org.jhotdraw.draw
Class AttributeKey<T>

java.lang.Object
  org.jhotdraw.draw.AttributeKey<T>

public class AttributeKey<T>
extends java.lang.Object

Provides typesafe getter and setter for a Figure attribute. An AttributeKey has a name, a type and a default value. The default value is returned by Figure.getAttribute, if a Figure does not have an attribute of the specified key.

Constructor Summary

AttributeKey(java.lang.String key)
Creates a new instance.

AttributeKey(java.lang.String key, T defaultValue)

AttributeKey(java.lang.String key, T defaultValue, boolean isNullValueAllowed)

Method Summary

void	basicSet(Figure f, T value)
boolean	equals(java.lang.Object o)
T	get(Figure f)
T	getDefaultValue()
java.lang.String	getKey()
int	hashCode()
boolean	isAssignable(java.lang.Object value)
boolean	isNullValueAllowed()
static void	main(java.lang.String[] args)
void	set(Figure f, T value)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AttributeKey

public AttributeKey(java.lang.String key)

Creates a new instance.

AttributeKey

public AttributeKey(java.lang.String key,
                    T defaultValue)

AttributeKey

public AttributeKey(java.lang.String key,
                    T defaultValue,
                    boolean isNullValueAllowed)

Method Detail

getKey

public java.lang.String getKey()

getDefaultValue

public T getDefaultValue()

get

public T get(Figure f)

set

public void set(Figure f,
                T value)

basicSet

public void basicSet(Figure f,
                     T value)

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

isNullValueAllowed

public boolean isNullValueAllowed()

main

public static void main(java.lang.String[] args)

isAssignable

public boolean isAssignable(java.lang.Object value)