Deleting a file(s) through FileChooser?

Question

I have a JavaFX app using JRE1.8.0 u40. I converted my Swing JFileChooser Open and Save to the newer JavaFX FileChooser Open and Save, Windows7 style Dialog box. But I have not found an equivalent JavaFX FileChooser method to replace the JFileChooser method I'm using for deleting a file(s) as shown below:

public static void deleteFile() throws IOException {

    JFileChooser fileDialog = new JFileChooser("C:\\ProgramData\\L1 Art Files\\");
    File[] selectedFiles;
    fileDialog.setSelectedFiles(null);
    // Set frame properties
    fileDialog.setDialogTitle("Delete Pixel Art File(s)");
    //fileDialog.setLayout(new FlowLayout());
    fileDialog.setSize(400, 400);
    fileDialog.setVisible(true);
    fileDialog.setMultiSelectionEnabled(true);  // Allow multiple selection
    fileDialog.setVisible(true);
    int option = fileDialog.showDialog(null, "Delete");
    if (option != JFileChooser.APPROVE_OPTION)
        return;                                 //user canceled the 
    selectedFiles = fileDialog.getSelectedFiles();
    if (selectedFiles != null) {         //ask the user to replace this file
        int response = JOptionPane.showConfirmDialog(null, "Are you sure want to delete this file?",
                "Confirm Delete",
                JOptionPane.YES_NO_OPTION,
                JOptionPane.WARNING_MESSAGE);
        if (response != JOptionPane.YES_OPTION) return; 
    }

    for (File f : selectedFiles) {
        Files.delete(f.toPath());
    }

Is there a similar solution to the above for JavaFX using FileChooser or do I use the showOpenDialog(null) with setTitle("Delete Pixel Art File")?

score 1 · Answer 1 · edited Nov 17 '15 at 12:24

You can easily perform that task using javafx like below :

@FXML
private void onDeleteAction(ActionEvent event) {
    FileChooser fileChooser = new FileChooser();
    fileChooser.setTitle("Your_title_here");
    List<File> selectedFiles = fileChooser.showOpenMultipleDialog(null);

    if (selectedFiles != null) {
        Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
        alert.setTitle("Confirmation Dialog");
        alert.setHeaderText("Warning !");
        alert.setContentText("Are you sure you want to delete these files ?");

        Optional<ButtonType> result = alert.showAndWait();
        if (result.get() == ButtonType.OK) {
            for (File selectedFile : selectedFiles) {
                selectedFile.delete();
            }

        }
    } else {
        System.out.println("Error Selection");
    }
}

Looks good, however printing `"Error Selection"` if `fileChooser.showOpenMultipleDialog(null);` returns `null` is not a good idea. `null` is returned, if the dialog is canceled. Since canceling the dialog is an option for the user and not an unexpected behaviour, it should definetly not be handled by printing a error message somewhere. — fabian, Nov 17 '15 at 12:34

score 0 · Accepted Answer · answered Dec 01 '15 at 17:57

0

The above code was very helpful and works best with the other suggestion of checking for null and adding throws IOException to the deleteFile() method.

answered Dec 01 '15 at 17:57

sgroen

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Deleting a file(s) through FileChooser?

2 Answers2