Building Cocoa Applications: A Step by Step Guide

Creating PaperController, a Subclass of NSWindowController

In this section, we will create our initial PaperController class with the method that starts up Evaluator:

1. Double-click the PaperWindow.nib file in PB’s main window to open it up in IB.

2. Select the Classes tab in the PaperWindow.nib window.

3. Select the NSWindowController class (under NSObject — use the Search field if necessary).

4. Choose the Classes → Subclass NSWindowController menu command, as shown in Figure 11-9.

Figure 11-9. Subclassing NSWindowController

1. Type Command-1 to display the myWindowController Class Info panel.

2. Change the name of your new subclass from “MyWindowController” to “PaperController”.

3. Add a new outlet named “theText” (note that there is already an outlet called “window”).

4. Select the File’s Owner under the Instances tab in the PaperWindow.nib window.

5. Type Command-5 and change the Custom Class of the File’s Owner to PaperController (because the PaperController will load the PaperWindow.nib file).

6. Control-drag from the File’s Owner icon to the text area inside the window and double-click theText to make a connection, as shown in Figure 11-10.

Figure 11-10. Connecting File’s Owner to NSTextField inside NSScrollView

1. Now select the PaperController class under the Classes tab in the PaperWindow.nib window.

2. Choose ...