Apple Newton Utilities Guia do Utilizador descarregar pdf (Página 305)

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CHAPTER 8

Text and Ink Input and Display

Using Text 8-13

The slots of protoRichInputLine are described in “protoRichInputLine”

(page 7-19) in Newton Programmer’s Reference.

protoLabelInputLine 8

This proto deﬁnes a view that features a label, accepts any kind of input, and is

left-justiﬁed. The

protoLabelInputLine can optionally include a picker.

When the

protoLabelInputLine does include a picker, the user selects a

choice from the picker. That choice is entered as the text in the input line, and is

marked with a check mark in the picker.

Figure 8-2 shows an example of a

protoLabelInputLine with and without the

picker option:

Figure 8-2 An example of a protoLabelInputLine

The protoLabelInputLine is based on a view of the clParagraphView

class. It has two child views:

■ The labelLine child view uses the protoStaticText proto to create the

static text label and to activate the picker if the proto includes one.

■ The entryLine child view uses the protoInputLine proto to create the

input ﬁeld into which the user writes text. The text value entered into this ﬁeld is

stored in the

text slot of this view.

You can have your label input line protos remember a list of recent items. To do

this, assign a symbol that incorporates your developer signature to the

'memory

slot of your prototype. The system automatically maintains the list of recent

items for your input line. To access the list, use the same symbol with the

AddMemoryItem, AddMemoryItemUnique, GetMemoryItems, and

GetMemorySlot functions, which are described in “Utility Functions” (page 26-1).

Picker option

indicated by

diamond

Example of a picker displayed after lable is tapped.

Check mark indicates the currently selected choice.

Simple

protLableInputLine

(no picker option)

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