Hi Dmitri,
Thanks for replying. I ended up just making my polyline class the
controller for a real Polyline and it all works ok, just means there's
a little bit of special casing when i'm adding things to the view, but
it's no biggie.
>> PS#1: hide() and show() methods on Polylines return void, not Boolean.
>> getLength() must be declared with the default value of
>> LatLng.EARTH_RADUIS for its signature to be compatible.
That got my old code to compile - haven't had a chance to see if it
would have worked yet tho. Amusingly, with the 1.7 API, i get warnings
saying those methods have been deprecated; however if i remove them
then the code doesn't compile at all :).
Cheers,
Chris
On Oct 3, 4:45 pm, "Dmitri (Google)" <[EMAIL PROTECTED]> wrote:
> Hi, TinyGrasshopper,
>
> We have a bug filed for the inability to extend a Polyline created
> using the fromEncoded method and we will take a look at it.
>
> For now, maybe you could consider creating a Dictionary
> (flash.utils.Dictionary) object to match the instances of your
> Polylines to separate instances of classes containing the extended
> data fields you want to attach to these polylines.
> This is a less efficient way of going about it than extending the
> class and adding your extra fields, but this may work nonetheless.
> It may also be a lot easier to do than implementing your own
> Polyline. :)
>
> Thanks.
>
> Dmitri.
>
> PS#0: As for wrappable stuff, we are keeping that stuff deliberately
> obscure.
> Developers interested in implementing their own overlays (such as
> Polylines) may want to start with the OverlayBase class.
> It provides the very basic skeleton for an overlay and also contains
> the implementation for the wrappables (so you won't have to care about
> them).
> In general, we discourage people from implementing interfaces from
> scratch (specifically because of the wrappables problem) and try to
> provide base classes instead.
>
> PS#1: hide() and show() methods on Polylines return void, not Boolean.
> getLength() must be declared with the default value of
> LatLng.EARTH_RADUIS for its signature to be compatible.
>
> On Oct 3, 10:14 am, TinyGrasshopper <[EMAIL PROTECTED]> wrote:
>
> > Hi everyone,
>
> > In the application I'm working on, there is a need to have some extra
> > fields on a polyline. Since there's not yet a way to add extra info to
> > the base Polyline class, I first thought to do this by extending the
> > Polyline class with my own class, however then I ran into the issue of
> > not being able to subclass the results of fromEncoded.
>
> > So my next attempt was to wrap a polyline object in another object
> > which looks like a Polyline but really just hands everything over to
> > the polyline it contains. My current problem is that I've come across
> > some functions that I need to implement but which aren't documented in
> > the API spec (or appear to be wrong). There seems to be issues with
> > the following four methods:
>
> > - IPolyline.hide()
> > I presume this is something like:
>
> > public function hide():Boolean;
>
> > but that doesn't seem to work.
>
> > - IPolyline.isHidden()
> > I got this to work with this declaration:
>
> > public function isHidden():Boolean;
>
> > - IPolyline.show()
> > Again, I presume it's something like:
>
> > public function show():Boolean;
>
> > but that doesn't work
>
> > - IPolyline.getLength()
> > This seems to be documented incorrectly, the documentation says it
> > should be:
>
> > public function getLength(opt_radius:Number):Number;
>
> > but that doesn't work.
>
> > Note that when i say "doesn't work" i mean that I get compile errors
> > like:
>
> > ...\EntityPolyline.as(35): col: 15 Error: Interface method getLength
> > in namespace com.google.maps.interfaces:IPolyline is implemented with
> > an incompatible signature in class ...:EntityPolyline.
>
> > public class EntityPolyline extends EventDispatcher implements
> > IEntityGraphic, IOverlay, IPolyline, IWrappable,
> > IWrappableEventDispatcher {
>
> > Does anyone know what the correct prototypes for these methods are?
>
> > Hehe also, can anyone tell me what IWrappable and
> > IWrappableEventDispatcher are about? I dont really understand what the
> > documentation means by "cross-domain event dispatching functionality".
>
> > Pretty sure my wrapper's not going to work :) but oh well - thought
> > i'd at least give it a go before giving up on the whole idea and
> > changing my code to have a controller that sits beside a real
> > polyline.
>
> > Cheers,
> > Chris
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