Apple Newton Utilities Uživatelská příručka stáhnout pdf (Strana 188)

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101

CHAPTER 5

Stationery

5-6 Using Stationery

The dataDef component of your stationery should use a FillNewEntry method

to deﬁne its own discrete soup entry structure. Note that it is your responsibility to

set a

class slot within each entry. The value of the class slot must match the

dataDef symbol and is used by the system when routing the entry (via faxing,

mailing, beaming, printing, and so on). An example of how to use

FillNewEntry

follows.

Using FillNewEntry 5

You use the FillNewEntry method in your dataDef to create an entry structure

that is tailored to your data. This approach is recommended when your stationery is

implemented as part of a NewtApp application.

The

FillNewEntry method works in conjunction with the NewtApp

framework’s

newtSoup.CreateBlankEntry method. The FillNewEntry

method takes a new entry, as returned by the

CreateBlankEntry method, as a

parameter. This is done with a

CreateBlankEntry implementation put in the

newtApplication.allSoups slot of your NewtApp application, as shown in

the following example:

CreateBlankEntry: func()

begin

local newEntry := Clone({class:nil,

viewStationery: nil,

title: nil,

timeStamp: nil,

height: 176});

newEntry.title := ShortDate(time());

newEntry.timeStamp := time();

newEntry;

end;

This new entry contains an entry template. In the following code example, that

new entry is passed as a parameter to the

FillNewEntry method, which is

implemented in the stationery’s dataDef.

FillNewEntry adds a slot named

kDataSymbol, which contains an entry template for the stationery’s data

deﬁnition. It then adds a

class slot to the new entry, which is set to the same

constant (

kDataSymbol). A viewStationery slot is then added and set to the

same constant (only needed for vestigial compatibility with the Notes application).

Finally, it adds a value to the

dueDate slot of the kDataSymbol entry.

FillNewEntry: func(newEntry)

begin

newEntry.(kDataSymbol) :=

Clone({who: "A Name",

howMuch: 42,

dueDate: nil});

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