Type Parameters:

K - the type of the key elements

V - the type of the value elements

All Implemented Interfaces:

Map<K,V>, Observable, ObservableMapValue<K,V>, ObservableObjectValue<ObservableMap<K,V>>, ObservableValue<ObservableMap<K,V>>, ObservableMap<K,V>

Direct Known Subclasses:

MapBinding, ReadOnlyMapProperty

public abstract class MapExpression<K,V>
extends Object
implements ObservableMapValue<K,V>

Since:

JavaFX 2.1

• Property Summary

  All Methods

  Type	Property and Description
  abstract ReadOnlyBooleanProperty	empty A boolean property that is true, if the map is empty.
  abstract ReadOnlyIntegerProperty	size An integer property that represents the size of the map.

• Nested Class Summary

  • Nested classes/interfaces inherited from interface java.util.Map

    Map.Entry<K,V>

• Constructor Summary

  Constructors

  Constructor and Description
  MapExpression ()

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  StringBinding	asString () Creates a StringBinding that holds the value of the MapExpression turned into a String.
  void	clear ()
  boolean	containsKey (Object obj)
  boolean	containsValue (Object obj)
  abstract ReadOnlyBooleanProperty	emptyProperty () A boolean property that is true, if the map is empty.
  Set<Map.Entry<K,V>>	entrySet ()
  V	get (Object key)
  int	getSize () The size of the map
  ObservableMap<K,V>	getValue () Returns the current value of this ObservableValue
  boolean	isEmpty () Gets the value of the property empty.
  BooleanBinding	isEqualTo (ObservableMap<?,?> other) Creates a new BooleanBinding that holds true if this map is equal to another ObservableMap.
  BooleanBinding	isNotEqualTo (ObservableMap<?,?> other) Creates a new BooleanBinding that holds true if this map is not equal to another ObservableMap.
  BooleanBinding	isNotNull () Creates a new BooleanBinding that holds true if the wrapped map is not null.
  BooleanBinding	isNull () Creates a new BooleanBinding that holds true if the wrapped map is null.
  Set<K>	keySet ()
  static <K,V> MapExpression<K,V>	mapExpression (ObservableMapValue<K,V> value) Returns a MapExpression that wraps a ObservableMapValue.
  V	put (K key, V value)
  void	putAll (Map<? extends K,? extends V> elements)
  V	remove (Object obj)
  int	size ()
  abstract ReadOnlyIntegerProperty	sizeProperty () An integer property that represents the size of the map.
  ObjectBinding<V>	valueAt (K key) Creates a new ObjectBinding that contains the mapping of the specified key.
  ObjectBinding<V>	valueAt (ObservableValue<K> key) Creates a new ObjectBinding that contains the mapping of the specified key.
  Collection<V>	values ()

  • Methods inherited from class java.lang.Object

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

  • Methods inherited from interface javafx.beans.value.ObservableObjectValue

    get

  • Methods inherited from interface javafx.beans.value.ObservableValue

    addListener, removeListener

  • Methods inherited from interface javafx.beans.Observable

    addListener, removeListener

  • Methods inherited from interface javafx.collections.ObservableMap

    addListener, removeListener

  • Methods inherited from interface java.util.Map

    compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

• Property Detail

  • size

    public abstract ReadOnlyIntegerProperty sizeProperty

    An integer property that represents the size of the map.

    See Also:

    getSize()

  • empty

    public abstract ReadOnlyBooleanProperty emptyProperty

    A boolean property that is true, if the map is empty.

    See Also:

    isEmpty()

• Constructor Detail

  • MapExpression

    public MapExpression()

• Method Detail

  • getValue

    public ObservableMap<K,V> getValue()

    Description copied from interface: ObservableValue
    Returns the current value of this ObservableValue

    Specified by:

    getValue in interface ObservableValue<ObservableMap<K,V>>

    Returns:

    The current value

  • mapExpression

    public static <K,V> MapExpression<K,V> mapExpression(ObservableMapValue<K,V> value)

    Returns a MapExpression that wraps a ObservableMapValue. If the ObservableMapValue is already a MapExpression, it will be returned. Otherwise a new MapBinding is created that is bound to the ObservableMapValue.

    Parameters:

    value - The source ObservableMapValue

    Returns:

    A MapExpression that wraps the ObservableMapValue if necessary

    Throws:

    NullPointerException - if value is null

  • getSize

    public int getSize()

    The size of the map

  • sizeProperty

    public abstract ReadOnlyIntegerProperty sizeProperty()

    An integer property that represents the size of the map.

    See Also:

    getSize()

  • emptyProperty

    public abstract ReadOnlyBooleanProperty emptyProperty()

    A boolean property that is true, if the map is empty.

    See Also:

    isEmpty()

  • valueAt

    public ObjectBinding<V> valueAt(K key)

    Creates a new ObjectBinding that contains the mapping of the specified key.

    Parameters:

    key - the key of the mapping

    Returns:

    the ObjectBinding

  • valueAt

    public ObjectBinding<V> valueAt(ObservableValue<K> key)

    Creates a new ObjectBinding that contains the mapping of the specified key.

    Parameters:

    key - the key of the mapping

    Returns:

    the ObjectBinding

    Throws:

    NullPointerException - if key is null

  • isEqualTo

    public BooleanBinding isEqualTo(ObservableMap<?,?> other)

    Creates a new BooleanBinding that holds true if this map is equal to another ObservableMap.

    Parameters:

    other - the other ObservableMap

    Returns:

    the new BooleanBinding

    Throws:

    NullPointerException - if other is null

  • isNotEqualTo

    public BooleanBinding isNotEqualTo(ObservableMap<?,?> other)

    Creates a new BooleanBinding that holds true if this map is not equal to another ObservableMap.

    Parameters:

    other - the other ObservableMap

    Returns:

    the new BooleanBinding

    Throws:

    NullPointerException - if other is null

  • isNull

    public BooleanBinding isNull()

    Creates a new BooleanBinding that holds true if the wrapped map is null.

    Returns:

    the new BooleanBinding

  • isNotNull

    public BooleanBinding isNotNull()

    Creates a new BooleanBinding that holds true if the wrapped map is not null.

    Returns:

    the new BooleanBinding

  • asString

    public StringBinding asString()

    Creates a StringBinding that holds the value of the MapExpression turned into a String. If the value of this MapExpression changes, the value of the StringBinding will be updated automatically.

    Returns:

    the new StringBinding

  • size

    public int size()

    Specified by:

    size in interface Map<K,V>

  • isEmpty

    public boolean isEmpty()

    Gets the value of the property empty.

    Specified by:

    isEmpty in interface Map<K,V>

    Property description:

    A boolean property that is true, if the map is empty.

  • containsKey

    public boolean containsKey(Object obj)

    Specified by:

    containsKey in interface Map<K,V>

  • containsValue

    public boolean containsValue(Object obj)

    Specified by:

    containsValue in interface Map<K,V>

  • put

    public V put(K key,
     V value)

    Specified by:

    put in interface Map<K,V>

  • remove

    public V remove(Object obj)

    Specified by:

    remove in interface Map<K,V>

  • putAll

    public void putAll(Map<? extends K,? extends V> elements)

    Specified by:

    putAll in interface Map<K,V>

  • clear

    public void clear()

    Specified by:

    clear in interface Map<K,V>

  • keySet

    public Set<K> keySet()

    Specified by:

    keySet in interface Map<K,V>

  • values

    public Collection<V> values()

    Specified by:

    values in interface Map<K,V>

  • entrySet

    public Set<Map.Entry<K,V>> entrySet()

    Specified by:

    entrySet in interface Map<K,V>

  • get

    public V get(Object key)

    Specified by:

    get in interface Map<K,V>