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POSimplify AS3 binding/event-dispatching code
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copied!<p>There are 3 properties (example 1):</p> <pre><code>[Bindable] public var name:String; [Bindable] public var email:Number; [Bindable] public var address:Boolean; </code></pre> <p>I needed to have 3 helper methods that will be bindable too (example 2):</p> <pre><code>[Bindable] public var name:String; [Bindable] public var email:Number; [Bindable] public var address:Boolean; public function get nameIsOk():Boolean { return !Strings.isEmpty(name) } public function get emailIsOk():Boolean { return email == 3 } public function get addressIsOk():Boolean { return address } </code></pre> <p>Sure, the code above doesn't work. I made it work by doing this (example 3):</p> <pre><code>private var _name:String [Bindable("nameChanged")] public function get name():String { return _name } public function set name(v:String):void { _name = v; dispatchEvent(new Event("nameChanged")) } [Bindable("nameChanged")] public function get nameIsOk():Boolean { return !Strings.isEmpty(name) } private var _email:Number [Bindable("emailChanged")] public function get email():Number { return _email } public function set email(v:Number):void { _email = v; dispatchEvent(new Event("emailChanged")) } [Bindable("emailChanged")] public function get emailIsOk():Boolean { return email == 3 } private var _address:Boolean [Bindable("addressChanged")] public function get address():Boolean { return _address } public function set address(v:Boolean):void { _address = v; dispatchEvent(new Event("addressChanged")) } [Bindable("addressChanged")] public function get addressIsOk():Boolean { return address } </code></pre> <p>It does work, but now it is bloated.</p> <p>Is there a way to reduce this code (example 3) to something smaller (like example 2)?</p> <p><strong>UPDATE:</strong> Kudos to just_a_dude for nice answer. Here is the final version:</p> <pre><code>[Bindable] public var name:String; [Bindable] public var email:Number; [Bindable] public var address:Boolean; public function Remixer() { for each (var f:String in Strings.split("name email address")) { ChangeWatcher.watch(this, f, onChange) } } private function onChange(e:PropertyChangeEvent):void { dispatchEvent(new Event(e.property + "Changed")) } [Bindable("nameChanged")] public function get nameIsOk():Boolean { return !Strings.isEmpty(name) } [Bindable("emailChanged")] public function get emailIsOk():Boolean { return email == 3 } [Bindable("addressChanged")] public function get addressIsOk():Boolean { return address } </code></pre>

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