Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 153)

C H A P T E R 4
NewtApp Applications
Using NewtApp 4-15
■ Optional. Set the statusBarSlot to contain the declared name of the status
bar so layouts can use it to control the buttons displayed on it. Use the symbol
'status to set it.
If you wish to override a system message like ViewSetupFormScript , which is
called before a view is displayed on the screen, make sure to call the inherited
method at the end of your own
ViewSetupFormScript method. Also, you may
wish to add a ReOrientToScreen method to the newtApplication base
view so your application can rotate to a landscape display. This message is sent to
each child of the root view when the screen orientation is changed. See
ReOrientToScreen (page 2-73) in Newton Programmer’s Reference for details.
Finally, be sure to add the layout file baseView.t to your project and mark it as
the application base view.
Tying Layouts Into the Main Application 4
The allLayouts slot in the newtApplication proto is a frame that contains
symbols for the application’s layout files. It must contain two slots, named
default and overview, that refer to the two layout files used for those
respective views.
The section “Using the Layout Protos,” beginning on page 4-16, shows how to use
the NewtApp layout protos to construct these files. Assume they are named Default
Layout and Overview Layout for the purpose of setting the references to them in
the
allLayouts slot. The following code segment sets the allLayouts slot
appropriately:
allLayouts:= {
default: GetLayout("Default Layout"),
overview: GetLayout("Overview Layout"),
}
Setting Up the Application Soup 4
The newtApplication proto uses the values in its allSoups slot to set up and
register your soup with the system.
The framework also looks in the allSoups slot to get the appropriate
soup information for each layout. It does this by matching the value of
the layout’s
masterSoupSlot to the name of a frame contained in the
newtApplication.allSoups slot. See the section “Using the Layout Protos,”
following this one.
This application contains only one soup, though a NewtApp application can
contain more than one. Each soup defined for a NewtApp application must be
based on the
newtSoup proto. The slots soupName , soupIndices , and
soupQuery must be defined within the allSoups soup definition frame.