javax.swing.JComponent#addComponentListener ( )源码实例Demo

/**
 * Creates a progress bar.
 * 
 * @param parent progress bar's parent. The horizontal axis of the progress bar will be center-aligned to the parent.
 * @return a progress bar.
 */
private static JProgressBar createProgressBar(final JComponent parent) {
  final JProgressBar progressBar = new JProgressBar();
  progressBar.setSize(260, 20);
  parent.addComponentListener(new ComponentAdapter() {
    @Override
    public void componentResized(ComponentEvent e) {
      progressBar.setLocation(
        parent.getWidth() / 2 - progressBar.getWidth() / 2,
        parent.getHeight() - progressBar.getHeight() - 20);
    }
  });
  progressBar.setStringPainted(true);
  progressBar.setIndeterminate(true);
  progressBar.setVisible(false);
  return progressBar;
}
 

/**
 * Creates a progress bar.
 * 
 * @param parent progress bar's parent. The horizontal axis of the progress bar will be center-aligned to the parent.
 * @return a progress bar.
 */
private static JProgressBar createProgressBar(final JComponent parent) {
  final JProgressBar progressBar = new JProgressBar();
  progressBar.setSize(260, 20);
  parent.addComponentListener(new ComponentAdapter() {
    @Override
    public void componentResized(ComponentEvent e) {
      progressBar.setLocation(
        parent.getWidth() / 2 - progressBar.getWidth() / 2,
        parent.getHeight() - progressBar.getHeight() - 20);
    }
  });
  progressBar.setStringPainted(true);
  progressBar.setIndeterminate(true);
  progressBar.setVisible(false);
  return progressBar;
}
 

@Override
public void addNotify() {
    super.addNotify();
    scene.addSceneListener(this);
    JComponent viewComponent = scene.getView();
    if (viewComponent == null) {
        viewComponent = scene.createView();
    }
    viewComponent.addComponentListener(this);
    repaint();
}
 

@Override
public void addNotify() {
    super.addNotify();
    scene.addSceneListener(this);
    JComponent viewComponent = scene.getView();
    if (viewComponent == null) {
        viewComponent = scene.createView();
    }
    viewComponent.addComponentListener(this);
    repaint();
}
 

@Override
public void installUI(JComponent slider) {
	slider.addMouseListener(this);
	slider.addMouseMotionListener(this);
	slider.addFocusListener(focusListener);
	slider.addKeyListener(keyListener);
	slider.addComponentListener(compListener);
	slider.addPropertyChangeListener(propertyListener);
	slider.addPropertyChangeListener(THUMB_SHAPE_PROPERTY,
			thumbShapeListener);
	calculateGeometry();
}
 

@Override
public void installUI(JComponent c) {
	super.installUI(c);
	c.addComponentListener(repaintComponentListener);
	JLabel label = (JLabel) c;
	label.setHorizontalTextPosition(SwingConstants.CENTER);
	label.setIconTextGap(3);
}
 

private void installExtraComponents(Container container,
		List<JComponent> components, boolean forceReinstall) {
	if (components == null)
		components = new ArrayList<>();
	Component[] oldComponents = container.getComponents();
	if (!Arrays.asList(oldComponents).equals(components)) {
		forceReinstall = true;
	}

	if (forceReinstall) {
		container.removeAll();
		GridBagConstraints c = new GridBagConstraints();
		c.gridx = 0;
		c.gridy = 100;
		c.weightx = 1;
		c.weighty = 1;
		c.fill = GridBagConstraints.BOTH;
		for (JComponent jc : components) {
			container.add(jc, c);
			if (tabs.getTabPlacement() == SwingConstants.LEFT) {
				c.gridy--;
			} else if (tabs.getTabPlacement() == SwingConstants.RIGHT) {
				c.gridy++;
			} else {
				c.gridx++;
			}
			jc.removeComponentListener(extraComponentListener);
			jc.addComponentListener(extraComponentListener);

			for (Component oldComponent : oldComponents) {
				if (components.contains(oldComponent)) {
					oldComponent
							.removeComponentListener(extraComponentListener);
				}
			}
		}
		container.revalidate();
	}
	refreshExtraContainerVisibility();
}
 

@Override
public void installUI(JComponent slider) {
	slider.addMouseListener(this);
	slider.addMouseMotionListener(this);
	slider.addFocusListener(focusListener);
	slider.addKeyListener(keyListener);
	slider.addComponentListener(compListener);
	slider.addPropertyChangeListener(propertyListener);
	slider.addPropertyChangeListener(THUMB_SHAPE_PROPERTY, thumbShapeListener);
	calculateGeometry();
}
 

void addComponentListenerTo(JComponent comp) {
	comp.addComponentListener(compListener);
}