SampleTreeModel.java revision 0
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0N/A
0N/A/*
0N/A */
0N/A
0N/Aimport javax.swing.tree.DefaultTreeModel;
0N/Aimport javax.swing.tree.TreeNode;
0N/Aimport javax.swing.tree.TreePath;
0N/Aimport javax.swing.tree.DefaultMutableTreeNode;
0N/Aimport java.awt.Color;
0N/A
0N/A/**
0N/A * SampleTreeModel extends JTreeModel to extends valueForPathChanged.
0N/A * This method is called as a result of the user editing a value in
0N/A * the tree. If you allow editing in your tree, are using TreeNodes
0N/A * and the user object of the TreeNodes is not a String, then you're going
0N/A * to have to subclass JTreeModel as this example does.
0N/A *
0N/A * @author Scott Violet
0N/A */
0N/A
0N/Apublic class SampleTreeModel extends DefaultTreeModel
0N/A{
0N/A /**
0N/A * Creates a new instance of SampleTreeModel with newRoot set
0N/A * to the root of this model.
0N/A */
0N/A public SampleTreeModel(TreeNode newRoot) {
0N/A super(newRoot);
0N/A }
0N/A
0N/A /**
0N/A * Subclassed to message setString() to the changed path item.
0N/A */
0N/A public void valueForPathChanged(TreePath path, Object newValue) {
0N/A /* Update the user object. */
0N/A DefaultMutableTreeNode aNode = (DefaultMutableTreeNode)path.getLastPathComponent();
0N/A SampleData sampleData = (SampleData)aNode.getUserObject();
0N/A
0N/A sampleData.setString((String)newValue);
0N/A /* UUUhhhhh, pretty colors. */
0N/A sampleData.setColor(Color.green);
0N/A
0N/A /* Since we've changed how the data is to be displayed, message
0N/A nodeChanged. */
0N/A nodeChanged(aNode);
0N/A }
0N/A}