implements TreeModel : TreeModel « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. TreeModel

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Enumeration;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;

public class UIDefaultsTreeModel implements TreeModel {
  DefaultTreeModel innerModel;

  DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("UIDefaults");

  DefaultMutableTreeNode colorNode = new DefaultMutableTreeNode("Color Resources");

  DefaultMutableTreeNode borderNode = new DefaultMutableTreeNode("Border Resources");

  DefaultMutableTreeNode fontNode = new DefaultMutableTreeNode("Font Resources");

  DefaultMutableTreeNode iconNode = new DefaultMutableTreeNode("Icon Resources");

  DefaultMutableTreeNode otherNode = new DefaultMutableTreeNode("Other Resources");

  public UIDefaultsTreeModel() {
    innerModel = new DefaultTreeModel(rootNode);
    innerModel.insertNodeInto(colorNode, rootNode, 0);
    innerModel.insertNodeInto(borderNode, rootNode, 1);
    innerModel.insertNodeInto(fontNode, rootNode, 2);
    innerModel.insertNodeInto(iconNode, rootNode, 3);
    innerModel.insertNodeInto(otherNode, rootNode, 4);
    UIDefaults defaults = UIManager.getDefaults();
    Enumeration elems = defaults.keys();
    String keyName;
    Object valueForKey;
    while (elems.hasMoreElements()) {
      DefaultMutableTreeNode newKeyNode;
      DefaultMutableTreeNode newValueNode;
      try {
        keyName = elems.nextElement().toString();
        valueForKey = defaults.get(keyName);

        newKeyNode = new DefaultMutableTreeNode(keyName);
        newValueNode = new DefaultMutableTreeNode(valueForKey);

        if (valueForKey instanceof java.awt.Color) {
          innerModel.insertNodeInto(newKeyNode, colorNode, 0);
        } else if (valueForKey instanceof javax.swing.border.Border) {
          innerModel.insertNodeInto(newKeyNode, borderNode, 0);
        } else if (valueForKey instanceof java.awt.Font) {
          innerModel.insertNodeInto(newKeyNode, fontNode, 0);
        } else if (valueForKey instanceof javax.swing.Icon) {
          innerModel.insertNodeInto(newKeyNode, iconNode, 0);
        } else {
          innerModel.insertNodeInto(newKeyNode, otherNode, 0);
        }
        innerModel.insertNodeInto(newValueNode, newKeyNode, 0);
      } catch (NullPointerException e) {
      }
    }
  }

  public Object getRoot() {
    return innerModel.getRoot();
  }

  public Object getChild(Object parm1, int parm2) {
    return innerModel.getChild(parm1, parm2);
  }

  public int getChildCount(Object parm1) {
    return innerModel.getChildCount(parm1);
  }

  public boolean isLeaf(Object parm1) {
    return innerModel.isLeaf(parm1);
  }

  public void valueForPathChanged(TreePath parm1, Object parm2) {
    innerModel.valueForPathChanged(parm1, parm2);
  }

  public int getIndexOfChild(Object parm1, Object parm2) {
    return innerModel.getIndexOfChild(parm1, parm2);
  }

  public void addTreeModelListener(TreeModelListener parm1) {
    innerModel.addTreeModelListener(parm1);
  }

  public void removeTreeModelListener(TreeModelListener parm1) {
    innerModel.removeTreeModelListener(parm1);
  }

  public static void main(String[] args) {
    JFrame treeFrame1 = new JFrame();

    JScrollPane jScrollPane1 = new JScrollPane();
    JTree jTree1 = new JTree(new UIDefaultsTreeModel());

    treeFrame1.setSize(new Dimension(400, 300));
    treeFrame1.addWindowListener(new WindowAdapter() {
      public void windowClosed(WindowEvent e) {
        System.exit(0);
      }
    });
    treeFrame1.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
    treeFrame1.getContentPane().add(jScrollPane1, BorderLayout.CENTER);
    jScrollPane1.getViewport().add(jTree1, null);

    treeFrame1.setVisible(true);
  }
}

14.68.TreeModel
	14.68.1.	Tree node editing with DefaultTreeModel
	14.68.2.	implements TreeModel
	14.68.3.	Genealogy Tree
	14.68.4.	JTree.getModel().addTreeModelListener(new TreeModelListener())
	14.68.5.	Expand All for a tree path
	14.68.6.	Get tree path from TreeNode