[4] | 1 | /* |
---|
| 2 | * This program is free software; you can redistribute it and/or modify |
---|
| 3 | * it under the terms of the GNU General Public License as published by |
---|
| 4 | * the Free Software Foundation; either version 2 of the License, or |
---|
| 5 | * (at your option) any later version. |
---|
| 6 | * |
---|
| 7 | * This program is distributed in the hope that it will be useful, |
---|
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 10 | * GNU General Public License for more details. |
---|
| 11 | * |
---|
| 12 | * You should have received a copy of the GNU General Public License |
---|
| 13 | * along with this program; if not, write to the Free Software |
---|
| 14 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
---|
| 15 | */ |
---|
| 16 | |
---|
| 17 | /* |
---|
| 18 | * ClassValuePickerCustomizer.java |
---|
| 19 | * Copyright (C) 2004 University of Waikato, Hamilton, New Zealand |
---|
| 20 | * |
---|
| 21 | */ |
---|
| 22 | |
---|
| 23 | package weka.gui.beans; |
---|
| 24 | |
---|
| 25 | import weka.core.Instances; |
---|
| 26 | |
---|
| 27 | import java.awt.BorderLayout; |
---|
| 28 | import java.awt.event.ActionEvent; |
---|
| 29 | import java.awt.event.ActionListener; |
---|
| 30 | import java.beans.Customizer; |
---|
| 31 | import java.beans.PropertyChangeListener; |
---|
| 32 | import java.beans.PropertyChangeSupport; |
---|
| 33 | |
---|
| 34 | import javax.swing.BorderFactory; |
---|
| 35 | import javax.swing.DefaultComboBoxModel; |
---|
| 36 | import javax.swing.JComboBox; |
---|
| 37 | import javax.swing.JLabel; |
---|
| 38 | import javax.swing.JPanel; |
---|
| 39 | |
---|
| 40 | /** |
---|
| 41 | * @author Mark Hall |
---|
| 42 | * @version $Revision: 1.6 $ |
---|
| 43 | */ |
---|
| 44 | public class ClassValuePickerCustomizer |
---|
| 45 | extends JPanel |
---|
| 46 | implements Customizer, CustomizerClosingListener, DataFormatListener { |
---|
| 47 | |
---|
| 48 | /** for serialization */ |
---|
| 49 | private static final long serialVersionUID = 8213423053861600469L; |
---|
| 50 | |
---|
| 51 | private boolean m_displayValNames = false; |
---|
| 52 | |
---|
| 53 | private ClassValuePicker m_classValuePicker; |
---|
| 54 | |
---|
| 55 | private PropertyChangeSupport m_pcSupport = |
---|
| 56 | new PropertyChangeSupport(this); |
---|
| 57 | |
---|
| 58 | private JComboBox m_ClassValueCombo = new JComboBox(); |
---|
| 59 | private JPanel m_holderP = new JPanel(); |
---|
| 60 | |
---|
| 61 | private JLabel m_messageLabel = new JLabel("No customization possible at present."); |
---|
| 62 | |
---|
| 63 | public ClassValuePickerCustomizer() { |
---|
| 64 | setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 5, 5, 5)); |
---|
| 65 | |
---|
| 66 | setLayout(new BorderLayout()); |
---|
| 67 | add(new javax.swing.JLabel("ClassValuePickerCustomizer"), |
---|
| 68 | BorderLayout.NORTH); |
---|
| 69 | m_holderP.setLayout(new BorderLayout()); |
---|
| 70 | m_holderP.setBorder(BorderFactory.createTitledBorder("Choose class value")); |
---|
| 71 | m_holderP.add(m_ClassValueCombo, BorderLayout.CENTER); |
---|
| 72 | m_ClassValueCombo.addActionListener(new ActionListener() { |
---|
| 73 | public void actionPerformed(ActionEvent e) { |
---|
| 74 | if (m_classValuePicker != null) { |
---|
| 75 | m_classValuePicker.setClassValueIndex(m_ClassValueCombo.getSelectedIndex()); |
---|
| 76 | } |
---|
| 77 | } |
---|
| 78 | }); |
---|
| 79 | |
---|
| 80 | add(m_messageLabel, BorderLayout.CENTER); |
---|
| 81 | } |
---|
| 82 | |
---|
| 83 | private void setUpNoCustPossible() { |
---|
| 84 | if (m_displayValNames == true) { |
---|
| 85 | remove(m_holderP); |
---|
| 86 | add(m_messageLabel, BorderLayout.CENTER); |
---|
| 87 | m_displayValNames = false; |
---|
| 88 | } |
---|
| 89 | validate(); repaint(); |
---|
| 90 | } |
---|
| 91 | |
---|
| 92 | private void setUpValueSelection(Instances format) { |
---|
| 93 | if (format.classIndex() < 0 || format.classAttribute().isNumeric()) { |
---|
| 94 | // cant do anything in this case |
---|
| 95 | return; |
---|
| 96 | } |
---|
| 97 | if (m_displayValNames == false) { |
---|
| 98 | remove(m_messageLabel); |
---|
| 99 | } |
---|
| 100 | |
---|
| 101 | int existingClassVal = m_classValuePicker.getClassValueIndex(); |
---|
| 102 | String [] attribValNames = new String [format.classAttribute().numValues()]; |
---|
| 103 | for (int i = 0; i < attribValNames.length; i++) { |
---|
| 104 | attribValNames[i] = format.classAttribute().value(i); |
---|
| 105 | } |
---|
| 106 | m_ClassValueCombo.setModel(new DefaultComboBoxModel(attribValNames)); |
---|
| 107 | if (attribValNames.length > 0) { |
---|
| 108 | if (existingClassVal < attribValNames.length) { |
---|
| 109 | m_ClassValueCombo.setSelectedIndex(existingClassVal); |
---|
| 110 | } |
---|
| 111 | } |
---|
| 112 | if (m_displayValNames == false) { |
---|
| 113 | add(m_holderP, BorderLayout.CENTER); |
---|
| 114 | m_displayValNames = true; |
---|
| 115 | } |
---|
| 116 | validate(); repaint(); |
---|
| 117 | } |
---|
| 118 | |
---|
| 119 | /** |
---|
| 120 | * Set the bean to be edited |
---|
| 121 | * |
---|
| 122 | * @param object an <code>Object</code> value |
---|
| 123 | */ |
---|
| 124 | public void setObject(Object object) { |
---|
| 125 | if (m_classValuePicker != (ClassValuePicker)object) { |
---|
| 126 | // remove ourselves as a listener from the old ClassvaluePicker (if necessary) |
---|
| 127 | if (m_classValuePicker != null) { |
---|
| 128 | m_classValuePicker.removeDataFormatListener(this); |
---|
| 129 | } |
---|
| 130 | m_classValuePicker = (ClassValuePicker)object; |
---|
| 131 | // add ourselves as a data format listener |
---|
| 132 | m_classValuePicker.addDataFormatListener(this); |
---|
| 133 | if (m_classValuePicker.getConnectedFormat() != null) { |
---|
| 134 | setUpValueSelection(m_classValuePicker.getConnectedFormat()); |
---|
| 135 | } |
---|
| 136 | } |
---|
| 137 | } |
---|
| 138 | |
---|
| 139 | public void customizerClosing() { |
---|
| 140 | // remove ourselves as a listener from the ClassValuePicker (if necessary) |
---|
| 141 | if (m_classValuePicker != null) { |
---|
| 142 | System.err.println("Customizer deregistering with class value picker"); |
---|
| 143 | m_classValuePicker.removeDataFormatListener(this); |
---|
| 144 | } |
---|
| 145 | } |
---|
| 146 | |
---|
| 147 | public void newDataFormat(DataSetEvent dse) { |
---|
| 148 | if (dse.getDataSet() != null) { |
---|
| 149 | setUpValueSelection(m_classValuePicker.getConnectedFormat()); |
---|
| 150 | } else { |
---|
| 151 | setUpNoCustPossible(); |
---|
| 152 | } |
---|
| 153 | } |
---|
| 154 | |
---|
| 155 | /** |
---|
| 156 | * Add a property change listener |
---|
| 157 | * |
---|
| 158 | * @param pcl a <code>PropertyChangeListener</code> value |
---|
| 159 | */ |
---|
| 160 | public void addPropertyChangeListener(PropertyChangeListener pcl) { |
---|
| 161 | m_pcSupport.addPropertyChangeListener(pcl); |
---|
| 162 | } |
---|
| 163 | |
---|
| 164 | /** |
---|
| 165 | * Remove a property change listener |
---|
| 166 | * |
---|
| 167 | * @param pcl a <code>PropertyChangeListener</code> value |
---|
| 168 | */ |
---|
| 169 | public void removePropertyChangeListener(PropertyChangeListener pcl) { |
---|
| 170 | m_pcSupport.removePropertyChangeListener(pcl); |
---|
| 171 | } |
---|
| 172 | } |
---|