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

        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);
        assertEquals(2, source.getTop());

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


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


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

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


        support.addVetoableChangeListener(null);
            support.fireVetoableChange("label", true, false);
    }


    /*
     * register listener for property "label".

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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", true, false);


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

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


        EventHandler.create(VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener("label", null);
            support.fireVetoableChange("label", true, false);
    }


    /*
     * two different listeners registered for all

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


        support.fireVetoableChange("label", true, false);


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

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


        support.fireVetoableChange("label", true, false);


        assertEquals("called", source.getText());
        assertEquals(1, source.getTop());

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


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "label", "source.text");
        support.addVetoableChangeListener(proxy);
        support.fireVetoableChange(null, true, false);
        assertEquals(source.getText(), source.getLabel());
    }


    /*

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


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "label", "source.text");
        support.addVetoableChangeListener("label", proxy);
        support.fireVetoableChange(null, true, false);
        assertEquals("label.default", source.getLabel());
    }


    /*

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