[Laszlo-dev] Event handlers, this and parent

[Raju Bitter]

Have a look at this code:

<canvas width="100%" height="600" debug="true">

  <class name="test1" extends="view">
  </class>

  <test1 x="100" y="100" width="100" height="100" bgcolor="#ff0000">
    <handler name="onclick" args="p">
      Debug.write(this);
      Debug.write(parent);
    </handler>

    <handler name="onclick" reference="b1" args="p">
      Debug.info("Event received by " + p);
      Debug.write(this);
      Debug.write(parent);
    </handler>
  </test1>

  <button id="b1" text="Click me" />

</canvas>

When I click on the button, the onclick handler within test1 is called. But
"this" is an anonymous class extending test1. That's not very logical, is
it? I can imagine there was a good reason that you have to generate a
separate sprite object here, but it's very hard for programmers to
understand the underlying object structure. Is that the new way of dealing
with handlers?

Thanks,
Raju