jefdirtreenode.java

来自「JavaExplorer是一个独立于平台的浏览器」· Java 代码 · 共 231 行

/**
  * File and FTP Explorer
  * Copyright 2002
  * BOESCH Vincent
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
  * of the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
package javaexplorer.gui.treenode.xfile;

import java.util.*;

import javaexplorer.model.*;

import javaexplorer.util.filter.DirectoryFilter;

import javax.swing.tree.*;


public class JEFDirTreeNode extends AbstractEFTreeNode {
    private static DirectoryFilter _df = new DirectoryFilter();
    private Vector _lstChild = new Vector(5, 5);
    private boolean exploreDone = false;

    /**
     *  Constructeur objet JEFDirTreeNode
     */
    public JEFDirTreeNode() {
    }

    /**
     *  Constructeur objet JEFDirTreeNode
     *
     *@param  ef  Description of the Parameter
     */
    public JEFDirTreeNode(XFile ef) {
        this(ef, true);
    }

    /**
     *  Constructor for the JZipTreeNode object
     *
     *@param  ef       Description of the Parameter
     *@param  explore  Description of the Parameter
     */
    public JEFDirTreeNode(XFile ef, boolean explore) {
        try {
            _ef = ef;

            if (explore) {
                makeChildrenNode(false);
            }
        } catch (Exception e) {
            javaexplorer.util.Log.addError(e);
        }
    }

    /**
     *  Adds a feature to the Child attribute
     *  of the JZipTreeNode object
     *
     *@param  e_ztn  The feature to be added
     *      to the Child attribute
     */
    public void addChild(JEFDirTreeNode e_ztn) {
        _lstChild.addElement(e_ztn);
    }

    /**
     *  Description of the Method
     *
     *@return    Description of the Returned
     *      Value
     */
    public Enumeration children() {
        if (!exploreDone) {
            makeChildrenNode(false);
        }

        return _lstChild.elements();
    }

    /**
     *  Gets the AllowsChildren attribute of
     *  the JZipTreeNode object
     *
     *@return    The AllowsChildren value
     */
    public boolean getAllowsChildren() {
        return true;
    }

    /**
     *  Gets the ChildAt attribute of the JZipTreeNode
     *  object
     *
     *@param  childIndex  Description of Parameter
     *@return             The ChildAt value
     */
    public TreeNode getChildAt(int childIndex) {
        if (!exploreDone) {
            makeChildrenNode(false);
        }

        return (JEFDirTreeNode) _lstChild.elementAt(childIndex);
    }

    /**
     *  Gets the ChildCount attribute of the
     *  JZipTreeNode object
     *
     *@return    The ChildCount value
     */
    public int getChildCount() {
        if (!exploreDone) {
            makeChildrenNode(false);
        }

        return _lstChild.size();
    }

    /**
     *  Gets the Index attribute of the JZipTreeNode
     *  object
     *
     *@param  node  Description of Parameter
     *@return       The Index value
     */
    public int getIndex(TreeNode node) {
        if (!exploreDone) {
            makeChildrenNode(false);
        }

        return _lstChild.indexOf(node);
    }

    /**
     *  Gets the Parent attribute of the JZipTreeNode
     *  object
     *
     *@return    The Parent value
     */
    public TreeNode getParent() {
        XFile ePar = _ef.getXParent();

        if (ePar == null) {
            return null;
        }

        return new JEFDirTreeNode(ePar, false);
    }

    /**
     *  Gets the Leaf attribute of the JZipTreeNode
     *  object
     *
     *@return    The Leaf value
     */
    public boolean isLeaf() {
        return false;
    }

    /**
     *  Description de la methode
     *
     *@param  explore  Description of the Parameter
     */
    private void makeChildrenNode(boolean explore) {
        XFile[] eFiles = _ef.listXFiles(_df);

        if (eFiles != null) {
            for (int i = 0; i < eFiles.length; i++) {
                addChild(new JEFDirTreeNode(eFiles[i], explore));
            }
        }

        exploreDone = true;
    }

    /**
     *  Description de la methode
     */
    public void refreshChildren() {
        _lstChild.removeAllElements();
        _ef.refreshChildren();        
        makeChildrenNode(false);
    }

    /**
     *  Sets the exploreDone attribute of the
     *  JEFDirTreeNode object
     *
     *@param  done  The new exploreDone value
     */
    public void setExploreDone(boolean done) {
        exploreDone = done;
    }

    /**
     *  Description of the Method
     *
     *@return    Description of the Returned
     *      Value
     */
    public String toString() {
        if (_ef == null) {
            return "Null";
        }

        if (_ef.getXParent() == null) {
            return _ef.toString();
        }

        return _ef.getName();
    }
    
    /**
     * M閠hode permettant de renvoyer le noeud correspondant au XFile
     * n閏essitant un rafraichissement
     * Cette m閠hode n'explore que les noeuds d閖