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package javax.swing.plaf.synth;

import javax.swing.*;
import javax.swing.plaf.UIResource;

import java.awt.Container;
import java.awt.Dimension;

The default layout manager for Popup menus and menubars. This class is an extension of BoxLayout which adds the UIResource tag so that plauggable L&Fs can distinguish it from user-installed layout managers on menus. Derived from javax.swing.plaf.basic.DefaultMenuLayout
Author:Georges Saab
/** * The default layout manager for Popup menus and menubars. This * class is an extension of BoxLayout which adds the UIResource tag * so that plauggable L&Fs can distinguish it from user-installed * layout managers on menus. * * Derived from javax.swing.plaf.basic.DefaultMenuLayout * * @author Georges Saab */
class DefaultMenuLayout extends BoxLayout implements UIResource { public DefaultMenuLayout(Container target, int axis) { super(target, axis); } public Dimension preferredLayoutSize(Container target) { if (target instanceof JPopupMenu) { JPopupMenu popupMenu = (JPopupMenu) target; popupMenu.putClientProperty( SynthMenuItemLayoutHelper.MAX_ACC_OR_ARROW_WIDTH, null); sun.swing.MenuItemLayoutHelper.clearUsedClientProperties(popupMenu); if (popupMenu.getComponentCount() == 0) { return new Dimension(0, 0); } } // Make BoxLayout recalculate cached preferred sizes super.invalidateLayout(target); return super.preferredLayoutSize(target); } }