Examples of java.beans.VetoableChangeSupport.addVetoableChangeListener()

java.beans.VetoableChangeSupport.addVetoableChangeListener()
Add a VetoableListener 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 VetoableChangeListener to be added

        MockSource source = new MockSource();
        VetoableChangeSupport support = new VetoableChangeSupport(source);


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener(proxy);
        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "Label: old", "Label: new");
        support.fireVetoableChange(event);


        assertEquals("called", source.getText());

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            throws PropertyVetoException {
        MockSource source = new MockSource();
        VetoableChangeSupport support = new VetoableChangeSupport(source);


        MockVetoListener normal1 = new MockVetoListener(false, "Norm1");
        support.addVetoableChangeListener(normal1);


        MockVetoListener veto1 = new MockVetoListener(true, "Veto1");
        support.addVetoableChangeListener(veto1);


        MockVetoListener normal2 = new MockVetoListener(false, "Norm2");

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        MockVetoListener normal1 = new MockVetoListener(false, "Norm1");
        support.addVetoableChangeListener(normal1);


        MockVetoListener veto1 = new MockVetoListener(true, "Veto1");
        support.addVetoableChangeListener(veto1);


        MockVetoListener normal2 = new MockVetoListener(false, "Norm2");
        support.addVetoableChangeListener(normal2);


        MockVetoListener veto2 = new MockVetoListener(true, "Veto2");

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        MockVetoListener veto1 = new MockVetoListener(true, "Veto1");
        support.addVetoableChangeListener(veto1);


        MockVetoListener normal2 = new MockVetoListener(false, "Norm2");
        support.addVetoableChangeListener(normal2);


        MockVetoListener veto2 = new MockVetoListener(true, "Veto2");
        support.addVetoableChangeListener(veto2);


        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",

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        MockVetoListener normal2 = new MockVetoListener(false, "Norm2");
        support.addVetoableChangeListener(normal2);


        MockVetoListener veto2 = new MockVetoListener(true, "Veto2");
        support.addVetoableChangeListener(veto2);


        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "1", "5");
        try {
            support.fireVetoableChange(event);

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        MockSource source = new MockSource();
        VetoableChangeSupport support = new VetoableChangeSupport(source);


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener(proxy);
        try {
            support.fireVetoableChange(null);
            fail("Should throw NullPointerException.");
        } catch (NullPointerException e) {
            // expected

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        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");


        String propertyName = "label";
        support.addVetoableChangeListener(propertyName, proxy);
        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "Label: old", "Label: new");
        support.fireVetoableChange(event);


        assertEquals("called", source.getText());

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        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");


        String propertyName = "label_invalid";
        support.addVetoableChangeListener(propertyName, proxy);
        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "Label: old", "Label: new");
        support.fireVetoableChange(event);


        assertEquals("text.default", source.getText());

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        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "increaseTop");
        VetoableChangeListener proxy2 = EventHandler.create(
                VetoableChangeListener.class, source, "setText");


        support.addVetoableChangeListener(proxy);
        support.addVetoableChangeListener(proxy);
        support.addVetoableChangeListener(proxy2);


        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "Label: old", "Label: new");

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                VetoableChangeListener.class, source, "increaseTop");
        VetoableChangeListener proxy2 = EventHandler.create(
                VetoableChangeListener.class, source, "setText");


        support.addVetoableChangeListener(proxy);
        support.addVetoableChangeListener(proxy);
        support.addVetoableChangeListener(proxy2);


        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "Label: old", "Label: new");
        support.fireVetoableChange(event);

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