Java example source code file (ConnectDialog.java)

This example Java source code file (ConnectDialog.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, borderlayout, center, col_name, dimension, emptyborder, event, gui, jlabel, jpanel, jtable, jtextfield, localvirtualmachine, managedvmtablemodel, north, rectangle, south, string, swing, util

The ConnectDialog.java Java example source code

/*
 * Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.tools.jconsole;

import java.util.List;
import java.awt.*;
import java.awt.event.*;
import java.util.*;

import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.plaf.basic.BasicRadioButtonUI;
import javax.swing.table.*;



import static java.awt.BorderLayout.*;
import static javax.swing.ListSelectionModel.*;
import static sun.tools.jconsole.Utilities.*;

@SuppressWarnings("serial")
public class ConnectDialog extends InternalDialog
                implements DocumentListener, FocusListener,
                           ItemListener, ListSelectionListener, KeyListener {

    private static final int COL_NAME = 0;
    private static final int COL_PID  = 1;


    JConsole jConsole;
    JTextField userNameTF, passwordTF;
    JRadioButton localRadioButton, remoteRadioButton;
    JLabel localMessageLabel, remoteMessageLabel;
    JTextField remoteTF;
    JButton connectButton, cancelButton;
    JPanel radioButtonPanel;

    private Icon mastheadIcon =
        new MastheadIcon(Messages.CONNECT_DIALOG_MASTHEAD_TITLE);
    private Color hintTextColor, disabledTableCellColor;

    // The table of managed VM (local process)
    JTable vmTable;
    ManagedVmTableModel vmModel = null;

    JScrollPane localTableScrollPane = null;

    private Action connectAction, cancelAction;


    public ConnectDialog(JConsole jConsole) {
        super(jConsole, Messages.CONNECT_DIALOG_TITLE, true);

        this.jConsole = jConsole;
        setAccessibleDescription(this,
                                 Messages.CONNECT_DIALOG_ACCESSIBLE_DESCRIPTION);
        setDefaultCloseOperation(HIDE_ON_CLOSE);
        setResizable(false);
        Container cp = (JComponent)getContentPane();

        radioButtonPanel = new JPanel(new BorderLayout(0, 12));
        radioButtonPanel.setBorder(new EmptyBorder(6, 12, 12, 12));
        ButtonGroup radioButtonGroup = new ButtonGroup();
        JPanel bottomPanel = new JPanel(new BorderLayout());

        statusBar = new JLabel(" ", JLabel.CENTER);
        setAccessibleName(statusBar,
                          Messages.CONNECT_DIALOG_STATUS_BAR_ACCESSIBLE_NAME);

        Font normalLabelFont = statusBar.getFont();
        Font boldLabelFont = normalLabelFont.deriveFont(Font.BOLD);
        Font smallLabelFont = normalLabelFont.deriveFont(normalLabelFont.getSize2D() - 1);

        JLabel mastheadLabel = new JLabel(mastheadIcon);
        setAccessibleName(mastheadLabel,
                          Messages.CONNECT_DIALOG_MASTHEAD_ACCESSIBLE_NAME);

        cp.add(mastheadLabel, NORTH);
        cp.add(radioButtonPanel, CENTER);
        cp.add(bottomPanel, SOUTH);

        createActions();

        remoteTF = new JTextField();
        remoteTF.addActionListener(connectAction);
        remoteTF.getDocument().addDocumentListener(this);
        remoteTF.addFocusListener(this);
        remoteTF.setPreferredSize(remoteTF.getPreferredSize());
        setAccessibleName(remoteTF,
                          Messages.REMOTE_PROCESS_TEXT_FIELD_ACCESSIBLE_NAME);

        //
        // If the VM supports the local attach mechanism (is: Sun
        // implementation) then the Local Process panel is created.
        //
        if (JConsole.isLocalAttachAvailable()) {
            vmModel = new ManagedVmTableModel();
            vmTable = new LocalTabJTable(vmModel);
            vmTable.setSelectionMode(SINGLE_SELECTION);
            vmTable.setPreferredScrollableViewportSize(new Dimension(400, 250));
            vmTable.setColumnSelectionAllowed(false);
            vmTable.addFocusListener(this);
            vmTable.getSelectionModel().addListSelectionListener(this);

            TableColumnModel columnModel = vmTable.getColumnModel();

            TableColumn pidColumn = columnModel.getColumn(COL_PID);
            pidColumn.setMaxWidth(getLabelWidth("9999999"));
            pidColumn.setResizable(false);

            TableColumn cmdLineColumn = columnModel.getColumn(COL_NAME);
            cmdLineColumn.setResizable(false);

            localRadioButton = new JRadioButton(Messages.LOCAL_PROCESS_COLON);
            localRadioButton.setMnemonic(Resources.getMnemonicInt(Messages.LOCAL_PROCESS_COLON));
            localRadioButton.setFont(boldLabelFont);
            localRadioButton.addItemListener(this);
            radioButtonGroup.add(localRadioButton);

            JPanel localPanel = new JPanel(new BorderLayout());

            JPanel localTablePanel = new JPanel(new BorderLayout());

            radioButtonPanel.add(localPanel, NORTH);

            localPanel.add(localRadioButton, NORTH);
            localPanel.add(new Padder(localRadioButton), LINE_START);
            localPanel.add(localTablePanel, CENTER);

            localTableScrollPane = new JScrollPane(vmTable);

            localTablePanel.add(localTableScrollPane, NORTH);

            localMessageLabel = new JLabel(" ");
            localMessageLabel.setFont(smallLabelFont);
            localMessageLabel.setForeground(hintTextColor);
            localTablePanel.add(localMessageLabel, SOUTH);
        }

        remoteRadioButton = new JRadioButton(Messages.REMOTE_PROCESS_COLON);
        remoteRadioButton.setMnemonic(Resources.getMnemonicInt(Messages.REMOTE_PROCESS_COLON));
        remoteRadioButton.setFont(boldLabelFont);
        radioButtonGroup.add(remoteRadioButton);

        JPanel remotePanel = new JPanel(new BorderLayout());
        if (localRadioButton != null) {
            remotePanel.add(remoteRadioButton, NORTH);
            remotePanel.add(new Padder(remoteRadioButton), LINE_START);

            Action nextRadioButtonAction =
                new AbstractAction("nextRadioButton") {
                    public void actionPerformed(ActionEvent ev) {
                        JRadioButton rb =
                            (ev.getSource() == localRadioButton) ? remoteRadioButton
                                                                 : localRadioButton;
                        rb.doClick();
                        rb.requestFocus();
                    }
                };

            localRadioButton.getActionMap().put("nextRadioButton", nextRadioButtonAction);
            remoteRadioButton.getActionMap().put("nextRadioButton", nextRadioButtonAction);

            localRadioButton.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0),
                                               "nextRadioButton");
            remoteRadioButton.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0),
                                                "nextRadioButton");
        } else {
            JLabel remoteLabel = new JLabel(remoteRadioButton.getText());
            remoteLabel.setFont(boldLabelFont);
            remotePanel.add(remoteLabel, NORTH);
        }
        radioButtonPanel.add(remotePanel, SOUTH);

        JPanel remoteTFPanel = new JPanel(new BorderLayout());
        remotePanel.add(remoteTFPanel, CENTER);

        remoteTFPanel.add(remoteTF, NORTH);

        remoteMessageLabel = new JLabel("<html>" + Messages.REMOTE_TF_USAGE + "");
        remoteMessageLabel.setFont(smallLabelFont);
        remoteMessageLabel.setForeground(hintTextColor);
        remoteTFPanel.add(remoteMessageLabel, CENTER);

        JPanel userPwdPanel = new JPanel(new FlowLayout(FlowLayout.LEADING, 0, 0));
        userPwdPanel.setBorder(new EmptyBorder(12, 0, 0, 0)); // top padding

        int tfWidth = JConsole.IS_WIN ? 12 : 8;

        userNameTF = new JTextField(tfWidth);
        userNameTF.addActionListener(connectAction);
        userNameTF.getDocument().addDocumentListener(this);
        userNameTF.addFocusListener(this);
        setAccessibleName(userNameTF,
            Messages.USERNAME_ACCESSIBLE_NAME);
        LabeledComponent lc;
        lc = new LabeledComponent(Messages.USERNAME_COLON_,
                                  Resources.getMnemonicInt(Messages.USERNAME_COLON_),
                                  userNameTF);
        lc.label.setFont(boldLabelFont);
        userPwdPanel.add(lc);

        passwordTF = new JPasswordField(tfWidth);
        // Heights differ, so fix here
        passwordTF.setPreferredSize(userNameTF.getPreferredSize());
        passwordTF.addActionListener(connectAction);
        passwordTF.getDocument().addDocumentListener(this);
        passwordTF.addFocusListener(this);
        setAccessibleName(passwordTF,
            Messages.PASSWORD_ACCESSIBLE_NAME);

        lc = new LabeledComponent(Messages.PASSWORD_COLON_,
                                  Resources.getMnemonicInt(Messages.PASSWORD_COLON_),
                                  passwordTF);
        lc.setBorder(new EmptyBorder(0, 12, 0, 0)); // Left padding
        lc.label.setFont(boldLabelFont);
        userPwdPanel.add(lc);

        remoteTFPanel.add(userPwdPanel, SOUTH);

        String connectButtonToolTipText =
            Messages.CONNECT_DIALOG_CONNECT_BUTTON_TOOLTIP;
        connectButton = new JButton(connectAction);
        connectButton.setToolTipText(connectButtonToolTipText);

        cancelButton = new JButton(cancelAction);

        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING));
        buttonPanel.setBorder(new EmptyBorder(12, 12, 2, 12));
        if (JConsole.IS_GTK) {
            buttonPanel.add(cancelButton);
            buttonPanel.add(connectButton);
        } else {
            buttonPanel.add(connectButton);
            buttonPanel.add(cancelButton);
        }
        bottomPanel.add(buttonPanel, NORTH);

        bottomPanel.add(statusBar, SOUTH);

        updateButtonStates();
        Utilities.updateTransparency(this);
    }

    public void revalidate() {
        // Adjust some colors
        Color disabledForeground = UIManager.getColor("Label.disabledForeground");
        if (disabledForeground == null) {
            // fall back for Nimbus that doesn't support 'Label.disabledForeground'
            disabledForeground = UIManager.getColor("Label.disabledText");
        }
        hintTextColor =
            ensureContrast(disabledForeground,
                           UIManager.getColor("Panel.background"));
        disabledTableCellColor =
            ensureContrast(new Color(0x808080),
                           UIManager.getColor("Table.background"));

        if (remoteMessageLabel != null) {
            remoteMessageLabel.setForeground(hintTextColor);
            // Update html color setting
            String colorStr =
                String.format("%06x", hintTextColor.getRGB() & 0xFFFFFF);
            remoteMessageLabel.setText("<html>" +
                                       Messages.REMOTE_TF_USAGE);
        }
        if (localMessageLabel != null) {
            localMessageLabel.setForeground(hintTextColor);
            // Update html color setting
            valueChanged(null);
        }

        super.revalidate();
    }

    private void createActions() {
        connectAction = new AbstractAction(Messages.CONNECT) {
            /* init */ {
                putValue(Action.MNEMONIC_KEY, Resources.getMnemonicInt(Messages.CONNECT));
            }

            public void actionPerformed(ActionEvent ev) {
                if (!isEnabled() || !isVisible()) {
                    return;
                }
                setVisible(false);
                statusBar.setText("");

                if (remoteRadioButton.isSelected()) {
                    String txt = remoteTF.getText().trim();
                    String userName = userNameTF.getText().trim();
                    userName = userName.equals("") ? null : userName;
                    String password = passwordTF.getText();
                    password = password.equals("") ? null : password;
                    try {
                        if (txt.startsWith(JConsole.ROOT_URL)) {
                            String url = txt;
                            jConsole.addUrl(url, userName, password, false);
                            remoteTF.setText(JConsole.ROOT_URL);
                            return;
                        } else {
                            String host = remoteTF.getText().trim();
                            String port = "0";
                            int index = host.lastIndexOf(":");
                            if (index >= 0) {
                                port = host.substring(index + 1);
                                host = host.substring(0, index);
                            }
                            if (host.length() > 0 && port.length() > 0) {
                                int p = Integer.parseInt(port.trim());
                                jConsole.addHost(host, p, userName, password);
                                remoteTF.setText("");
                                userNameTF.setText("");
                                passwordTF.setText("");
                                return;
                            }
                        }
                    } catch (Exception ex) {
                        statusBar.setText(ex.toString());
                    }
                    setVisible(true);
                } else if (localRadioButton != null && localRadioButton.isSelected()) {
                    // Try to connect to selected VM. If a connection
                    // cannot be established for some reason (the process has
                    // terminated for example) then keep the dialog open showing
                    // the connect error.
                    //
                    int row = vmTable.getSelectedRow();
                    if (row >= 0) {
                        jConsole.addVmid(vmModel.vmAt(row));
                    }
                    refresh();
                }
            }
        };

        cancelAction = new AbstractAction(Messages.CANCEL) {
            public void actionPerformed(ActionEvent ev) {
                setVisible(false);
                statusBar.setText("");
            }
        };
    }


    // a label used solely for calculating the width
    private static JLabel tmpLabel = new JLabel();
    public static int getLabelWidth(String text) {
        tmpLabel.setText(text);
        return (int) tmpLabel.getPreferredSize().getWidth() + 1;
    }

    private class LocalTabJTable extends JTable {
        ManagedVmTableModel vmModel;
        Border rendererBorder = new EmptyBorder(0, 6, 0, 6);

        public LocalTabJTable(ManagedVmTableModel model) {
            super(model);
            this.vmModel = model;

            // Remove vertical lines, expect for GTK L&F.
            // (because GTK doesn't show header dividers)
            if (!JConsole.IS_GTK) {
                setShowVerticalLines(false);
                setIntercellSpacing(new Dimension(0, 1));
            }

            // Double-click handler
            addMouseListener(new MouseAdapter() {
                public void mouseClicked(MouseEvent evt) {
                    if (evt.getClickCount() == 2) {
                        connectButton.doClick();
                    }
                }
            });

            // Enter should call default action
            getActionMap().put("connect", connectAction);
            InputMap inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
            inputMap.put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "connect");
        }

        public String getToolTipText(MouseEvent e) {
            String tip = null;
            java.awt.Point p = e.getPoint();
            int rowIndex = rowAtPoint(p);
            int colIndex = columnAtPoint(p);
            int realColumnIndex = convertColumnIndexToModel(colIndex);

            if (realColumnIndex == COL_NAME) {
                LocalVirtualMachine vmd = vmModel.vmAt(rowIndex);
                tip = vmd.toString();
            }
            return tip;
        }

        public TableCellRenderer getCellRenderer(int row, int column) {
            return new DefaultTableCellRenderer() {
                public Component getTableCellRendererComponent(JTable table,
                                                               Object value,
                                                               boolean isSelected,
                                                               boolean hasFocus,
                                                               int row,
                                                               int column) {
                    Component comp =
                        super.getTableCellRendererComponent(table, value, isSelected,
                                                            hasFocus, row, column);

                    if (!isSelected) {
                        LocalVirtualMachine lvm = vmModel.vmAt(row);
                        if (!lvm.isManageable() && !lvm.isAttachable()) {
                            comp.setForeground(disabledTableCellColor);
                        }
                    }

                    if (comp instanceof JLabel) {
                        JLabel label = (JLabel)comp;
                        label.setBorder(rendererBorder);

                        if (value instanceof Integer) {
                            label.setHorizontalAlignment(JLabel.RIGHT);
                        }
                    }

                    return comp;
                }
            };
        }
    }

    public void setConnectionParameters(String url,
                                        String host,
                                        int port,
                                        String userName,
                                        String password,
                                        String msg) {
        if ((url != null && url.length() > 0) ||
            (host != null && host.length() > 0 && port > 0)) {

            remoteRadioButton.setSelected(true);
            if (url != null && url.length() > 0) {
                remoteTF.setText(url);
            } else {
                remoteTF.setText(host+":"+port);
            }
            userNameTF.setText((userName != null) ? userName : "");
            passwordTF.setText((password != null) ? password : "");

            statusBar.setText((msg != null) ? msg : "");
            if (getPreferredSize().width > getWidth()) {
                pack();
            }
            remoteTF.requestFocus();
            remoteTF.selectAll();
        }
    }


    public void itemStateChanged(ItemEvent ev) {
        if (!localRadioButton.isSelected()) {
            vmTable.getSelectionModel().clearSelection();
        }
        updateButtonStates();
    }

    private void updateButtonStates() {
        boolean connectEnabled = false;

        if (remoteRadioButton.isSelected()) {
            connectEnabled = JConsole.isValidRemoteString(remoteTF.getText());
        } else if (localRadioButton != null && localRadioButton.isSelected()) {
            int row = vmTable.getSelectedRow();
            if (row >= 0) {
                LocalVirtualMachine lvm = vmModel.vmAt(row);
                connectEnabled = (lvm.isManageable() || lvm.isAttachable());
            }
        }

        connectAction.setEnabled(connectEnabled);
    }

    public void insertUpdate(DocumentEvent e) {
        updateButtonStates();
    }

    public void removeUpdate(DocumentEvent e) {
        updateButtonStates();
    }

    public void changedUpdate(DocumentEvent e) {
        updateButtonStates();
    }

    public void focusGained(FocusEvent e) {
        Object source = e.getSource();
        Component opposite = e.getOppositeComponent();

        if (!e.isTemporary() &&
            source instanceof JTextField &&
            opposite instanceof JComponent &&
            SwingUtilities.getRootPane(opposite) == getRootPane()) {

            ((JTextField)source).selectAll();
        }

        if (source == remoteTF) {
            remoteRadioButton.setSelected(true);
        } else if (source == vmTable) {
            localRadioButton.setSelected(true);
            if (vmModel.getRowCount() == 1) {
                // if there's only one process then select the row
                vmTable.setRowSelectionInterval(0, 0);
            }
        }
        updateButtonStates();
    }

    public void focusLost(FocusEvent e) {
    }

    public void keyTyped(KeyEvent e) {
        char c = e.getKeyChar();
        if (c == KeyEvent.VK_ESCAPE) {
            setVisible(false);
        } else if (!(Character.isDigit(c) ||
                     c == KeyEvent.VK_BACK_SPACE ||
                     c == KeyEvent.VK_DELETE)) {
            getToolkit().beep();
            e.consume();
        }
    }

    public void setVisible(boolean b) {
        boolean wasVisible = isVisible();
        super.setVisible(b);
        if (b && !wasVisible) {
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    if (remoteRadioButton.isSelected()) {
                        remoteTF.requestFocus();
                        remoteTF.selectAll();
                    }
                }
            });
        }
    }

    public void keyPressed(KeyEvent e) {
    }

    public void keyReleased(KeyEvent e) {
    }


    // ListSelectionListener interface
    public void valueChanged(ListSelectionEvent e) {
        updateButtonStates();
        String labelText = " "; // Non-empty to reserve vertical space
        int row = vmTable.getSelectedRow();
        if (row >= 0) {
            LocalVirtualMachine lvm = vmModel.vmAt(row);
            if (!lvm.isManageable()) {
                if (lvm.isAttachable()) {
                    labelText = Messages.MANAGEMENT_WILL_BE_ENABLED;
                } else {
                    labelText = Messages.MANAGEMENT_NOT_ENABLED;
                }
            }
        }
        String colorStr =
            String.format("%06x", hintTextColor.getRGB() & 0xFFFFFF);
        localMessageLabel.setText("<html>" + labelText);
    }
    // ----


    // Refresh the list of managed VMs
    public void refresh() {
        if (vmModel != null) {
            // Remember selection
            LocalVirtualMachine selected = null;
            int row = vmTable.getSelectedRow();
            if (row >= 0) {
                selected = vmModel.vmAt(row);
            }

            vmModel.refresh();

            int selectRow = -1;
            int n = vmModel.getRowCount();
            if (selected != null) {
                for (int i = 0; i < n; i++) {
                    LocalVirtualMachine lvm = vmModel.vmAt(i);
                    if (selected.vmid() == lvm.vmid() &&
                        selected.toString().equals(lvm.toString())) {

                        selectRow = i;
                        break;
                    }
                }
            }
            if (selectRow > -1) {
                vmTable.setRowSelectionInterval(selectRow, selectRow);
            } else {
                vmTable.getSelectionModel().clearSelection();
            }

            Dimension dim = vmTable.getPreferredSize();

            // Tricky. Reduce height by one to avoid double line at bottom,
            // but that causes a scroll bar to appear, so remove it.
            dim.height = Math.min(dim.height-1, 100);
            localTableScrollPane.setVerticalScrollBarPolicy((dim.height < 100)
                                                ? JScrollPane.VERTICAL_SCROLLBAR_NEVER
                                                : JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
            localTableScrollPane.getViewport().setMinimumSize(dim);
            localTableScrollPane.getViewport().setPreferredSize(dim);
        }
        pack();
        setLocationRelativeTo(jConsole);
    }

    // Represents the list of managed VMs as a tabular data model.
    private static class ManagedVmTableModel extends AbstractTableModel {
        private static String[] columnNames = {
            Messages.COLUMN_NAME,
            Messages.COLUMN_PID,
        };

        private List<LocalVirtualMachine> vmList;

        public int getColumnCount() {
            return columnNames.length;
        }

        public String getColumnName(int col) {
            return columnNames[col];
        }

        public synchronized int getRowCount() {
            return vmList.size();
        }

        public synchronized Object getValueAt(int row, int col) {
            assert col >= 0 && col <= columnNames.length;
            LocalVirtualMachine vm = vmList.get(row);
            switch (col) {
                case COL_NAME: return vm.displayName();
                case COL_PID:  return vm.vmid();
                default: return null;
            }
        }

        public Class<?> getColumnClass(int column) {
            switch (column) {
                case COL_NAME: return String.class;
                case COL_PID:  return Integer.class;
                default: return super.getColumnClass(column);
            }
        }

        public ManagedVmTableModel() {
            refresh();
        }


        public synchronized LocalVirtualMachine vmAt(int pos) {
            return vmList.get(pos);
        }

        public synchronized void refresh() {
            Map<Integer, LocalVirtualMachine> map =
                LocalVirtualMachine.getAllVirtualMachines();
            vmList = new ArrayList<LocalVirtualMachine>();
            vmList.addAll(map.values());

            // data has changed
            fireTableDataChanged();
        }
    }

    // A blank component that takes up as much space as the
    // button part of a JRadioButton.
    private static class Padder extends JPanel {
        JRadioButton radioButton;

        Padder(JRadioButton radioButton) {
            this.radioButton = radioButton;

            setAccessibleName(this, Messages.BLANK);
        }

        public Dimension getPreferredSize() {
            Rectangle r = getTextRectangle(radioButton);
            int w = (r != null && r.x > 8) ? r.x : 22;

            return new Dimension(w, 0);
        }

        private static Rectangle getTextRectangle(AbstractButton button) {
            String text = button.getText();
            Icon icon = (button.isEnabled()) ? button.getIcon() : button.getDisabledIcon();

            if (icon == null && button.getUI() instanceof BasicRadioButtonUI) {
                icon = ((BasicRadioButtonUI)button.getUI()).getDefaultIcon();
            }

            if ((icon == null) && (text == null)) {
                return null;
            }

            Rectangle paintIconR = new Rectangle();
            Rectangle paintTextR = new Rectangle();
            Rectangle paintViewR = new Rectangle();
            Insets paintViewInsets = new Insets(0, 0, 0, 0);

            paintViewInsets = button.getInsets(paintViewInsets);
            paintViewR.x = paintViewInsets.left;
            paintViewR.y = paintViewInsets.top;
            paintViewR.width = button.getWidth() - (paintViewInsets.left + paintViewInsets.right);
            paintViewR.height = button.getHeight() - (paintViewInsets.top + paintViewInsets.bottom);

            Graphics g = button.getGraphics();
            if (g == null) {
                return null;
            }
                SwingUtilities.layoutCompoundLabel(button,
                                                   g.getFontMetrics(),
                                                   text,
                                                   icon,
                                                   button.getVerticalAlignment(),
                                                   button.getHorizontalAlignment(),
                                                   button.getVerticalTextPosition(),
                                                   button.getHorizontalTextPosition(),
                                                   paintViewR,
                                                   paintIconR,
                                                   paintTextR,
                                                   button.getIconTextGap());

            return paintTextR;
        }
    }

}