groovy.util
[Java] Enum ObservableSet.ChangeType
java.lang.Object
groovy.util.ObservableSet.ChangeType
public enum ObservableSet.ChangeType
newValue
public static final Object newValue
-
oldValue
public static final Object oldValue
- Set decorator that will trigger PropertyChangeEvents when a value changes.
An optional Closure may be specified and will work as a filter, if it returns true the property
will trigger an event (if the value indeed changed), otherwise it won't. The Closure may receive
1 or 2 parameters, the single one being the value, the other one both the key and value, for
example:
// skip all properties whose value is a closure
def set = new ObservableSet( {!(it instanceof Closure)} )
<p/>
// skip all properties whose name matches a regex
def set = new ObservableSet( { name, value -> !(name =˜ /[A-Z+]/) } )
The current implementation will trigger specialized events in the following scenarios, you need
not register a different listener as those events extend from PropertyChangeEvent
- ObservableSet.ElementAddedEvent - a new element is added to the set
- ObservableSet.ElementRemovedEvent - an element is removed from the set
- ObservableSet.ElementUpdatedEvent - an element changes value (same as regular
PropertyChangeEvent)
- ObservableSet.ElementClearedEvent - all elements have been removed from the list
- ObservableSet.MultiElementAddedEvent - triggered by calling set.addAll()
- ObservableSet.MultiElementRemovedEvent - triggered by calling
set.removeAll()/set.retainAll()
Bound properties
- content - read-only.
- size - read-only.
- Authors:
- Andres Almiray
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