[Laszlo-dev] where does the flex compiler think "parent" is being bound in this event handler?

[keiji Ono]

May i come inside ?
Dose not this issue mean what will be able to compile lzx code with
mxmlc, dose this ?

ono

Henry Minsky wrote:

> Yeah, we're going to need to do that no matter what because we need
> setters to be able to call "super()"
>
>
> On Jan 9, 2008 11:23 PM, P T Withington < ptw at openlaszlo.org
> <mailto:ptw at openlaszlo.org>> wrote:
>
>     Well I thought our handlers were supposed to be compiled with
>     'implicit this'.
>
>     Perhaps Don left this out, because this _is_ implicit in AS3 method
>     bodies? If so, we should make the tag compiler output anonymous
>     handlers like this as methods not functions. This would mean we would
>     have to start emitting those anonymous singleton classes for views
>     that add methods...
>
>     On 2008-01-09, at 23:06 EST, Henry Minsky wrote:
>
>     > I've got a little test LZX code that has a click handler like this:
>     >
>     > <view id="bar" x="200" y="200" >
>     > <view id="foo" bgcolor="0xcccccc" x="-100" y="-100" height="200"
>     > width="200"
>     > onclick="parent.animate('rotation', 360, 1500, true)"
>     >>
>     >
>     > When I compile it I get this error from the flex compiler
>     >
>     > /cygdrive/c/flex2/bin/mxmlc -debug=true
>     > -library-path+=../../../lps/includes/lfc/LFC9.lzl -default-size 800
>     > 600
>     > -default-frame-rate 60 DemoApp.as
>     > Loading configuration file C:\flex2\frameworks\flex-config.xml
>     > C:\users\hqm\openlaszlo\devildog\WEB-INF\lps\lfc\DemoApp.as(49):
>     > col: 20
>     > Error: Call to a possibly undefined method animate through a
>     > reference with
>     > static type flash.display:DisplayObjectContainer.
>     >
>     > parent.animate('rotation', 360, 1500, true)
>     > ^
>     >
>     > The handler is compiled to a function inside of the usual stuff
>     > passed to a
>     > call to LzInstiateView:
>     >
>     >
>     > LzInstantiateView({attrs: {id: "bar",
>     > x: 200,
>     > y: 200},
>     > children: [{attrs:
>     > {$delegates: ["onclick", "$m1", null,
>     > "oninit", "$m2_foo_reference", null],
>     > $m1: function foo_$m1() {
>     > parent.animate('rotation', 360, 1500, true)
>     > }, ...
>     >
>     >
>     > So I am not sure in what context the compiler thinks that "parent"
>     > is being
>     > looked up.
>     >
>     >
>     > If I change the code to refer to "this.parent", it compiles
>     happily,
>     > and
>     > appears to work
>     >
>     > <view id="bar" x="200" y="200" >
>     > <view id="foo" bgcolor="0xcccccc" x="-100" y="-100" height="200"
>     > width="200"
>     > onclick="this.parent.animate('rotation', 360, 1500, true)"
>     >>
>     >
>     >
>     >
>     > --
>     > Henry Minsky
>     > Software Architect
>     > hminsky at laszlosystems.com <mailto:hminsky at laszlosystems.com>
>
>
>
>
> -- 
> Henry Minsky
> Software Architect
> hminsky at laszlosystems.com <mailto:hminsky at laszlosystems.com>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.openlaszlo.org/pipermail/laszlo-dev/attachments/20080109/0c89436e/attachment.html