/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.tools;

import java.awt.BorderLayout;
import java.awt.Component;

import javax.swing.JPanel;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreePath;

/**
 * This is the combined renderer for the check tree.
 * 
 * @author Santhosh Kumar, Ingo Mierswa
 *          16:58:56 ingomierswa Exp $
 */
public class ExtendedCheckTreeCellRenderer extends JPanel implements
		TreeCellRenderer {

	private static final long serialVersionUID = -2532264318689978630L;

	private ExtendedCheckTreeSelectionModel selectionModel;

	private TreeCellRenderer delegate;

	private ExtendedTriStateCheckBox checkBox = new ExtendedTriStateCheckBox();

	public ExtendedCheckTreeCellRenderer(TreeCellRenderer delegate, ExtendedCheckTreeSelectionModel selectionModel) {
		this.delegate = delegate;
		this.selectionModel = selectionModel;
		setLayout(new BorderLayout());
		setOpaque(false);
		checkBox.setOpaque(false);
	}

	public java.awt.Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf,	int row, boolean hasFocus) {
		Component renderer = delegate.getTreeCellRendererComponent(tree, value,	selected, expanded, leaf, row, hasFocus);
		((DefaultTreeCellRenderer) renderer).setLeafIcon(null);
		((DefaultTreeCellRenderer) renderer).setIcon(null);
		((DefaultTreeCellRenderer) renderer).setOpenIcon(null);
		((DefaultTreeCellRenderer) renderer).setClosedIcon(null);

		TreePath path = tree.getPathForRow(row);
		if (path != null) {
			if (selectionModel.isPathSelected(path, true))
				checkBox.setState(Boolean.TRUE);
			else
				checkBox.setState(selectionModel.isPartiallySelected(path) ? null : Boolean.FALSE);
		}
		removeAll();
		add(checkBox, BorderLayout.WEST);
		add(renderer, BorderLayout.CENTER);
		return this;
	}
}