Examples of java.beans.PropertyEditorSupport.addPropertyChangeListener()

java.beans.PropertyEditorSupport.addPropertyChangeListener()
Register a listener for the PropertyChange event. The class will fire a PropertyChange value whenever the value is updated. @param listener An object to be invoked when a PropertyChangeevent is fired.

    public void testSetValue_Event() {
        PropertyEditorSupport support = new PropertyEditorSupport();
        Object source = new Object();
        support.setSource(source);
        MockPropertyChangeListener listener = new MockPropertyChangeListener();
        support.addPropertyChangeListener(listener);
        
        support.setValue(new Object());        
        PropertyChangeEvent event = listener.getEvent();
        assertNotNull(event);
        assertEquals(source, event.getSource());

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     * public void addPropertyChangeListener(PropertyChangeListener listener)
     */
    public void testAddPropertyChangeListener() {
        MockTarget target = new MockTarget();
        PropertyEditorSupport support = new PropertyEditorSupport();
        support.addPropertyChangeListener(EventHandler.create(
                PropertyChangeListener.class, target, "setCalled"));
        support.firePropertyChange();


        assertEquals("called", target.getLabel());
    }

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    public void testAddPropertyChangeListener_source() {
        MockTarget target = new MockTarget();
        MockSource source = new MockSource();
        PropertyEditorSupport support = new PropertyEditorSupport(source);
        support.addPropertyChangeListener(EventHandler.create(
                PropertyChangeListener.class, target, "eventSource", "source"));
        support.firePropertyChange();
        assertSame(source, target.getEventSource());
    }

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    }


    public void testAddPropertyChangeListener_source_null() {
        MockTarget target = new MockTarget();
        PropertyEditorSupport support = new PropertyEditorSupport();
        support.addPropertyChangeListener(EventHandler.create(
                PropertyChangeListener.class, target, "eventSource", ""));
        support.firePropertyChange();
        PropertyChangeEvent event = (PropertyChangeEvent) target
                .getEventSource();

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    /*
     * listener is null
     */
    public void testAddPropertyChangeListener_null() {
        PropertyEditorSupport support = new PropertyEditorSupport();
        support.addPropertyChangeListener(null);
        try {
            support.firePropertyChange();
            fail("Should throw NullPointerException.");
        } catch (NullPointerException e) {
            // expected

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    public void testRemovePropertyChangeListener() {
        MockTarget target = new MockTarget();
        PropertyEditorSupport support = new PropertyEditorSupport();
        PropertyChangeListener proxy = EventHandler.create(
                PropertyChangeListener.class, target, "eventSource", "source");
        support.addPropertyChangeListener(proxy);
        support.firePropertyChange();
        assertSame(support, target.getEventSource());


        target.setEventSource(null);
        support.removePropertyChangeListener(proxy);

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    public void testRemovePropertyChangeListener_null() {
        MockTarget target = new MockTarget();
        PropertyEditorSupport support = new PropertyEditorSupport();
        PropertyChangeListener proxy = EventHandler.create(
                PropertyChangeListener.class, target, "eventSource", "source");
        support.addPropertyChangeListener(proxy);
        support.firePropertyChange();
        assertSame(support, target.getEventSource());


        target.setEventSource(null);
        support.removePropertyChangeListener(null);

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    public void testRemovePropertyChangeListener_diff() {
        MockTarget target = new MockTarget();
        PropertyEditorSupport support = new PropertyEditorSupport();
        PropertyChangeListener proxy = EventHandler.create(
                PropertyChangeListener.class, target, "eventSource", "source");
        support.addPropertyChangeListener(proxy);
        support.firePropertyChange();
        assertSame(support, target.getEventSource());


        target.setEventSource(null);
        PropertyChangeListener proxy2 = EventHandler.create(

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    /*
     * remove null listener
     */
    public void testRemovePropertyChangeListener_null_null() {
        PropertyEditorSupport support = new PropertyEditorSupport();
        support.addPropertyChangeListener(null);
        try {
            support.firePropertyChange();
            fail("Should throw NullPointerException.");
        } catch (NullPointerException e) {
            // expected

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