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

        VetoableChangeSupport support = new VetoableChangeSupport(source);


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


        String propertyName = "label";
        support.addVetoableChangeListener(null);


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


        support.removeVetoableChangeListener(null);

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     */
    public void testFireVetoableChange_regression() {
        VetoableChangeSupport vcs = new VetoableChangeSupport(this);
        MockVetoListener2 vlistener = new MockVetoListener2();


        vcs.addVetoableChangeListener(vlistener);
        try {
            vcs.fireVetoableChange(vlistener.vetoedPropName, 0, 1);
            fail("PropertyVetoException expected");
        } catch (PropertyVetoException ok) {
        }

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


        String propertyName1 = "text";
        SerializedVCListener serialized = new SerializedVCListener(
                propertyName1);
        support.addVetoableChangeListener(propertyName1, serialized);


        String propertyName2 = "top";
        NonSerializedVCListener nonSerialized = new NonSerializedVCListener(
                propertyName2);
        support.addVetoableChangeListener(propertyName2, nonSerialized);

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        support.addVetoableChangeListener(propertyName1, serialized);


        String propertyName2 = "top";
        NonSerializedVCListener nonSerialized = new NonSerializedVCListener(
                propertyName2);
        support.addVetoableChangeListener(propertyName2, nonSerialized);


        assertTrue(support.hasListeners(propertyName1));
        assertTrue(support.hasListeners(propertyName2));
        assertEquals(2, support.getVetoableChangeListeners().length);
        assertEquals(1,

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         VetoableChangeSupport support = new VetoableChangeSupport(source);
 
         final String propertyName1 = "text";
         SerializedVCListener serialized = new SerializedVCListener(
                 propertyName1);
         support.addVetoableChangeListener(propertyName1, serialized);
 
         final String propertyName2 = "top";
         NonSerializedVCListener nonSerialized = new NonSerializedVCListener(
                 propertyName2);
         support.addVetoableChangeListener(propertyName2, nonSerialized);

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         support.addVetoableChangeListener(propertyName1, serialized);
 
         final String propertyName2 = "top";
         NonSerializedVCListener nonSerialized = new NonSerializedVCListener(
                 propertyName2);
         support.addVetoableChangeListener(propertyName2, nonSerialized);
 
         assertTrue(support.hasListeners(propertyName1));
         assertTrue(support.hasListeners(propertyName2));
         assertEquals(2, support.getVetoableChangeListeners().length);
         assertEquals(1,

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        VetoableChangeListener vcl = new VetoableChangeListener() {


            public void vetoableChange(PropertyChangeEvent pce) {
            }
        };
        vcs.addVetoableChangeListener(vcl);
        VetoableChangeListener[] vcls = vcs.getVetoableChangeListeners();


        assertNotNull("Returned listeners is null.", vcls);
        assertEquals(1, vcls.length);
        assertEquals(vcl, vcls[0]);

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        VetoableChangeListener vcl = new VetoableChangeListener() {


            public void vetoableChange(PropertyChangeEvent pce) {
            }
        };
        vcs.addVetoableChangeListener("property1", vcl);
        VetoableChangeListener[] vcls = vcs
                .getVetoableChangeListeners("property1");


        assertNotNull("Returned listeners is null.", vcls);
        assertEquals(1, vcls.length);

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        VetoableChangeListener vcl = new VetoableChangeListener() {


            public void vetoableChange(PropertyChangeEvent pce) {
            }
        };
        vcs.addVetoableChangeListener("property1", vcl);
        VetoableChangeListener[] vcls = vcs.getVetoableChangeListeners();


        assertNotNull("Returned listeners is null.", vcls);
        assertEquals(1, vcls.length);

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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_invalid", "Label: old", "Label: new");
        assertEquals("text.default", source.getText());
    }


    /*

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