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This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

// $Id: UMLTreeCellRenderer.java,v 1.31 2004/09/04 08:54:48 mvw Exp $
// Copyright (c) 1996-2004 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies.  This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason.  IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

package org.argouml.uml.ui;

import java.awt.Component;

import javax.swing.Icon;
import javax.swing.JLabel;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultMutableTreeNode;

import org.argouml.application.helpers.ResourceLoaderWrapper;
import org.argouml.i18n.Translator;
import org.argouml.model.ModelFacade;
import org.argouml.uml.diagram.activity.ui.UMLActivityDiagram;
import org.argouml.uml.diagram.collaboration.ui.UMLCollaborationDiagram;
import org.argouml.uml.diagram.deployment.ui.UMLDeploymentDiagram;
import org.argouml.uml.diagram.sequence.ui.UMLSequenceDiagram;
import org.argouml.uml.diagram.state.ui.UMLStateDiagram;
import org.argouml.uml.diagram.static_structure.ui.UMLClassDiagram;
import org.argouml.uml.diagram.ui.UMLDiagram;
import org.argouml.uml.diagram.use_case.ui.UMLUseCaseDiagram;

/**
 * UMTreeCellRenderer determines how the entries in the Navigationpane
 * and ToDoList will be represented graphically.
 *
 * 

In particular it makes decisions about the icons * to use in order to display a Navigationpane artifact depending on the kind * of object to be displayed. * * This class must be efficient as it is called many 1000's of times. */ public class UMLTreeCellRenderer extends DefaultTreeCellRenderer { private static final String BUNDLE = "UMLMenu"; // get localised strings once only private static String activity = Translator.localize(BUNDLE, "label.activity-diagram"); private static String sequence = Translator.localize(BUNDLE, "label.sequence-diagram"); private static String collaboration = Translator.localize(BUNDLE, "label.collaboration-diagram"); private static String deployment = Translator.localize(BUNDLE, "label.deployment-diagram"); private static String state = Translator.localize(BUNDLE, "label.state-chart-diagram"); private static String usecase = Translator.localize(BUNDLE, "label.usecase-diagram"); private static String classDiag = Translator.localize(BUNDLE, "label.class-diagram"); private static String name = Translator.localize(BUNDLE, "label.name"); private static String typeName = Translator.localize(BUNDLE, "label.type"); //////////////////////////////////////////////////////////////// // TreeCellRenderer implementation /** * @see javax.swing.tree.TreeCellRenderer#getTreeCellRendererComponent( * javax.swing.JTree, java.lang.Object, boolean, boolean, boolean, int, * boolean) */ public Component getTreeCellRendererComponent( JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) { if (value instanceof DefaultMutableTreeNode) { value = ((DefaultMutableTreeNode) value).getUserObject(); } Component r = super.getTreeCellRendererComponent( tree, value, sel, expanded, leaf, row, hasFocus); if (r instanceof JLabel) { JLabel lab = (JLabel) r; Icon icon = ResourceLoaderWrapper.getInstance().lookupIcon( value); if (icon != null) lab.setIcon(icon); // setting the tooltip String type = null; if (ModelFacade.isAModelElement(value)) { type = ModelFacade.getUMLClassName(value); } else if (value instanceof UMLDiagram) { if (value instanceof UMLActivityDiagram) type = activity; else if (value instanceof UMLSequenceDiagram) type = sequence; else if (value instanceof UMLCollaborationDiagram) type = collaboration; else if (value instanceof UMLDeploymentDiagram) type = deployment; else if (value instanceof UMLStateDiagram) type = state; else if (value instanceof UMLUseCaseDiagram) type = usecase; else if (value instanceof UMLClassDiagram) type = classDiag; } if (type != null) { StringBuffer buf = new StringBuffer(); buf.append(""); buf.append(name); buf.append(' '); buf.append(lab.getText()); buf.append("
"); buf.append(typeName); buf.append(' '); buf.append(type); lab.setToolTipText(buf.toString()); } else { lab.setToolTipText(lab.getText()); } } return r; } } /* end class UMLTreeCellRenderer */

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