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diff --git a/Source/SPComboPopupButton.m b/Source/SPComboPopupButton.m
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+//
+//  $Id$
+//
+//  SPComboPopupButton.m
+//  sequel-pro
+//
+//  Created by Rowan Beentje (rowan.beent.je) on March 22, 2013
+//  Copyright (c) 2013 Rowan Beentje. 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 <http://code.google.com/p/sequel-pro/>
+
+#import "SPComboPopupButton.h"
+
+#define kSPComboPopupButtonLineOffsetMini 13;
+#define kSPComboPopupButtonLineOffsetSmall 15;
+#define kSPComboPopupButtonLineOffsetRegular 17;
+
+@interface SPComboPopupButton (PrivateAPI)
+
+- (void)_initCustomData;
+
+@end
+
+@implementation SPComboPopupButton
+
+@synthesize shouldDrawNonHighlightState;
+@synthesize lineOffset;
+
+#pragma mark -
+#pragma mark Setup
+
+- (id)initWithCoder:(NSCoder *)decoder
+{
+	if ((self = [super initWithCoder:decoder])) {
+		[self _initCustomData];
+	}
+	return self;
+}
+
+- (id)initWithFrame:(NSRect)frameRect pullsDown:(BOOL)flag
+{
+	if ((self = [super initWithFrame:frameRect pullsDown:flag])) {
+		[self _initCustomData];
+	}
+	return self;
+}
+
+/**
+ * Default to the overridden class. Note that this won't apply to instanced
+ * created in a xib, where the cell class should be selected appropriately.
+ */
++ (Class)cellClass
+{
+	return [SPComboPopupButtonCell class];
+}
+
+#pragma mark -
+#pragma mark Drawing
+
+/**
+ * Draw the control, largely leveraging NSPopupButton drawing but with tweaks
+ * to draw a separator line and different highlights if the dropdown area is
+ * selected.
+ */
+- (void)drawRect:(NSRect)dirtyRect
+{
+	NSRect boundsRect = [self bounds];
+	CGFloat boundingLinePosition = boundsRect.origin.x + boundsRect.size.width - lineOffset - 0.5;
+	CGContextRef context = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
+	CGFloat heightIndent = ([self isFlipped] ? 4.f : -4.f);
+
+	// Allow the NSPopupButton to draw the majority of the button, with one exception:
+	// if the menu is open, only draw part of the rectangle highlighted.
+	if (menuIsOpen) {
+
+		// Draw the unhighlighted button state in the left-hand part of the button
+		NSRect partialDirtyRect = NSIntersectionRect(dirtyRect, NSMakeRect(boundsRect.origin.x, boundsRect.origin.y, boundingLinePosition - boundsRect.origin.x, boundsRect.size.height));
+		if (!NSIsEmptyRect(partialDirtyRect)) {
+			CGContextSaveGState(context);
+			CGContextClipToRect(context, NSRectToCGRect(partialDirtyRect));
+			shouldDrawNonHighlightState = YES;
+			[super drawRect:partialDirtyRect];
+			shouldDrawNonHighlightState = NO;
+			CGContextRestoreGState(context);
+		}
+
+		// Draw the right-hand side of the button as normal
+		partialDirtyRect = NSIntersectionRect(dirtyRect, NSMakeRect(boundingLinePosition - 0.5, boundsRect.origin.y, boundsRect.origin.x + boundsRect.size.width + 0.5 - boundingLinePosition, boundsRect.size.height));
+		if (!NSIsEmptyRect(partialDirtyRect)) {
+			CGContextSaveGState(context);
+			CGContextClipToRect(context, NSRectToCGRect(partialDirtyRect));
+			[super drawRect:dirtyRect];
+			CGContextRestoreGState(context);
+		}
+	} else {
+		[super drawRect:dirtyRect];
+	}
+
+	// Draw the divider line for the two parts of the button
+	NSColor *lineBaseColor = [[NSColor lightGrayColor] colorUsingColorSpace:[NSColorSpace deviceRGBColorSpace]];
+	CGFloat lineColorParts[[lineBaseColor numberOfComponents]];
+	CGColorSpaceRef rgbSpace = CGColorSpaceCreateDeviceRGB();
+	[lineBaseColor getComponents:(CGFloat *)&lineColorParts];
+	CGColorRef lineColor = CGColorCreate(rgbSpace, lineColorParts);
+	CGColorRef lineEdgeColor = CGColorCreateCopyWithAlpha(lineColor, 0.1);
+	CGColorRef gradientColors[] = { lineEdgeColor, lineColor, lineColor, lineEdgeColor };
+	CFArrayRef colorArray = CFArrayCreate(NULL, (const void **)gradientColors, 4, &kCFTypeArrayCallBacks);
+	CGFloat gradientPositions[] = { 0.05, 0.25, 0.75, 0.95 };
+	CGGradientRef lineGradient = CGGradientCreateWithColors(rgbSpace, colorArray, gradientPositions);
+
+	CGContextSaveGState(context);
+	CGContextSetStrokeColor(context, lineColorParts);
+	CGContextAddRect(context, CGRectMake(boundingLinePosition - 0.5, boundsRect.origin.y + heightIndent, 1.f, boundsRect.size.height - abs(2 * heightIndent)));
+	CGContextClip(context);
+	CGContextDrawLinearGradient(context, lineGradient, CGPointMake(boundingLinePosition - 0.5, boundsRect.origin.y + heightIndent), CGPointMake(boundingLinePosition - 0.5, boundsRect.origin.y + boundsRect.size.height - abs(heightIndent)), 0);
+	CGContextRestoreGState(context);
+
+	CGGradientRelease(lineGradient);
+	CFRelease(colorArray);
+	CGColorRelease(lineEdgeColor);
+	CGColorRelease(lineColor);
+	CGColorSpaceRelease(rgbSpace);
+}
+
+#pragma mark -
+#pragma mark Click action overrides
+
+- (void)performClick:(id)sender
+{
+	if (actionSelector && actionTarget) {
+		[self sendAction:actionSelector to:actionTarget];
+	}
+}
+
+- (id)target
+{
+	return actionTarget;
+}
+
+- (void)setTarget:(id)anObject
+{
+	actionTarget = anObject;
+}
+
+- (SEL)action
+{
+	return actionSelector;
+}
+
+- (void)setAction:(SEL)aSelector
+{
+	actionSelector = aSelector;
+}
+
+#pragma mark -
+#pragma mark Menu delegate implementation
+
+- (void)menuWillOpen:(NSMenu *)menu
+{
+	menuIsOpen = YES;
+}
+
+- (void)menuDidClose:(NSMenu *)menu
+{
+	menuIsOpen = NO;
+}
+
+@end
+
+#pragma mark -
+
+@implementation SPComboPopupButton (PrivateAPI)
+
+- (void)_initCustomData
+{
+
+	// Set the line position based on the initial control size
+	switch ([[self cell] controlSize]) {
+		case NSMiniControlSize:
+			lineOffset = kSPComboPopupButtonLineOffsetMini;
+		break;
+		case NSSmallControlSize:
+			lineOffset = kSPComboPopupButtonLineOffsetSmall;
+		break;
+		default:
+			lineOffset = kSPComboPopupButtonLineOffsetRegular;
+		break;
+	}
+
+	// Track when the menu is open via delegate methods
+	menuIsOpen = NO;
+	[[[self cell] menu] setDelegate:self];
+
+	// Move any xib-specified action and target for use as the button target
+	actionSelector = [super action];
+	[super setAction:NULL];
+	actionTarget = [super target];
+	[super setTarget:nil];
+}
+
+@end
+
+#pragma mark -
+
+@interface SPComboPopupButtonCell (PrivateAPI)
+
+- (void)_initCustomData;
+
+@end
+
+@implementation SPComboPopupButtonCell
+
+/**
+ * Indent the title slightly to take account of the additional divider
+ */
+- (NSRect)drawTitle:(NSAttributedString *)title withFrame:(NSRect)frame inView:(NSView *)controlView
+{
+	frame.size.width -= 1;
+	return [super drawTitle:title withFrame:frame inView:controlView];
+}
+
+/**
+ * Allow the button to overwrite the draw status as required
+ */
+- (BOOL)isHighlighted
+{
+	if ([(SPComboPopupButton *)[self controlView] shouldDrawNonHighlightState]) {
+		return NO;
+	}
+	return [super isHighlighted];
+}
+
+#pragma mark -
+#pragma mark Custom interaction handling
+
+- (BOOL)trackMouse:(NSEvent *)theEvent inRect:(NSRect)cellFrame ofView:(NSView *)controlView untilMouseUp:(BOOL)untilMouseUp
+{
+	NSPoint thePoint;
+	NSRect activeRect;
+	CGFloat heightIndent = ([controlView isFlipped] ? 2.f : -2.f);
+	BOOL mouseInButton = YES;
+	BOOL trackAsPerMenuButton = NO;
+
+	// If the event isn't a mouse button event, allow the NSPopUpButtonCell to handle it
+	if ([theEvent type] != NSLeftMouseDown) {
+		trackAsPerMenuButton = YES;
+	}
+
+	// If the view doesn't support line position checks, pass on the event
+	else if (![controlView respondsToSelector:@selector(lineOffset)]) {
+		trackAsPerMenuButton = YES;
+	}
+
+	// If the click is to the right of the line, show the menu
+	else if ([controlView convertPoint:theEvent.locationInWindow fromView:nil].x + [(SPComboPopupButton *)controlView lineOffset] >= [controlView frame].size.width) {
+		trackAsPerMenuButton = YES;
+	}
+
+	if (trackAsPerMenuButton) {
+		return [super trackMouse:theEvent inRect:cellFrame ofView:controlView untilMouseUp:untilMouseUp];
+	}
+
+
+	// Custom tracking to be performed - indent the vertical button area slightly
+	activeRect = NSMakeRect(cellFrame.origin.x, cellFrame.origin.y + heightIndent, cellFrame.size.width - [(SPComboPopupButton *)controlView lineOffset] + 1, cellFrame.size.height - fabsf(2 * heightIndent));
+
+	// Continue tracking the mouse while it's down, updating the state as it enters and leaves the cell,
+	// until it is released; if still within the cell, perform a click.
+	while ([theEvent type] != NSLeftMouseUp) {
+		thePoint = [controlView convertPoint:[theEvent locationInWindow] fromView:nil];
+
+		if (NSMouseInRect(thePoint, activeRect, [controlView isFlipped]) != mouseInButton) {
+			mouseInButton = !mouseInButton;
+			[self setHighlighted:mouseInButton];
+		}
+
+		theEvent = [[controlView window] nextEventMatchingMask:(NSLeftMouseUpMask | NSLeftMouseDraggedMask)];
+	}
+
+	// If the mouse is still inside the button area, perform a click action and restore state
+	if (mouseInButton) {
+		if ([controlView respondsToSelector:@selector(performClick:)]) {
+			[(NSControl *)controlView performClick:self];
+		}
+		[self setHighlighted:NO];
+	}
+
+	return YES;
+}
+
+@end