<mx:Binding source="String(countries.value)"
destination="vo.country"/>
The value of ComboBox is typed as Object, but if it’s a String
then you can cast it.
Untyping variables is generally a poor workaround J
Matt
From: Tom Fitzpatrick
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 15, 2005 9:16
AM
To: [email protected]
Subject: RE: [flexcoders] ComboBox
databinding
At 10:44 AM 3/15/2005, you wrote:
Abdul -
That worked - thanks!
I'm still troubled as to why I can't set types for
the variables in my
value object, though - if anyone has an idea.
- Tom
>I leave this for Matt, he is Binding guru :)
>
>I just removed type annotation from VO
>
>class EmployeeOptions
>{
>
public var firstname;
>
public var lastname;
>
public var country;
>}
>
>
>
>I see no error....
>
>Stay tuned..
>
>-abdul
>
>
>-----Original Message-----
>From: Tom Fitzpatrick
[mailto:[EMAIL PROTECTED]
>Sent: Tuesday, March 15, 2005 6:58 PM
>To: [email protected]
>Subject: RE: [flexcoders] ComboBox databinding
>
>
>Hi -
>
>Your example works fine, but when I try to
achieve a similar binding using
>a value object defined as an external class, I
get a type mismatch error:
>
>"Type mismatch in assignment statement:
found Object where String is
>required".
>
>Here are some more details of my test setup.
>
>I have a value object defined as a class:
>
>class EmployeeOptions
>{
>
public var firstname:String;
>
public var lastname:String;
>
public var country:String;
>}
>
>In a component called Employee, I've
instantiated the class as:
>
><EmployeeOptions id="vo"/>
>
>I'm trying to bind it from text fields and the
comboBox this way:
>
>
<mx:Binding source="firstName.text"
destination="vo.firstname" />
>
<mx:Binding source="lastName.text"
destination="vo.lastname" />
>
<mx:Binding source="countries.value"
destination="vo.country"/>
>
>To return values to my component, I've created
a delegate called
>EmployeeDelegate. This is instantiated in the
component as:
>
><EmployeeDelegate
id="delegate"/>
>
>I'm trying to call methods in the delegate to
populate the component with
>constructions such as:
>
><mx:Label id="Name"
>text="{delegate.getEmployeeName(vo.firstname,vo.lastname)}"/>
>
>This setup works just fine with the text
fields, but the comboBox gives me
>the type mismatch error when I use the above
bindings.
>
>Help!
>
>- Tom
>
>
>
>
>
>At 08:38 PM 3/14/2005, you wrote:
> >Hi,
> >
> >I don't have the book so couldn't look at
the code...I know code is
> >available somewhere online, but me being
lazy :)
> >
> >However, following code might help you...
> >
> >###mxBindingTest.mxml###
> ><mx:Application width="800"
height="600"
> >xmlns:mx="<<http://www.macromedia.com/2003/mxml>http://www.macromedia.com
> /2003/mxml>http://www.macromedia.com/20
>03/mxml"
> > >
> >
> >
<!-- Form contains user input controls. -->
>
>
<mx:Form label="Employee Information">
>
>
<mx:FormItem label="First Name">
>
>
<mx:TextInput id="firstName" />
>
>
</mx:FormItem>
>
>
<mx:FormItem label="Last Name">
>
>
<mx:TextInput id="lastName" />
>
>
</mx:FormItem>
>
>
<mx:FormItem label="Department">
>
>
<mx:TextInput id="department" />
>
>
</mx:FormItem>
>
>
<mx:FormItem label="Email Address">
>
>
<mx:TextInput id="email" />
>
>
</mx:FormItem>
>
>
<mx:FormItem label="Country">
>
>
<mx:ComboBox id="countries" >
>
>
<mx:dataProvider>
>
>
<mx:Array>
> >
<mx:String>India</mx:String>
>
>
<mx:String>USA</mx:String>
>
>
</mx:Array>
>
>
</mx:dataProvider>
>
>
</mx:ComboBox>
>
>
</mx:FormItem>
>
>
</mx:Form>
> >
> >
<!-- The myEmployee data model -->
> >
<mx:Model id="myEmployee">
>
>
<name>
>
>
<first/>
>
>
<last/>
>
>
</name>
>
>
<department/>/
>
>
<email/>
>
>
<country />
> >
</mx:Model>
> >
> >
<!-- Properties of user interface controls are bound to the
> >
myEmployee data model using <mx:Binding> tags -->
> >
> >
<mx:Binding source="firstName.text"
>
>destination="myEmployee.name.first" />
> >
<mx:Binding source="lastName.text"
>
>destination="myEmployee.name.last" />
> >
<mx:Binding source="department.text"
> >destination="myEmployee.department"/>
> >
<mx:Binding source="email.text"
destination="myEmployee.email"/>
> >
<mx:Binding source="countries.value"
>
>destination="myEmployee.country"/>
> >
> >
> >
<mx:TextInput text="{myEmployee.country}"/>
> >
> >
> >
</mx:Application>
> >
> >
> >
> >Notice how combobox box is bound toa
Model and Model is bound to
> >TextInput...
> >
> >-abdul
> >
> >-----Original Message-----
> >From: Tom Fitzpatrick
[mailto:[EMAIL PROTECTED]
> >Sent: Tuesday, March 15, 2005 6:01 AM
> >To: [email protected]
> >Subject: [flexcoders] ComboBox
databinding
> >
> >
> >I'm trying to create an applicationbased
on the LoanCalculator example in
> >the Webster/McLeod book.
> >
> >Everything's working fine for simple
bindings between text inputs on a form
> >and the value object. Where I'm having
trouble creating a databinding
> >between a comboBox in the form and the
value object. When the user selects
> >an item in the comboBox it should be
stored as a string in the value
>object.
> >
> >What's the way to accomplish this? All
the value object variables are
> >public, as in the book example.
> >
> >Specifically, what would the
<mx:Binding/> statement look like? A simple
> >example would be even better.
> >
> >Thanks.
> >
> >- Tom
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
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