/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* NumberNodeEditor.java
* Copyright (C) 2006 Robert Jung
*
*/
package weka.gui.ensembleLibraryEditor.tree;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.NumberFormat;
/**
* This class is responsible for creating the number editor GUI to allow users
* to specify ranges of numerical values.
*
* @author Robert Jung (mrbobjung@gmail.com)
* @version $Revision: 1.1 $
*/
public class NumberNodeEditor
extends JPanel
implements ActionListener, ItemListener, PropertyChangeListener {
/** for serialization */
private static final long serialVersionUID = 3486848815982334460L;
/**
* the button that toggles the type of iterator that this node represents
*/
private JButton m_IteratorButton;
/** the textField that allows editing of the number value */
private JFormattedTextField m_NumberField;
/** the checkBox that allows thi snode to be selected/unselected */
private JCheckBox m_SelectedCheckBox;
/** the label that prints the name of this node */
private JLabel m_Label;
/** the colors to use */
private Color textForeground, textBackground;
/** a reference to the node this editor is rendering */
private NumberNode m_Node;
/**
* The constructor builds a user interface based on the information queried
* from the node passed in. Specifically the iteratorType, whether the node
* is checkable, whether it is currently selected, it's current value, and
* the name to print on the label.
*
* @param node the node the editor is for
*/
public NumberNodeEditor(NumberNode node) {
this.m_Node = node;
String name = node.getText();
Number value = node.getValue();
int iteratorType = node.getIteratorType();
boolean showCheckBox = node.getCheckable();
boolean selected = node.getSelected();
textForeground = UIManager.getColor("Tree.textForeground");
textBackground = UIManager.getColor("Tree.textBackground");
setForeground(textForeground);
setBackground(textBackground);
Font fontValue;
fontValue = UIManager.getFont("Tree.font");
if (showCheckBox) {
m_SelectedCheckBox = new JCheckBox();
m_SelectedCheckBox.setSelected(selected);
m_SelectedCheckBox.setForeground(textForeground);
m_SelectedCheckBox.setBackground(textBackground);
m_SelectedCheckBox.addItemListener(this);
add(m_SelectedCheckBox);
}
m_Label = new JLabel(name);
if (fontValue != null) {
m_Label.setFont(fontValue);
}
m_Label.setForeground(textForeground);
m_Label.setBackground(textBackground);
add(m_Label);
if (iteratorType != NumberNode.NOT_ITERATOR) {
updateIteratorButton();
m_IteratorButton.setForeground(textForeground);
m_IteratorButton.setBackground(textBackground);
add(m_IteratorButton);
}
NumberFormat numberFormat = null;
try {
numberFormat = node.getNumberFormat();
} catch (NumberClassNotFoundException e) {
e.printStackTrace();
}
m_NumberField = new JFormattedTextField(numberFormat);
m_NumberField.setValue(value);
m_NumberField.setColumns(10);
m_NumberField.setForeground(textForeground);
m_NumberField.setBackground(textBackground);
m_NumberField.addPropertyChangeListener(this);
add(m_NumberField);
if (!selected && showCheckBox) {
m_Label.setEnabled(false);
if (m_IteratorButton != null)
m_IteratorButton.setEnabled(false);
m_NumberField.setEnabled(false);
}
}
/**
* This method provides a way for the ModelTreeNodeEditor to register an
* actionListener with this editor. This way, after the user has done
* something, the tree can update its editing state as well as the tree node
* structure as necessary
*
* @param actionListener the listener to use
*/
public void setActionListener(ActionListener actionListener) {
if (m_IteratorButton != null)
m_IteratorButton.addActionListener(actionListener);
}
/**
* This method provides a way for the ModelTreeNodeEditor to register an
* itemListener with this editor. This way, after the user has done
* something, the tree can update its editing state as well as the tree node
* structure as necessary
*
* @param itemListener the listener to use
*/
public void setItemListener(ItemListener itemListener) {
if (m_SelectedCheckBox != null)
m_SelectedCheckBox.addItemListener(itemListener);
}
/**
* This method provides a way for the ModelTreeNodeEditor to register a
* PropertyListener with this editor. This way, after the user has done
* something, the tree can update its editing state as well as the tree node
* structure as necessary
*
* @param propertyChangeListener the listener to use
*/
public void setPropertyChangeListener(
PropertyChangeListener propertyChangeListener) {
if (m_NumberField != null)
m_NumberField.addPropertyChangeListener(propertyChangeListener);
}
/**
* This is a helper function that repaints the iterator toggling button
* after an event.
*
*/
private void updateIteratorButton() {
if (m_Node.getIteratorType() == NumberNode.PLUS_EQUAL) {
m_IteratorButton = new JButton("+=");
m_IteratorButton.addActionListener(this);
} else if (m_Node.getIteratorType() == NumberNode.TIMES_EQUAL) {
m_IteratorButton = new JButton("*=");
m_IteratorButton.addActionListener(this);
}
m_IteratorButton.repaint();
repaint();
}
/**
* This is the actionListener that while handle events from the JButton that
* specifies the type of iterator. It simply updates both the label string
* for the button and the iteratorType of the NumberNode
*
* @param e the event
*/
public void actionPerformed(ActionEvent e) {
if (m_Node.getIteratorType() == NumberNode.PLUS_EQUAL) {
m_Node.setIteratorType(NumberNode.TIMES_EQUAL);
try {
if ((m_Node.getValue()).equals(m_Node.getOneValue())) {
m_Node.setValue(m_Node.getTwoValue());
updateIteratorButton();
}
} catch (NumberClassNotFoundException e1) {
e1.printStackTrace();
}
} else if (m_Node.getIteratorType() == NumberNode.TIMES_EQUAL) {
m_Node.setIteratorType(NumberNode.PLUS_EQUAL);
try {
if ((m_Node.getValue()).equals(m_Node.getTwoValue())) {
m_Node.setValue(m_Node.getOneValue());
updateIteratorButton();
}
} catch (NumberClassNotFoundException e1) {
e1.printStackTrace();
}
}
}
/**
* This is the Listener that while handle events from the checkBox ,if this
* node has one. Note that before we can select or deselect this node we
* have to ask permission from this node's parent. (wow, what fitting
* terminology). Anyway, the reason is that we cannot have an iterator node
* selected if there is no max node selected - conversely we cannot have a
* max node be deselected if the iterator node is selected.
*
* @param e the event
*/
public void itemStateChanged(ItemEvent e) {
if (e.getStateChange() == ItemEvent.SELECTED) {
PropertyNode parent = (PropertyNode) m_Node.getParent();
if (parent.canSelect(m_Node)) {
m_Node.setSelected(true);
m_Label.setEnabled(true);
if (m_IteratorButton != null)
m_IteratorButton.setEnabled(true);
m_NumberField.setEnabled(true);
} else {
m_SelectedCheckBox.setSelected(false);
}
} else if (e.getStateChange() == ItemEvent.DESELECTED) {
PropertyNode parent = (PropertyNode) m_Node.getParent();
if (parent.canDeselect(m_Node)) {
m_Node.setSelected(false);
m_Label.setEnabled(false);
if (m_IteratorButton != null)
m_IteratorButton.setEnabled(false);
m_NumberField.setEnabled(false);
} else {
m_SelectedCheckBox.setSelected(true);
}
}
}
/**
* This is the Listener that while handle events from the text box for this
* node. It basically grabs the value from the text field and then casts it
* to the correct type and sets the value of the node.
*
* @param evt the event
*/
public void propertyChange(PropertyChangeEvent evt) {
Object source = evt.getSource();
if (source instanceof JFormattedTextField
&& evt.getPropertyName().equals("value")
&& (((JFormattedTextField) evt.getSource()).getValue() != null)) {
Number newValue = null;
Number value = m_Node.getValue();
JFormattedTextField field = (JFormattedTextField) evt.getSource();
Number fieldValue = (Number) field.getValue();
if (value instanceof Double)
newValue = new Double(NumberNode.roundDouble((fieldValue.doubleValue())));
else if (value instanceof Integer)
newValue = new Integer((fieldValue).intValue());
else if (value instanceof Float)
newValue = new Float(NumberNode.roundFloat((fieldValue.floatValue())));
else if (value instanceof Long)
newValue = new Long((fieldValue).longValue());
else {
try {
throw new NumberClassNotFoundException(value.getClass()
+ " not currently supported.");
} catch (NumberClassNotFoundException e) {
e.printStackTrace();
}
}
field.setValue(newValue);
m_Node.setValue(newValue);
}
}
}