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JIDE Common Layer (Professional Swing Components)

There is a newer version: 3.6.18

/*
 * @(#)MutableTreeNodeEx.java 12/16/2009
 *
 * Copyright 2002 - 2009 JIDE Software Inc. All rights reserved.
 */

package com.jidesoft.dialog;

import javax.swing.tree.DefaultMutableTreeNode;

/**
 * This is a subclass of DefaultMutableTreeNode to have disable feature.
 */
class MutableTreeNodeEx extends DefaultMutableTreeNode {
    private static final long serialVersionUID = 8410814900789441894L;
    protected boolean _enabled = true;

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

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

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

    public MutableTreeNodeEx(Object userObject, boolean allowsChildren, boolean enabled) {
        super(userObject, allowsChildren);
        setEnabled(enabled);
    }

    /**
     * Override so that disabled node looks have no child.
     * @return the count of the node's children.
     */
    public int getChildCount() {
        if (isEnabled()) {
            return super.getChildCount();
        }
        else {
            return 0;
        }
    }

    /**
     * Set the flag indicating if the node is enabled.
     * 
     * By default, the value is true just like the other normal DefaultMutableTreeNode.
     *
     * @param enabled the flag
     */
    public void setEnabled(boolean enabled) {
        _enabled = enabled;
    }

    /**
     * Get the flag indicating if the node is enabled.
     *
     * @see #setEnabled(boolean)
     * @return true if the node is enabled. Otherwise false.
     */
    public boolean isEnabled() {
        return _enabled;
    }
}