1 /* 2 * Copyright (c) 2014, 2016, 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 package com.sun.javafx.scene.control; 26 27 import javafx.collections.ObservableList; 28 import javafx.scene.Node; 29 import javafx.scene.control.ContextMenu; 30 import javafx.scene.control.Menu; 31 import javafx.scene.control.MenuItem; 32 import javafx.scene.control.skin.ContextMenuSkin; 33 34 import java.util.Optional; 35 import javafx.scene.layout.Region; 36 37 public class ContextMenuContentShim { 38 39 private ContextMenuContentShim() { 40 // no-op 41 } 42 43 public static Region get_selectedBackground(ContextMenuContent menu) { 44 return menu.selectedBackground; 45 } 46 47 public static Menu getOpenSubMenu(ContextMenu menu) { 48 ContextMenuContent content = getMenuContent(menu); 49 return content.getOpenSubMenu(); 50 } 51 52 public static Menu getShowingSubMenu(ContextMenu menu) { 53 ContextMenuContent content = getMenuContent(menu); 54 Menu showingSubMenu = content.getOpenSubMenu(); 55 ContextMenu subContextMenu = content.getSubMenu(); 56 57 while (showingSubMenu != null) { 58 content = getMenuContent(subContextMenu); 59 60 Menu newShowingMenu = content == null ? null : content.getOpenSubMenu(); 61 subContextMenu = content == null ? null : content.getSubMenu(); 62 63 if (newShowingMenu == null) { 64 break; 65 } 66 } 67 return showingSubMenu; 68 } 69 70 public static ObservableList<MenuItem> getShowingMenuItems(ContextMenu menu) { 71 ContextMenuContent content = getMenuContent(menu); 72 Menu showingSubMenu = content.getOpenSubMenu(); 73 ContextMenu subContextMenu = content.getSubMenu(); 74 75 if (showingSubMenu == null || subContextMenu == null) { 76 return menu.getItems(); 77 } 78 79 while (showingSubMenu != null) { 80 content = getMenuContent(subContextMenu); 81 82 Menu newShowingMenu = content == null ? null : content.getOpenSubMenu(); 83 subContextMenu = content == null ? null : content.getSubMenu(); 84 85 if (newShowingMenu == null) { 86 break; 87 } 88 } 89 return showingSubMenu.getItems(); 90 } 91 92 public static Optional<ContextMenuContent> getShowingMenuContent(ContextMenu menu) { 93 ContextMenuContent content = getMenuContent(menu); 94 Menu showingSubMenu = content.getOpenSubMenu(); 95 ContextMenu subContextMenu = content.getSubMenu(); 96 return showingSubMenu != null && 97 subContextMenu != null && 98 subContextMenu.isShowing() ? getShowingMenuContent(subContextMenu) : Optional.of(content); 99 } 100 101 private static ContextMenuContent getMenuContent(ContextMenu menu) { 102 ContextMenuSkin skin = (ContextMenuSkin) menu.getSkin(); 103 Node node = skin.getNode(); 104 if (node instanceof ContextMenuContent) { 105 return (ContextMenuContent) node; 106 } 107 return null; 108 } 109 110 public static int getCurrentFocusedIndex(ContextMenu menu) { 111 // Optional<Integer> index = getShowingMenuContent(menu).flatMap(content -> Optional.of(content.getCurrentFocusIndex())); 112 // return index.orElse(-1); 113 114 Optional<ContextMenuContent> showingMenuContent = getShowingMenuContent(menu); 115 if (showingMenuContent.isPresent()) { 116 ContextMenuContent content = showingMenuContent.get(); 117 return content.getCurrentFocusIndex(); 118 } 119 120 return -1; 121 } 122 123 public static MenuItem getCurrentFocusedItem(ContextMenu menu) { 124 ObservableList<MenuItem> showingMenuItems = getShowingMenuItems(menu); 125 126 // Optional<MenuItem> item = getShowingMenuContent(menu) 127 // .flatMap(content -> Optional.of(content.getCurrentFocusIndex())) 128 // .flatMap(index -> Optional.of(showingMenuItems.get(index))); 129 // return item.orElse(null); 130 131 Optional<ContextMenuContent> showingMenuContent = getShowingMenuContent(menu); 132 if (showingMenuContent.isPresent()) { 133 ContextMenuContent content = showingMenuContent.get(); 134 int currentFocusIndex = content.getCurrentFocusIndex(); 135 return currentFocusIndex == -1 ? null : showingMenuItems.get(currentFocusIndex); 136 } 137 138 return null; 139 } 140 141 }