Bug 52801 "Press F2 for focus" does not work for spell-checking hovers
"Press F2 for focus" does not work for spell-checking hovers.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
*/
	protected void doSetInput(IEditorInput input) throws CoreException {
		super.doSetInput(input);
		if (fEncodingSupport != null)
			fEncodingSupport.reset();
		setOutlinePageInput(fOutlinePage, input);
	}
	
	/*
	 * @see IWorkbenchPart#dispose()
	 */
	public void dispose() {
		
		fMarkOccurrenceAnnotations= false;
		uninstallOccurrencesFinder();
		
		if (fActivationListener != null) {
			Shell shell= getEditorSite().getShell();
			if (shell != null && !shell.isDisposed())
				shell.removeShellListener(fActivationListener);
			fActivationListener= null;
		}
		
		if (isBrowserLikeLinks())
			disableBrowserLikeLinks();
			
		if (fEncodingSupport != null) {
			fEncodingSupport.dispose();
			fEncodingSupport= null;
		}