The Save and Open Panels

NSSavePanel creates and manages a Save panel, and allows you to run the panel in a modal loop. The Save panel provides a simple way for a user to specify a file to use when saving a document or other data. It can restrict the user to files of a certain type, as specified by an extension. It also allows you to do several other things with the Save panel:

• Add an accessory view to the panel.

• Customize the user interface of the panel, including the Hide Extension check box and the New Folder button.

• Modify the behavior of the panel through messages exchanged with a delegate.

NSOpenPanel provides the Open panel for the Cocoa user interface. Applications use the Open panel as a convenient way to query the user for the name of a file to open. The Open panel can only be run modally.

Most of this class’s behavior is defined by its superclass, NSSavePanel. NSOpenPanel adds to this behavior by:

• Letting you specify the types (by file-name extension or encoded HFS file type) of the items that will appear in the panel

• Letting the user select files, directories, or both

• Letting the user select multiple items at a time