RE: [flexcoders] Cairngorm Question.

[Ben Elmore]

Title: Message





That 
is 'keeping the interdepancy between my view files as few as 
possible'.

  
  -----Original Message-----From: Ben Elmore 
  [mailto:[EMAIL PROTECTED] Sent: Thursday, March 31, 2005 4:07 
  PMTo: flexcoders@yahoogroups.comSubject: RE: 
  [flexcoders] Cairngorm Question.
  Well. My thought is 'Who would know what child needed the work done?' 
  The view locator's need to have the view helper name be unique is so that it 
  can locate the view. A command has to be 100% sure what view to work with 
  to get the data to properly make the call out to the server. Therefore my 
  thought is that the safer bet would be to have the command talk to the parent 
  to either a) get the data or b) get the name of the child.
   
  Anyway, those are just my thoughts to why I would approach the 
  situation the way I outlined. My judgment of clean has a lot to do with the 
  ability to maintain the application and as much as possible keeping the 
  interdepancy between my view files as possible. Loose 
  coupling.
   
  Ben
   
   
  
  -----Original Message-----From: Omar 
  Ramos [mailto:[EMAIL PROTECTED] Sent: Thursday, March 31, 2005 3:18 
  PMTo: flexcoders@yahoogroups.comSubject: RE: 
  [flexcoders] Cairngorm Question.
  
    Yes I had tho of that idea ben. But was wondering what 
    was the clean way to do it. Thanks for the reply's so 
    far.
     
    Omar Ramos
    Itacon Corporation
    Technology Manager
    
    
    From: Ben Elmore [mailto:[EMAIL PROTECTED] 
    Sent: Thursday, March 31, 2005 2:17 PMTo: 
    flexcoders@yahoogroups.comSubject: RE: [flexcoders] Cairngorm 
    Question.
    
    The way Cairngorm current architects the ViewHelper is that 
    it requires each ViewHelper to register itself to the ViewLocator 
    under a unique name. Therefore if you are attaching the view 
    dynamically in a repeater and using the same value in the 'name' 
    attribute for the ViewHelpers then the ViewLoactor will throw an 
    error.
     
    One approach to your solution is to have the each of your views 
    bubble up its methods to the parent view that the repeater exists in. 
    
     
    For example (in code babble).
     
    MyMainView.mxml
     
    <mx:script>
        public activeChild : MovieClip = 
    null;
     
        function 
    parentHandleMethod(evt)
        {
            // store current child 
    view to local var
            activeChild = 
evt.target'
     
             // do server 
    call
     
        }
    </ms:script
    ....
    <mx:repeater>
        <me:mychildView 
     
    >
    </mx:repeater>
    ...
     
    MyChildView.mxml
     
    <mx:Metadata>
        [Event("onCustomEvent1")]
        
    [Event("onCustomEvent2")]
    </mx:Metadata>
     
     
    <mx:Button click="this.dispatchEvent({type='onCustomEvent1', 
    otherAttributes=''})">
     
     
    In 
    this example instead of having the child view handle the logic itself 
    (communicating to the server) it tells the parent too. Or more correctly 
    says 'someone please do this for me' the parent will know which of the child 
    views to get the data from since the dispatch event automatically keeps 
    track of the target in which the event was dispatch 
from.
     
    This is just a suggestion. There are other options out there, perhaps 
    better or more correct then this approach.
     
    Ben
     
     
    
    -----Original Message-----From: 
    Omar Ramos [mailto:[EMAIL PROTECTED] Sent: Thursday, March 31, 
    2005 12:53 PMTo: flexcoders@yahoogroups.comSubject: 
    RE: [flexcoders] Cairngorm Question.
    
      Anyone?
       
      Omar Ramos
      Itacon Corporation
      Technology Manager
      
      
      From: Omar Ramos [mailto:[EMAIL PROTECTED] 
      Sent: Wednesday, March 30, 2005 8:18 PMTo: 
      flexcoders@yahoogroups.comSubject: [flexcoders] Cairngorm 
      Question.
      
      Hi 
      all,
       
      I am using the 
      Cairngorm plataform but had a small question. How can I use the viewhelper 
      technique when I attach view dynamicaly? For example I have a mxml 
      component and put a view helper attached to it and use this component on a 
      repeater and 5 instances are made. When I call the getViewHelper method 
      which of those 5 reference will it give me? Any help would be 
      apreaciated.
       
       
       
      Omar 
      Ramos
      Itacon 
      Corporation
      Technology 
      Manager







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