/* $Id: UMLTreeCellRenderer.java 17881 2010-01-12 21:09:28Z linus $

  *****************************************************************************

  * Copyright (c) 2009 Contributors - see below

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

  * which accompanies this distribution, and is available at

  * http://www.eclipse.org/legal/epl-v10.html

  *

  * Contributors:

  *    tfmorris

  *****************************************************************************

  *

  * Some portions of this file was previously release using the BSD License:

  */

 // Copyright (c) 1996-2008 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.DefaultMutableTreeNode;

 import javax.swing.tree.DefaultTreeCellRenderer;

 import org.argouml.application.helpers.ResourceLoaderWrapper;

 import org.argouml.i18n.Translator;

 import org.argouml.model.Model;

 import org.argouml.uml.diagram.ui.UMLDiagram;

 /**

  * UMTreeCellRenderer determines how the entries in the Explorerpane

  * and ToDoList will be represented graphically.<p>

  *

  * In particular it makes decisions about the icons to use,

  * in order to display an Explorerpane artifact depending on the kind

  * of object to be displayed.<p>

  *

  * This class must be efficient as it is called many 1000's of times.

  */

 public class UMLTreeCellRenderer extends DefaultTreeCellRenderer {

     // get localised strings once only

     private static String name = Translator.localize("label.name");

     private static String typeName = Translator.localize("label.type");

     ////////////////////////////////////////////////////////////////

     // TreeCellRenderer implementation

     /*

      * @see javax.swing.tree.TreeCellRenderer#getTreeCellRendererComponent(

      *      javax.swing.JTree, java.lang.Object, boolean, boolean, boolean, int,

      *      boolean)

      */

     @Override

     public Component getTreeCellRendererComponent(

         JTree tree,

         Object value,

         boolean sel,

         boolean expanded,

         boolean leaf,

         int row,

         boolean hasFocusParam) {

         if (value instanceof DefaultMutableTreeNode) {

             value = ((DefaultMutableTreeNode) value).getUserObject();

         }

         Component r =

             super.getTreeCellRendererComponent(

                 tree,

                 value,

                 sel,

                 expanded,

                 leaf,

                 row,

                 hasFocusParam);

         if (value != null && r instanceof JLabel) {

             JLabel lab = (JLabel) r;

             // setting the icon

             Icon icon = ResourceLoaderWrapper.getInstance().lookupIcon(value);

             if (icon != null) {

                 lab.setIcon(icon);

             }

             // setting the tooltip to type and name

             String type = null;

             if (Model.getFacade().isAModelElement(value)) {

                 type = Model.getFacade().getUMLClassName(value);

             } else if (value instanceof UMLDiagram) {

                 type = ((UMLDiagram) value).getLabelName();

             }

             if (type != null) {

                 StringBuffer buf = new StringBuffer();

                 buf.append("<html>");

                 buf.append(name);

                 buf.append(' ');

                 buf.append(lab.getText());

                 buf.append("<br>");

                 buf.append(typeName);

                 buf.append(' ');

                 buf.append(type);

                 lab.setToolTipText(buf.toString());

             } else {

                 lab.setToolTipText(lab.getText());

             }

         }

         return r;

     }

 }