Version: 1.0

Posted: 2007-06-07

Build Requirements: Mac OS X v10.4, Xcode 2.4

Runtime Requirements: Mac OS X v10.4

View Source Code:

Download Sample (“SimpleBindingsAdoption.zip”, 164.5K)
Download Sample (“SimpleBindingsAdoption.dmg”, 187.4K)


Description

This simple example illustrates the adoption of Cocoa Bindings to manage synchronization of values between models and views.

The example is a simple document-based application. Each document has a window with a text field, slider, and button. The values of the text field and slider represent the volume in a Track object managed by the document. The Mute button sets the volume to zero.

There are three versions of the application:

1. Using target-action to update the track's volume when the user presses Enter in the text field or moves the slider. The user interface is updated programmatically.

2. Programmatically: creating an object controller; binding its content to the track object; and binding the values of the text field and slider to the track's volume. The user interface is updated using bindings.

3. In Interface Builder: creating an object controller; binding its content to the track object; and binding the values of the text field and slider to the track's volume. The user interface is updated using bindings.

Document Revision History

Date Notes
2007-06-07A simple example that illustrates the adoption of Cocoa Bindings.

Did this document help you?
Yes: Tell us what works for you.
It’s good, but: Report typos, inaccuracies, and so forth.
It wasn’t helpful: Tell us what would have helped.