javax.swing.plaf.basic.BasicMenuItemUI#javax.swing.plaf.MenuItemUI源码实例Demo

public static boolean isSynthUI(final MenuItemUI ui) {
  Class<?> aClass = ui.getClass();

  while (aClass != null && aClass.getSimpleName().contains("Synth")) {
    final Class<?>[] interfaces = aClass.getInterfaces();
    for (int i = 0, length = interfaces.length; i < length; i++) {
      final Class<?> anInterface = interfaces[i];
      if (V6_SYNTH_UI_CLASS.equals(anInterface.getName()) || V7_SYNTH_UI_CLASS.equals(anInterface.getName())) {
        return true;
      }
    }
    aClass = aClass.getSuperclass();
  }

  return false;
}
 

/**
 * Maps {@code JMenuItem.setUI(MenuItemUI)} through queue
 */
public void setUI(final MenuItemUI menuItemUI) {
    runMapping(new MapVoidAction("setUI") {
        @Override
        public void map() {
            ((JMenuItem) getSource()).setUI(menuItemUI);
        }
    });
}
 

@Override
public void updateUI() {
	setUI((MenuItemUI) UIManager.getUI(this));
	if (popupMenu != null) {
		popupMenu.setUI((PopupMenuUI) UIManager.getUI(popupMenu));
	}
}
 

public static ComponentUI createUI(JComponent c) {
	LookAndFeel underlying = UIManager.getLookAndFeel();
	DockingCheckboxMenuItemUI result = new DockingCheckboxMenuItemUI();
	result.ui = (MenuItemUI) underlying.getDefaults().getUI(c);
	return result;
}
 

public static ComponentUI createUI(JComponent c) {
	LookAndFeel underlying = UIManager.getLookAndFeel();
	DockingMenuUI result = new DockingMenuUI();
	result.ui = (MenuItemUI) underlying.getDefaults().getUI(c);
	return result;
}
 

public static ComponentUI createUI(JComponent c) {
	LookAndFeel underlying = UIManager.getLookAndFeel();
	DockingMenuItemUI result = new DockingMenuItemUI();
	result.ui = (MenuItemUI) underlying.getDefaults().getUI(c);
	return result;
}
 

@Override
public void setUI(final MenuItemUI ui) {
  final MenuItemUI newUi = !myTopLevel && UIUtil.isUnderGTKLookAndFeel() && GtkMenuUI.isUiAcceptable(ui) ? new GtkMenuUI(ui) : ui;
  super.setUI(newUi);
}
 

@Override
public void setUI(final MenuItemUI ui) {
  final MenuItemUI newUi = UIUtil.isUnderGTKLookAndFeel() && GtkMenuItemUI.isUiAcceptable(ui) ? new GtkMenuItemUI(ui) : ui;
  super.setUI(newUi);
}
 

public GtkMenuUI(final MenuItemUI originalUI) {
  assert isUiAcceptable(originalUI) : originalUI;
  myOriginalUI = (BasicMenuUI)originalUI;
}
 

public static boolean isUiAcceptable(final MenuItemUI ui) {
  return ui instanceof BasicMenuUI && GtkPaintingUtil.isSynthUI(ui);
}
 

public static SynthContext getSynthContext(final MenuItemUI ui, final JComponent item) {
  return GTKPlusUIUtil.getSynthContext(ui, item);
}
 

public IconWrapper(final Icon icon, final MenuItemUI originalUI) {
  myIcon = icon;
  myOriginalUI = originalUI;
}
 

public GtkMenuItemUI(final MenuItemUI originalUI) {
  assert isUiAcceptable(originalUI) : originalUI;
  myOriginalUI = (BasicMenuItemUI)originalUI;
}
 

public static boolean isUiAcceptable(final MenuItemUI ui) {
  return ui instanceof BasicMenuItemUI && GtkPaintingUtil.isSynthUI(ui);
}