cz.lidinsky.editor.Menu.java Source code

Introduction

Here is the source code for cz.lidinsky.editor.Menu.java

Source

package cz.lidinsky.editor;

/*
 *  Copyright 2013, 2014, 2015 Jiri Lidinsky
 *
 *  This file is part of control4j.
 *
 *  control4j is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, version 3.
 *
 *  control4j is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with control4j.  If not, see <http://www.gnu.org/licenses/>.
 */

import org.apache.commons.lang3.StringUtils;

import java.util.Properties;

import java.awt.event.ActionListener;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JSeparator;
import javax.swing.KeyStroke;

class Menu extends JMenuBar {

    public Menu() {
        super();
    }

    /**
     *  Load menu from the properties object.
     */
    public Menu(Properties settings) {
        // get top level items
        String temp = settings.getProperty("main_menu_items");
        String menuItems[] = temp.split(" ");
        for (String item : menuItems) {
            add((JMenu) loadMenuItem(settings, item));
        }
    }

    protected JMenuItem loadMenuItem(Properties settings, String key) {
        try {
            String temp = settings.getProperty(key + "_menu_items");
            JMenuItem menuItem;
            if (temp != null) {
                JMenu menu = new JMenu();
                String menuItems[] = temp.split(" ");
                for (String item : menuItems) {
                    if (item.equals("|")) {
                        menu.add(new JSeparator());
                    } else {
                        menu.add(loadMenuItem(settings, item));
                    }
                }
                menuItem = menu;
            } else {
                menuItem = new JMenuItem();
            }
            // set the menu item label
            setLabel(menuItem, settings.getProperty(key + "_menu_label"));
            // action
            String actionKey = settings.getProperty(key + "_menu_action");
            if (actionKey != null) {
                menuItem.setAction(Action.getAction(settings, actionKey));
            }
            return menuItem;
        } catch (Exception e) {
            // TODO:
            throw new AssertionError();
        }
    }

    protected void setLabel(final JMenuItem menuItem, final String label) {
        if (label != null) {
            int mnemonicIndex = label.indexOf('_');
            if (mnemonicIndex >= 0) {
                String text = StringUtils.remove(label, '_');
                int key = text.codePointAt(mnemonicIndex);
                menuItem.setText(text);
                menuItem.setMnemonic(key);
            } else {
                menuItem.setText(label);
            }
        }
    }

    /**
     *  Adds new menu item at the end of the menu.
     */
    Menu addItem(String text, String actionCommand, ActionListener listener) {
        JMenuItem item = new JMenuItem(text);
        item.setActionCommand(actionCommand);
        item.addActionListener(listener);
        JMenu lastMenu = getMenu(getMenuCount() - 1);
        lastMenu.add(item);
        return this;
    }

    Menu addItem(String text, String actionCommand, ActionListener listener, char mnemonic) {
        JMenuItem item = new JMenuItem(text);
        item.setActionCommand(actionCommand);
        item.addActionListener(listener);
        item.setMnemonic(mnemonic);
        JMenu lastMenu = getMenu(getMenuCount() - 1);
        lastMenu.add(item);
        return this;
    }

    /**
     *  Adds a separator at the end of the menu.
     */
    Menu addSeparator() {
        JMenu lastMenu = getMenu(getMenuCount() - 1);
        lastMenu.add(new JSeparator());
        return this;
    }
}