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);
        support.fireVetoableChange("label", "Label: old", "Label: old");
        assertEquals("text.default", source.getText());
    }


    /*

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


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener("label", proxy);
        support.fireVetoableChange("label", null, null);
        assertEquals("called", source.getText());
    }


    /*

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


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener("label_invalid", proxy);
        support.fireVetoableChange("label", "1", "2");
        assertEquals("text.default", source.getText());
    }


    public void testFireVetoableChangeException_revert_event() {

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        final VetoableChangeSupport support = new VetoableChangeSupport(
                new Object());
        final StringBuffer sb = new StringBuffer();
        final String A_IN = "a", B_IN = "b", A_THROW = "A", B_THROW = "B";


        support.addVetoableChangeListener(new VetoableChangeListener() {
            public void vetoableChange(PropertyChangeEvent e)
                    throws PropertyVetoException {
                sb.append(A_IN);
                if (sb.length() == 4) {
                    sb.append(A_THROW);

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                    throw new PropertyVetoException(A_THROW, e);
                }
            }
        });


        support.addVetoableChangeListener(new VetoableChangeListener() {
            public void vetoableChange(PropertyChangeEvent e)
                    throws PropertyVetoException {
                sb.append(B_IN);
                if (sb.length() == 2) {
                    sb.append(B_THROW);

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


        String propertyName = "label";
        support.addVetoableChangeListener(propertyName, proxy);
        assertTrue(support.hasListeners(propertyName));


        support.removeVetoableChangeListener(propertyName, proxy);
        assertFalse(support.hasListeners(propertyName));
        assertEquals(0, support.getVetoableChangeListeners(propertyName).length);

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


        String propertyName = "label";
        support.addVetoableChangeListener(propertyName, proxy);
        support.addVetoableChangeListener(propertyName, proxy);


        assertTrue(support.hasListeners(propertyName));
        assertEquals(2, support.getVetoableChangeListeners(propertyName).length);

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


        String propertyName = "label";
        support.addVetoableChangeListener(propertyName, proxy);
        support.addVetoableChangeListener(propertyName, proxy);


        assertTrue(support.hasListeners(propertyName));
        assertEquals(2, support.getVetoableChangeListeners(propertyName).length);


        support.removeVetoableChangeListener(propertyName, proxy);

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


        String propertyName = "label";
        support.addVetoableChangeListener(propertyName, proxy);
        support.addVetoableChangeListener(propertyName, proxy2);


        assertTrue(support.hasListeners(propertyName));
        assertEquals(2, support.getVetoableChangeListeners(propertyName).length);

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


        String propertyName = "label";
        support.addVetoableChangeListener(propertyName, proxy);
        support.addVetoableChangeListener(propertyName, proxy2);


        assertTrue(support.hasListeners(propertyName));
        assertEquals(2, support.getVetoableChangeListeners(propertyName).length);


        support.removeVetoableChangeListener(propertyName, proxy);

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