How to Synchronize a JTable with a Back-End NavigableMap Data Structure During User Editing?

JTable Synchronization with Back-End Data-Structure

In the provided data-structure, the ranges are represented as NavigableMaps, and each range contains a NavigableMap of values and their corresponding Boolean values. The question arises whether to maintain synchronization between the data-structure and the JTable during user editing.

Synchronization Approach

It is recommended to recreate the data-structure once the user completes editing the JTable. This approach ensures that the data-structure is updated only after all changes have been made and validated.

Custom Editor for Data Validation

To handle data validation, consider creating a custom editor that displays a popup dialog with two separate text fields for each value in the range. This allows users to edit each value as a double within the specified range. Before saving the edited value to the model, it is formatted as a string using a custom function that ensures compliance with the range.

Example of Custom Editor

Below is an example of a custom editor using a popup dialog:

public class TablePopupEditor extends DefaultCellEditor {
    private PopupDialog popup;
    private String currentText = "";
    private JButton editorComponent;

    // ... (continued from above)

    public static void main(String[] args) {
        // ... (creating table and popup editor)

        JFrame frame = new JFrame("Popup Editor Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(scrollPane);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

class PopupDialog extends JDialog implements ActionListener {
    // ... (continued from above)
}

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