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diff --git a/Source/SPWindowManagement.m b/Source/SPWindowManagement.m
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+//
+//  $Id$
+//
+//  SPWindowManagement.m
+//  Sequel Pro
+//
+//  Created by Stuart Connolly (stuconnolly.com) on July 7, 2012
+//  Copyright (c) 2012 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.
+
+#import "SPWindowManagement.h"
+#import "SPWindowController.h"
+#import "SPDatabaseDocument.h"
+
+@implementation SPAppController (SPWindowManagement)
+
+/**
+ * Create a new window, containing a single tab.
+ */
+- (IBAction)newWindow:(id)sender
+{
+	static NSPoint cascadeLocation = {.x = 0, .y = 0};
+	
+	// Create a new window controller, and set up a new connection view within it.
+	SPWindowController *newWindowController = [[SPWindowController alloc] initWithWindowNibName:@"MainWindow"];
+	NSWindow *newWindow = [newWindowController window];
+	
+	// Cascading defaults to on - retrieve the window origin automatically assigned by cascading,
+	// and convert to a top left point.
+	NSPoint topLeftPoint = [newWindow frame].origin;
+	topLeftPoint.y += [newWindow frame].size.height;
+	
+	// The first window should use autosaving; subsequent windows should cascade.
+	// So attempt to set the frame autosave name; this will succeed for the very
+	// first window, and fail for others.
+	BOOL usedAutosave = [newWindow setFrameAutosaveName:@"DBView"];
+	
+	if (!usedAutosave) {
+		[newWindow setFrameUsingName:@"DBView"];
+	}
+	
+	// Add the connection view
+	[newWindowController addNewConnection:self];
+	
+	// Cascade according to the statically stored cascade location.
+	cascadeLocation = [newWindow cascadeTopLeftFromPoint:cascadeLocation];
+	
+	// Set the window controller as the window's delegate
+	[newWindow setDelegate:newWindowController];
+	
+	// Show the window, and perform frontmost tasks again once the window has drawn
+	[newWindowController showWindow:self];
+	[[newWindowController selectedTableDocument] didBecomeActiveTabInWindow];
+}
+
+/**
+ * Create a new tab in the frontmost window.
+ */
+- (IBAction)newTab:(id)sender
+{
+	SPWindowController *frontController = nil;
+	
+	for (NSWindow *aWindow in [NSApp orderedWindows]) 
+	{
+		if ([[aWindow windowController] isMemberOfClass:[SPWindowController class]]) {
+			frontController = [aWindow windowController];
+			break;
+		}
+	}
+	
+	// If no window was found, create a new one
+	if (!frontController) {
+		[self newWindow:self];
+	} 
+	else {
+		if ([[frontController window] isMiniaturized]) {
+			[[frontController window] deminiaturize:self];
+		}
+		
+		[frontController addNewConnection:self];
+	}
+}
+
+/**
+ * Duplicate the current connection tab
+ */
+- (IBAction)duplicateTab:(id)sender
+{
+	SPDatabaseDocument *theFrontDocument = [self frontDocument];
+	
+	if (!theFrontDocument) return [self newTab:sender];
+	
+	// Add a new tab to the window
+	if ([[self frontDocumentWindow] isMiniaturized]) {
+		[[self frontDocumentWindow] deminiaturize:self];
+	}
+	
+	[[[self frontDocumentWindow] windowController] addNewConnection:self];
+	
+	// Get the state of the previously-frontmost document
+	NSDictionary *allStateDetails = [NSDictionary dictionaryWithObjectsAndKeys:
+									 [NSNumber numberWithBool:YES], @"connection",
+									 [NSNumber numberWithBool:YES], @"history",
+									 [NSNumber numberWithBool:YES], @"session",
+									 [NSNumber numberWithBool:YES], @"query",
+									 [NSNumber numberWithBool:YES], @"password",
+									 nil];
+	
+	NSMutableDictionary *frontState = [NSMutableDictionary dictionaryWithDictionary:[theFrontDocument stateIncludingDetails:allStateDetails]];
+	
+	// Ensure it's set to autoconnect
+	[frontState setObject:[NSNumber numberWithBool:YES] forKey:@"auto_connect"];
+	
+	// Set the connection on the new tab
+	[[self frontDocument] setState:frontState];
+}
+
+/**
+ * Retrieve the frontmost document window; returns nil if not found.
+ */
+- (NSWindow *)frontDocumentWindow
+{
+	for (NSWindow *aWindow in [NSApp orderedWindows]) {
+		if ([[aWindow windowController] isMemberOfClass:[SPWindowController class]]) {
+			return aWindow;
+		}
+	}
+	
+	return nil;
+}
+
+/**
+ * When tab drags start, bring all the windows in front of other applications.
+ */
+- (void)tabDragStarted:(id)sender
+{
+	[NSApp arrangeInFront:self];
+}
+
+@end