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| 1 | +/* |
| 2 | + * Copyright Amazon.com Inc. 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. |
| 8 | + * |
| 9 | + * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | + * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | + * accompanied this code). |
| 14 | + * |
| 15 | + * You should have received a copy of the GNU General Public License version |
| 16 | + * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | + * |
| 19 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | + * or visit www.oracle.com if you need additional information or have any |
| 21 | + * questions. |
| 22 | + */ |
| 23 | + |
| 24 | +import java.awt.Frame; |
| 25 | +import java.awt.List; |
| 26 | +import java.awt.Robot; |
| 27 | +import java.util.Arrays; |
| 28 | +import java.util.function.Supplier; |
| 29 | + |
| 30 | +/** |
| 31 | + * @test |
| 32 | + * @bug 8371657 |
| 33 | + * @key headful |
| 34 | + * @summary Checks that programmatic changes to a List do not fire events |
| 35 | + */ |
| 36 | +public final class ProgrammaticChange { |
| 37 | + |
| 38 | + private static Robot robot; |
| 39 | + private static volatile boolean itemEvent; |
| 40 | + private static volatile boolean actionEvent; |
| 41 | + |
| 42 | + public static void main(String[] args) throws Exception { |
| 43 | + robot = new Robot(); |
| 44 | + robot.mouseMove(0, 0); // Just in case, the mouse may affect selection |
| 45 | + |
| 46 | + var creators = Arrays.<Supplier<List>>asList( |
| 47 | + List::new, () -> createList(false), () -> createList(true) |
| 48 | + ); |
| 49 | + for (Supplier<List> creator : creators) { |
| 50 | + test(creator, true); // Test displayable list |
| 51 | + test(creator, false); // Test non-displayable list |
| 52 | + } |
| 53 | + } |
| 54 | + |
| 55 | + private static void test(Supplier<List> creator, boolean displayable) { |
| 56 | + List list = creator.get(); |
| 57 | + list.addItemListener(event -> { |
| 58 | + System.err.println("event = " + event); |
| 59 | + itemEvent = true; |
| 60 | + }); |
| 61 | + list.addActionListener(event -> { |
| 62 | + System.err.println("event = " + event); |
| 63 | + actionEvent = true; |
| 64 | + }); |
| 65 | + |
| 66 | + Frame frame = null; |
| 67 | + try { |
| 68 | + if (displayable) { |
| 69 | + frame = new Frame(); |
| 70 | + frame.setSize(300, 200); |
| 71 | + frame.setLocationRelativeTo(null); |
| 72 | + frame.add(list); |
| 73 | + frame.setVisible(true); |
| 74 | + } |
| 75 | + tryTriggerEvents(list); |
| 76 | + } finally { |
| 77 | + if (frame != null) { |
| 78 | + frame.dispose(); |
| 79 | + } |
| 80 | + } |
| 81 | + } |
| 82 | + |
| 83 | + private static void tryTriggerEvents(List list) { |
| 84 | + // Only "select" and "deselect" should not fire events per the spec, |
| 85 | + // but we also check other methods to prevent accidental changes |
| 86 | + selectAll(list); |
| 87 | + verify(); |
| 88 | + deselectAll(list); |
| 89 | + verify(); |
| 90 | + |
| 91 | + // "add" may change the current selection |
| 92 | + selectAll(list); |
| 93 | + list.add("newItemStart", 0); |
| 94 | + list.add("newItemMid", 1); |
| 95 | + list.add("newItemEnd"); |
| 96 | + verify(); |
| 97 | + |
| 98 | + // "remove" may change the current selection |
| 99 | + selectAll(list); |
| 100 | + list.remove(0); |
| 101 | + verify(); |
| 102 | + |
| 103 | + // "makeVisible" may change the current selection |
| 104 | + for (int i = 0; i < 100; i++){ |
| 105 | + list.add("newItem_" + i, 0); |
| 106 | + } |
| 107 | + selectAll(list); |
| 108 | + list.makeVisible(1); |
| 109 | + list.makeVisible(99); |
| 110 | + verify(); |
| 111 | + |
| 112 | + // "setMultipleMode" may change the current selection |
| 113 | + selectAll(list); |
| 114 | + list.setMultipleMode(!list.isMultipleMode()); |
| 115 | + selectAll(list); |
| 116 | + list.setMultipleSelections(!list.allowsMultipleSelections()); |
| 117 | + verify(); |
| 118 | + |
| 119 | + // "removeAll" may change the current selection |
| 120 | + selectAll(list); |
| 121 | + list.removeAll(); |
| 122 | + verify(); |
| 123 | + |
| 124 | + // No extra logic; just calling methods to touch all code paths |
| 125 | + list.add("newItem1"); |
| 126 | + list.getSelectedIndex(); |
| 127 | + list.getSelectedIndexes(); |
| 128 | + list.getSelectedItem(); |
| 129 | + list.getSelectedItems(); |
| 130 | + list.getSelectedObjects(); |
| 131 | + list.getVisibleIndex(); |
| 132 | + list.isIndexSelected(0); |
| 133 | + list.isSelected(0); |
| 134 | + |
| 135 | + list.add("newItem2"); |
| 136 | + list.delItems(0, 0); |
| 137 | + list.addItem("newItem4"); |
| 138 | + list.delItem(0); |
| 139 | + list.addItem("newItem6", 0); |
| 140 | + list.replaceItem("newItem7", 0); |
| 141 | + list.remove("newItem7"); |
| 142 | + list.add("newItem8"); |
| 143 | + list.clear(); |
| 144 | + verify(); |
| 145 | + } |
| 146 | + |
| 147 | + private static void selectAll(List list) { |
| 148 | + for (int index = 0; index < list.getItemCount(); index++) { |
| 149 | + list.select(index); |
| 150 | + } |
| 151 | + } |
| 152 | + |
| 153 | + private static void deselectAll(List list) { |
| 154 | + for (int index = 0; index < list.countItems(); index++) { |
| 155 | + list.deselect(index); |
| 156 | + } |
| 157 | + } |
| 158 | + |
| 159 | + private static List createList(boolean multipleMode) { |
| 160 | + List list = new List(4, multipleMode); |
| 161 | + for (String item : new String[]{"item1", "item2", "item3"}) { |
| 162 | + list.add(item); |
| 163 | + } |
| 164 | + return list; |
| 165 | + } |
| 166 | + |
| 167 | + private static void verify() { |
| 168 | + robot.waitForIdle(); |
| 169 | + robot.delay(700); // Large delay, we are waiting for unexpected events |
| 170 | + if (actionEvent || itemEvent) { |
| 171 | + System.err.println("itemEvent: " + itemEvent); |
| 172 | + System.err.println("actionEvent: " + actionEvent); |
| 173 | + throw new RuntimeException("Unexpected event"); |
| 174 | + } |
| 175 | + } |
| 176 | +} |
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