Source Code Cross Referenced for MenuShortcut.java in  » 6.0-JDK-Modules » j2me » java » awt » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.awt 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * @(#)MenuShortcut.java	1.27 06/10/10
003:         *
004:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation. 
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt). 
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA 
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions. 
025:         *
026:         */
027:        package java.awt;
028:
029:        import java.awt.event.KeyEvent;
030:
031:        /**
032:         * A class which represents a keyboard accelerator for a MenuItem.
033:         *
034:         * @version %I, 08/19/02
035:         * @author Thomas Ball
036:         */
037:        public class MenuShortcut implements  java.io.Serializable {
038:            int key;
039:            boolean usesShift;
040:            /*
041:             * JDK 1.1 serialVersionUID
042:             */
043:            private static final long serialVersionUID = 143448358473180225L;
044:
045:            /**
046:             * Constructs a new MenuShortcut for the specified key.
047:             * @param key the raw keycode for this MenuShortcut, as would be returned
048:             * in the keyCode field of a KeyEvent if this key were pressed.
049:             * @exception UnsupportedOperationException if the class is not supported
050:             **/
051:            public MenuShortcut(int key) {
052:                this (key, false);
053:            }
054:
055:            /**
056:             * Constructs a new MenuShortcut for the specified key.
057:             * @param key the raw keycode for this MenuShortcut, as would be returned
058:             * in the keyCode field of a KeyEvent if this key were pressed.
059:             * @param useShiftModifier indicates whether this MenuShortcut is invoked
060:             * with the SHIFT key down.
061:             * @exception UnsupportedOperationException if the class is not supported
062:             **/
063:            public MenuShortcut(int key, boolean useShiftModifier) {
064:                this .key = key;
065:                this .usesShift = useShiftModifier;
066:            }
067:
068:            /**
069:             * Return the raw keycode of this MenuShortcut.
070:             */
071:            public int getKey() {
072:                return key;
073:            }
074:
075:            /**
076:             * Return whether this MenuShortcut must be invoked using the SHIFT key.
077:             */
078:            public boolean usesShiftModifier() {
079:                return usesShift;
080:            }
081:
082:            /**
083:             * Returns whether this MenuShortcut is the same as another:
084:             * equality is defined to mean that both MenuShortcuts use the same key
085:             * and both either use or don't use the SHIFT key.
086:             * @param s the MenuShortcut to compare with this.
087:             */
088:            public boolean equals(MenuShortcut s) {
089:                return (s != null && (s.getKey() == key) && (s
090:                        .usesShiftModifier() == usesShift));
091:            }
092:
093:            /**
094:             * Returns whether this MenuShortcut is the same as another:
095:             * equality is defined to mean that both MenuShortcuts use the same key
096:             * and both either use or don't use the SHIFT key.
097:             * @param obj the Object to compare with this.
098:             * @return <code>true</code> if this MenuShortcut is the same as another,
099:             * <code>false</code> otherwise.
100:             * @since 1.2
101:             */
102:            public boolean equals(Object obj) {
103:                if (obj instanceof  MenuShortcut) {
104:                    return equals((MenuShortcut) obj);
105:                }
106:                return false;
107:            }
108:
109:            /**
110:             * Returns the hashcode for this MenuShortcut.
111:             * @return the hashcode for this MenuShortcut.
112:             * @since 1.2
113:             */
114:            public int hashCode() {
115:                return (usesShift) ? (~key) : key;
116:            }
117:
118:            /**
119:             * Returns an internationalized description of the MenuShortcut.
120:             */
121:            public String toString() {
122:                int modifiers = Toolkit.getDefaultToolkit()
123:                        .getMenuShortcutKeyMask();
124:                if (usesShiftModifier()) {
125:                    modifiers |= Event.SHIFT_MASK;
126:                }
127:                return KeyEvent.getKeyModifiersText(modifiers) + "+"
128:                        + KeyEvent.getKeyText(key);
129:            }
130:
131:            protected String paramString() {
132:                String str = "key=" + key;
133:                if (usesShiftModifier()) {
134:                    str += ",usesShiftModifier";
135:                }
136:                return str;
137:            }
138:        }
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