Move rows in a JTable using a JSpinner - Java Swing

Java examples for Swing:JTable Row

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Description

Move rows in a JTable using a JSpinner

Demo Code


//package com.java2s;

import java.util.Map;
import javax.swing.JSpinner;
import javax.swing.JTable;
import javax.swing.SpinnerNumberModel;

import javax.swing.table.DefaultTableModel;

public class Main {
    /**/*from  w w w.j av a  2s .  c  o m*/
     * Save previous index of JSpinner for a certain JTable
     */
    private static Map<JTable, Integer> spinnerMovesTableMap;

    /**
     * Move rows in a JTable using a JSpinner
     *
     * @param selectedRow
     * @param table
     * @param spinner
     */
    public static void spinnerMovesTableRow(JTable table, JSpinner spinner,
            Integer selectedRow) {

        DefaultTableModel tableModel = null;
        SpinnerNumberModel spinnerModel = null;
        int value = -1;
        Integer previousValue = null;
        int row = -1;
        int newRow = -1;

        spinnerModel = (SpinnerNumberModel) spinner.getModel();
        value = Integer.valueOf("" + spinnerModel.getValue());
        previousValue = spinnerMovesTableMap.get(table);
        if (previousValue == null) {
            previousValue = 0;
        }

        tableModel = (DefaultTableModel) table.getModel();
        if (selectedRow == null) {
            row = table.getSelectedRow();
        } else {
            row = selectedRow;
        }

        newRow = row;

        // Move up
        if (previousValue < value) {

            // Calculate new row
            newRow = row - 1;
            if (newRow == -1) {
                newRow = table.getRowCount() - 1;
            }

        }
        // Move down
        else if (previousValue > value) {

            // Calculate new row
            newRow = row + 1;
            if (newRow == table.getRowCount()) {
                newRow = 0;
            }

        }

        // Move row in table
        tableModel.moveRow(row, row, newRow);
        // Select/highlight new row
        table.changeSelection(newRow, 0, false, false);

        // Save actual value as previous value
        spinnerMovesTableMap.put(table, new Integer(value));

    }

    /**
     *
     * @param table
     * @param spinner
     */
    public static void spinnerMovesTableRow(JTable table, JSpinner spinner) {
        spinnerMovesTableRow(table, spinner, null);
    }
}

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