RE: [Dynapi-Dev] Widget method extending

[Pascal B. <pa...@dy...>]

I've been doing it like this:

myWidget.prototype._myWidgetSetSize=DynLayer.prototype.setSize
myWidget.prototype.setSize=function(w,h) {
	// do your own code here
      this._myWidgetSetSize(w,h)
}



Pascal Bestebroer
pa...@dy...
http://www.dynamic-core.net 

> -----Oorspronkelijk bericht-----
> Van: dyn...@li...
> [mailto:dyn...@li...]Namens Barre Bizon
> Verzonden: vrijdag 24 november 2000 17:32
> Aan: dyn...@li...
> Onderwerp: [Dynapi-Dev] Widget method extending
> 
> 
> Another thing... 
> Is there a way of extending methods?
> Have been struggling with this a couple of hours now... and 
> I can't get past the fact that when you create a widget 
> that "extends" DynLayer and you want it to extend various 
> methods,it seems that you have to rewrite the methods in 
> full. 
> There should be a better way of doing this also. 
> 
> /Bart
> 
> 
> > hmm seems kindof obscure..
> > It strikes me as having a construct method to be a 
> cleaner 
> > way of doing initialization.. almost like calling super() 
> > in Java... hm?
> > (The code below should work)
> > 
> > function DynLayer() { this.construct(arguments) }
> > DynLayer.prototype.construct=function(){
> > 	var a=arguments[0]
> > ........etc.......
> > 
> > function widget(){
> >    this.construct(arguments)
> > }
> > widget.prototype=new DynLayer
> > 
> > 
> > > Forget what I wrote.... it should be this instead:
> > > 
> > > function widget(argarray) {
> > >    this.DynLayer = DynLayer
> > >    eval("this.DynLayer("+argarray.join(",")+")")
> > > }
> > > widget.prototype = new DynLayer
> > > 
> > > /Lunna
> 
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