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.


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


        PropertyChangeEvent event = new PropertyChangeEvent(source, "label",
                "Label: old", "Label: new");
        support.fireVetoableChange(event);
        assertEquals(2, source.getTop());
        assertEquals("called", source.getText());
    }


    /*

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


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


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

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


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


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

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        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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        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());
    }


    /*
     * register listener to label.

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