Michael Ochs wrote:
> Hi,
>
> I have a super class and its child class. In the child class I call:
>
> this._addCommunicationIDToDropList(this.__lastCommunicationIDForArea);
>
> where _addCommunicationIDToDropList(id) is a function of the superclass.
>
> This fails with the error "TypeError:
> this._addCommunicationIDToDropList is not a function"
>
> What am I doing wrong? Do I have to call non-overwritten methods with
> another context than this?
>
Maybe you need to have this method in the child class also and then
inside that child class method, call the superclass method like this
http://qooxdoo.org/documentation/0.8/oo_feature_summary?s=singleton#calling_the_overridden_superclass_method:
> qx.Class.define("my.cool.Class",
> {
> extend : my.great.SuperClass,
> ...
> members : {
> foo : function(x) {
> this.base(arguments, x);
> }
> }
> });
Of course, I'm not sure if this technique is really needed and also
whether you can or cannot call superclass methods on an instance of
child class. My C++, Java skills tell that this should be possible, but
qooxdoo might do it differently.
cheers,
skar.
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