@synthesize controller = _controller;

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(newDocumentLoaded:) name:@"newDocumentLoaded" object:nil];

}

- (void)newDocumentLoaded:(NSNotification*) notification {

    NSString *lastUrl = [notification object];

    NSLog(@"Setze die letzte URL auf %@", lastUrl);

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

    [defaults setObject:lastUrl forKey:@"lastURL"];

    [defaults synchronize];

}

- (void)applicationWillFinishLaunching:(NSNotification *)notification {

    _window = [[[NSApplication sharedApplication] windows] objectAtIndex:0];

    _controller = (ViewController*) [_window contentViewController];

    BOOL status = [[_controller pdfViewer] loadUrl: url];

        [[_controller pdfViewer] speak:(NSMutableString*)@"Das Dokument konnte nicht geladen werden"];

        [[_controller pdfViewer] startSpeaking:nil];

    for (id filename in filenames) {

        [self application:sender openFile:filename];