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

        PropertyChangeSupport sup = new PropertyChangeSupport(src);
        PropertyChangeListener l1 = new MockPropertyChangeListener();
        sup.addPropertyChangeListener("myProp", l1);
        assertEquals(1, sup.getPropertyChangeListeners().length);


        sup.removePropertyChangeListener("myProp", l1);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        assertEquals(0, sup.getPropertyChangeListeners("myProp").length);


        PropertyChangeListener l2 = new MockPropertyChangeListener();
        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",

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        PropertyChangeListener l2 = new MockPropertyChangeListener();
        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);
        sup.addPropertyChangeListener(l3);
        assertEquals(1, sup.getPropertyChangeListeners().length);
        sup.removePropertyChangeListener("myProp", l2);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        assertEquals(0, sup.getPropertyChangeListeners("myProp").length);
    }


    /*

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     * String) with a non-registered listener parameter.
     */
    public void testRemovePropertyChangeListener_PropertyChangeListener_String_NonRegistered() {
        Object src = new Object();
        PropertyChangeSupport sup = new PropertyChangeSupport(src);
        sup.removePropertyChangeListener("myProp",
                new MockPropertyChangeListener());
        assertEquals(0, sup.getPropertyChangeListeners().length);
    }


    /*

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     */
    public void testRemovePropertyChangeListener_PropertyChangeListener_String_NullListener() {
        Object src = new Object();
        PropertyChangeSupport sup = new PropertyChangeSupport(src);


        sup.removePropertyChangeListener("myProp", null);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        sup.addPropertyChangeListener("myProp", null);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        sup.removePropertyChangeListener("myProp", null);
        assertEquals(0, sup.getPropertyChangeListeners().length);

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        sup.removePropertyChangeListener("myProp", null);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        sup.addPropertyChangeListener("myProp", null);
        assertEquals(0, sup.getPropertyChangeListeners().length);
        sup.removePropertyChangeListener("myProp", null);
        assertEquals(0, sup.getPropertyChangeListeners().length);
    }


    /*
     * Test the method removePropertyChangeListener(PropertyChangeListener,

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     */
    public void testRemovePropertyChangeListener_PropertyChangeListener_String_NullProperty() {
        Object src = new Object();
        PropertyChangeSupport sup = new PropertyChangeSupport(src);


        sup.removePropertyChangeListener(null,
                new MockPropertyChangeListener());
        sup.addPropertyChangeListener("myProp",
                new MockPropertyChangeListener());
        sup.removePropertyChangeListener(null,
                new MockPropertyChangeListener());

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        sup.removePropertyChangeListener(null,
                new MockPropertyChangeListener());
        sup.addPropertyChangeListener("myProp",
                new MockPropertyChangeListener());
        sup.removePropertyChangeListener(null,
                new MockPropertyChangeListener());
    }


    /*
     * Test the method getPropertyChangeListeners() when there is one listener

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                l2);


        assertFalse(sup.hasListeners("myProp"));
        sup.addPropertyChangeListener(l1);
        assertTrue(sup.hasListeners("myProp"));
        sup.removePropertyChangeListener(l1);
        assertFalse(sup.hasListeners("myProp"));
        sup.addPropertyChangeListener(l3);
        assertTrue(sup.hasListeners("myProp"));
    }

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        assertFalse(sup.hasListeners("myProp"));
        sup.addPropertyChangeListener("myProP", l1);
        assertFalse(sup.hasListeners("myProp"));
        sup.addPropertyChangeListener("myProp", l2);
        assertTrue(sup.hasListeners("myProp"));
        sup.removePropertyChangeListener("myProp", l2);
        assertFalse(sup.hasListeners("myProp"));
        // The following assertion fails on RI. See HARMONY-2526
        sup.addPropertyChangeListener("myProp", l3);
        assertTrue(sup.hasListeners("myProp"));
    }

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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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