icontreecellrenderer.java

来自「有关对pdf操作的代码」· Java 代码 · 共 50 行

/*
 * $Id: IconTreeCellRenderer.java 3117 2008-01-31 05:53:22Z xlv $
 *
 * Copyright 2007 Bruno Lowagie.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package com.lowagie.rups.view.icons;

import java.awt.Component;

import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;


/**
 * Renders the tree cells with the correct icon.
 */
public class IconTreeCellRenderer extends DefaultTreeCellRenderer {

	/** a serial version UID. */
	private static final long serialVersionUID = 6513462839504342074L;

	/**
	 * @see javax.swing.tree.DefaultTreeCellRenderer#getTreeCellRendererComponent(javax.swing.JTree, java.lang.Object, boolean, boolean, boolean, int, boolean)
	 */
	public Component getTreeCellRendererComponent(JTree tree, Object value,
			boolean selected, boolean expanded, boolean leaf, int row,
			boolean hasFocus) {
		super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
		if (value instanceof IconTreeNode) {
			IconTreeNode node = (IconTreeNode) value;
			setIcon(node.getIcon());
		}
		return this;
	}
}