1 /* 2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.javafx.scene.control; 27 28 import javafx.beans.value.ChangeListener; 29 import javafx.collections.ListChangeListener; 30 import javafx.scene.AccessibleAttribute; 31 import javafx.scene.AccessibleRole; 32 import javafx.scene.control.Menu; 33 import javafx.scene.control.MenuButton; 34 import javafx.scene.control.MenuItem; 35 import javafx.scene.control.skin.MenuBarSkin; 36 37 public class MenuBarButton extends MenuButton { 38 public ChangeListener<Boolean> menuListener; 39 public MenuBarSkin menuBarSkin; 40 public Menu menu; 41 42 private final ListChangeListener<MenuItem> itemsListener; 43 private final ListChangeListener<String> styleClassListener; 44 45 public MenuBarButton(MenuBarSkin menuBarSkin, Menu menu) { 46 super(menu.getText(), menu.getGraphic()); 47 this.menuBarSkin = menuBarSkin; 48 setAccessibleRole(AccessibleRole.MENU); 49 50 // listen to changes in menu items & update menuButton items 51 menu.getItems().addListener(itemsListener = c -> { 52 while (c.next()) { 53 getItems().removeAll(c.getRemoved()); 54 getItems().addAll(c.getFrom(), c.getAddedSubList()); 55 } 56 }); 57 menu.getStyleClass().addListener(styleClassListener = c -> { 58 while(c.next()) { 59 for(int i=c.getFrom(); i<c.getTo(); i++) { 60 getStyleClass().add(menu.getStyleClass().get(i)); 61 } 62 for (String str : c.getRemoved()) { 63 getStyleClass().remove(str); 64 } 65 } 66 }); 67 idProperty().bind(menu.idProperty()); 68 } 69 70 public MenuBarSkin getMenuBarSkin() { 71 return menuBarSkin; 72 } 73 74 public void clearHover() { 75 setHover(false); 76 } 77 78 public void setHover() { 79 setHover(true); 80 81 /* Transfer the a11y focus to an item in the menu bar. */ 82 menuBarSkin.getSkinnable().notifyAccessibleAttributeChanged(AccessibleAttribute.FOCUS_NODE); 83 } 84 85 public void dispose() { 86 menu.getItems().removeListener(itemsListener); 87 menu.getStyleClass().removeListener(styleClassListener); 88 idProperty().unbind(); 89 } 90 91 @Override 92 public Object queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters) { 93 switch (attribute) { 94 case FOCUS_ITEM: return MenuBarButton.this; 95 default: return super.queryAccessibleAttribute(attribute, parameters); 96 } 97 } 98 }