java.lang.Object
- javafx.beans.binding.MapExpression<K,V>
- - javafx.beans.property.ReadOnlyMapProperty<K,V>
  - - javafx.beans.property.MapProperty<K,V>
    - - javafx.beans.property.MapPropertyBase<K,V>

Type Parameters:

K - the type of the key elements of the Map

V - the type of the value elements of the Map

All Implemented Interfaces:

Map<K,V>, Observable, Property<ObservableMap<K,V>>, ReadOnlyProperty<ObservableMap<K,V>>, ObservableMapValue<K,V>, ObservableObjectValue<ObservableMap<K,V>>, ObservableValue<ObservableMap<K,V>>, WritableMapValue<K,V>, WritableObjectValue<ObservableMap<K,V>>, WritableValue<ObservableMap<K,V>>, ObservableMap<K,V>

Direct Known Subclasses:

SimpleMapProperty
```
public abstract class MapPropertyBase<K,V>
extends MapProperty<K,V>
```
The class MapPropertyBase is the base class for a property wrapping an ObservableMap. It provides all the functionality required for a property except for the ReadOnlyProperty.getBean() and ReadOnlyProperty.getName() methods, which must be implemented by extending classes.

Since:

JavaFX 2.1

See Also:

ObservableMap, MapProperty

Property Summary

Properties
Type	Property	Description
`ReadOnlyBooleanProperty`	`empty`	A boolean property that is `true`, if the map is empty.
`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 extends Object,V extends Object>

Constructor Summary

Constructors
Constructor	Description
`MapPropertyBase()`	The Constructor of `MapPropertyBase`
`MapPropertyBase(ObservableMap<K,V> initialValue)`	The constructor of the `MapPropertyBase`.

Method Summary

Modifier and Type	Method	Description
`void`	`addListener(InvalidationListener listener)`	Adds an `InvalidationListener` which will be notified whenever the `Observable` becomes invalid.
`void`	`addListener(ChangeListener<? super ObservableMap<K,V>> listener)`	Adds a `ChangeListener` which will be notified whenever the value of the `ObservableValue` changes.
`void`	`addListener(MapChangeListener<? super K,? super V> listener)`	Add a listener to this observable map.
`void`	`bind(ObservableValue<? extends ObservableMap<K,V>> newObservable)`	Create a unidirection binding for this `Property`.
`ReadOnlyBooleanProperty`	`emptyProperty()`	A boolean property that is `true`, if the map is empty.
`protected void`	`fireValueChangedEvent()`	Sends notifications to all attached `InvalidationListeners`, `ChangeListeners`, and `MapChangeListener`.
`protected void`	`fireValueChangedEvent(MapChangeListener.Change<? extends K,? extends V> change)`	Sends notifications to all attached `InvalidationListeners`, `ChangeListeners`, and `MapChangeListener`.
`ObservableMap<K,V>`	`get()`	Get the wrapped value.
`protected void`	`invalidated()`	The method `invalidated()` can be overridden to receive invalidation notifications.
`boolean`	`isBound()`	Can be used to check, if a `Property` is bound.
`void`	`removeListener(InvalidationListener listener)`	Removes the given listener from the list of listeners, that are notified whenever the value of the `Observable` becomes invalid.
`void`	`removeListener(ChangeListener<? super ObservableMap<K,V>> listener)`	Removes the given listener from the list of listeners that are notified whenever the value of the `ObservableValue` changes.
`void`	`removeListener(MapChangeListener<? super K,? super V> listener)`	Tries to removed a listener from this observable map.
`void`	`set(ObservableMap<K,V> newValue)`	Set the wrapped value.
`ReadOnlyIntegerProperty`	`sizeProperty()`	An integer property that represents the size of the map.
`String`	`toString()`	Returns a string representation of this `MapPropertyBase` object.
`void`	`unbind()`	Remove the unidirectional binding for this `Property`.

Methods inherited from class javafx.beans.property.MapProperty
bindBidirectional, setValue, unbindBidirectional

Methods inherited from class javafx.beans.property.ReadOnlyMapProperty
bindContent, bindContentBidirectional, equals, hashCode, unbindContent, unbindContentBidirectional

Methods inherited from class javafx.beans.binding.MapExpression
asString, clear, containsKey, containsValue, entrySet, get, getSize, getValue, isEmpty, isEqualTo, isNotEqualTo, isNotNull, isNull, keySet, mapExpression, put, putAll, remove, size, valueAt, valueAt, values

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

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

Methods inherited from interface javafx.beans.property.ReadOnlyProperty
getBean, getName

Methods inherited from interface javafx.beans.value.WritableValue
getValue

- Property Detail
  - size
```
public ReadOnlyIntegerProperty sizeProperty
```
    Specified by:
    
    sizeProperty in class MapExpression<K,V>
    
    See Also:
    
    MapExpression.getSize()
  - empty
```
public ReadOnlyBooleanProperty emptyProperty
```
    Specified by:
    
    emptyProperty in class MapExpression<K,V>
    
    See Also:
    
    MapExpression.isEmpty()
- Constructor Detail
  - MapPropertyBase
```
public MapPropertyBase()
```
    The Constructor of MapPropertyBase
  - MapPropertyBase
```
public MapPropertyBase(ObservableMap<K,V> initialValue)
```
    The constructor of the MapPropertyBase.
    
    Parameters:
    
    initialValue - the initial value of the wrapped value
- Method Detail
  - sizeProperty
```
public ReadOnlyIntegerProperty sizeProperty()
```
    Description copied from class: MapExpression
    
    An integer property that represents the size of the map.
    
    Specified by:
    
    sizeProperty in class MapExpression<K,V>
    
    See Also:
    
    MapExpression.getSize()
  - emptyProperty
```
public ReadOnlyBooleanProperty emptyProperty()
```
    Description copied from class: MapExpression
    
    A boolean property that is true, if the map is empty.
    
    Specified by:
    
    emptyProperty in class MapExpression<K,V>
    
    See Also:
    
    MapExpression.isEmpty()
  - addListener
```
public void addListener(InvalidationListener listener)
```
    Description copied from interface: Observable
    
    Adds an InvalidationListener which will be notified whenever the Observable becomes invalid. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.
    Note that the same actual InvalidationListener instance may be safely registered for different Observables.
    The Observable stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakInvalidationListener avoid this situation.
    
    Parameters:
    
    listener - The listener to register
    
    See Also:
    
    Observable.removeListener(InvalidationListener)
  - removeListener
```
public void removeListener(InvalidationListener listener)
```
    Description copied from interface: Observable
    
    Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
    If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.
    
    Parameters:
    
    listener - The listener to remove
    
    See Also:
    
    Observable.addListener(InvalidationListener)
  - addListener
```
public void addListener(ChangeListener<? super ObservableMap<K,V>> listener)
```
    Description copied from interface: ObservableValue
    
    Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.
    Note that the same actual ChangeListener instance may be safely registered for different ObservableValues.
    The ObservableValue stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakChangeListener avoid this situation.
    
    Parameters:
    
    listener - The listener to register
    
    See Also:
    
    ObservableValue.removeListener(ChangeListener)
  - removeListener
```
public void removeListener(ChangeListener<? super ObservableMap<K,V>> listener)
```
    Description copied from interface: ObservableValue
    
    Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.
    If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.
    
    Parameters:
    
    listener - The listener to remove
    
    See Also:
    
    ObservableValue.addListener(ChangeListener)
  - addListener
```
public void addListener(MapChangeListener<? super K,? super V> listener)
```
    Description copied from interface: ObservableMap
    
    Add a listener to this observable map.
    
    Parameters:
    
    listener - the listener for listening to the list changes
  - removeListener
```
public void removeListener(MapChangeListener<? super K,? super V> listener)
```
    Description copied from interface: ObservableMap
    
    Tries to removed a listener from this observable map. If the listener is not attached to this map, nothing happens.
    
    Parameters:
    
    listener - a listener to remove
  - fireValueChangedEvent
```
protected void fireValueChangedEvent()
```
    Sends notifications to all attached InvalidationListeners, ChangeListeners, and MapChangeListener. This method is called when the value is changed, either manually by calling set(javafx.collections.ObservableMap) or in case of a bound property, if the binding becomes invalid.
  - fireValueChangedEvent
```
protected void fireValueChangedEvent(MapChangeListener.Change<? extends K,? extends V> change)
```
    Sends notifications to all attached InvalidationListeners, ChangeListeners, and MapChangeListener. This method is called when the content of the list changes.
    
    Parameters:
    
    change - the change that needs to be propagated
  - invalidated
```
protected void invalidated()
```
    The method invalidated() can be overridden to receive invalidation notifications. This is the preferred option in Objects defining the property, because it requires less memory. The default implementation is empty.
  - get
```
public ObservableMap<K,V> get()
```
    Description copied from interface: WritableObjectValue
    
    Get the wrapped value. This must be identical to the value returned from WritableValue.getValue().
    This method exists only to align WritableObjectValue API with WritableBooleanValue and subclasses of WritableNumberValue
    
    Returns:
    
    The current value
  - set
```
public void set(ObservableMap<K,V> newValue)
```
    Description copied from interface: WritableObjectValue
    
    Set the wrapped value. Should be equivalent to WritableValue.setValue(java.lang.Object)
    
    Parameters:
    
    newValue - The new value
    
    See Also:
    
    WritableObjectValue.get()
  - isBound
```
public boolean isBound()
```
    Description copied from interface: Property
    
    Can be used to check, if a Property is bound.
    
    Returns:
    
    true if the Property is bound, false otherwise
    
    See Also:
    
    Property.bind(javafx.beans.value.ObservableValue)
  - bind
```
public void bind(ObservableValue<? extends ObservableMap<K,V>> newObservable)
```
    Description copied from interface: Property
    
    Create a unidirection binding for this Property.
    Note that JavaFX has all the bind calls implemented through weak listeners. This means the bound property can be garbage collected and stopped from being updated.
    
    Parameters:
    
    newObservable - The observable this Property should be bound to.
  - unbind
```
public void unbind()
```
    Description copied from interface: Property
    
    Remove the unidirectional binding for this Property. If the Property is not bound, calling this method has no effect.
    
    See Also:
    
    Property.bind(javafx.beans.value.ObservableValue)
  - toString
```
public String toString()
```
    Returns a string representation of this MapPropertyBase object.
    
    Overrides:
    
    toString in class MapProperty<K,V>
    
    Returns:
    
    a string representation of this MapPropertyBase object.

Class MapPropertyBase<K,​V>

Property Summary

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class javafx.beans.property.MapProperty

Methods inherited from class javafx.beans.property.ReadOnlyMapProperty

Methods inherited from class javafx.beans.binding.MapExpression

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Methods inherited from interface javafx.beans.value.ObservableValue

Methods inherited from interface javafx.beans.property.ReadOnlyProperty

Methods inherited from interface javafx.beans.value.WritableValue

Property Detail

size

empty

Constructor Detail

MapPropertyBase

MapPropertyBase

Method Detail

sizeProperty

emptyProperty

addListener

removeListener

addListener

removeListener

addListener

removeListener

fireValueChangedEvent

fireValueChangedEvent

invalidated

get

set

isBound

bind

unbind

toString

Class MapPropertyBase<K,V>