Dispatch Bindable event : Bindable Event « Data Model « Flex

1. Flex
2. Data Model
3. Bindable Event

Dispatch Bindable event

           



<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:s="library://ns.adobe.com/flex/spark">
        <mx:ArrayCollection id="fruitCollection">
            <mx:String>A</mx:String>
            <mx:String>B</mx:String>
            <mx:String>C</mx:String>
        </mx:ArrayCollection>
    
    <mx:Script>
        
            private var myStringValue:String;
            
            [Bindable(event="myStringValueChanged")]
            private function isOrangeChosen():Boolean
            {
                return myStringValue == "Orange";
            }
            
            public function get selectedFruit():String
            {
                return myStringValue;
            }
            public function set selectedFruit( value:String ):void
            {
                myStringValue = value;
                dispatchEvent( new Event( "myStringValueChanged" ) );
            }
      
    </mx:Script>
    
    
    <mx:Label text="Select a Fruit:" />
    <s:HGroup>
        <s:DropDownList id="fruitCB" dataProvider="{fruitCollection}" change="{selectedFruit = fruitCB.selectedItem}"/>
        <mx:Button label="eat the orange." enabled="{isOrangeChosen()}"/>
    </s:HGroup>
    
</mx:Application>

   
    
    
    
    
    
    
    
    
    
    
  

Related examples in the same category

1.	Bindable event
2.	Fire bindable event during value setting
3.	Use [Bindable] metadata tag to specify to Flex to invoke the isEnabled()function in response to the event myFlagChanged.
4.	Bindable event and property