Examples of java.beans.PropertyChangeSupport.addPropertyChangeListener()

java.beans.PropertyChangeSupport.addPropertyChangeListener()
Add a PropertyChangeListener to the listener list. The listener is registered for all properties. The same listener object may be added more than once, and will be called as many times as it is added. If listener is null, no exception is thrown and no action is taken. @param listener The PropertyChangeListener to be added

                .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(
                l2,
                ((PropertyChangeListenerProxy) ((PropertyChangeListenerProxy) listeners[0])

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        PropertyChangeListener l1 = new MockPropertyChangeListener();
        PropertyChangeListener l2 = new MockPropertyChangeListener();
        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);


        sup.addPropertyChangeListener(l1);


        PropertyChangeListener[] listeners = sup.getPropertyChangeListeners();
        assertEquals(1, listeners.length);
        sup.removePropertyChangeListener(l1);
        listeners = sup.getPropertyChangeListeners();

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                null, oldValue, newValue);
        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src2,
                null, oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange(event);
        l1.assertCalled();

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        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src2,
                null, oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange(event);
        l1.assertCalled();
        l2.assertNotCalled();

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                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src2,
                null, oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange(event);
        l1.assertCalled();
        l2.assertNotCalled();
        l4.assertNotCalled();

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    public void testFirePropertyChange_PropertyChangeEvent_NullListener() {
        PropertyChangeSupport sup = new PropertyChangeSupport(new Object());
        PropertyChangeEvent event = new PropertyChangeEvent(new Object(),
                "myProp", new Object(), new Object());


        sup.addPropertyChangeListener(null);
        sup.firePropertyChange(event);
    }


    /*
     * Test the method firePropertyChange(String, boolean, boolean) with normal

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                "myProp", oldValue, newValue);
        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src,
                "myProp", oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange("myProp", false, true);
        l1.assertCalled();

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        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src,
                "myProp", oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange("myProp", false, true);
        l1.assertCalled();
        l2.assertCalled();

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                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src,
                "myProp", oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange("myProp", false, true);
        l1.assertCalled();
        l2.assertCalled();
        l4.assertCalled();

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                "myProp", oldValue, newValue);
        PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp",
                l2);
        MockPropertyChangeListener l4 = new MockPropertyChangeListener(src,
                "myProp", oldValue, newValue);
        sup.addPropertyChangeListener(l1);
        sup.addPropertyChangeListener(l3);
        sup.addPropertyChangeListener("myProp", l4);


        sup.firePropertyChange("myProp", true, true);
        l1.assertNotCalled();

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