dev.stuconnolly.com / svn / safaritabs

  1. /*
  2.  *  $Id: STApplication.m 198 2010-01-06 23:05:30Z stuart $
  3.  *
  4.  *  SafariTabs
  5.  *  http://stuconnolly.com/projects/safaritabs/
  6.  *
  7.  *  Copyright (c) 2010 Stuart Connolly. All rights reserved.
  8.  *
  9.  *  This program is free software: you can redistribute it and/or modify
  10.  *  it under the terms of the GNU General Public License as published by
  11.  *  the Free Software Foundation, either version 3 of the License, or
  12.  *  (at your option) any later version.
  13.  *
  14.  *  This program is distributed in the hope that it will be useful,
  15.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17.  *  GNU General Public License for more details.
  18.  *
  19.  *  You should have received a copy of the GNU General Public License
  20.  *  along with this program. If not, see <http://www.gnu.org/licenses/>.
  21.  */
  22.  
  23. #import "STApplication.h"
  24.  
  25. @implementation NSApplication (STApplication)
  26.  
  27. /*!
  28.  * Returns the application's undo manager if one is not already initialized.
  29.  *
  30.  * @return The application's undo manager
  31.  */
  32. - (NSUndoManager *)undoManager
  33. {
  34.     static NSUndoManager *undoManager = nil;
  35.    
  36.     if (undoManager == nil) {
  37.         undoManager = [[[NSUndoManager alloc] init] retain];
  38.     }
  39.    
  40.     return undoManager;
  41. }
  42.  
  43. @end
  44.