This is basically an approach to bring the popular UINavigationController to Mac OS X.
BFNavigationController is easy to use and works almost exactly like a UINavigationController. All method names (and respective functionalities) have been derived from UINavigationController. You can therefore just look into Apple's UIKit online documentation (http://developer.apple.com/library/ios/#documentation/uikit/reference/UINavigationController_Class/Reference/Reference.html) for further references.
In contrast to their iOS counterparts, Mac apps should of course be more flexible when it comes to custom window sizes and layouts. Hence, you can intialize your BFNavigationController by providing an NSRect:
_navigationController = [[BFNavigationController alloc] initWithFrame: YOUR_RECT rootViewController: YOUR_VIEW_CONTROLLER];
[_window.contentView addSubview: _navigationController.view];
Navigation- and toolbars haven't been implemented yet. However, you can easily hook in some custom bars.
Setting a BFNavigationControllerDelegate and implementing the methods -navigationController:willShowViewController:animated: and -navigationController:didShowViewController:animated:
could be the perfect way to do this.
BFNavigationController is licensed under MIT License. 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.