[news.eclipse.platform.swt] Re: No common IList interface for List and C

[Tom Schindl <tom.schindl@xxxxxxxxxxxxxxx>]

You could use a Viewer ListViewer and ComboViewer inherit from the same 
base class (AbstractListViewer).

Tom

amonteith schrieb:
> I'm building a wee eclipse plugin, and am making a composite widget 
> (ClassMethodSelector) that, once a Class has been selected, uses either 
> a org.eclipse.swt.widgets.List or Combo to display a set of method names 
> to be selected (depending on if the user wants multiple or only single 
> selections, respectively).  So, when I go to add the method names to the 
> method list selector (List or Combo) I would have thought I could cast 
> to some common IList type interface and use the common 'add' method.
> i.e. I want to:
> <code>
> IList list;
> if (SINGLE) list = (IList)comboList;
> else if (MULTI) list = (IList)listList;
>
> for (IMethod method: type.getMethods()) {
>     if (method meets other criteria: e.g. it exists)         
> list.add(method.getElementName());
> }
> </code>
>
> They don't share any such interface.  Is there a particular reason for 
> this that I'm missing, or is this a valid thing to be requested?  (I'm 
> new here: first time poster.... I did do a search of the newsgroup 
> before posting and didn't find any other references to the problem).
>
> It just seems unnecessarily tedious to either rewrite the code for each 
> or have an extra conditional before adding each method name.


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Tom Schindl                                          JFace-Committer
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