📄 operatortreecellrenderer.java

📁 著名的开源仿真软件yale
💻 JAVA
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/* *  YALE - Yet Another Learning Environment *  Copyright (C) 2002, 2003 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa,  *          Katharina Morik, Oliver Ritthoff *      Artificial Intelligence Unit *      Computer Science Department *      University of Dortmund *      44221 Dortmund,  Germany *  email: yale@ls8.cs.uni-dortmund.de *  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.op.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. */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 (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>");	    // 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);	    }	    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());	    }	    	} else {	    mainLabel.setIcon(null);	    mainLabel.setText(value.toString());	}	if (selected) {	    mainLabel.setForeground(TEXT_SELECTED_COLOR);	} else {	    mainLabel.setForeground(TEXT_NON_SELECTED_COLOR);	}	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);    }}
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