filetree.java

一个网络上传下载器

/*
 * FileTree.java
 *
 * Created on 2007��11��23��, ����1:44
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */
package TreeList;


import javax.swing.JTree;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.TreePath;


/**
 This class is to show the treelist of folder
 @author Liu Yuyang
 */
public class FileTree extends JTree {

    private String currentNodePath;
    static final long serialVersionUID = 0;

    public FileTree() {
        setModel(new FileSystemModel(new FolderNode("D:\\project")));
        this.setCellRenderer(new FolderRenderer());
        addTreeSelectionListener(new TreeSelectionListener() {

            public void valueChanged(TreeSelectionEvent tse) {
            }
        });
        this.setSelectionRow(0);
    }

    public FileTree(String folderPath) {
        setModel(new FileSystemModel(new FolderNode(folderPath)));
        this.setCellRenderer(new FolderRenderer());
        addTreeSelectionListener(new TreeSelectionListener() {

            public void valueChanged(TreeSelectionEvent tse) {
            }
        });
        this.setSelectionRow(0);
    }

    @Override
    public void fireValueChanged(TreeSelectionEvent tse) {

        TreePath tp = tse.getNewLeadSelectionPath();

        //get the selected node
        Object o = tp.getLastPathComponent();

        this.currentNodePath = ((FolderNode) o).getNodePath();
        //System.out.println(currentNodePath);
    }

    @Override
    public void fireTreeCollapsed(TreePath path) {
        super.fireTreeCollapsed(path);
        TreePath curpath = getSelectionPath();

        if (path.isDescendant(curpath)) {
            setSelectionPath(path);
        }
    }

    @Override
    public void fireTreeWillExpand(TreePath path) {
       // System.out.println("Path will expand is " + path);
    }

    @Override
    public void fireTreeWillCollapse(TreePath path) {
        //System.out.println("Path will collapse is " + path);
    }
    
    public String getCurrentNodePath()
    {
        return this.currentNodePath;
    }

    class ExpansionListener implements TreeExpansionListener {

        FileTree tree;

        public ExpansionListener(FileTree ft) {
            tree = ft;
        }

        public void treeCollapsed(TreeExpansionEvent tee) {
        }
        public void treeExpanded(TreeExpansionEvent tee) {
        }
    }
}