Using animation as icon for JTree node

Question

Hi,
I am using a custom tree cell renderer. I have a label in the renderer, the label have gif Image Icon, but the problem is it is not getting animated. But when I use a JLabel with gif icon some where else it is working fine, but it is not working for tree node.
package com.gopi.utilities.gui;
import java.awt.Color;
import java.awt.Component;
import java.awt.GridBagConstraints;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellRenderer;
import com.gopi.remfilebrowser.gui.GUIUtil;
import com.gopi.remfilebrowser.util.FileBrowserConstants;
public class CustomTreeCellRenderer implements TreeCellRenderer
     private JPanel panel;
     private JLabel label;
     private TreeCellRenderer defaultRenderer;
     public CustomTreeCellRenderer()
          super();
          panel = GUIUtil.createGridBagPanel();
          label = new JLabel();
          label.setHorizontalAlignment(JLabel.LEFT);
          System.out.println("New");
          GridBagConstraints gc = new GridBagConstraints();
          GUIUtil.fillComponent(panel,label);
          defaultRenderer = new DefaultTreeCellRenderer();
     public Component getTreeCellRendererComponent(JTree tree, Object value,
                 boolean sel,
                 boolean expanded,
                 boolean leaf, int row,
                 boolean hasFocus)
          if(value instanceof NewAbstractTreeNode)
               NewAbstractTreeNode node = (NewAbstractTreeNode) value;
               System.out.println("dr");
               label.setText(value.toString());
               label.setIcon(ImageLoader.getInstance().getIcon(node.getIconKey()));
               if(hasFocus && sel)
                    panel.setBackground(FileBrowserConstants.TREE_NODE_SELECTED_COLOR);
               else if(sel)
                    panel.setBackground(FileBrowserConstants.TREE_NODE_UNSELECTED_COLOR);
               else
                    panel.setBackground(Color.white);
               return panel;
          return defaultRenderer.getTreeCellRendererComponent(tree,value,sel,expanded,leaf,row,hasFocus);
}

Answer 1

JLabels using ImageIcons are designed to display the icon as is, including animation and all.
A CellRenderer only paints the Icon once, when the cell is painted. Much ike a rubber stamp of the JComponent. Hence, its not designed to do the animation and all.
If you really want it, you can probably use MediaTracker and a Timer to do your animation scheduling. Might not be very pretty code though
ICE