swing/checkboxtree/CheckBoxNodeRenderer.java

package skrueger.swing.checkboxtree;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;

import javax.swing.BorderFactory;
import javax.swing.JCheckBox;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellRenderer;

public class CheckBoxNodeRenderer implements TreeCellRenderer {
  protected JCheckBox leafRenderer = new JCheckBox();

  protected DefaultTreeCellRenderer nonLeafRenderer = new DefaultTreeCellRenderer();

  Color selectionBorderColor;

protected Color selectionForeground;

protected Color selectionBackground;

protected Color textForeground;

protected Color textBackground;

  public JCheckBox getLeafRenderer() {
    return leafRenderer;
  }

  public CheckBoxNodeRenderer() {
    Font fontValue;
    fontValue = UIManager.getFont("Tree.font");
    if (fontValue != null) {
      leafRenderer.setFont(fontValue);
    }
    Boolean booleanValue = (Boolean) UIManager
        .get("Tree.drawsFocusBorderAroundIcon");
    leafRenderer.setFocusPainted((booleanValue != null)
        && (booleanValue.booleanValue()));
    
    leafRenderer.setBorder(BorderFactory.createEmptyBorder(1,1,1,1));

    selectionBorderColor = UIManager.getColor("Tree.selectionBorderColor");
    selectionForeground = UIManager.getColor("Tree.selectionForeground");
    selectionBackground = UIManager.getColor("Tree.selectionBackground");
    textForeground = UIManager.getColor("Tree.textForeground");
    textBackground = UIManager.getColor("Tree.textBackground");
  }

  public Component getTreeCellRendererComponent(JTree tree, Object value,
      boolean selected, boolean expanded, boolean leaf, int row,
      boolean hasFocus) {

    Component returnValue;
    if (leaf) {

      String stringValue = tree.convertValueToText(value, selected,
          expanded, leaf, row, false);
      leafRenderer.setText(stringValue);
      leafRenderer.setSelected(false);

      leafRenderer.setEnabled(tree.isEnabled());

      if (selected) {
        leafRenderer.setForeground(selectionForeground);
        leafRenderer.setBackground(selectionBackground);
      } else {
        leafRenderer.setForeground(textForeground);
        leafRenderer.setBackground(textBackground);
      }

      if ((value != null) && (value instanceof DefaultMutableTreeNode)) {
        Object userObject = ((DefaultMutableTreeNode) value)
            .getUserObject();
        if (userObject instanceof CheckBoxNode) {
          CheckBoxNode node = (CheckBoxNode) userObject;
          leafRenderer.setText(node.getText());
          leafRenderer.setSelected(node.isSelected());
        }
        
      }
      returnValue = leafRenderer;
    } else {
      returnValue = nonLeafRenderer.getTreeCellRendererComponent(tree,
          value, selected, expanded, leaf, row, hasFocus);
    }
    return returnValue;
  }
}
1	package skrueger.swing.checkboxtree;
2
3	import java.awt.Color;
4	import java.awt.Component;
5	import java.awt.Font;
6
7	import javax.swing.BorderFactory;
8	import javax.swing.JCheckBox;
9	import javax.swing.JTree;
10	import javax.swing.UIManager;
11	import javax.swing.tree.DefaultMutableTreeNode;
12	import javax.swing.tree.DefaultTreeCellRenderer;
13	import javax.swing.tree.TreeCellRenderer;
14
15	public class CheckBoxNodeRenderer implements TreeCellRenderer {
16	protected JCheckBox leafRenderer = new JCheckBox();
17
18	protected DefaultTreeCellRenderer nonLeafRenderer = new DefaultTreeCellRenderer();
19
20	Color selectionBorderColor;
21
22	protected Color selectionForeground;
23
24	protected Color selectionBackground;
25
26	protected Color textForeground;
27
28	protected Color textBackground;
29
30	public JCheckBox getLeafRenderer() {
31	return leafRenderer;
32	}
33
34	public CheckBoxNodeRenderer() {
35	Font fontValue;
36	fontValue = UIManager.getFont("Tree.font");
37	if (fontValue != null) {
38	leafRenderer.setFont(fontValue);
39	}
40	Boolean booleanValue = (Boolean) UIManager
41	.get("Tree.drawsFocusBorderAroundIcon");
42	leafRenderer.setFocusPainted((booleanValue != null)
43	&& (booleanValue.booleanValue()));
44
45	leafRenderer.setBorder(BorderFactory.createEmptyBorder(1,1,1,1));
46
47	selectionBorderColor = UIManager.getColor("Tree.selectionBorderColor");
48	selectionForeground = UIManager.getColor("Tree.selectionForeground");
49	selectionBackground = UIManager.getColor("Tree.selectionBackground");
50	textForeground = UIManager.getColor("Tree.textForeground");
51	textBackground = UIManager.getColor("Tree.textBackground");
52	}
53
54	public Component getTreeCellRendererComponent(JTree tree, Object value,
55	boolean selected, boolean expanded, boolean leaf, int row,
56	boolean hasFocus) {
57
58	Component returnValue;
59	if (leaf) {
60
61	String stringValue = tree.convertValueToText(value, selected,
62	expanded, leaf, row, false);
63	leafRenderer.setText(stringValue);
64	leafRenderer.setSelected(false);
65
66	leafRenderer.setEnabled(tree.isEnabled());
67
68	if (selected) {
69	leafRenderer.setForeground(selectionForeground);
70	leafRenderer.setBackground(selectionBackground);
71	} else {
72	leafRenderer.setForeground(textForeground);
73	leafRenderer.setBackground(textBackground);
74	}
75
76	if ((value != null) && (value instanceof DefaultMutableTreeNode)) {
77	Object userObject = ((DefaultMutableTreeNode) value)
78	.getUserObject();
79	if (userObject instanceof CheckBoxNode) {
80	CheckBoxNode node = (CheckBoxNode) userObject;
81	leafRenderer.setText(node.getText());
82	leafRenderer.setSelected(node.isSelected());
83	}
84
85	}
86	returnValue = leafRenderer;
87	} else {
88	returnValue = nonLeafRenderer.getTreeCellRendererComponent(tree,
89	value, selected, expanded, leaf, row, hasFocus);
90	}
91	return returnValue;
92	}
93	}
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