DynamicTreeDemopublic class DynamicTreeDemo extends JPanel
Fields Summary |
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private int | newNodeSuffix |
Constructors Summary |
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public DynamicTreeDemo(JFrame frame)
//create the components
final DynamicTree treePanel = new DynamicTree();
populateTree(treePanel);
JButton addButton = new JButton("Add");
addButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
treePanel.addObject("New Node " + newNodeSuffix++);
}
});
JButton removeButton = new JButton("Remove");
removeButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
treePanel.removeCurrentNode();
}
});
JButton clearButton = new JButton("Clear");
clearButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
treePanel.clear();
}
});
//Lay everything out.
setLayout(new BorderLayout());
treePanel.setPreferredSize(new Dimension(300, 150));
add(treePanel, BorderLayout.CENTER);
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(0,1));
panel.add(addButton);
panel.add(removeButton);
panel.add(clearButton);
add(panel, BorderLayout.EAST);
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Methods Summary |
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public static void | main(java.lang.String[] args)
JFrame frame = new JFrame("DynamicTreeDemo");
Container contentPane = frame.getContentPane();
contentPane.setLayout(new GridLayout(1,1));
contentPane.add(new DynamicTreeDemo(frame));
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.pack();
frame.setVisible(true);
| public void | populateTree(DynamicTree treePanel)
String p1Name = new String("Parent 1");
String p2Name = new String("Parent 2");
String c1Name = new String("Child 1");
String c2Name = new String("Child 2");
DefaultMutableTreeNode p1, p2;
p1 = treePanel.addObject(null, p1Name);
p2 = treePanel.addObject(null, p2Name);
treePanel.addObject(p1, c1Name);
treePanel.addObject(p1, c2Name);
treePanel.addObject(p2, c1Name);
treePanel.addObject(p2, c2Name);
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