fable.adt
Class Folder

java.lang.Object
  fable.adt.FableComponent
      fable.adt.Folder

All Implemented Interfaces:

FableContainer

public class Folder
extends FableComponent

This class represents the folder contains folders, feeds, and/or articles. Folder contains its description.

Author:

Wonsik Kim

Constructor Summary

Folder()
Constructs a new empty folder.

Method Summary

void	accept(FableVisitor v) Accept the visitor v to visit this.
void	acceptRecursive(FableVisitor v) Accept the visitor v to visit this, and recurse on children of this.
boolean	addChild(FableComponent fc) Add c as a child of this.
boolean	isSimilarTo(FableComponent fc) Returns true if this and fc are similar.
java.lang.String	toString() Returns string representation of this folder.

Methods inherited from class fable.adt.FableComponent

activate, addStructuralChangeListener, getChildren, getDate, getDescendants, getParent, getPosition, getTitle, isAncestorOf, moveDown, moveUp, removeAllListeners, removeChild, removeStructuralChangeListener, setParent, setPosition, setTitle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Folder

public Folder()

Constructs a new empty folder.

Effects:

construct a new Folder object.

Modifies:

this

Method Detail

isSimilarTo

public boolean isSimilarTo(FableComponent fc)

Returns true if this and fc are similar. In this case, similar means that two components are equals.

Specified by:

isSimilarTo in class FableComponent

Parameters:

fc - FableComponent object to compare.

Returns:

true if this and fc are similar.

toString

public java.lang.String toString()

Returns string representation of this folder.

Overrides:

toString in class java.lang.Object

Returns:

string representation of this folder.

addChild

public final boolean addChild(FableComponent fc)

Add c as a child of this. Returns true if c is successfully added as a child of this, otherwise false. Since Folder can only contain Folder and Feed, it will reject other components like Article.

Specified by:

addChild in interface FableContainer

Overrides:

addChild in class FableComponent

Parameters:

fc - A child to be added.

Returns:

true if c is successfully added. false otherwise.

Throws:

java.lang.NullPointerException - if fc is null.

Effects:

add c as a child of this if c is an instance of Folder or Feed, and this is not a children of c.

Modifies:

this.children

accept

public void accept(FableVisitor v)

Description copied from class: FableComponent

Accept the visitor v to visit this.

Specified by:

accept in class FableComponent

Parameters:

v - the visitor to visit this.

acceptRecursive

public void acceptRecursive(FableVisitor v)

Description copied from class: FableComponent

Accept the visitor v to visit this, and recurse on children of this.

Specified by:

acceptRecursive in class FableComponent

Parameters:

v - the visitor to visit this and decendants of this.