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<body><pre><span class="MXMLProcessing_Instruction">&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:Application</span><span class="MXMLDefault_Text"> xmlns:mx=&quot;</span><span class="MXMLString">http://www.adobe.com/2006/mxml</span><span class="MXMLDefault_Text">&quot; layout=&quot;</span><span class="MXMLString">vertical</span><span class="MXMLDefault_Text">&quot; verticalAlign=&quot;</span><span class="MXMLString">top</span><span class="MXMLDefault_Text">&quot;
horizontalAlign=&quot;</span><span class="MXMLString">center</span><span class="MXMLDefault_Text">&quot; backgroundGradientColors=&quot;</span><span class="MXMLString">[0x000000,0x323232]</span><span class="MXMLDefault_Text">&quot; paddingTop=&quot;</span><span class="MXMLString">0</span><span class="MXMLDefault_Text">&quot; viewSourceURL=&quot;</span><span class="MXMLString">srcview/index.html</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">&gt;</span>
<span class="MXMLSpecial_Tag">&lt;mx:Script&gt;</span>
<span class="ActionScriptOperator">&lt;!</span><span class="ActionScriptBracket/Brace">[</span><span class="ActionScriptDefault_Text">CDATA</span><span class="ActionScriptBracket/Brace">[</span>
<span class="ActionScriptComment">// Import necessary classes.
</span> <span class="ActionScriptReserved">import</span> <span class="ActionScriptDefault_Text">mx</span>.<span class="ActionScriptDefault_Text">controls</span>.<span class="ActionScriptDefault_Text">Alert</span>;
<span class="ActionScriptReserved">import</span> <span class="ActionScriptDefault_Text">mx</span>.<span class="ActionScriptDefault_Text">events</span>.<span class="ActionScriptDefault_Text">ValidationResultEvent</span>;
<span class="ActionScriptComment">// Event listener for the valid and invalid events.
</span> <span class="ActionScriptReserved">private</span> <span class="ActionScriptfunction">function</span> <span class="ActionScriptDefault_Text">handleValid</span><span class="ActionScriptBracket/Brace">(</span><span class="ActionScriptDefault_Text">eventObj</span><span class="ActionScriptOperator">:</span><span class="ActionScriptDefault_Text">ValidationResultEvent</span><span class="ActionScriptBracket/Brace">)</span><span class="ActionScriptOperator">:</span><span class="ActionScriptReserved">void</span> <span class="ActionScriptBracket/Brace">{</span>
<span class="ActionScriptReserved">if</span><span class="ActionScriptBracket/Brace">(</span><span class="ActionScriptDefault_Text">eventObj</span>.<span class="ActionScriptDefault_Text">type</span><span class="ActionScriptOperator">==</span><span class="ActionScriptDefault_Text">ValidationResultEvent</span>.<span class="ActionScriptDefault_Text">VALID</span><span class="ActionScriptBracket/Brace">)</span>
<span class="ActionScriptComment">// Enable Submit button.
</span> <span class="ActionScriptDefault_Text">submitButton</span>.<span class="ActionScriptDefault_Text">enabled</span> <span class="ActionScriptOperator">=</span> <span class="ActionScriptReserved">true</span>;
<span class="ActionScriptReserved">else</span>
<span class="ActionScriptDefault_Text">submitButton</span>.<span class="ActionScriptDefault_Text">enabled</span> <span class="ActionScriptOperator">=</span> <span class="ActionScriptReserved">false</span>;
<span class="ActionScriptBracket/Brace">}</span>
<span class="ActionScriptComment">// Submit form is everything is valid.
</span> <span class="ActionScriptReserved">private</span> <span class="ActionScriptfunction">function</span> <span class="ActionScriptDefault_Text">submitForm</span><span class="ActionScriptBracket/Brace">()</span><span class="ActionScriptOperator">:</span><span class="ActionScriptReserved">void</span> <span class="ActionScriptBracket/Brace">{</span>
<span class="ActionScriptDefault_Text">Alert</span>.<span class="ActionScriptDefault_Text">show</span><span class="ActionScriptBracket/Brace">(</span><span class="ActionScriptString">&quot;Form Submitted!&quot;</span><span class="ActionScriptBracket/Brace">)</span>;
<span class="ActionScriptBracket/Brace">}</span>
<span class="ActionScriptBracket/Brace">]]</span><span class="ActionScriptOperator">&gt;</span>
<span class="MXMLSpecial_Tag">&lt;/mx:Script&gt;</span>
<span class="MXMLComment">&lt;!--</span><span class="MXMLComment"> The Validator class defines the required property and the validator events
used by all validator subclasses. </span><span class="MXMLComment">--&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:Validator</span><span class="MXMLDefault_Text"> id=&quot;</span><span class="MXMLString">reqValid</span><span class="MXMLDefault_Text">&quot; required=&quot;</span><span class="MXMLString">true</span><span class="MXMLDefault_Text">&quot;
source=&quot;</span><span class="MXMLString">{</span><span class="ActionScriptDefault_Text">fname</span><span class="MXMLString">}</span><span class="MXMLDefault_Text">&quot; property=&quot;</span><span class="MXMLString">text</span><span class="MXMLDefault_Text">&quot;
valid=&quot;</span><span class="ActionScriptDefault_Text">handleValid</span><span class="ActionScriptBracket/Brace">(</span><span class="ActionScriptDefault_Text">event</span><span class="ActionScriptBracket/Brace">)</span><span class="MXMLDefault_Text">&quot; invalid=&quot;</span><span class="ActionScriptDefault_Text">handleValid</span><span class="ActionScriptBracket/Brace">(</span><span class="ActionScriptDefault_Text">event</span><span class="ActionScriptBracket/Brace">)</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">/&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:Panel</span><span class="MXMLDefault_Text"> title=&quot;</span><span class="MXMLString">Validator Example</span><span class="MXMLDefault_Text">&quot; layout=&quot;</span><span class="MXMLString">vertical</span><span class="MXMLDefault_Text">&quot; color=&quot;</span><span class="MXMLString">0xffffff</span><span class="MXMLDefault_Text">&quot; borderAlpha=&quot;</span><span class="MXMLString">0.15</span><span class="MXMLDefault_Text">&quot;
paddingTop=&quot;</span><span class="MXMLString">10</span><span class="MXMLDefault_Text">&quot; paddingRight=&quot;</span><span class="MXMLString">10</span><span class="MXMLDefault_Text">&quot; paddingBottom=&quot;</span><span class="MXMLString">10</span><span class="MXMLDefault_Text">&quot; paddingLeft=&quot;</span><span class="MXMLString">10</span><span class="MXMLDefault_Text">&quot; horizontalAlign=&quot;</span><span class="MXMLString">center</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:Form</span><span class="MXMLDefault_Text"> color=&quot;</span><span class="MXMLString">0x323232</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:Text</span><span class="MXMLDefault_Text"> width=&quot;</span><span class="MXMLString">100%</span><span class="MXMLDefault_Text">&quot;
text=&quot;</span><span class="MXMLString">Enter a value in the Name field before you can submit. The E-mail field is optional.</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">/&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:FormItem</span><span class="MXMLDefault_Text"> label=&quot;</span><span class="MXMLString">Name: </span><span class="MXMLDefault_Text">&quot; required=&quot;</span><span class="MXMLString">true</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:TextInput</span><span class="MXMLDefault_Text"> id=&quot;</span><span class="MXMLString">fname</span><span class="MXMLDefault_Text">&quot; width=&quot;</span><span class="MXMLString">100%</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">/&gt;</span>
<span class="MXMLComponent_Tag">&lt;/mx:FormItem&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:FormItem</span><span class="MXMLDefault_Text"> label=&quot;</span><span class="MXMLString">E-mail address: </span><span class="MXMLDefault_Text">&quot; required=&quot;</span><span class="MXMLString">false</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:TextInput</span><span class="MXMLDefault_Text"> id=&quot;</span><span class="MXMLString">email</span><span class="MXMLDefault_Text">&quot; width=&quot;</span><span class="MXMLString">100%</span><span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">/&gt;</span>
<span class="MXMLComponent_Tag">&lt;/mx:FormItem&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:FormItem&gt;</span>
<span class="MXMLComponent_Tag">&lt;mx:Button</span><span class="MXMLDefault_Text"> id=&quot;</span><span class="MXMLString">submitButton</span><span class="MXMLDefault_Text">&quot; enabled=&quot;</span><span class="MXMLString">false</span><span class="MXMLDefault_Text">&quot;
label=&quot;</span><span class="MXMLString">Submit</span><span class="MXMLDefault_Text">&quot; click=&quot;</span><span class="ActionScriptDefault_Text">submitForm</span><span class="ActionScriptBracket/Brace">()</span>;<span class="MXMLDefault_Text">&quot;</span><span class="MXMLComponent_Tag">/&gt;</span>
<span class="MXMLComponent_Tag">&lt;/mx:FormItem&gt;</span>
<span class="MXMLComponent_Tag">&lt;/mx:Form&gt;</span>
<span class="MXMLComponent_Tag">&lt;/mx:Panel&gt;</span>
<span class="MXMLComponent_Tag">&lt;/mx:Application&gt;</span></pre></body>
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