From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/javax/swing/InputMap.java | 235 ++++++++++++++++++++++++++++ 1 file changed, 235 insertions(+) create mode 100644 libjava/classpath/javax/swing/InputMap.java (limited to 'libjava/classpath/javax/swing/InputMap.java') diff --git a/libjava/classpath/javax/swing/InputMap.java b/libjava/classpath/javax/swing/InputMap.java new file mode 100644 index 000000000..40c43daa4 --- /dev/null +++ b/libjava/classpath/javax/swing/InputMap.java @@ -0,0 +1,235 @@ +/* InputMap.java -- + Copyright (C) 2002, 2004, 2006, Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package javax.swing; + +import java.io.Serializable; +import java.util.Arrays; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.Set; + +/** + * Maps {@link KeyStroke}s to arbitrary objects, usually Strings. This + * is used in combination with {@link ActionMap}s. + * + * If a component receives an input event, this is looked up in + * the component's InputMap. The result is an object which + * serves as a key to the component's ActionMap. Finally + * the Action that is stored is executed. + * + * @author Andrew Selkirk + * @author Michael Koch + * + * @since 1.3 + */ +public class InputMap + implements Serializable +{ + private static final long serialVersionUID = -5429059542008604257L; + + /** + * Storage for the KeyStroke --> Object mappings. + */ + private Map inputMap; + + /** + * An optional parent map. + */ + private InputMap parent; + + /** + * Creates a new InputMap instance. This default instance + * contains no mappings and has no parent. + */ + public InputMap() + { + // nothing to do + } + + /** + * Returns the binding for the specified keystroke, if there is one. + * + * @param keystroke the key of the entry (null is ignored). + * + * @return The binding associated with the specified keystroke (or + * null). + */ + public Object get(KeyStroke keystroke) + { + Object result = null; + if (inputMap != null) + result = inputMap.get(keystroke); + + if (result == null && parent != null) + result = parent.get(keystroke); + return result; + } + + /** + * Puts a new entry into the InputMap. If + * actionMapKey is null any existing entry will be + * removed. + * + * @param keystroke the keystroke for the entry (null is + * ignored). + * @param actionMapKey the action (null permitted). + */ + public void put(KeyStroke keystroke, Object actionMapKey) + { + if (keystroke == null) + return; + if (inputMap == null) + inputMap = new HashMap(); + if (actionMapKey == null) + inputMap.remove(keystroke); + else + inputMap.put(keystroke, actionMapKey); + } + + /** + * Removes an entry from this InputMap. Note that this will + * not remove any entry from the parent map, if there is one. + * + * @param keystroke the key of the entry to remove (null is + * ignored). + */ + public void remove(KeyStroke keystroke) + { + if (inputMap != null) + inputMap.remove(keystroke); + } + + /** + * Returns the parent of this InputMap. The default value + * is null. + * + * @return The parent map (possibly null). + * + * @see #setParent(InputMap) + */ + public InputMap getParent() + { + return parent; + } + + /** + * Sets a parent for this InputMap. If a parent is specified, + * the {@link #get(KeyStroke)} method will look in the parent if it cannot + * find an entry in this map. + * + * @param parentMap the new parent (null permitted). + * + * @see #getParent() + */ + public void setParent(InputMap parentMap) + { + parent = parentMap; + } + + /** + * Returns the number of entries in this InputMap. This count + * does not include any entries from the parent map, if there is one. + * + * @return The number of entries. + */ + public int size() + { + int result = 0; + if (inputMap != null) + result = inputMap.size(); + return result; + } + + /** + * Clears the entries from this InputMap. The parent map, if + * there is one, is not cleared. + */ + public void clear() + { + if (inputMap != null) + inputMap.clear(); + } + + /** + * Returns all keys of entries in this InputMap. This does not + * include keys defined in the parent, if there is one (use the + * {@link #allKeys()} method for that case). + *

+ * Following the behaviour of the reference implementation, this method will + * return null when no entries have been added to the map, + * and a zero length array if entries have been added but subsequently + * removed (or cleared) from the map. + * + * @return An array of keys (may be null or have zero length). + */ + public KeyStroke[] keys() + { + if (inputMap != null) + { + KeyStroke[] array = new KeyStroke[size()]; + return (KeyStroke[]) inputMap.keySet().toArray(array); + } + return null; + } + + /** + * Returns all keys of entries in this InputMap and all its + * parents. + * + * @return An array of keys (may be null or have zero length). + */ + public KeyStroke[] allKeys() + { + Set set = new HashSet(); + + if (parent != null) + { + Object[] parentKeys = parent.allKeys(); + if (parentKeys != null) + set.addAll(Arrays.asList(parentKeys)); + } + if (inputMap != null) + set.addAll(inputMap.keySet()); + if (set.size() == 0) + return null; + KeyStroke[] array = new KeyStroke[set.size()]; + return (KeyStroke[]) set.toArray(array); + } + +} -- cgit v1.2.3