Re: [FlexJS] How Binding works?

[Alex Harui]

On 12/9/16, 12:02 PM, "carlos.rov...@gmail.com on behalf of Carlos Rovira"
<carlos.rov...@gmail.com on behalf of carlos.rov...@codeoscopic.com> wrote:

>Hi Alex, I think I don't need to dispatch a "dataChange" event, I only
>want
>to ease writing.

If you use [Bindable("dataChange")] the code must call dispatchEvent
itself.  The compiler does not generate any code for that.  If you just
use [Bindable] then the compiler will generate the dispatchEvent.

>
>I think this should work:
>
>            [Bindable]
>            public function get product():ProductVO
>            {
>                return data as ProductVO;
>            }

As written above it can't work because there is no setter to call
dispatchEvent.

IMO, the best you can do is:

  [Bindable("dataChange")]
  public function get product():ProductVO
  {
    return data as ProductVO;
  }

By not overriding the data setter, when the data is set, a dataChange will
fire and the binding subsystem will think product changed as well.  It
might not work today.  I will try it out and get it to work.


Thanks,
-Alex