Examples of java.beans.VetoableChangeSupport.fireVetoableChange()

java.beans.VetoableChangeSupport.fireVetoableChange()
Report a vetoable property update to any registered listeners. If anyone vetos the change, then fire a new event reverting everyone to the old value and then rethrow the PropertyVetoException.
No event is fired if old and new are equal and non-null. @param propertyName The programmatic name of the propertythat is about to change.. @param oldValue The old value of the property. @param newValue The new value of the property. @exception PropertyVetoException if the recipient wishes the propertychange to be rolled back.

        VetoableChangeSupport support = new VetoableChangeSupport(source);


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


    /*
     * Class under test for void fireVetoableChange(String, Object, Object)

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


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


    /*
     * property name is null. register listener for one property - "label"

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener("label", proxy);
        support.fireVetoableChange(null, "Label: old", "Label: new");
        assertEquals("text.default", source.getText());
    }


    /*
     * property name is invalid. register listener for one property - "label"

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        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) {
        }


        assertEquals(Integer.valueOf(1), vlistener.event.getOldValue());

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        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());
    }


    /*
     * oldValue=NewValue. register listener for one property - "label"

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        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());
    }


    /*
     * oldValue=NewValue=null. register listener for one property - "label"

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        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());
    }


    /*
     * register listener to an invalid property

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        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() {
        final VetoableChangeSupport support = new VetoableChangeSupport(

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                }
            }
        });


        try {
            support.fireVetoableChange("propName", 0, 1);
        } catch (PropertyVetoException pve) {
            assertEquals("Illegal sequence:" + sb, "abBaAb", sb.toString());
            String message = pve.getMessage();
            assertEquals("Illegal exception:" + message, B_THROW, message);
            return;

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            return;
        }
        VetoableChangeSupport vetoableSupport =
            this.vetoableSupport;
        if (vetoableSupport != null) {
            vetoableSupport.fireVetoableChange(propertyName, oldValue,
                                               newValue);
        }
    }


    /**

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