treerenderer.java

来自「基于jxta的P2P框架的系统」· Java 代码 · 共 61 行

package connex.session.desktop;

import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.ImageIcon;
import java.awt.Component;
import javax.swing.JTree;



class TreeRenderer extends DefaultTreeCellRenderer {

    final ImageIcon rootIcon = new ImageIcon("resources/images/cube3.png");

    public TreeRenderer() {

    }

    public Component getTreeCellRendererComponent(
            JTree tree,
            Object value,
            boolean sel,
            boolean expanded,
            boolean leaf,
            int row,
            boolean hasFocus) {

        super.getTreeCellRendererComponent(
                tree, value, sel,
                expanded, leaf, row,
                hasFocus);

        if (value instanceof UserNode) {

            UserNode user = (UserNode)value;

            setIcon(user.getImage() );
            setToolTipText(user.getName() );


        } else {
            setIcon(rootIcon);
            //setToolTipText(null);
        }

        return this;
    }

    private UserNode getUser(Object value) {

        UserNode node1 = (UserNode) value;
        UserNode node = null;
        try {
            node = (UserNode) node1;
        } catch (Exception ex) {
        }

        return node;
    }

}