JavaFX如何添加ChangeListener来自动滚动TableView

Question

I have a TableView:

@FXML
    private TableView<ThreadInfo> threadsTable;

Class ThreadInfo:

public class ThreadInfo {

    private StringProperty threadFrom;

    private StringProperty threadDate;

    private StringProperty threadStatus;

    private StringProperty threadTo;

// getters, setters

}

I'm trying to add ChangeListener to auto scroll TableView down every time new ThreadInfo object is addedd to my TableView. What I tried:

threadsTable.getItems().addListener(
                new ListChangeListener<ThreadInfo>() {
                    @Override
                    public void onChanged(
                            javafx.collections.ListChangeListener.Change<? extends ThreadInfo> arg0) {
                        threadsTable.scrollTo(threadsTable.getItems().size());
                    }

                });

It has no compilation errors, but doesn't work. I also tried with ChangeListener, but I get: The method addListener(ListChangeListener) in the type ObservableList is not applicable for the arguments (new ChangeListener(){}).

Answer 1

I've found my problem. Both methods do the job:

threadsTable.getItems().addListener(
                new ListChangeListener<ThreadInfo>() {
                    @Override
                    public void onChanged(
                            javafx.collections.ListChangeListener.Change<? extends ThreadInfo> arg0) {
                        threadsTable.scrollTo(threadsTable.getItems().size());
                    }

                });

And:

threadsTable.accessibleRoleProperty().addListener(
            new ChangeListener<Object>() {

                @Override
            public void changed(ObservableValue<? extends Object> arg0,
                    Object arg1, Object arg2) {
                threadsTable.scrollTo(threadsTable.getItems().size()-1);
            }
        });

The problem is that I'm putting about 1k or more entries to my TableView and it's laggy. On smaller lists it works perfectly.