Apple Newton Utilities Guía de usuario descargar pdf (Pagina 575)

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CHAPTER 15

Filing

About Filing 15-9

Filing Compatibility Information 15

Version 2.0 of the Newton operating system supports earlier versions of the Filing

interface completely—no code modiﬁcations are required for older ﬁling code to

continue working under the version 2.0 operating system. However, it is strongly

suggested that you update your application to the version 2.0 Filing interface to

take advantage of new features and to remain compatible with future versions of

the Newton operating system. This section provides version 2.0 compatibility

information for applications that use earlier versions of the Filing interface.

Users can now create folders visible only to a speciﬁed application; the folders are

said to be local to that application. Folders created using previous versions of the

Filing interface are visible to all applications when ﬁrst read on a 2.0-based system.

Applications can now ﬁlter the display of items according to the store on which

they reside and according to whether they are ﬁled in local or global folders.

The symbols that represent folders are no longer tied to the strings that represent

them to the user, as they were in previous versions of the Newton operating system.

This new scheme allows you to use the same folder symbol everywhere for a

particular concept, such as a business, while varying the user-visible string

representing that folder; for example the user-visible string could be localized for

various languages.

Applications can now route items directly to a speciﬁed store from the Filing slip.

In addition, registration for notiﬁcation of changes to folder names has been

simpliﬁed.

The

protoFolderTab proto is replaced by the protoNewFolderTab and

protoClockFolderTab protos.

The

protoFilingButton proto now supplies its own borders. You do not need

to enclose the ﬁling button in another view to produce a border around the button.

The

FolderChanged and FilingChanged methods are obsolete. They are

replaced by the

FileThis method and the folder change notiﬁcation mechanism.

If your application supplies a

FileThis method, the system does not send

FolderChanged and FilingChanged messages to your application. Instead of

supplying a

FolderChanged method, your application should register a callback

function with the folder change notiﬁcation mechanism to perform tasks when the

user adds, deletes, or edits folders.

The

FilterChanged method is obsolete; your application should supply a

NewFilingFilter method instead. Your NewFilingFilter method must

update the query that retrieves items matching the current ﬁling category and

perform any other actions that are appropriate, such as redrawing views affected by

the change of ﬁling ﬁlter. If your application supplies a

NewFilingFilter

method, the system does not send

FilterChanged messages to your application.

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