Moin Sebastian,
Let's go back to the apply method:
What would be the cost of allowing the modification of the apply
attribute of properties?
This was my problem which lead to this thread.
Within a derived widget I wanted to override the apply method of the
superclass. It turned out that there was no apply method defined.
One solution would be to allow to refine "not yet defined" attributes of
a property. This would be the event and apply attribute.
Would this be possible?
Sebastian Werner schrieb:
Ok, there are multiple reasons. One major argument is that type changes
would allow to switch types completely e.g. from check=String to
check=Number for example. Most people would tend to say that this is a
bad software design.
Another, more technical reason, is that all other changes than init
values require a separate setter/getter(...) pair which means that we
need to migrate the property defitition of the parent with the
overridden settings in the derived class. For example when you change
the "check", but want to keep the "nullable" and "init" values. You also
need a far more complex check if the this class needs an own
setter/getter pair. And there is also an overhead because you need to
generate more functions.
I think we would life the best to keep it with the current
implementation and the existing restrictions.
Sebastian
Dietrich Streifert schrieb:
Hi Fabian,
well the limitation is simple to change in Class.js, line 1188:
if (key !== "init" && key !== "refine") {
just remove the key !== "init" check ;-)
Fabian Jakobs schrieb:
As far as I understand the new properties it is a limitation of the
implementation, which prevents us from supporting this. I think
Sebastian can tell you more about this but he won't be in office till
Monday.
Best Fabian
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