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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2006, 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 javax.swing; | ||
| 26 | |||
| 27 | /** | ||
| 28 | * A <code>ComponentInputMap</code> is an <code>InputMap</code> | ||
| 29 | * associated with a particular <code>JComponent</code>. | ||
| 30 | * The component is automatically notified whenever | ||
| 31 | * the <code>ComponentInputMap</code> changes. | ||
| 32 | * <code>ComponentInputMap</code>s are used for | ||
| 33 | * <code>WHEN_IN_FOCUSED_WINDOW</code> bindings. | ||
| 34 | * | ||
| 35 | * @author Scott Violet | ||
| 36 | * @since 1.3 | ||
| 37 | */ | ||
| 38 | public class ComponentInputMap extends InputMap { | ||
| 39 | /** Component binding is created for. */ | ||
| 40 | private JComponent component; | ||
| 41 | |||
| 42 | /** | ||
| 43 | * Creates a <code>ComponentInputMap</code> associated with the | ||
| 44 | * specified component. | ||
| 45 | * | ||
| 46 | * @param component a non-null <code>JComponent</code> | ||
| 47 | * @throws IllegalArgumentException if <code>component</code> is null | ||
| 48 | */ | ||
| 49 | public ComponentInputMap(JComponent component) { | ||
| 50 | this.component = component; | ||
| 51 | if (component == null) { | ||
| 52 | throw new IllegalArgumentException("ComponentInputMaps must be associated with a non-null JComponent"); | ||
| 53 | } | ||
| 54 | } | ||
| 55 | |||
| 56 | /** | ||
| 57 | * Sets the parent, which must be a <code>ComponentInputMap</code> | ||
| 58 | * associated with the same component as this | ||
| 59 | * <code>ComponentInputMap</code>. | ||
| 60 | * | ||
| 61 | * @param map a <code>ComponentInputMap</code> | ||
| 62 | * | ||
| 63 | * @throws IllegalArgumentException if <code>map</code> | ||
| 64 | * is not a <code>ComponentInputMap</code> | ||
| 65 | * or is not associated with the same component | ||
| 66 | */ | ||
| 67 | public void setParent(InputMap map) { | ||
| 68 | if (getParent() == map) { | ||
| 69 | return; | ||
| 70 | } | ||
| 71 | if (map != null && (!(map instanceof ComponentInputMap) || | ||
| 72 | ((ComponentInputMap)map).getComponent() != getComponent())) { | ||
| 73 | throw new IllegalArgumentException("ComponentInputMaps must have a parent ComponentInputMap associated with the same component"); | ||
| 74 | } | ||
| 75 | super.setParent(map); | ||
| 76 | getComponent().componentInputMapChanged(this); | ||
| 77 | } | ||
| 78 | |||
| 79 | /** | ||
| 80 | * Returns the component the <code>InputMap</code> was created for. | ||
| 81 | */ | ||
| 82 | public JComponent getComponent() { | ||
| 83 | return component; | ||
| 84 | } | ||
| 85 | |||
| 86 | /** | ||
| 87 | * Adds a binding for <code>keyStroke</code> to <code>actionMapKey</code>. | ||
| 88 | * If <code>actionMapKey</code> is null, this removes the current binding | ||
| 89 | * for <code>keyStroke</code>. | ||
| 90 | */ | ||
| 91 | public void put(KeyStroke keyStroke, Object actionMapKey) { | ||
| 92 | super.put(keyStroke, actionMapKey); | ||
| 93 | if (getComponent() != null) { | ||
| 94 | getComponent().componentInputMapChanged(this); | ||
| 95 | } | ||
| 96 | } | ||
| 97 | |||
| 98 | /** | ||
| 99 | * Removes the binding for <code>key</code> from this object. | ||
| 100 | */ | ||
| 101 | public void remove(KeyStroke key) { | ||
| 102 | super.remove(key); | ||
| 103 | if (getComponent() != null) { | ||
| 104 | getComponent().componentInputMapChanged(this); | ||
| 105 | } | ||
| 106 | } | ||
| 107 | |||
| 108 | /** | ||
| 109 | * Removes all the mappings from this object. | ||
| 110 | */ | ||
| 111 | public void clear() { | ||
| 112 | int oldSize = size(); | ||
| 113 | super.clear(); | ||
| 114 | if (oldSize > 0 && getComponent() != null) { | ||
| 115 | getComponent().componentInputMapChanged(this); | ||
| 116 | } | ||
| 117 | } | ||
| 118 | } | ||