Examples of javax.swing.event.AncestorListener

javax.swing.event.AncestorListener
AncestorListener Interface to support notification when changes occur to a JComponent or one of its ancestors. These include movement and when the component becomes visible or invisible, either by the setVisible() method or by being added or removed from the component hierarchy. @author Dave Moore

        return accessibleContext;
    }




    protected void installAncestorListener() {
        addAncestorListener(new AncestorListener() {
            public void ancestorAdded(final AncestorEvent e) {
            }


            public void ancestorMoved(final AncestorEvent e) {
            }

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     *                  to.
     */
    public static void installJComponentRepainterOnWindowFocusChanged(JComponent component) {
        // TODO check to see if the component already has an ancestor.
        WindowListener   windowListener   = createWeakWindowFocusListener(createRepaintWindowListener(component));
        AncestorListener ancestorListener = createAncestorListener(component, windowListener);


        component.addAncestorListener(ancestorListener);
    }

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     * @return the weak referenced listener.
     */
    private static AncestorListener createAncestorListener(JComponent component, final WindowListener windowListener) {
        final WeakReference<JComponent> weakReference = new WeakReference<JComponent>(component);


        return new AncestorListener() {
            public void ancestorAdded(AncestorEvent event) {
                // TODO if the WeakReference's object is null, remove the
                // WeakReference as an AncestorListener.
                Window window = weakReference.get() == null ? null : SwingUtilities.getWindowAncestor(weakReference.get());

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        }
        if (counter == initialIndex) {
          initialFocusComponent = newComponent;
          if (initialFocusComponent instanceof JButton) {
            JButton defaultB = (JButton)initialFocusComponent;
            defaultB.addAncestorListener(new AncestorListener() {
              public void ancestorAdded(AncestorEvent e) { 
                JButton defaultButton = (JButton)e.getComponent();
                JRootPane root = SwingUtilities.getRootPane(defaultButton);
                if (root != null) {
                  root.setDefaultButton(defaultButton);

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         * hideFloatingPanel();
         * }
         * };
         */
        public ConerButtonItemListener() {
            DrawingViewPanel_OLD.this.addAncestorListener(new AncestorListener() {
                public void ancestorAdded(AncestorEvent event) {
                    hideFloatingPanel();
                }
                
                public void ancestorRemoved(AncestorEvent event) {

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        }
        if (counter == initialIndex) {
          initialFocusComponent = newComponent;
          if (initialFocusComponent instanceof JButton) {
            JButton defaultB = (JButton)initialFocusComponent;
            defaultB.addAncestorListener(new AncestorListener() {
              public void ancestorAdded(AncestorEvent e) { 
                JButton defaultButton = (JButton)e.getComponent();
                JRootPane root = SwingUtilities.getRootPane(defaultButton);
                if (root != null) {
                  root.setDefaultButton(defaultButton);

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        }
        if (counter == initialIndex) {
          initialFocusComponent = newComponent;
          if (initialFocusComponent instanceof JButton) {
            JButton defaultB = (JButton)initialFocusComponent;
            defaultB.addAncestorListener(new AncestorListener() {
              public void ancestorAdded(AncestorEvent e) { 
                JButton defaultButton = (JButton)e.getComponent();
                JRootPane root = SwingUtilities.getRootPane(defaultButton);
                if (root != null) {
                  root.setDefaultButton(defaultButton);

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            public void ancestorRemoved(final AncestorEvent event) {
            }
        }
        ;
        AncestorListener ancestorListener1 = new ConcreteAncestorListener();
        AncestorListener ancestorListener2 = new ConcreteAncestorListener();
        VetoableChangeListener vetoableChangeListener = new VetoableChangeListener() {
            public void vetoableChange(final PropertyChangeEvent evt) {
            }
        };
        EventListener[] listenersArray = null;

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            public void ancestorRemoved(final AncestorEvent event) {
            }
        }
        ;
        AncestorListener ancestorListener1 = new ConcreteAncestorListener();
        AncestorListener ancestorListener2 = new ConcreteAncestorListener();
        AncestorListener ancestorListener3 = new ConcreteAncestorListener();
        EventListener[] listenersArray = null;
        listenersArray = panel.getAncestorListeners();
        assertTrue(listenersArray.length == 0);
        panel.addAncestorListener(ancestorListener1);
        panel.addAncestorListener(ancestorListener2);

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            public void ancestorRemoved(final AncestorEvent event) {
            }
        }
        ;
        AncestorListener ancestorListener1 = new ConcreteAncestorListener();
        AncestorListener ancestorListener2 = new ConcreteAncestorListener();
        AncestorListener ancestorListener3 = new ConcreteAncestorListener();
        EventListener[] listenersArray = null;
        listenersArray = panel.getListeners(AncestorListener.class);
        assertTrue(listenersArray.length == 0);
        listenersArray = panel.getAncestorListeners();
        assertTrue(listenersArray.length == 0);

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