Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 770)

C H A P T E R 2 1
Routing Interface
21-22 Using Routing
// which takes targetInfoFrame.target and makes an
// alias, if appropriate
end,
TextScript: func(item,target) begin . . . end,
...
};
Note that one application can have multiple frame formats. You would simply
supply a different
SetupItem method for the different formats (as well as unique
symbol and title slots), to construct the item frame differently.
If your frame format doesn’t support the 'text data type, you should override the
dataTypes slot and set it to ['frame] .
For routing formats that support the 'text data type, you must override the
default TextScript method that obtains the string data, if there are no data
definitions for the data that contain their own TextScript method.
For more information about the slots and methods provided by this proto, see
“Routing Format Protos” (page 18-9) in Newton Programmer’s Reference.
Creating a New Type of Format 21
You create a new type of routing format by using protoRoutingFormat . This is
the base routing format, which serves as a proto for the other routing format protos.
Here is an example of a format based on this proto:
MyNewFormat := {
_proto: protoRoutingformat,
dataTypes: ['binary],
symbol: '|myFormat:SIG|,
title: "Custom",
SetupItem: func(item, targetInfoFrame) begin
call kMyFunkySetup with (item, targetInfoFrame);
end,
...
};
For more information about the slots and methods provided by this proto, see
“Routing Format Protos” (page 18-9) in Newton Programmer’s Reference.
Providing Application-Specific Routing Actions 21
First, to provide the Action button in the user interface of your application, you
must include a view based on the
protoActionButton proto. For details, see
protoActionButton (page 18-7) in Newton Programmer’s Reference.