MikoBoyzzz - OU812

Try These Swing Examples..

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InvisibleTreeModel.java

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/* (swing1.1) */
import javax.swing.tree.*;
/** * @version 1.0 01/12/99 */public class InvisibleTreeModel extends DefaultTreeModel {
protected boolean filterIsActive;
public InvisibleTreeModel(TreeNode root) { this(root, false); }
public InvisibleTreeModel(TreeNode root, boolean asksAllowsChildren) { this(root, false, false); }
public InvisibleTreeModel(TreeNode root, boolean asksAllowsChildren ,boolean filterIsActive) { super(root, asksAllowsChildren); this.filterIsActive = filterIsActive; }
public void activateFilter(boolean newValue) { filterIsActive = newValue; }
public boolean isActivatedFilter() { return filterIsActive; }
public Object getChild(Object parent, int index) { if (filterIsActive) { if (parent instanceof InvisibleNode) { return ((InvisibleNode)parent).getChildAt(index,filterIsActive); } } return ((TreeNode)parent).getChildAt(index); }
public int getChildCount(Object parent) { if (filterIsActive) { if (parent instanceof InvisibleNode) { return ((InvisibleNode)parent).getChildCount(filterIsActive); } } return ((TreeNode)parent).getChildCount(); }
}

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InvisibleNode.java
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/* (swing1.1) */
import java.util.*;import javax.swing.tree.*;
/** * @version 1.0 01/12/99 */public class InvisibleNode extends DefaultMutableTreeNode {
protected boolean isVisible;
public InvisibleNode() { this(null); }
public InvisibleNode(Object userObject) { this(userObject, true, true); }
public InvisibleNode(Object userObject, boolean allowsChildren , boolean isVisible) { super(userObject, allowsChildren); this.isVisible = isVisible; }
public TreeNode getChildAt(int index,boolean filterIsActive) { if (! filterIsActive) { return super.getChildAt(index); } if (children == null) { throw new ArrayIndexOutOfBoundsException("node has no children"); } int realIndex = -1; int visibleIndex = -1; Enumeration enum = children.elements(); while (enum.hasMoreElements()) { InvisibleNode node = (InvisibleNode)enum.nextElement(); if (node.isVisible()) { visibleIndex++; } realIndex++; if (visibleIndex == index) { return (TreeNode)children.elementAt(realIndex); } } throw new ArrayIndexOutOfBoundsException("index unmatched"); //return (TreeNode)children.elementAt(index); }
public int getChildCount(boolean filterIsActive) { if (! filterIsActive) { return super.getChildCount(); } if (children == null) { return 0; } int count = 0; Enumeration enum = children.elements(); while (enum.hasMoreElements()) { InvisibleNode node = (InvisibleNode)enum.nextElement(); if (node.isVisible()) { count++; } } return count; }
public void setVisible(boolean visible) { this.isVisible = visible; } public boolean isVisible() { return isVisible; }
}

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InvisibleNodeTreeExample.java
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/* (swing1.1) */
import java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.tree.*;import javax.swing.border.*;
/** * @version 1.0 01/12/99 */public class InvisibleNodeTreeExample extends JFrame { public InvisibleNodeTreeExample() { super("InvisibleNode TreeExample"); String[] strs = {"swing", // 0 "platf", // 1 "basic", // 2 "metal", // 3 "JTree"}; // 4 InvisibleNode[] nodes = new InvisibleNode[strs.length]; for (int i=0;i public static void main(String args[]) { InvisibleNodeTreeExample frame = new InvisibleNodeTreeExample(); frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) {System.exit(0);} }); frame.setSize(300, 180); frame.setVisible(true); }}

# posted by Miko @ 11:25 AM