Examples of java.beans.Visibility

java.beans.Visibility
Under some circumstances a bean may be run on servers where a GUI is not available. This interface can be used to query a bean to determine whether it absolutely needs a gui, and to advise the bean whether a GUI is available.
This interface is for expert developers, and is not needed for normal simple beans. To avoid confusing end-users we avoid using getXXX setXXX design patterns for these methods.

                .publicGetChildVetoableChangeListener(new Integer(129));
        assertNull(result);
    }


    public void testGetChildVisibility_NullParam() {
        Visibility result = MockBeanContextSupport
                .publicGetChildVisibility(null);
        assertNull(result);
    }

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        assertNull(result);
    }


    public void testGetChildVisibility() {
        MockBeanContextSupport child = new MockBeanContextSupport();
        Visibility result = MockBeanContextSupport
                .publicGetChildVisibility(child);
        assertSame(child, result);
    }

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                .publicGetChildVisibility(child);
        assertSame(child, result);
    }


    public void testGetChildVisibility_WrongClass() {
        Visibility result = MockBeanContextSupport
                .publicGetChildVisibility(new Integer(129));
        assertNull(result);
    }

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    public void testNeedsGui_VisibilityChild() {
        MockBeanContextSupport support = new MockBeanContextSupport();
        assertFalse(support.needsGui());


        Visibility child = new MockVisibility(false, true);
        support.add(child);
        assertTrue(support.needsGui());
    }

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            Object childs[] = copyChildren();
            for (int i = 0; i < childs.length; i++) {
                if (childs[i] instanceof Component) {
                    return true;
                }
                Visibility v = getChildVisibility(childs[i]);
                if (v != null && v.needsGui()) {
                    return true;
                }
            }
            return false;
        } finally {

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            Object childs[] = copyChildren();
            for (int i = 0; i < childs.length; i++) {
                if (childs[i] instanceof Component) {
                    return true;
                }
                Visibility v = getChildVisibility(childs[i]);
                if (v != null && v.needsGui()) {
                    return true;
                }
            }
            return false;
        } finally {

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            Object childs[] = copyChildren();
            for (int i = 0; i < childs.length; i++) {
                if (childs[i] instanceof Component) {
                    return true;
                }
                Visibility v = getChildVisibility(childs[i]);
                if (v != null && v.needsGui()) {
                    return true;
                }
            }
            return false;
        } finally {

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            Object childs[] = copyChildren();
            for (int i = 0; i < childs.length; i++) {
                if (childs[i] instanceof Component) {
                    return true;
                }
                Visibility v = getChildVisibility(childs[i]);
                if (v != null && v.needsGui()) {
                    return true;
                }
            }
            return false;
        } finally {

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                        "beans.30", targetChild, e.getMessage())); //$NON-NLS-1$
            }


            // If child implements Visibility,
            // set an appropriate type of ability to render GUI
            Visibility vis = getChildVisibility(targetChild);


            if (vis != null) {
                if (this.okToUseGui) {
                    vis.okToUseGui();
                } else {
                    vis.dontUseGui();
                }
            }


            // Check if this child implements Serializable and increase
            // the number of serializable children of the BeanContext

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        // Command this BeanContext and its children not to use GUI
        this.okToUseGui = false;


        for (Iterator it = iterator(); it.hasNext();) {
            Object next = it.next();
            Visibility vis = getChildVisibility(next);


            if (vis != null) {
                vis.dontUseGui();
            }
        }
    }

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Related Classes of java.beans.Visibility

org.apache.harmony.beans.tests.java.beans.beancontext.BeanContextSupportTest

java.beans.beancontext.BeanContextSupport

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