[news.eclipse.platform] Re: The type org.eclipse.core.resources.IFile ca

[mcfaddin@xxxxxxxxxx (Scott McFaddin)]

Ed, Jan,

I have a similar problem with IFile -- except it happens at run time. I 
have a snippet of code in a menu action delegate that checks the current 
selection to see if it is a file, e.g.

	ISelection current_selection = null;

	public void selectionChanged(IAction action, ISelection selection) {
	  current_selection = selection;
	}

	public void run(IAction action) {
	  if( current_selection instanceof IStructuredSelection ) {
	    IStructuredSelection s = (IStructuredSelection) current_selection;
	    Object ob = s.getFirstElement();
 	    IFile ifile = null;
	    if( ob instanceof IFile ) ifile = (IFile) ob;

           .. code to open and read the file ..
           
           }


At runtime I get a NoClassDefFoundError thrown at the "instanceof IFile" 
evaluation. Doesnt seem to happen on the preceeding "instanceof 
IStructuredSelection" evaluation, however.

I have org.eclipse.core.resources in my plugin dependencies but it looks 
like the runtime can't get at the IFile class def. Do I need to force the 
loading of the org.eclipse.core.resources plugin? Any idea what I am 
missing? I'm not an eclipse expert so this is probably something really 
simple.

FYI I'm testing the plugin in my WID 6.0.1 environment.

Thanks!