--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/swing/InputMap.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,231 @@
+/*
+ * Copyright 1999-2003 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+package javax.swing;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.Set;
+
+/**
+ * <code>InputMap</code> provides a binding between an input event
+ * (currently only <code>KeyStroke</code>s are used)
+ * and an <code>Object</code>. <code>InputMap</code>s
+ * are usually used with an <code>ActionMap</code>,
+ * to determine an <code>Action</code> to perform
+ * when a key is pressed.
+ * An <code>InputMap</code> can have a parent
+ * that is searched for bindings not defined in the <code>InputMap</code>.
+ * <p>As with <code>ActionMap</code> if you create a cycle, eg:
+ * <pre>
+ * InputMap am = new InputMap();
+ * InputMap bm = new InputMap():
+ * am.setParent(bm);
+ * bm.setParent(am);
+ * </pre>
+ * some of the methods will cause a StackOverflowError to be thrown.
+ *
+ * @author Scott Violet
+ * @since 1.3
+ */
+public class InputMap implements Serializable {
+ /** Handles the mapping between KeyStroke and Action name. */
+ private transient ArrayTable arrayTable;
+ /** Parent that handles any bindings we don't contain. */
+ private InputMap parent;
+
+
+ /**
+ * Creates an <code>InputMap</code> with no parent and no mappings.
+ */
+ public InputMap() {
+ }
+
+ /**
+ * Sets this <code>InputMap</code>'s parent.
+ *
+ * @param map the <code>InputMap</code> that is the parent of this one
+ */
+ public void setParent(InputMap map) {
+ this.parent = map;
+ }
+
+ /**
+ * Gets this <code>InputMap</code>'s parent.
+ *
+ * @return map the <code>InputMap</code> that is the parent of this one,
+ * or null if this <code>InputMap</code> has no parent
+ */
+ public InputMap getParent() {
+ return parent;
+ }
+
+ /**
+ * Adds a binding for <code>keyStroke</code> to <code>actionMapKey</code>.
+ * If <code>actionMapKey</code> is null, this removes the current binding
+ * for <code>keyStroke</code>.
+ */
+ public void put(KeyStroke keyStroke, Object actionMapKey) {
+ if (keyStroke == null) {
+ return;
+ }
+ if (actionMapKey == null) {
+ remove(keyStroke);
+ }
+ else {
+ if (arrayTable == null) {
+ arrayTable = new ArrayTable();
+ }
+ arrayTable.put(keyStroke, actionMapKey);
+ }
+ }
+
+ /**
+ * Returns the binding for <code>keyStroke</code>, messaging the
+ * parent <code>InputMap</code> if the binding is not locally defined.
+ */
+ public Object get(KeyStroke keyStroke) {
+ if (arrayTable == null) {
+ InputMap parent = getParent();
+
+ if (parent != null) {
+ return parent.get(keyStroke);
+ }
+ return null;
+ }
+ Object value = arrayTable.get(keyStroke);
+
+ if (value == null) {
+ InputMap parent = getParent();
+
+ if (parent != null) {
+ return parent.get(keyStroke);
+ }
+ }
+ return value;
+ }
+
+ /**
+ * Removes the binding for <code>key</code> from this
+ * <code>InputMap</code>.
+ */
+ public void remove(KeyStroke key) {
+ if (arrayTable != null) {
+ arrayTable.remove(key);
+ }
+ }
+
+ /**
+ * Removes all the mappings from this <code>InputMap</code>.
+ */
+ public void clear() {
+ if (arrayTable != null) {
+ arrayTable.clear();
+ }
+ }
+
+ /**
+ * Returns the <code>KeyStroke</code>s that are bound in this <code>InputMap</code>.
+ */
+ public KeyStroke[] keys() {
+ if (arrayTable == null) {
+ return null;
+ }
+ KeyStroke[] keys = new KeyStroke[arrayTable.size()];
+ arrayTable.getKeys(keys);
+ return keys;
+ }
+
+ /**
+ * Returns the number of <code>KeyStroke</code> bindings.
+ */
+ public int size() {
+ if (arrayTable == null) {
+ return 0;
+ }
+ return arrayTable.size();
+ }
+
+ /**
+ * Returns an array of the <code>KeyStroke</code>s defined in this
+ * <code>InputMap</code> and its parent. This differs from <code>keys()</code> in that
+ * this method includes the keys defined in the parent.
+ */
+ public KeyStroke[] allKeys() {
+ int count = size();
+ InputMap parent = getParent();
+
+ if (count == 0) {
+ if (parent != null) {
+ return parent.allKeys();
+ }
+ return keys();
+ }
+ if (parent == null) {
+ return keys();
+ }
+ KeyStroke[] keys = keys();
+ KeyStroke[] pKeys = parent.allKeys();
+
+ if (pKeys == null) {
+ return keys;
+ }
+ if (keys == null) {
+ // Should only happen if size() != keys.length, which should only
+ // happen if mutated from multiple threads (or a bogus subclass).
+ return pKeys;
+ }
+
+ HashMap keyMap = new HashMap();
+ int counter;
+
+ for (counter = keys.length - 1; counter >= 0; counter--) {
+ keyMap.put(keys[counter], keys[counter]);
+ }
+ for (counter = pKeys.length - 1; counter >= 0; counter--) {
+ keyMap.put(pKeys[counter], pKeys[counter]);
+ }
+
+ KeyStroke[] allKeys = new KeyStroke[keyMap.size()];
+
+ return (KeyStroke[])keyMap.keySet().toArray(allKeys);
+ }
+
+ private void writeObject(ObjectOutputStream s) throws IOException {
+ s.defaultWriteObject();
+
+ ArrayTable.writeArrayTable(s, arrayTable);
+ }
+
+ private void readObject(ObjectInputStream s) throws ClassNotFoundException,
+ IOException {
+ s.defaultReadObject();
+ for (int counter = s.readInt() - 1; counter >= 0; counter--) {
+ put((KeyStroke)s.readObject(), s.readObject());
+ }
+ }
+}