com.androidplot.util

Class LayerHash<KeyType,ValueType>

java.lang.Object

com.androidplot.util.LayerHash<KeyType,ValueType>

All Implemented Interfaces:

Layerable<KeyType>

public class LayerHash<KeyType,ValueType>
extends java.lang.Object
implements Layerable<KeyType>

An implementation of Layerable. Provides fast element retrieval via hash key in addition to mutable ordering (z indexing) of elements.

Constructor Summary

Constructors

Constructor and Description
LayerHash()

Method Summary

Modifier and Type	Method and Description
void	addToBottom(KeyType key, ValueType value) If key already exists within the structure, it's value is replaced with the new value and it's existing order is maintained.
void	addToTop(KeyType key, ValueType value) If key already exists within the structure, it's value is replaced with the new value and it's existing order is maintained.
java.util.List<KeyType>	elements()
ValueType	get(KeyType key)
ValueType	getAbove(KeyType key)
ValueType	getBeneath(KeyType key)
ValueType	getBottom()
java.util.List<KeyType>	getKeysAsList()
ValueType	getTop()
java.util.List<KeyType>	keys()
boolean	moveAbove(KeyType objectToMove, KeyType reference) Move above the specified element
boolean	moveBeneath(KeyType objectToMove, KeyType reference) Move beneath the specified element
boolean	moveDown(KeyType key) Move down by one element
boolean	moveToBottom(KeyType key) Move beneath all other elements
boolean	moveToTop(KeyType element) Move above all other elements
boolean	moveUp(KeyType key) Move up by one element
boolean	remove(KeyType key)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

LayerHash

public LayerHash()

Method Detail

size

public int size()

get

public ValueType get(KeyType key)

getKeysAsList

public java.util.List<KeyType> getKeysAsList()

addToTop

public void addToTop(KeyType key,
                     ValueType value)

If key already exists within the structure, it's value is replaced with the new value and it's existing order is maintained.

Parameters:

key -

value -

addToBottom

public void addToBottom(KeyType key,
                        ValueType value)

If key already exists within the structure, it's value is replaced with the new value and it's existing order is maintained.

Parameters:

key -

value -

moveToTop

public boolean moveToTop(KeyType element)

Description copied from interface: Layerable

Move above all other elements

Specified by:

moveToTop in interface Layerable<KeyType>

Returns:

moveAbove

public boolean moveAbove(KeyType objectToMove,
                         KeyType reference)

Description copied from interface: Layerable

Move above the specified element

Specified by:

moveAbove in interface Layerable<KeyType>

Returns:

moveBeneath

public boolean moveBeneath(KeyType objectToMove,
                           KeyType reference)

Description copied from interface: Layerable

Move beneath the specified element

Specified by:

moveBeneath in interface Layerable<KeyType>

Returns:

moveToBottom

public boolean moveToBottom(KeyType key)

Description copied from interface: Layerable

Move beneath all other elements

Specified by:

moveToBottom in interface Layerable<KeyType>

Returns:

moveUp

public boolean moveUp(KeyType key)

Description copied from interface: Layerable

Move up by one element

Specified by:

moveUp in interface Layerable<KeyType>

Returns:

moveDown

public boolean moveDown(KeyType key)

Description copied from interface: Layerable

Move down by one element

Specified by:

moveDown in interface Layerable<KeyType>

Returns:

elements

public java.util.List<KeyType> elements()

Specified by:

elements in interface Layerable<KeyType>

keys

public java.util.List<KeyType> keys()

Returns:

Ordered list of keys.

remove

public boolean remove(KeyType key)

getTop

public ValueType getTop()

getBottom

public ValueType getBottom()

getAbove

public ValueType getAbove(KeyType key)

getBeneath

public ValueType getBeneath(KeyType key)