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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 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 sun.swing; | ||
| 26 | |||
| 27 | import java.beans.PropertyChangeListener; | ||
| 28 | |||
| 29 | import javax.swing.Action; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * UIAction is the basis of all of basic's action classes that are used in | ||
| 33 | * an ActionMap. Subclasses need to override <code>actionPerformed</code>. | ||
| 34 | * <p> | ||
| 35 | * A typical subclass will look like: | ||
| 36 | * <pre> | ||
| 37 | * private static class Actions extends UIAction { | ||
| 38 | * Actions(String name) { | ||
| 39 | * super(name); | ||
| 40 | * } | ||
| 41 | * | ||
| 42 | * public void actionPerformed(ActionEvent ae) { | ||
| 43 | * if (getName() == "selectAll") { | ||
| 44 | * selectAll(); | ||
| 45 | * } | ||
| 46 | * else if (getName() == "cancelEditing") { | ||
| 47 | * cancelEditing(); | ||
| 48 | * } | ||
| 49 | * } | ||
| 50 | * } | ||
| 51 | * </pre> | ||
| 52 | * <p> | ||
| 53 | * Subclasses that wish to conditionalize the enabled state should override | ||
| 54 | * <code>isEnabled(Component)</code>, and be aware that the passed in | ||
| 55 | * <code>Component</code> may be null. | ||
| 56 | * | ||
| 57 | * @see com.sun.java.swing.ExtendedAction | ||
| 58 | * @see javax.swing.Action | ||
| 59 | * @author Scott Violet | ||
| 60 | */ | ||
| 61 | public abstract class UIAction implements Action { | ||
| 62 | private String name; | ||
| 63 | |||
| 64 | public UIAction(String name) { | ||
| 65 | this.name = name; | ||
| 66 | } | ||
| 67 | |||
| 68 | public final String getName() { | ||
| 69 | return name; | ||
| 70 | } | ||
| 71 | |||
| 72 | public Object getValue(String key) { | ||
| 73 | if (key == NAME) { | ||
| 74 | return name; | ||
| 75 | } | ||
| 76 | return null; | ||
| 77 | } | ||
| 78 | |||
| 79 | // UIAction is not mutable, this does nothing. | ||
| 80 | public void putValue(String key, Object value) { | ||
| 81 | } | ||
| 82 | |||
| 83 | // UIAction is not mutable, this does nothing. | ||
| 84 | public void setEnabled(boolean b) { | ||
| 85 | } | ||
| 86 | |||
| 87 | /** | ||
| 88 | * Cover method for <code>isEnabled(null)</code>. | ||
| 89 | */ | ||
| 90 | public final boolean isEnabled() { | ||
| 91 | return isEnabled(null); | ||
| 92 | } | ||
| 93 | |||
| 94 | /** | ||
| 95 | * Subclasses that need to conditionalize the enabled state should | ||
| 96 | * override this. Be aware that <code>sender</code> may be null. | ||
| 97 | * | ||
| 98 | * @param sender Widget enabled state is being asked for, may be null. | ||
| 99 | */ | ||
| 100 | public boolean isEnabled(Object sender) { | ||
| 101 | return true; | ||
| 102 | } | ||
| 103 | |||
| 104 | // UIAction is not mutable, this does nothing. | ||
| 105 | public void addPropertyChangeListener(PropertyChangeListener listener) { | ||
| 106 | } | ||
| 107 | |||
| 108 | // UIAction is not mutable, this does nothing. | ||
| 109 | public void removePropertyChangeListener(PropertyChangeListener listener) { | ||
| 110 | } | ||
| 111 | } | ||