Examples of java.beans.beancontext.BeanContextChildSupport.fireVetoableChange()

Class java.beans.beancontext.BeanContextChildSupport

Examples of java.beans.beancontext.BeanContextChildSupport.fireVetoableChange()

java.beans.beancontext.BeanContextChildSupport.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 name The programmatic name of the property that is about tochange @param oldValue The old value of the property @param newValue - The new value of the property @throws PropertyVetoException if the recipient wishes the propertychange to be rolled back.

            throws PropertyVetoException {
        BeanContextChildSupport support = new MockBeanContextChildSupport();
        support.addVetoableChangeListener(null,
                new MockVetoableChangeListener());
        support.addVetoableChangeListener("property name", null);
        support.fireVetoableChange("property name", "old value", "new value");
    }


    public void testAddVetoableChangeListener() throws PropertyVetoException {
        BeanContextChildSupport support = new MockBeanContextChildSupport();
        MockVetoableChangeListener l1 = new MockVetoableChangeListener();

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        Object oldValue = new Integer(1);
        Object newValue = new Integer(5);


        l1.clearLastEvent();
        l2.clearLastEvent();
        support.fireVetoableChange(propName, oldValue, newValue);
        assertNull(l1.lastEvent);
        assertNull(l2.lastEvent);


        support.addVetoableChangeListener(propName, l1);
        l1.clearLastEvent();

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        assertNull(l2.lastEvent);


        support.addVetoableChangeListener(propName, l1);
        l1.clearLastEvent();
        l2.clearLastEvent();
        support.fireVetoableChange(propName, oldValue, newValue);
        assertEquals(propName, l1.lastEvent.getPropertyName());
        assertSame(oldValue, l1.lastEvent.getOldValue());
        assertSame(newValue, l1.lastEvent.getNewValue());
        assertSame(support, l1.lastEvent.getSource());
        assertNull(l2.lastEvent);

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        assertNull(l2.lastEvent);


        support.addVetoableChangeListener(propName, l2);
        l1.clearLastEvent();
        l2.clearLastEvent();
        support.fireVetoableChange(propName, oldValue, newValue);
        assertEquals(propName, l1.lastEvent.getPropertyName());
        assertSame(oldValue, l1.lastEvent.getOldValue());
        assertSame(newValue, l1.lastEvent.getNewValue());
        assertSame(support, l1.lastEvent.getSource());
        assertEquals(propName, l2.lastEvent.getPropertyName());

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        assertSame(newValue, l2.lastEvent.getNewValue());
        assertSame(support, l2.lastEvent.getSource());


        l1.clearLastEvent();
        l2.clearLastEvent();
        support.fireVetoableChange("xxx", oldValue, newValue);
        assertNull(l1.lastEvent);
        assertNull(l2.lastEvent);
    }


    /*

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