Examples of java.beans.PropertyChangeEvent

java.beans.PropertyChangeEvent
A "PropertyChange" event gets delivered whenever a bean changes a "bound" or "constrained" property. A PropertyChangeEvent object is sent as an argument to the PropertyChangeListener and VetoableChangeListener methods.
Normally PropertyChangeEvents are accompanied by the name and the old and new value of the changed property. If the new value is a primitive type (such as int or boolean) it must be wrapped as the corresponding java.lang.* Object type (such as Integer or Boolean).
Null values may be provided for the old and the new values if their true values are not known.
An event source may send a null object as the name to indicate that an arbitrary set of if its properties have changed. In this case the old and new values should also be null.

            }
        };


        assertTrue(changer.addListener(listener));
        assertFalse(changer.addListener(listener));
        changer.firePropertyChange(new PropertyChangeEvent(this, "NOTHING", null, null));


        assertTrue(changer.removeListener(listener));
    }

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            return;


        if (oldValue != null && newValue != null && oldValue.equals(newValue)) {
            return;
        }
        firePropertyChange(new PropertyChangeEvent(getSource(), propertyName,
                oldValue, newValue));
    }

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        return listeners.remove(l);
    }


    public void fireChanges() {
        for (PropertyChangeListener pcl : listeners) {
            pcl.propertyChange(new PropertyChangeEvent(this, ICalendarSettings.CHANGE_ALL, null, null));
        }
    }

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     * edit tool loaders.
     */
    public void addPropertyChangeListener(PropertyChangeListener listener) {
        if (listener != null) {
            super.addPropertyChangeListener(listener);
            listener.propertyChange(new PropertyChangeEvent(this, LoadersProperty, null, rawLoaders));
        }
    }

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    }


    public void addPropertyChangeListener(String property,
                                          PropertyChangeListener pcl) {
        super.addPropertyChangeListener(property, pcl);
        pcl.propertyChange(new PropertyChangeEvent(this, FORMATTER_PROPERTY, null, activeFormatter));
    }

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    }


    public void addPropertyChangeListener(PropertyChangeListener pcl) {
        if (pcl != null) {
            pcs.addPropertyChangeListener(pcl);
            pcl.propertyChange(new PropertyChangeEvent(this, AvailableProjectionProperty, null, projLoaders));
        }
    }

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    public void addPropertyChangeListener(String propertyName,
                                          PropertyChangeListener pcl) {
        if (pcl != null) {
            pcs.addPropertyChangeListener(propertyName, pcl);
            pcl.propertyChange(new PropertyChangeEvent(this, AvailableProjectionProperty, null, projLoaders));
        }
    }

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     * does, this method also provides the listener with the initial version of
     * the Layer and Cursor properties.
     */
    public void addPropertyChangeListener(PropertyChangeListener pcl) {
        super.addPropertyChangeListener(pcl);
        pcl.propertyChange(new PropertyChangeEvent(this, LayersProperty, currentLayers, currentLayers));
        pcl.propertyChange(new PropertyChangeEvent(this, CursorProperty, this.getCursor(), this.getCursor()));
        pcl.propertyChange(new PropertyChangeEvent(this, BackgroundProperty, this.getBckgrnd(), this.getBckgrnd()));
    }

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  if (!rejectedSetBCOnce) {
      if (rejectedSetBCOnce = !validatePendingSetBeanContext(bc)) {
    throw new PropertyVetoException(
        "setBeanContext() change rejected:",
        new PropertyChangeEvent(beanContextChildPeer, "beanContext", oldValue, newValue)
    );
      }


      try {
    fireVetoableChange("beanContext",

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    }


    private void firePropertyChangedEvent(String fieldName, Object oldValue,
        Object newValue) throws PropertyVetoException
    {
        _changeSupport.fireVetoableChange(new PropertyChangeEvent(this,
                fieldName, oldValue, newValue));
    }

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