Java tutorial
//package com.java2s; /* Storybook: Scene-based software for novelists and authors. Copyright (C) 2008 - 2012 Martin Mustun This program 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, either version 3 of the License, or (at your option) any later version. This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.Component; import java.awt.Container; import javax.swing.JComponent; public class Main { /** * Enables or disables all children of the given container. * * @param container the container * @param enable if true, the components are enabled, otherwise they are disabled */ public static void enableContainerChildren(Container container, boolean enable) { if (container == null) return; for (Component comp : container.getComponents()) { try { comp.setEnabled(enable); ((JComponent) comp).setOpaque(enable); if (comp instanceof Container) enableContainerChildren((Container) comp, enable); } catch (ClassCastException e) { // ignore component continue; } } } }