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


    /*
     * register a null listener

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        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());
    }


    /*
     * invalid propertyname

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                VetoableChangeListener.class, source, "label", "source.text");
        support.addVetoableChangeListener(proxy);
        String newText = "new Text value";
        source.setText(newText);


        support.fireVetoableChange("label_invalid", true, false);
        assertEquals(newText, source.getLabel());
    }


    /*
     * register listener for label property

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                VetoableChangeListener.class, source, "label", "source.text");
        support.addVetoableChangeListener("label", proxy);
        String newText = "new Text value";
        source.setText(newText);


        support.fireVetoableChange("text", true, false);
        assertEquals("label.default", source.getLabel());


        support.fireVetoableChange("label_invalid", true, false);
        assertEquals("label.default", source.getLabel());

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        source.setText(newText);


        support.fireVetoableChange("text", true, false);
        assertEquals("label.default", source.getLabel());


        support.fireVetoableChange("label_invalid", true, false);
        assertEquals("label.default", source.getLabel());


        support.fireVetoableChange("label", true, false);
        assertEquals(newText, source.getLabel());
    }

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        assertEquals("label.default", source.getLabel());


        support.fireVetoableChange("label_invalid", true, false);
        assertEquals("label.default", source.getLabel());


        support.fireVetoableChange("label", true, false);
        assertEquals(newText, source.getLabel());
    }


    /*
     * oldvalue==newValue

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


        support.fireVetoableChange("label", true, true);
        assertEquals("text.default", source.getText());
    }


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

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener(proxy);
        support.fireVetoableChange("label", 1, 2);


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


    /*

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener(proxy);
        support.fireVetoableChange(null, 1, 2);


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


    /*

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        VetoableChangeSupport support = new VetoableChangeSupport(source);


        VetoableChangeListener proxy = EventHandler.create(
                VetoableChangeListener.class, source, "setText");
        support.addVetoableChangeListener(proxy);
        support.fireVetoableChange("label_invalid", 1, 2);


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


    /*

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