this is how im doing it this is my MXMl component with the variable (userName) that i want to set when i instantiate this object from another XML and i have a helper method that does it and it return the reference to the caller
<?xml version="1.0" encoding="utf-8"?> <s:Group width="200" height="200" xmlns:fx="http://ns.adobe.com/mxml/2009"; xmlns:s="library://ns.adobe.com/flex/spark" xmlns:components="spark.components.*"> <fx:Script> <![CDATA[ [Bindable] private var userName:String; public function initilizeMe(value:String):MyTestComp{ this.userName = value; return this; } ]]> </fx:Script> <s:Label text="{userName}"/> </s:Group> and in AS side i can just create a Object and call the initilizeMe var myObj:MyTestComp = new MyTestComp().initilizeMe("User Name"); Thanks Sumudu On Fri, Sep 27, 2013 at 12:56 PM, Peter Ginneberge <[email protected]>wrote: > An often overlooked "feature" of MXML components (extending UIComponent) > is that they have a data property that can be used for pretty much anything. > > // where MyClass is MXML > var instance:MyClass = new MyClass(); > instance.data = {prop:"value"}; > > In MyClass you can either override the "data" getter/setter or listen for > the dataChange event and do what you need to do. > > The data property is also bindable, so you can have mxml children inside > MyClass bind to it. > > <mx:Label text="{data.prop}" /> > > One of the downsides of the data property is data typing (it's types as > Object) so you may have to do some type casting if needed. > > regards, > Peter > > ----- Original Message ----- From: "mark goldin" <[email protected]> > To: "users" <[email protected]> > Sent: Friday, September 27, 2013 3:01 AM > Subject: Re: Send parameter to mxml constructor > > > > That is not exactly what I have. Yes, I too have an mxml class based on >> another AS class. But I am creating an instance of my mxml class like >> this: >> var newMyClass:MyClass = new MyClass(); >> So, how can I pass a value for myProperty to newMyClass? My understanding >> as soon as var newMyClass:MyClass = new MyClass(); executes all children >> on >> newMyClass will be created but I need to have myProperty before that. >> >> >> On Thu, Sep 26, 2013 at 7:17 PM, Mark Kessler >> <[email protected]>**wrote: >> >> Let me make the example a little more neutral. >>> >>> >>> class being called. >>> >>> public class MyClass inherits UIComponent >>> { >>> /** >>> * Constructor. >>> */ >>> public function MyClass ():void >>> { >>> super(); >>> } >>> >>> //----------------------------**------------ >>> // My setup property >>> //----------------------------**------------ >>> protected _myProperty:Object; >>> >>> public function get myProperty():Object >>> { >>> return >>> } >>> >>> public function set myProperty(value:Object):void >>> { >>> if (_myProperty == value) >>> { >>> return; >>> } >>> >>> _myProperty = value; >>> >>> setupChildren(); >>> } >>> >>> protected function setupChildren():void >>> { >>> //using the _myProperty to setup the children and marking >>> anything as being ready and available... events n such. >>> } >>> } >>> >>> >>> mxml side >>> >>> <ns:MyClass myProperty="The property i'm passing to initialize" /> >>> >>> >>> >>> >>> -Mark >>> >>> >>> >>> On Thu, Sep 26, 2013 at 3:18 PM, mark goldin <[email protected]> >>> wrote: >>> >>> > Are you saying I have to involve the DI framework? >>> > >>> > >>> > On Thu, Sep 26, 2013 at 2:13 PM, Kessler CTR Mark J < >>> > [email protected]> wrote: >>> > >>> > > Setter Dependency Injection(mxml compatible) vs constructor >>> Dependency >>> > > Injection (AS compatible). >>> > > >>> > > -Mark >>> > > >>> > > -----Original Message----- >>> > > From: mark goldin [mailto:[email protected]] >>> > > Sent: Thursday, September 26, 2013 2:57 PM >>> > > To: users >>> > > Subject: Send parameter to mxml constructor >>> > > >>> > > I have an mxml class called Obj1. Somewhere in my code I do: >>> > > var _obj1 = new Obj1(); >>> > > >>> > > What I need is to provide some variable to Obj1 for its >>> initialization. A >>> > > reason for that is because Obj1 has children that need that variable >>> for >>> > > their initialization. >>> > > But because I cannot send a parameter to Obj1's constructor I dont >>> know >>> > how >>> > > to solve my problem. >>> > > Any idea? >>> > > >>> > > Thanks >>> > > >>> > >>> >>> >> >
