214 lines
5.0 KiB
Java
214 lines
5.0 KiB
Java
/* InputMap.java --
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Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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/**
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* @author Andrew Selkirk
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* @author Michael Koch
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*
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* @since 1.3
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*/
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public class InputMap
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implements Serializable
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{
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private static final long serialVersionUID = -5429059542008604257L;
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/**
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* inputMap
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*/
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private Map inputMap = new HashMap();
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/**
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* parent
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*/
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private InputMap parent;
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/**
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* Creates a new <code>InputMap</code> instance.
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*/
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public InputMap()
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{
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// TODO
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}
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/**
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* Returns the binding for keystroke.
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*
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* @param key the key of the enty
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*
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* @return the binding associated with keystroke may be null
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*/
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public Object get(KeyStroke keystroke)
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{
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Object result = inputMap.get(keystroke);
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if (result == null && parent != null)
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result = parent.get(keystroke);
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return result;
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}
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/**
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* Puts a new entry into the <code>InputMap</code>.
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* If actionMapKey is null an existing entry will be removed.
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*
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* @param keystroke the keystroke for the entry
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* @param actionMapKey the action.
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*/
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public void put(KeyStroke keystroke, Object actionMapKey)
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{
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if (actionMapKey == null)
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inputMap.remove(keystroke);
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else
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inputMap.put(keystroke, actionMapKey);
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}
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/**
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* Remove an entry from the <code>InputMap</code>.
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*
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* @param key the key of the entry to remove
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*/
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public void remove(KeyStroke keystroke)
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{
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inputMap.remove(keystroke);
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}
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/**
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* Returns the parent of this <code>InputMap</code>.
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*
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* @return the parent, may be null.
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*/
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public InputMap getParent()
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{
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return parent;
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}
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/**
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* Sets a parent for this <code>InputMap</code>.
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*
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* @param parentMap the new parent
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*/
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public void setParent(InputMap parentMap)
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{
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parent = parentMap;
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}
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/**
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* Returns the number of entries in this <code>InputMap</code>.
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*
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* @return the number of entries
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*/
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public int size()
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{
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return inputMap.size();
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}
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/**
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* Clears the <code>InputMap</code>.
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*/
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public void clear()
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{
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inputMap.clear();
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}
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/**
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* Returns all keys of entries in this <code>InputMap</code>.
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*
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* @return an array of keys
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*/
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public KeyStroke[] keys()
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{
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KeyStroke[] array = new KeyStroke[size()];
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return (KeyStroke[]) inputMap.keySet().toArray(array);
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}
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/**
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* Returns all keys of entries in this <code>InputMap</code>
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* and all its parents.
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*
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* @return an array of keys
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*/
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public KeyStroke[] allKeys()
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{
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Set set = new HashSet();
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if (parent != null)
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set.addAll(Arrays.asList(parent.allKeys()));
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set.addAll(inputMap.keySet());
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KeyStroke[] array = new KeyStroke[size()];
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return (KeyStroke[]) set.toArray(array);
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}
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/**
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* writeObject
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*
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* @param stream the stream to write to
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*
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* @exception IOException If an error occurs
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*/
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private void writeObject(ObjectOutputStream stream) throws IOException
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{
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// TODO
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}
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/**
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* readObject
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*
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* @param stream the stream to read from
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*
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* @exception ClassNotFoundException If the serialized class cannot be found
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* @exception IOException If an error occurs
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*/
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private void readObject(ObjectInputStream stream)
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throws ClassNotFoundException, IOException
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{
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// TODO
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}
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}
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