create JMenu from Action - Java Swing

Java examples for Swing:Action

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Description

create JMenu from Action

Demo Code


import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;
import java.util.WeakHashMap;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JToolBar;

public class Main{

    public static JMenu createMenu(String title, Object usingObject) {
        if (usingObject == null) {
            return new JMenu();
        }//from  w  w  w.j  av  a2  s  .co  m
        title = title == null ? "" : title;
        ActionInfo ai = ActionIntrospector.getActionInfo(usingObject
                .getClass());
        Action[] actions = ai.getActions(usingObject);
        return createMenu(title, actions);
    }
    public static JMenu createMenu(String title, Object usingObject,
            String[] justThese) {
        Action[] actions = ActionIntrospector.getActions(usingObject,
                justThese);
        return createMenu(title, actions);
    }
    public static JMenu createMenu(String title, Object[] usingObject) {
        if (usingObject == null) {
            return null;
        }
        title = title != null ? title : "";
        JMenu menu = new JMenu(title);
        for (int i = 0; i < usingObject.length; i++) {
            if (usingObject[i] == null) {
                continue;
            }
            Action[] actions = ActionIntrospector
                    .getActions(usingObject[i]);
            for (int j = 0; j < actions.length; j++) {
                menu.add(createMenuItem(actions[j]));
            }
            if (i < usingObject.length - 1) {
                menu.addSeparator();
            }
        }
        return menu;
    }
    public static JMenu createMenu(String title, Action[] actions) {
        if (actions == null) {
            return null;
        }
        title = title != null ? title : "";
        JMenu menu = new JMenu(title);
        for (int i = 0; i < actions.length; i++) {
            menu.add(createMenuItem(actions[i]));
        }
        return menu;
    }
    public static JMenuItem createMenuItem(Action action) {
        JMenuItem menuItem = new JMenuItem(action);
        JButtonListener listener = new JButtonListener(menuItem);
        action.addPropertyChangeListener(listener);
        configureButton(action, listener);
        return menuItem;
    }
    public static void configureButton(Action action,
            PropertyChangeListener listener) {
        if (action == null || listener == null) {
            return;
        }
        action.addPropertyChangeListener(listener);
        action.putValue("listener", listener);
        if (action instanceof AbstractAction) {
            AbstractAction abstractAction = (AbstractAction) action;
            Object[] key = abstractAction.getKeys();
            for (int i = 0; i < key.length; i++) {
                listener.propertyChange(new PropertyChangeEvent(action,
                        key[i].toString(), null, abstractAction
                                .getValue(key[i].toString())));
            }
        }
    }
}

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