disablednode.java

Java中Swing界面库中几个类使用的例子

// DisabledNode.java
/* (swing1.1.1beta2) */ 
package jp.gr.java_conf.tame.swing.tree;

import javax.swing.tree.*;


/**
 * @version 1.0 04/27/99
 */
public class DisabledNode extends DefaultMutableTreeNode  {
  protected boolean enabled;

  public DisabledNode() {
    this(null, true, true);
  }

  public DisabledNode(Object userObject) {
    this(userObject, true, true);
  }

  public DisabledNode(Object userObject, boolean allowsChildren) {
    this(userObject, allowsChildren, true);
  }

  public DisabledNode(Object userObject, boolean allowsChildren
  		         , boolean enabled) {
    super(userObject, allowsChildren);
    this.enabled = enabled;
  }
    
  public int getChildCount() {
    if (enabled) {
      return super.getChildCount();
    } else {
      return 0;
    }
  }
  
  public boolean isLeaf() {
    return (super.getChildCount() == 0);
  }
    
  public void setEnabled(boolean enabled) {
    this.enabled = enabled;
  }
    
  public boolean isEnabled() {
    return enabled;
  }
}