I am about to check in a change that removes DeclareEvent and
DeclareEvents. These were private functions, so no API change review
is needed. I am removing these to support my fix for LPP-4997, but
also because these functions were dynamically adding attributes to a
class at run time, which impacts performance in JS2. If you are
working in the LFC or writing a class in <script> you will no longer
say:
class ... {
...
DeclareEvent(prototype, 'onSomething');
...
}
Instead you should simply declare the event property like any other
instance variable, but give it a proper initial value:
class ... {
...
var onSomething = LzDeclaredEvent;
...
}
Eventually, we will want to give these proper type declarations (as
soon as Don gives us the go-ahead). Events are a non-nullable type.
Perhaps we should change the way you specify a null event though?
Something like:
class ... {
...
var onSomething:LzEvent = LzEvent.nullEvent;
...
}
Thoughts?
---
Note: There are no changes to the usage of LZX <event> tag. The
compiler will automatically translate the <event> tag to the new JS
format.
