Java tutorial
/** * This file is part of mycollab-ui. * * mycollab-ui 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. * * mycollab-ui 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 mycollab-ui. If not, see <http://www.gnu.org/licenses/>. */ package com.esofthead.mycollab.vaadin.ui; import com.vaadin.ui.*; import java.util.Collection; /** * @author MyCollab Ltd * @since 5.1.1 */ public class UIUtils { public static <T> T getRoot(Component container, Class<T> type) { HasComponents parent = container.getParent(); while (parent != null) { if (type.isAssignableFrom(parent.getClass())) { return (T) parent; } else { parent = parent.getParent(); } } return null; } public static boolean removeChildAssociate(Component container, Class type) { HasComponents parent = container.getParent(); while (parent != null) { if (type.isAssignableFrom(parent.getClass()) && (parent instanceof ComponentContainer)) { ((ComponentContainer) parent).removeComponent(container); return true; } else { return removeChildAssociate(parent, type); } } return false; } public static Integer getBrowserWidth() { return UI.getCurrent().getPage().getBrowserWindowWidth(); } public static Integer getBrowserHeight() { return UI.getCurrent().getPage().getBrowserWindowHeight(); } public static void removeAllWindows() { Collection<Window> windows = UI.getCurrent().getWindows(); for (Window window : windows) { window.close(); } } }