Cairngorm Code

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:observer="com.adobe.cairngorm.observer.*">

    <mx:Script>
        <![CDATA[
            import com.adobe.cairngorm.observer.Person;

            [Bindable]
            private var person:Person = new Person();

            private function observe(parameter:String):void
            {
                trace("observe " + parameter);
                if (statusText)
                    statusText.text += "observe " + parameter + "\n";
            }

            private function observeWithoutParameter():void
            {
                trace("observeWithoutParameter");
                if (statusText)
                    statusText.text += "observeWithoutParameter" + "\n";
            }

            private function observeValue():void
            {
                trace("observeValue");
                statusText.text += "observeValue" + "\n";
            }

            private function observeValueWithParameter(parameter:String):void
            {
                trace("observeValueWithParameter " + parameter);
                if (statusText)
                    statusText.text += "observeValueWithParameter " + parameter + "\n";
            }

            private function eventListener(event:Event):void
            {
                trace("eventListener " + event.type);
                statusText.text += "eventListener " + event.type + "\n";
            }

            private function eventListenerWithoutParameter():void
            {
                trace("eventListenerWithoutParameter");
                statusText.text += "eventListenerWithoutParameter" + "\n";
            }
        ]]>
    </mx:Script>

    <observer:Observe source="{ person.firstName }" handler="observe" />
    <observer:Observe 
        source="{ person.firstName }"
        handler="observeWithoutParameter"
        sendArgumentsToHandler="false" />
    <observer:ObserveValue 
        source="{ person.lastName }" value="{ 'bar' }"
        handler="observeValue" />
    <observer:ObserveValue 
        source="{ person.lastName }" value="{ 'bar' }"
        handler="observeValueWithParameter"
        sendArgumentsToHandler="true" />
    <observer:EventListener 
        source="{ person }"
        type="{ Person.UPDATE_EVENT }"
        handler="eventListener" />
    <observer:EventListener 
        source="{ person }"
        type="{ Person.UPDATE_EVENT }"
        handler="eventListenerWithoutParameter"
        sendArgumentsToHandler="false" />

    <mx:HBox>
        <mx:VBox>
            <mx:Button label="observe change to foo" click="person.firstName = 'foo'" />
            <mx:Button label="observe change to bar" click="person.firstName = 'bar'" />
            <mx:Button label="observeValue change to foo" click="person.lastName = 'foo'" />
            <mx:Button label="observeValue change to bar" click="person.lastName = 'bar'" />
            <mx:Button label="dispatchUpdateEvent" click="person.dispatchUpdateEvent()" />
        </mx:VBox>
        <mx:TextArea id="statusText"
            width="400" height="600" />
    </mx:HBox>
</mx:Application>