Transport Interface

Using the Transport Interface

Store a reference to your routing slip template in the

routingSlip

slot in your

transport object.

Use the

protoFullRouteSlip

template, described in the following section, to

create a routing slip.

One additional proto for use in routing slips is described in the section "Using
protoAddressPicker" (page 22-31).

Using protoFullRouteSlip

22

This routing slip proto already includes most of the elements required in a routing
slip. Figure 22-3 shows an example of this proto. For a complete description of the
slots and methods in this proto, see "protoFullRouteSlip" (page 19-38) in Newton
Programmer's Reference.

protoFullRouteSlip

view

The transport name and stamp icon in the upper-right corner of the routing slip are
automatically supplied. They are based on the transport

.actionTitle

and

.icon

slots.

The format picker child in

protoFullRouteSlip

provides the picker list for

choosing among multiple formats. The current format is initially displayed. The
picker provides for opening an auxiliary view if one is associated with the current
format. This child view uses the

currentFormat

slot in the item (the

fields.currentFormat

slot in the routing slip), a list of routing formats

compatible with the item, and the

activeFormat

slot in the routing slip to set up

the picker with the correct choices. These slots are set up by the system.

When the user picks another format, the

activeFormat

slot is updated, which

changes the format choice shown next to the label. Additionally, the

SetDefaultFormat

message is sent to the application, and

currentFormat

in

Sender pop-up

Format picker

Send button

Cancel button

(Appears only if there are multiple formats)

This is a picker if there are multiple
transports in the group