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The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

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/*
 *   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 3 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, see .
 */

/*
 *    FlowByExpressionCustomizer.java
 *    Copyright (C) 2011-2012 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.gui.beans;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.SwingConstants;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.DefaultTreeSelectionModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

import weka.core.Environment;
import weka.core.EnvironmentHandler;
import weka.core.Instances;
import weka.gui.PropertySheetPanel;

/**
 * Customizer for the FlowByExpression node
 * 
 * @author Mark Hall (mhall{[at]}pentaho{[dot]}com)
 * @version $Revision: 10638 $
 */
public class FlowByExpressionCustomizer extends JPanel implements
  EnvironmentHandler, BeanCustomizer, CustomizerCloseRequester {

  /** For serialization */
  private static final long serialVersionUID = -3574741335754017794L;

  protected Environment m_env = Environment.getSystemWide();
  protected ModifyListener m_modifyL = null;
  protected FlowByExpression m_expression;

  protected JComboBox m_lhsField = new EnvironmentField.WideComboBox();
  protected JComboBox m_operatorCombo = new JComboBox();
  protected JComboBox m_rhsField = new EnvironmentField.WideComboBox();
  protected JCheckBox m_rhsIsAttribute = new JCheckBox("RHS is attribute");
  protected JLabel m_expressionLab = new JLabel();

  protected JComboBox m_trueData = new JComboBox();
  protected JComboBox m_falseData = new JComboBox();

  protected JTree m_expressionTree;
  protected DefaultMutableTreeNode m_treeRoot;

  protected JButton m_addExpressionNode = new JButton("Add Expression node");
  protected JButton m_addBracketNode = new JButton("Add bracket node");
  protected JButton m_toggleNegation = new JButton("Toggle negation");
  protected JButton m_andOr = new JButton("And/Or");
  protected JButton m_deleteNode = new JButton("Delete node");

  protected PropertySheetPanel m_tempEditor = new PropertySheetPanel();

  protected Window m_parent;

  /**
   * Constructor
   */
  public FlowByExpressionCustomizer() {
    setLayout(new BorderLayout());
  }

  private void setup() {
    JPanel aboutAndControlHolder = new JPanel();
    aboutAndControlHolder.setLayout(new BorderLayout());

    JPanel controlHolder = new JPanel();
    controlHolder.setLayout(new BorderLayout());
    JPanel fieldHolder = new JPanel();
    fieldHolder.setLayout(new GridLayout(0, 4));

    JPanel lhsP = new JPanel();
    lhsP.setLayout(new BorderLayout());
    lhsP.setBorder(BorderFactory.createTitledBorder("Attribute"));

    // m_lhsField = new EnvironmentField(m_env);
    m_lhsField.setEditable(true);

    lhsP.add(m_lhsField, BorderLayout.CENTER);
    lhsP.setToolTipText("Name or index of attribute. "
      + "also accepts
the special labels \"/first\" and \"/last\"" + " to indicate
the first and last attribute respecitively"); m_lhsField.setToolTipText("Name or index of attribute. " + "also accepts
the special labels \"/first\" and \"/last\"" + " to indicate
the first and last attribute respecitively"); JPanel operatorP = new JPanel(); operatorP.setLayout(new BorderLayout()); operatorP.setBorder(BorderFactory.createTitledBorder("Operator")); m_operatorCombo.addItem(" = "); m_operatorCombo.addItem(" != "); m_operatorCombo.addItem(" < "); m_operatorCombo.addItem(" <= "); m_operatorCombo.addItem(" > "); m_operatorCombo.addItem(" >= "); m_operatorCombo.addItem(" isMissing "); m_operatorCombo.addItem(" contains "); m_operatorCombo.addItem(" startsWith "); m_operatorCombo.addItem(" endsWith "); m_operatorCombo.addItem(" regex "); operatorP.add(m_operatorCombo, BorderLayout.CENTER); JPanel rhsP = new JPanel(); rhsP.setLayout(new BorderLayout()); rhsP.setBorder(BorderFactory.createTitledBorder("Constant or attribute")); rhsP.setToolTipText("Constant value to test/check for. If " + "testing
against an attribute, then this specifies" + "an attribute index or name"); // m_rhsField = new EnvironmentField(m_env); m_rhsField.setEditable(true); rhsP.add(m_rhsField, BorderLayout.CENTER); fieldHolder.add(lhsP); fieldHolder.add(operatorP); fieldHolder.add(rhsP); fieldHolder.add(m_rhsIsAttribute); controlHolder.add(fieldHolder, BorderLayout.SOUTH); JPanel tempPanel = new JPanel(); tempPanel.setLayout(new BorderLayout()); JPanel expressionP = new JPanel(); expressionP.setLayout(new BorderLayout()); expressionP.setBorder(BorderFactory.createTitledBorder("Expression")); JPanel tempE = new JPanel(); tempE.setLayout(new BorderLayout()); tempE.setBorder(BorderFactory.createEmptyBorder(5, 0, 5, 0)); tempE.add(m_expressionLab, BorderLayout.CENTER); JScrollPane expressionScroller = new JScrollPane(tempE); expressionP.add(expressionScroller, BorderLayout.CENTER); tempPanel.add(expressionP, BorderLayout.SOUTH); // JPanel flowControlP = new JPanel(); flowControlP.setLayout(new GridLayout(2, 2)); flowControlP.add(new JLabel("Send true instances to node", SwingConstants.RIGHT)); flowControlP.add(m_trueData); flowControlP.add(new JLabel("Send false instances to node", SwingConstants.RIGHT)); flowControlP.add(m_falseData); tempPanel.add(flowControlP, BorderLayout.NORTH); String falseStepN = m_expression.getFalseStepName(); String trueStepN = m_expression.getTrueStepName(); Object[] connectedSteps = m_expression.m_downstream; m_trueData.addItem(""); m_falseData.addItem(""); if (connectedSteps != null && connectedSteps.length > 0) { if (connectedSteps[0] != null) { String first = ((BeanCommon) connectedSteps[0]).getCustomName(); m_trueData.addItem(first); m_falseData.addItem(first); } if (connectedSteps.length > 1 && connectedSteps[1] != null) { String second = ((BeanCommon) connectedSteps[1]).getCustomName(); m_trueData.addItem(second); m_falseData.addItem(second); } } if (falseStepN != null && falseStepN.length() > 0) { m_falseData.setSelectedItem(falseStepN); } if (trueStepN != null && trueStepN.length() > 0) { m_trueData.setSelectedItem(trueStepN); } controlHolder.add(tempPanel, BorderLayout.NORTH); aboutAndControlHolder.add(controlHolder, BorderLayout.SOUTH); JPanel aboutP = m_tempEditor.getAboutPanel(); aboutAndControlHolder.add(aboutP, BorderLayout.NORTH); add(aboutAndControlHolder, BorderLayout.NORTH); addButtons(); m_rhsIsAttribute.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (m_expressionTree != null) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { ((FlowByExpression.ExpressionClause) thisNode).m_rhsIsAttribute = m_rhsIsAttribute.isSelected(); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } } } } }); m_operatorCombo.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (m_operatorCombo.getSelectedIndex() > 5) { m_rhsIsAttribute.setSelected(false); m_rhsIsAttribute.setEnabled(false); } else { m_rhsIsAttribute.setEnabled(true); } if (m_expressionTree != null) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { String selection = m_operatorCombo.getSelectedItem().toString(); FlowByExpression.ExpressionClause.ExpressionType t = FlowByExpression.ExpressionClause.ExpressionType.EQUALS; for (FlowByExpression.ExpressionClause.ExpressionType et : FlowByExpression.ExpressionClause.ExpressionType .values()) { if (et.toString().equals(selection)) { t = et; break; } } ((FlowByExpression.ExpressionClause) thisNode).m_operator = t; DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } } } } }); m_lhsField.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (m_expressionTree != null) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { Object text = m_lhsField.getSelectedItem(); if (text != null) { ((FlowByExpression.ExpressionClause) thisNode).m_lhsAttributeName = text.toString(); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } } } } } }); m_lhsField.getEditor().getEditorComponent() .addKeyListener(new KeyAdapter() { @Override public void keyReleased(KeyEvent e) { if (m_expressionTree != null) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { String text = ""; if (m_lhsField.getSelectedItem() != null) { text = m_lhsField.getSelectedItem().toString(); } java.awt.Component theEditor = m_lhsField.getEditor().getEditorComponent(); if (theEditor instanceof JTextField) { text = ((JTextField) theEditor).getText(); } ((FlowByExpression.ExpressionClause) thisNode).m_lhsAttributeName = text; DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } } } } }); m_rhsField.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if (m_expressionTree != null) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { Object text = m_rhsField.getSelectedItem(); if (text != null) { ((FlowByExpression.ExpressionClause) thisNode).m_rhsOperand = text.toString(); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } } } } } }); m_rhsField.getEditor().getEditorComponent() .addKeyListener(new KeyAdapter() { @Override public void keyReleased(KeyEvent e) { if (m_expressionTree != null) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { String text = ""; if (m_rhsField.getSelectedItem() != null) { text = m_rhsField.getSelectedItem().toString(); } java.awt.Component theEditor = m_rhsField.getEditor().getEditorComponent(); if (theEditor instanceof JTextField) { text = ((JTextField) theEditor).getText(); } if (m_rhsField.getSelectedItem() != null) { ((FlowByExpression.ExpressionClause) thisNode).m_rhsOperand = text; DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } } } } } }); // try and setup combo boxes with incoming attribute names if (m_expression.getConnectedFormat() != null) { Instances incoming = m_expression.getConnectedFormat(); m_lhsField.removeAllItems(); m_rhsField.removeAllItems(); for (int i = 0; i < incoming.numAttributes(); i++) { m_lhsField.addItem(incoming.attribute(i).name()); m_rhsField.addItem(incoming.attribute(i).name()); } } Dimension d = operatorP.getPreferredSize(); lhsP.setPreferredSize(d); rhsP.setPreferredSize(d); } private void addButtons() { JButton okBut = new JButton("OK"); JButton cancelBut = new JButton("Cancel"); JPanel butHolder = new JPanel(); butHolder.setLayout(new GridLayout(1, 2)); butHolder.add(okBut); butHolder.add(cancelBut); add(butHolder, BorderLayout.SOUTH); okBut.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { closingOK(); m_parent.dispose(); } }); cancelBut.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { closingCancel(); m_parent.dispose(); } }); } private void updateExpressionLabel() { StringBuffer buff = new StringBuffer(); FlowByExpression.ExpressionNode root = (FlowByExpression.ExpressionNode) m_treeRoot.getUserObject(); root.toStringDisplay(buff); m_expressionLab.setText(buff.toString()); } private void setExpressionEditor(FlowByExpression.ExpressionClause node) { String lhs = node.m_lhsAttributeName; if (lhs != null) { m_lhsField.setSelectedItem(lhs); } String rhs = node.m_rhsOperand; if (rhs != null) { m_rhsField.setSelectedItem(rhs); } FlowByExpression.ExpressionClause.ExpressionType opp = node.m_operator; int oppIndex = opp.ordinal(); m_operatorCombo.setSelectedIndex(oppIndex); m_rhsIsAttribute.setSelected(node.m_rhsIsAttribute); } private void setupTree() { JPanel treeHolder = new JPanel(); treeHolder.setLayout(new BorderLayout()); treeHolder.setBorder(BorderFactory.createTitledBorder("Expression tree")); String expressionString = m_expression.getExpressionString(); if (expressionString == null || expressionString.length() == 0) { expressionString = "()"; } FlowByExpression.BracketNode root = new FlowByExpression.BracketNode(); root.parseFromInternal(expressionString); root.setShowAndOr(false); m_treeRoot = root.toJTree(null); DefaultTreeModel model = new DefaultTreeModel(m_treeRoot); m_expressionTree = new JTree(model); m_expressionTree.setEnabled(true); m_expressionTree.setRootVisible(true); m_expressionTree.setShowsRootHandles(true); DefaultTreeSelectionModel selectionModel = new DefaultTreeSelectionModel(); selectionModel.setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); m_expressionTree.setSelectionModel(selectionModel); // add mouse listener to tree m_expressionTree.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.ExpressionClause) { setExpressionEditor((FlowByExpression.ExpressionClause) thisNode); } } } } }); updateExpressionLabel(); JScrollPane treeView = new JScrollPane(m_expressionTree); treeHolder.add(treeView, BorderLayout.CENTER); JPanel butHolder = new JPanel(); // butHolder.setLayout(new BorderLayout()); butHolder.add(m_addExpressionNode); butHolder.add(m_addBracketNode); butHolder.add(m_toggleNegation); butHolder.add(m_andOr); butHolder.add(m_deleteNode); treeHolder.add(butHolder, BorderLayout.NORTH); add(treeHolder, BorderLayout.CENTER); Dimension d = treeHolder.getPreferredSize(); treeHolder.setPreferredSize(new Dimension(d.width, d.height / 2)); m_andOr.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); thisNode.setIsOr(!thisNode.isOr()); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } else { JOptionPane .showMessageDialog( FlowByExpressionCustomizer.this, "Please select a node in the tree to alter the boolean operator of", "And/Or", JOptionPane.INFORMATION_MESSAGE); } } }); m_toggleNegation.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); thisNode.setNegated(!thisNode.isNegated()); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } } else { JOptionPane.showMessageDialog(FlowByExpressionCustomizer.this, "Please select a node in the tree to toggle its negation", "Toggle negation", JOptionPane.INFORMATION_MESSAGE); } } }); m_deleteNode.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); if (tNode == m_treeRoot) { JOptionPane.showMessageDialog(FlowByExpressionCustomizer.this, "You can't delete the root of the tree!", "Delete node", JOptionPane.INFORMATION_MESSAGE); } else { FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); FlowByExpression.BracketNode parentNode = (FlowByExpression.BracketNode) ((DefaultMutableTreeNode) tNode .getParent()).getUserObject(); // remove from internal tree structure parentNode.removeChild(thisNode); // remove from jtree structure DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tmodel.removeNodeFromParent(tNode); updateExpressionLabel(); } } } else { JOptionPane.showMessageDialog(FlowByExpressionCustomizer.this, "Please select a node in the tree to delete.", "Delete node", JOptionPane.INFORMATION_MESSAGE); } } }); m_addExpressionNode.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.BracketNode) { FlowByExpression.ExpressionClause newNode = new FlowByExpression.ExpressionClause( FlowByExpression.ExpressionClause.ExpressionType.EQUALS, "", "", false, false); ((FlowByExpression.BracketNode) thisNode).addChild(newNode); DefaultMutableTreeNode childNode = new DefaultMutableTreeNode(newNode); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tNode.add(childNode); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } else { JOptionPane.showMessageDialog(FlowByExpressionCustomizer.this, "An expression can only be added to a bracket node.", "Add expression", JOptionPane.INFORMATION_MESSAGE); } } } else { JOptionPane .showMessageDialog( FlowByExpressionCustomizer.this, "You must select a bracket node in the tree view to add a new expression to.", "Add expression", JOptionPane.INFORMATION_MESSAGE); } } }); m_addBracketNode.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { TreePath p = m_expressionTree.getSelectionPath(); if (p != null) { if (p.getLastPathComponent() instanceof DefaultMutableTreeNode) { DefaultMutableTreeNode tNode = (DefaultMutableTreeNode) p.getLastPathComponent(); FlowByExpression.ExpressionNode thisNode = (FlowByExpression.ExpressionNode) tNode.getUserObject(); if (thisNode instanceof FlowByExpression.BracketNode) { FlowByExpression.BracketNode newNode = new FlowByExpression.BracketNode(); ((FlowByExpression.BracketNode) thisNode).addChild(newNode); DefaultMutableTreeNode childNode = new DefaultMutableTreeNode(newNode); DefaultTreeModel tmodel = (DefaultTreeModel) m_expressionTree.getModel(); tNode.add(childNode); tmodel.nodeStructureChanged(tNode); updateExpressionLabel(); } else { JOptionPane .showMessageDialog( FlowByExpressionCustomizer.this, "An new bracket node can only be added to an existing bracket node.", "Add bracket", JOptionPane.INFORMATION_MESSAGE); } } } else { JOptionPane .showMessageDialog( FlowByExpressionCustomizer.this, "You must select an existing bracket node in the tree in order to add a new bracket node.", "Add bracket", JOptionPane.INFORMATION_MESSAGE); } } }); } @Override public void setObject(Object o) { if (o instanceof FlowByExpression) { m_expression = (FlowByExpression) o; m_tempEditor.setTarget(o); setup(); setupTree(); } } @Override public void setParentWindow(Window parent) { m_parent = parent; } @Override public void setModifiedListener(ModifyListener l) { m_modifyL = l; } @Override public void setEnvironment(Environment env) { m_env = env; } /** * Set the current editor contents on the object being edited */ private void closingOK() { if (m_treeRoot != null) { FlowByExpression.ExpressionNode en = (FlowByExpression.ExpressionNode) m_treeRoot.getUserObject(); StringBuffer buff = new StringBuffer(); en.toStringInternal(buff); m_expression.setExpressionString(buff.toString()); if (m_trueData.getSelectedItem() != null && m_trueData.getSelectedItem().toString().length() > 0) { m_expression.setTrueStepName(m_trueData.getSelectedItem().toString()); } if (m_falseData.getSelectedItem() != null && m_falseData.getSelectedItem().toString().length() > 0) { m_expression.setFalseStepName(m_falseData.getSelectedItem().toString()); } } } /** * Stuff to do when cancel is pressed */ private void closingCancel() { // nothing to do here } }




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