Apple 2 manual Slips, 14Users can move most slips

C H A P T E R 2

Container Views

An auxiliary view appears in front of the view to which it is subordinate. For details on the customary position of a slip and the front-to-back ordering of views, “How Views Work” on page 2-28.

Slips

The most common type of auxiliary view is called a slip. An application can use slips to get detailed user input. For example, the Date Book application displays essential information about meetings and events in its main view but has users input or change details in meeting and event slips. In addition, an application can use slips to display and allow users to change incidental and infrequently accessed information such as the title of an item or preference settings. Slips can also request responses and present alternatives that specify how an action should be completed. For example, a slip for routing e-mail should insist the user enter an e-mail address, without which the e-mail cannot be sent, and the slip offers numerous options that affect what the e-mail message includes.

Most slips are movable, but some are stationary. Movable slips provide more flexibility for someone using your application. If a user wants to see something under a movable slip while the slip is open, the user can drag the slip out of the way. To see something under a stationary slip, a user has no choice but to close the slip. Figure 2-14 compares slips that move with slips that can’t.

Figure 2-14Users can move most slips

Drag handle

Matte border

Movable slips should have a drag handle and a matte border

Stationary slips do not have a drag handle or a matte border

Auxiliary Views 2-15