content: /* ========================================================================
   * JCommon : a free general purpose class library for the Java(tm) platform
   * ========================================================================
   *
   * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jcommon/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library 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 Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
   * in the United States and other countries.]
   *
   * -----------------------
   * InsetsChooserPanel.java
   * -----------------------
   * (C) Copyright 2000-2008, by Andrzej Porebski and Contributors.
   *
   * Original Author:  Andrzej Porebski;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *                   Arnaud Lelievre;
   *
   * $Id: InsetsChooserPanel.java,v 1.8 2008/12/18 09:57:32 mungady Exp $
   *
   * Changes (from 7-Nov-2001)
   * -------------------------
   * 07-Nov-2001 : Added to com.jrefinery.ui package (DG);
   * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
   * 03-Feb-2003 : Added Math.abs() to ensure no negative insets can be set (DG);
   * 08-Sep-2003 : Added internationalization via use of properties
   *               resourceBundle (RFE 690236) (AL);
   * 07-Oct-2005 : Renamed getInsets() --> getInsetsValue() to avoid conflict
   *               with JComponent's getInsets() (DG);
   * 18-Dec-2008 : Use ResourceBundleWrapper - see JFreeChart patch 1607918 by
   *               Jess Thrysoee (DG);
   *
   */
  
  package org.jfree.ui;
  
  import java.awt.BorderLayout;
  import java.awt.GridBagConstraints;
  import java.awt.GridBagLayout;
  import java.awt.Insets;
  import java.util.ResourceBundle;
  
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JTextField;
  import javax.swing.border.TitledBorder;
  
  import org.jfree.util.ResourceBundleWrapper;
  
  /**
   * A component for editing an instance of the Insets class.
   *
   * @author Andrzej Porebski
   */
  public class InsetsChooserPanel extends JPanel {
  
      /** A text field for the 'top' setting. */
      private JTextField topValueEditor;
  
      /** A text field for the 'left' setting. */
      private JTextField leftValueEditor;
  
      /** A text field for the 'bottom' setting. */
      private JTextField bottomValueEditor;
  
      /** A text field for the 'right' setting. */
      private JTextField rightValueEditor;
  
      /** The resourceBundle for the localization. */
      protected static ResourceBundle localizationResources
              = ResourceBundleWrapper.getBundle(
                      "org.jfree.ui.LocalizationBundle");
  
      /**
       * Creates a chooser panel that allows manipulation of Insets values.
       * The values are initialized to the empty insets (0,0,0,0).
       */
      public InsetsChooserPanel() {
          this(new Insets(0, 0, 0, 0));
      }
  
      /**
       * Creates a chooser panel that allows manipulation of Insets values.
       * The values are initialized to the current values of provided insets.
       *
       * @param current  the insets.
       */
      public InsetsChooserPanel(Insets current) {
          current = (current == null) ? new Insets(0, 0, 0, 0) : current;
  
          this.topValueEditor = new JTextField(new IntegerDocument(), ""
                  + current.top, 0);
          this.leftValueEditor = new JTextField(new IntegerDocument(), ""
                  + current.left, 0);
          this.bottomValueEditor = new JTextField(new IntegerDocument(), ""
                  + current.bottom, 0);
          this.rightValueEditor = new JTextField(new IntegerDocument(), ""
                  + current.right, 0);
  
          final JPanel panel = new JPanel(new GridBagLayout());
          panel.setBorder(
                  new TitledBorder(localizationResources.getString("Insets")));
  
          // First row
          panel.add(new JLabel(localizationResources.getString("Top")),
              new GridBagConstraints(1, 0, 3, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.NONE,
              new Insets(0, 0, 0, 0), 0, 0));
  
          // Second row
          panel.add(new JLabel(" "), new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.BOTH,
              new Insets(0, 12, 0, 12), 8, 0));
          panel.add(this.topValueEditor, new GridBagConstraints(2, 1, 1, 1, 0.0,
              0.0, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
              new Insets(0, 0, 0, 0), 0, 0));
          panel.add(new JLabel(" "),  new GridBagConstraints(3, 1, 1, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.BOTH,
              new Insets(0, 12, 0, 11), 8, 0));
  
          // Third row
          panel.add(new JLabel(localizationResources.getString("Left")),
              new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.BOTH,
              new Insets(0, 4, 0, 4), 0, 0));
          panel.add(this.leftValueEditor, new GridBagConstraints(1, 2, 1, 1,
              0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH,
              new Insets(0, 0, 0, 0), 0, 0));
          panel.add(new JLabel(" "), new GridBagConstraints(2, 2, 1, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.NONE,
              new Insets(0, 12, 0, 12), 8, 0));
          panel.add(this.rightValueEditor, new GridBagConstraints(3, 2, 1, 1,
              0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
              new Insets(0, 0, 0, 0), 0, 0));
          panel.add(new JLabel(localizationResources.getString("Right")),
              new GridBagConstraints(4, 2, 1, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.NONE,
              new Insets(0, 4, 0, 4), 0, 0));
  
          // Fourth row
          panel.add(this.bottomValueEditor, new GridBagConstraints(2, 3, 1, 1,
              0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
              new Insets(0, 0, 0, 0), 0, 0));
  
          // Fifth row
          panel.add(new JLabel(localizationResources.getString("Bottom")),
              new GridBagConstraints(1, 4, 3, 1, 0.0, 0.0,
              GridBagConstraints.CENTER, GridBagConstraints.NONE,
              new Insets(0, 0, 0, 0), 0, 0));
          setLayout(new BorderLayout());
          add(panel, BorderLayout.CENTER);
  
      }
  
      /**
       * Returns a new <code>Insets</code> instance to match the values entered
       * on the panel.
       *
       * @return The insets.
       */
      public Insets getInsetsValue() {
          return new Insets(
              Math.abs(stringToInt(this.topValueEditor.getText())),
              Math.abs(stringToInt(this.leftValueEditor.getText())),
              Math.abs(stringToInt(this.bottomValueEditor.getText())),
              Math.abs(stringToInt(this.rightValueEditor.getText())));
      }
  
      /**
       * Converts a string representing an integer into its numerical value.
       * If this string does not represent a valid integer value, value of 0
       * is returned.
       *
       * @param value  the string.
       *
       * @return the value.
       */
      protected int stringToInt(String value) {
          value = value.trim();
          if (value.length() == 0) {
              return 0;
          }
          else {
              try {
                  return Integer.parseInt(value);
              }
              catch (NumberFormatException e) {
                  return 0;
              }
          }
      }
  
      /**
       * Calls super removeNotify and removes all subcomponents from this panel.
       */
      public void removeNotify() {
          super.removeNotify();
          removeAll();
      }
  
  }
  