Apple WebObjects 3.5 Manuale Utente Scaricare il pdf (Pagina 113)

Updating Objects in the Detail Display Group

113

Adding a Form

Now lay out the user interface used to view and edit the selected

MovieRole. When you’re done, it should look like the following:

1. Add another horizontal rule after the repetition.

2. Use the button (in the “Dynamic form elements” toolbar) to add a

browser element between the two horizontal rules.

A form element is automatically created around the browser.

3. Beneath the browser, type the bolded text

Role Name:.

4. Add a text ﬁeld.

5. Bind the text ﬁeld to

movieRoleDisplayGroup.selectedObject.roleName.

Adding a Talent Display Group

The browser you just created is going to display a list of Talent objects. Like

a repetition element, a browser has

list and item attributes. As the browser

moves through its

list, the browser sets item to the object at the current index.

The Movies application uses a display group to provide the browser with a

list of Talent objects, so now you need to create the new display group and

a variable to bind to the browser’s

item attribute.

1. Use the Add Variable/Method command to create two new instance

variables:

•

talentDisplayGroup, whose type is DisplayGroup

•

talent, whose type is Talent

You don’t need to add set and get methods for the variables.

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Apple WebObjects 3.5 Manuale Utente Pagina 113