Bug 19278 jar source attachment: jar icon not refreshed [package explorer] [browsing]
F2 .a jar with no source attached .attach source the icon is still suggesting that no source is attached
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingContentProvider.java
return concatenate(list.toArray(), project.getNonJavaResources());
	}
	
	/* (non-Javadoc)
	 * Method declared on IContentProvider.
	 */
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		super.inputChanged(viewer, oldInput, newInput);
		if (newInput instanceof Collection) {
			
			Collection col= (Collection)newInput;
			if (!col.isEmpty())
				newInput= col.iterator().next();
			else
				newInput= null;
		}
		fInput= newInput;
	}
	
	/* (non-Javadoc)
	 * Method declared on IContentProvider.
	 */
	public void dispose() {
		super.dispose();
		JavaCore.removeElementChangedListener(this);
	}
	
	/* (non-Javadoc)
	 * Method declared on IElementChangedListener.
	 */