public String goBack()
    {    
    	//new Exception().printStackTrace(System.err);
      final WebHistory history=webEngine.getHistory();
      ObservableList<WebHistory.Entry> entryList=history.getEntries();
      int currentIndex=history.getCurrentIndex();
//      Out("currentIndex = "+currentIndex);
//      Out(entryList.toString().replace("],","]\n"));

      Platform.runLater(() ->{
    	  try{
    		  history.go(-1);
    	  }catch(Exception e){
    		 // e.printStackTrace();
    	  }
      });
      return entryList.get(currentIndex>0?currentIndex-1:currentIndex).getUrl();
    }
 

public String goForward()
    {    
      final WebHistory history=webEngine.getHistory();
      ObservableList<WebHistory.Entry> entryList=history.getEntries();
      int currentIndex=history.getCurrentIndex();
//      Out("currentIndex = "+currentIndex);
//      Out(entryList.toString().replace("],","]\n"));
    
		Platform.runLater(() -> {
			try {
				history.go(1);
			} catch (IndexOutOfBoundsException ex) {
			}
		});
      return entryList.get(currentIndex<entryList.size()-1?currentIndex+1:currentIndex).getUrl();
    }
 

public HTMLView() {
    viewport = ToolBarContainer.createDefaultContainer(Orientation.RIGHT);
    webView = new WebView();
    viewport.setContent(webView);
    VLToolBar bar = new VLToolBar();
    Button openInBrowser = FXUIUtils.createButton("open-in-browser", "Open in External Browser", true);
    Button prevPage = FXUIUtils.createButton("prev", "Previous Page", false);
    WebHistory history = webView.getEngine().getHistory();
    prevPage.setOnAction((event) -> {
        history.go(-1);
    });
    bar.add(prevPage);
    Button nextPage = FXUIUtils.createButton("next", "Next Page", false);
    nextPage.setOnAction((event) -> {
        history.go(1);
    });
    bar.add(nextPage);
    openInBrowser.setOnAction((event) -> {
        try {
            URI uri = ProjectHTTPDServer.getURI(fileHandler.getCurrentFile().toPath());
            if (uri != null)
                Desktop.getDesktop().browse(uri);
            else
                Desktop.getDesktop().open(fileHandler.getCurrentFile());
        } catch (IOException e) {
            e.printStackTrace();
        }
    });
    bar.add(openInBrowser);
    history.currentIndexProperty().addListener((ob, o, n) -> {
        nextPage.setDisable(n.intValue() == history.getEntries().size() - 1);
        prevPage.setDisable(n.intValue() == 0);
    });
    viewport.getToolBarPanel().add(bar);
}
 

public String getCurrentURL() {
  //history = engine.getHistory();
  ObservableList<WebHistory.Entry> entryList = history.getEntries();
  int currentIndex = history.getCurrentIndex();
  String txt = null;
  if (currentIndex >=0 ) {
  	txt = entryList.get(currentIndex).getUrl();
  }
  return txt;
}