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CHAPTER 19

Built-in Applications and System Data

Names 19-5

Here is an example of an infoFrame for a Names viewDef deﬁning a view that

has two ﬁelds,

Make and Model:

infoFrame:{checkPaths: '[carMake, carModel],

checkPrefix: '[true, [pathExpr: carInfo]],

stringData: nil,

format: "^?0Make: ^0\n||^?1Model: ^1||" }

When chosen from the Add picker the ﬁrst time, this view initially fills in the

carMake and carModel slots in the soup entry with the user’s entries. If chosen

again, this view creates an array called

carInfo containing one frame for each

additional data set. These frames would look like this:

{carMake: make, carModel: model}

The reason this is necessary is that after information for the ﬁrst car is entered, the

soup entry will contain the slots

carMake and carModel. The information for the

second car could not also be stored in the

carMake and carModel slots of the

soup entry. Instead a

carInfo slot is added to the soup entry, this slot holds a

frame containing

carMake and carModel slots.

When a view from the Add picker is instantiated, the system creates a slot called

selectedPath in the view that was instantiated. This slot is set to the path

expression where data should be entered (or to

nil if the data should be entered

directly into the soup entry). For example, when chosen from the Add picker the

ﬁrst time, the view in this example would have its

selectedPath slot set to nil,

meaning that the information should be put directly into the soup entry. When

chosen from the picker the second time, the

selectedPath slot is set to

[pathExpr: carInfo, 0], to indicate that the new car information should go

into the ﬁrst frame in the

carInfo array. The third time, selectedPath is set to

[pathExpr: carInfo, 1], and so on.

Adding a New Card Layout Style 19

When the “Card” layout is selected in the Show picker, the Names application

looks at the

cardType slot of the current card to determine which kind of business

card layout to use for that card. You can create new viewDefs and register them

with the Names application to use a custom card layouts. Card viewDefs must have

the

type slot set to 'bizcard, and must contain a bizCardNum slot and a

bizCardIcon slot.

The

bizCardNum slot contains an integer that corresponds to the value stored in

the

cardType slot of the card entries. The values 0-6 correspond to the business

card layouts that are built into the system. You should pick integers over 1,000 to

use as a

bizCardNum, and register your number with Newton DTS.

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