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Code from Flex 4 Documentation "Using Adobe Flex 4".
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<!-- validators\FullApp.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx">
<s:layout>
<s:VerticalLayout />
</s:layout>
<fx:Script>
import mx.events.ValidationResultEvent;
private var vResult:ValidationResultEvent;
// Function to validate data and submit it to the server.
private function validateAndSubmit():void {
// Validate the required fields.
vResult = fNameV.validate();
if (vResult.type==ValidationResultEvent.INVALID)
return;
vResult = lNameV.validate();
if (vResult.type==ValidationResultEvent.INVALID)
return;
// Since the date requires 3 fields, perform the validation
// when the Submit button is clicked.
vResult = dayV.validate();
if (vResult.type==ValidationResultEvent.INVALID)
return;
// Invoke any other validators or validation logic to make
// an additional check before submitting the data.
// Submit data to server.
}
</fx:Script>
<fx:Declarations>
<!-- Define the data model. -->
<fx:Model id="formInfo">
<formData>
<date>
<month>{monthInput.text}</month>
<day>{dayInput.text}</day>
<year>{yearInput.text}</year>
</date>
<name>
<firstName>{fNameInput.text}</firstName>
<lastName>{lNameInput.text}</lastName>
</name>
<phoneNum>{phoneInput.text}</phoneNum>
</formData>
</fx:Model>
<!-- Define the validators. -->
<mx:StringValidator id="fNameV" required="true"
source="{fNameInput}" property="text" />
<mx:StringValidator id="lNameV" required="true"
source="{lNameInput}" property="text" />
<mx:PhoneNumberValidator id="pnV" source="{phoneInput}"
property="text" />
<!-- Invoke the DataValidator programmatically. -->
<mx:DateValidator id="dayV" triggerEvent=""
daySource="{dayInput}" dayProperty="text" monthSource="{monthInput}"
monthProperty="text" yearSource="{yearInput}" yearProperty="text" />
</fx:Declarations>
<!-- Define the form to populate the model. -->
<mx:Form>
<mx:FormItem label="Month">
<s:TextInput id="monthInput" />
</mx:FormItem>
<mx:FormItem label="Day">
<s:TextInput id="dayInput" />
</mx:FormItem>
<mx:FormItem label="Year">
<s:TextInput id="yearInput" />
</mx:FormItem>
<mx:FormItem label="First name">
<s:TextInput id="fNameInput" />
</mx:FormItem>
<mx:FormItem label="Last name">
<s:TextInput id="lNameInput" />
</mx:FormItem>
<mx:FormItem label="Phone">
<s:TextInput id="phoneInput" />
</mx:FormItem>
</mx:Form>
<!-- Define the button to trigger validation. -->
<s:Button label="Submit" click="validateAndSubmit();" />
</s:Application>
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