Examples of java.beans.PropertyChangeSupport.removePropertyChangeListener()

java.beans.PropertyChangeSupport.removePropertyChangeListener()
Remove a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties. If listener was added more than once to the same event source, it will be notified one less time after being removed. If listener is null, or was never added, no exception is thrown and no action is taken. @param listener The PropertyChangeListener to be removed

                PropertyChangeListener listener)
        {
            PropertyChangeSupport pcs = (PropertyChangeSupport)
                    AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
            if (null != pcs) {
                pcs.removePropertyChangeListener(propertyName, listener);
            }
        }


        @Override
        public synchronized PropertyChangeListener[] getPropertyChangeListeners()

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        @Override
        public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
            PropertyChangeSupport pcs = (PropertyChangeSupport)
                    AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
            if (null != pcs) {
                pcs.removePropertyChangeListener(listener);
            }
        }


        /*
         * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport

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        synchronized (map) {
            pcs = (PropertyChangeSupport) map.get(propName);
            if (pcs == null) {
                return;
            }
            pcs.removePropertyChangeListener(l);
        }
    }


    protected void firePropertyChange(String propName,
            Object oldVal, Object newVal) {

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                PropertyChangeListener listener)
        {
            PropertyChangeSupport pcs = (PropertyChangeSupport)
                    AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
            if (null != pcs) {
                pcs.removePropertyChangeListener(propertyName, listener);
            }
        }


        @Override
        public synchronized PropertyChangeListener[] getPropertyChangeListeners()

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        @Override
        public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
            PropertyChangeSupport pcs = (PropertyChangeSupport)
                    AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
            if (null != pcs) {
                pcs.removePropertyChangeListener(listener);
            }
        }


        /*
         * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport

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        sup.addPropertyChangeListener(l1);


        assertEquals(1, sup.getPropertyChangeListeners().length);
        assertSame(l1, sup.getPropertyChangeListeners()[0]);


        sup.removePropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        assertEquals(1, sup.getPropertyChangeListeners().length);
        assertSame(l2, ((PropertyChangeListenerProxy) sup
                .getPropertyChangeListeners()[0]).getListener());
        assertNotSame(l3, sup.getPropertyChangeListeners()[0]);

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        assertEquals(1, sup.getPropertyChangeListeners().length);
        assertSame(l2, ((PropertyChangeListenerProxy) sup
                .getPropertyChangeListeners()[0]).getListener());
        assertNotSame(l3, sup.getPropertyChangeListeners()[0]);


        sup.removePropertyChangeListener(sup.getPropertyChangeListeners()[0]);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        sup.addPropertyChangeListener(l4);
        //RI asserts to true here, really strange behavior
        assertNotSame(l3, ((PropertyChangeListenerProxy) sup
                .getPropertyChangeListeners()[0]).getListener());

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        listeners = sup.getPropertyChangeListeners();
        assertEquals(1, listeners.length);
        assertSame(l1, ((PropertyChangeListenerProxy) listeners[0])
                .getListener());


        sup.removePropertyChangeListener(listeners[0]);
        sup.addPropertyChangeListener("myProp3", l3);
        listeners = sup.getPropertyChangeListeners();
        assertEquals(1, listeners.length);
        // pay attention to this recursive proxy
        assertNotSame(l3, ((PropertyChangeListenerProxy) listeners[0])

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        assertSame(l1, ((PropertyChangeListenerProxy) listeners[0])
                .getListener());
        assertSame(l1, ((PropertyChangeListenerProxy) listeners[1])
                .getListener());


        sup.removePropertyChangeListener(listeners[0]);
        sup.removePropertyChangeListener(listeners[1]);
        sup.addPropertyChangeListener("myProp3", l3);
        sup.addPropertyChangeListener("myProp3", l3);
        listeners = sup.getPropertyChangeListeners();
        assertEquals(2, listeners.length);

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                .getListener());
        assertSame(l1, ((PropertyChangeListenerProxy) listeners[1])
                .getListener());


        sup.removePropertyChangeListener(listeners[0]);
        sup.removePropertyChangeListener(listeners[1]);
        sup.addPropertyChangeListener("myProp3", l3);
        sup.addPropertyChangeListener("myProp3", l3);
        listeners = sup.getPropertyChangeListeners();
        assertEquals(2, listeners.length);
        assertSame(

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