Apple Newton Utilities User's Guide download pdf (Page 235)

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CHAPTER 6

Pickers, Pop-up Views, and Overviews

Roll Protos 6-35

Roll Protos 6

You can use the protos described in this section to present roll views in your

applications. A roll view is one that contains several discrete subviews that are

arranged vertically. The roll can be viewed in overview mode, in which each

subview is represented by a one-line description. Any or all of the subviews can be

expanded to full size. The individual subviews are contained in objects based on

protoRollItem.

The Newton system software provides the following roll protos:

■ The protoRoll provides a roll-like view that includes a series of individual

items. The user can see the items either as a collapsed list of one-line overviews

or as full-size views. When the user taps an overview line, all the full-size views

are displayed, with the tapped view shown at the top of the roll. For information

about the slots and methods for this proto, see “protoRoll” (page 5-112) in

Newton Programmer’s Reference. Figure 6-44 shows an example of a

protoRoll.

Figure 6-44 A protoRoll example

■ The protoRollBrowser is similar to protoRoll, except that

protoRollBrowser creates a self-contained application based on the

protoApp, described in “protoApp” (page 1-2) in Newton Programmer’s

Reference. See “protoRollBrowser” (page 5-116) in Newton Programmer’s

Reference for information about the slots and methods for this proto.

Figure 6-45 shows an example of a

protoRollBrowser:

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