-@interface SPTableView (SPTableViewDelegate)
-
+@protocol SPTableViewDelegate <NSObject>
+@optional
 - (BOOL)cancelRowEditing;
 
 @end
@@ -212,7 +212,7 @@
 
 	// Check if ESCAPE is hit and use it to cancel row editing if supported
 	else if ([theEvent keyCode] == 53 && [[self delegate] respondsToSelector:@selector(cancelRowEditing)]) {
-		if ([[self delegate] performSelector:@selector(cancelRowEditing)]) return;
+		if ([(id<SPTableViewDelegate>)[self delegate] cancelRowEditing]) return;
 	}
 	
 	// If the Tab key is used, but tab editing is disabled, change focus rather than entering edit mode.
diff --git a/Source/SPTextView.m b/Source/SPTextView.m
index f06bbaef..cb27b8da 100644
--- a/Source/SPTextView.m
+++ b/Source/SPTextView.m
@@ -79,7 +79,7 @@
 
 #pragma mark -
 
-@interface SPTextView (Private_API)
+@interface SPTextView ()
 
 NSInteger _alphabeticSort(id string1, id string2, void *reverse);
 #ifndef SP_CODA
@@ -3695,13 +3695,9 @@ static inline NSPoint SPPointOnLine(NSPoint a, NSPoint b, CGFloat t) { return NS
 	[super dealloc];
 }
 
-@end
-
 #pragma mark -
 #pragma mark Private API
 
-@implementation SPTextView (Private_API)
-
 /**
  * Sort function (mainly used to sort the words in the textView)
  */
diff --git a/Source/SPTooltip.m b/Source/SPTooltip.m
index ff68fdbe..af899129 100644
--- a/Source/SPTooltip.m
+++ b/Source/SPTooltip.m
@@ -71,7 +71,7 @@ static CGFloat slow_in_out (CGFloat t)
 	return t;
 }
 
-@interface SPTooltip (Private)
+@interface SPTooltip ()
 
 - (void)setContent:(NSString *)content withOptions:(NSDictionary *)displayOptions;
 - (void)runUntilUserActivity;
diff --git a/Source/YRKSpinningProgressIndicator.m b/Source/YRKSpinningProgressIndicator.m
index c706e17a..4128acf7 100644
--- a/Source/YRKSpinningProgressIndicator.m
+++ b/Source/YRKSpinningProgressIndicator.m
@@ -31,7 +31,7 @@
 
 #import "YRKSpinningProgressIndicator.h"
 
-@interface YRKSpinningProgressIndicator (YRKSpinningProgressIndicatorPrivate)
+@interface YRKSpinningProgressIndicator ()
 
 - (void)updateFrame:(NSTimer *)timer;
 - (void) animateInBackgroundThread;