📄 operatortreecellrenderer.java

📁 一个很好的LIBSVM的JAVA源码。对于要研究和改进SVM算法的学者。可以参考。来自数据挖掘工具YALE工具包。
💻 JAVA
字号:
/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2001-2004
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: yale-team@lists.sourceforge.net
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License as 
 *  published by the Free Software Foundation; either version 2 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
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 *  USA.
 */
package edu.udo.cs.yale.gui;

import edu.udo.cs.yale.operator.Operator;
import edu.udo.cs.yale.operator.OperatorChain;
import edu.udo.cs.yale.operator.IllegalInputException;
import edu.udo.cs.yale.operator.IllegalNumberOfInnerOperatorsException;
import edu.udo.cs.yale.tools.OperatorDescription;
import edu.udo.cs.yale.tools.Tools;

import java.awt.Component;
import java.awt.Image;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.FlowLayout;
import javax.swing.*;
import javax.swing.tree.TreeCellRenderer;
import java.io.File;
import java.util.List;

/** A renderer for operator tree cells that displays the operator's icon, name, class, breakpoints and error
 *  hints.
 *  @version $Id: OperatorTreeCellRenderer.java,v 2.7 2004/08/27 11:57:33 ingomierswa Exp $
 */
public class OperatorTreeCellRenderer extends JPanel implements TreeCellRenderer {


    private static final Color SELECTED_COLOR          = UIManager.getColor("Tree.selectionBackground");
    private static final Color NON_SELECTED_COLOR      = UIManager.getColor("Tree.textBackground");
    private static final Color TEXT_SELECTED_COLOR     = UIManager.getColor("Tree.selectionForeground");
    private static final Color TEXT_NON_SELECTED_COLOR = UIManager.getColor("Tree.textForeground");
    private static final Color BORDER_SELECTED_COLOR   = UIManager.getColor("Tree.selectionBorderColor");

    private boolean hasFocus, isSelected;

    private JLabel mainLabel  = new JLabel();
    private JLabel breakpoint = new JLabel();
    private JLabel error      = new JLabel();

    public OperatorTreeCellRenderer() {
	mainLabel.setHorizontalAlignment(JLabel.LEFT);    
	mainLabel.setFont(getFont().deriveFont(Font.PLAIN));
	mainLabel.setBorder(BorderFactory.createEmptyBorder(0, 4, 0, 4));
	setLayout(new FlowLayout(FlowLayout.LEFT));
	setBackground(new java.awt.Color(0, 0, 0, 0));
	//breakpoint.setToolTipText("Indicates if a breakpoint is used");
	add(mainLabel);
	add(breakpoint);
	add(error);
    }

    public Component getTreeCellRendererComponent(JTree tree, 
						  Object value, 
						  boolean selected, 
						  boolean expanded, 
						  boolean leaf, 
						  int row, 
						  boolean hasFocus) {
	this.isSelected = selected;
	this.hasFocus   = hasFocus;


	if (selected) {
	    mainLabel.setForeground(TEXT_SELECTED_COLOR);
	} else {
	    mainLabel.setForeground(TEXT_NON_SELECTED_COLOR);
	}


	if (value instanceof Operator) {
	    Operator operator = (Operator)value;
	    Image img = operator.getOperatorDescription().getIcon();
	    if (img != null) mainLabel.setIcon(new ImageIcon(img));
	    else mainLabel.setIcon(null);
	    OperatorDescription descr = operator.getOperatorDescription();
	    mainLabel.setText("<html>"+operator.getName() + "<br><font size=-2>" + descr.getName()+"</font></html>");

	    mainLabel.setEnabled(operator.isEnabled());
	    if (!operator.isEnabled()) mainLabel.setForeground(Color.gray);

	    // ICONS

	    if ((operator.hasBreakpoint(Operator.BREAKPOINT_BEFORE)) || (operator.hasBreakpoint(Operator.BREAKPOINT_AFTER))) {
		breakpoint.setIcon(new ImageIcon(Tools.getResource("icons/icon_stop2.gif")));
	    } else {
		breakpoint.setIcon(null);
	    }
	    breakpoint.setEnabled(operator.isEnabled());

	    List errors = operator.getErrorList();
	    if (errors.size() > 0) {
 		error.setIcon(new ImageIcon(Tools.getResource("icons/icon_error.gif")));
		setToolTipText("Error: " + (String)errors.get(0));
	    } else {
 		error.setIcon(null);
		setToolTipText(descr.getDescription());
	    }
	    error.setEnabled(operator.isEnabled());

	    setEnabled(operator.isEnabled());	    
	} else {
	    mainLabel.setIcon(null);
	    mainLabel.setText(value.toString());
	    setEnabled(tree.isEnabled());
	}

	//setEnabled(tree.isEnabled());
	return this;
    }

    public void paint(Graphics g) {
	if (isSelected) {
	    g.setColor(SELECTED_COLOR);
	    g.fillRect(0, 0, getWidth(), getHeight());
	}

	if (hasFocus) {
	    g.setColor(BORDER_SELECTED_COLOR);
	    g.drawRect(0, 0, getWidth()-1, getHeight()-1);
	}
	super.paint(g);
    }
}
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -