Here you can find the source of limitMenuSize(JMenu menu, String name, int size)
| Parameter | Description |
|---|---|
| menu | The menu |
| name | The name suffix to use |
| size | Max size of a menu |
public static void limitMenuSize(JMenu menu, String name, int size)
//package com.java2s; /*//w w w.j av a 2s. co m * Copyright 1997-2016 Unidata Program Center/University Corporation for * Atmospheric Research, P.O. Box 3000, Boulder, CO 80307, * support@unidata.ucar.edu. * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or (at * your option) any later version. * * This library 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 Lesser * General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.util.ArrayList; import java.util.List; import javax.swing.JMenu; import javax.swing.JMenuItem; public class Main { /** * This takes the list of JMenuItems and, for each JMenu, will ensure * that there are no more than size number of items in any sub menu. * It uses name (e.g., Group) to make the sub-menus, e.g., Group 1, Group 2, ... * * @param items List of JMenuItems * @param name The name suffix to use * @param size Max size of a menu */ public static void limitMenuSize(List items, String name, int size) { for (int i = 0; i < items.size(); i++) { Object o = items.get(i); if (!(o instanceof JMenu)) { continue; } JMenu menu = (JMenu) o; limitMenuSize(menu, name, size); } } /** * This ensures that there are no more than size number of items in any sub menu. * It uses name (e.g., Group) to make the sub-menus, e.g., Group 1, Group 2, ... * * * @param menu The menu * @param name The name suffix to use * @param size Max size of a menu */ public static void limitMenuSize(JMenu menu, String name, int size) { limitMenuSize(menu, name, size, true); } /** * This ensures that there are no more than size number of items in any sub menu. * It uses name (e.g., Group) to make the sub-menus, e.g., Group 1, Group 2, ... * * * @param menu The menu * @param name The name suffix to use * @param size Max size of a menu * @param recurse If true then limit the size of all sub menus */ public static void limitMenuSize(JMenu menu, String name, int size, boolean recurse) { int cnt = menu.getItemCount(); List subMenus = new ArrayList(); List subItems = new ArrayList(); for (int i = 0; i < cnt; i++) { JMenuItem mi = menu.getItem(i); subItems.add(mi); if (mi instanceof JMenu) { subMenus.add(mi); } } if (recurse) { limitMenuSize(subMenus, name, size); } if (cnt >= size) { menu.removeAll(); JMenu currentMenu = new JMenu(name + " 1"); menu.add(currentMenu); for (int i = 0; i < subItems.size(); i++) { JMenuItem mi = (JMenuItem) subItems.get(i); if (currentMenu.getItemCount() >= size) { currentMenu = new JMenu(name + " " + (menu.getItemCount() + 1)); menu.add(currentMenu); } if (mi == null) { continue; } currentMenu.add(mi); } } } }