javafx只读属性的双向绑定

Question

When I try to compile this application I get error about types not matching. This worker.valueProperty is read-only, so I think that this is the problem. How to bind this property?

public void bindToWorker(final Worker<ObservableList<FileForTableView>> worker)
    {
        // Bind Labels to the properties of the worker
        rightTableView.itemsProperty().bindBidirectional(worker.valueProperty());

    }

CopyFileTask task = new CopyFileTask(source, destination);
            bindToWorker(task);

CopyFileTask class

public class CopyFileTask extends Task<ObservableList<FileForTableView>> {

    private File source;
    private File destination;

    //constructors here

    // The task implementation
    @Override
    protected ObservableList<FileForTableView> call()
    {
        final ObservableList<FileForTableView> results = Controller.getDirectoryContent(destination);
        // Update the title
        this.updateTitle("Prime Number Finder Task");

        try {
            copyFile(source, destination);
            System.out.println("file copied");
            results.add(new FileForTableView(destination.getName(), destination.length(), destination.isDirectory()));
        } catch (IOException e) {
                e.printStackTrace();
        }
        return results;
    }
    private static void copyFile(File source, File destination) throws IOException {
        Files.copy(source.toPath(), destination.toPath());
    }
}

Answer 1

You need an intermediate property binded bidirectionally to your rightTableView.itemsProperty .

And change listener for worker.valueProperty where you apply worker result to that intermediate property.