Resultado de búsqueda
Property-change events occur whenever the value of a bound property changes for a bean — a component that conforms to the JavaBeans™ specification. You can find out more about beans from the JavaBeans trail of the Java Tutorial. All Swing components are also beans. A JavaBeans property is accessed through its get and set methods. For example, JComponent has the property font which is ...
PropertyDescriptor. public PropertyDescriptor ( String propertyName, Method readMethod, Method writeMethod) throws IntrospectionException. This constructor takes the name of a simple property, and Method objects for reading and writing the property. Parameters: propertyName - The programmatic name of the property.
Constructs a PropertyDescriptor for a property that follows the standard Java convention by having getFoo and setFoo accessor methods. Thus if the argument name is "fred", it will assume that the writer method is "setFred" and the reader method is "getFred" (or "isFred" for a boolean property). Note that the property name should start with a ...
A property can be bound and unbound unidirectional with Property.bind(ObservableValue) and Property.unbind(). Bidirectional bindings can be created and removed with bindBidirectional(Property) and unbindBidirectional(Property). The context of a ObjectProperty can be read with ReadOnlyProperty.getBean() and ReadOnlyProperty.getName().
Implementing Bound Property Support Within a Bean. To implement a bound property, take the following steps: Import the java.beans package . This gives you access to the PropertyChangeSupport class. Instantiate a PropertyChangeSupport object : private PropertyChangeSupport changes =. new PropertyChangeSupport(this);
2 de nov. de 2016 · One possible problem with binding explicitly to every child's single property, is that these bindings are made when the total.bind(...) statement is invoked. Consequently, if new Child objects are subsequently added to the list, those child's single properties will not be observed and the binding will not be invalidated if they change. . Similarly, if a child is removed from the list, its ...
29 de ene. de 2007 · target and the class is being used traditionally: /**A property value change event is a Java Beans. property change event retrofitted to use generics. to cast to proper value type. This event is also <dfn>targeted</dfn>, specifying an event target which may or may not. be the same as the source object firing this event.
