package ca.ubc.cs.spl.aspectPatterns.examples.composite.java;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.aspectPatterns.
*
* For more details and the latest version of this code, please see:
* http://www.cs.ubc.ca/labs/spl/projects/aodps.html
*
* Contributor(s):
*/
import java.util.LinkedList;
/**
* Implements a <i>Composite</i>. Children are stored in a linked list.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.1, 02/06/04
*
* @see File
*/
public class Directory implements FileSystemComponent {
/**
* stores the children for this Directory (files and subdirectories)
*/
protected LinkedList children = new LinkedList(); // Component interface
/**
* stores the name of this Directory
*/
protected String name;
/**
* Creates a new Directory with a given name
*
* @param name the name for the new Directory object
*/
public Directory(String name) {
this.name = name;
}
/**
* Overwrites the <code>toString()</code> method from <code>Object</code>
* to print information about this Directory
*/
public String toString() {
return ("Directory: "+name);
}
/**
* Adds a child to the component
*
* @param component the child to add
*/
public void add(FileSystemComponent component) {
this.children.add(component);
}
/**
* Removes a child from the component
*
* @param component the child to remove
*/
public void remove(FileSystemComponent component) {
this.children.remove(component);
}
/**
* Returns a child of the Directory at the given position
*
* @param index the position of the child
*/
public FileSystemComponent getChild(int index) {
return (FileSystemComponent) children.get(index);
}
/**
* Returns the number of chilren this Directory has
*
* @returns the number of children of this Directory
*/
public int getChildCount() {
return children.size();
}
/**
* Returns the size of this Directory. For simplicity, we define that only
* files have a tangible size, so this method returns 0.
*
* @return the size of the component (on disk)
*/
public int getSize() {
return 0;
}
}