1 /*
   2  * Copyright (c) 1997, 2008, 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

  38  * object is told to restore it's state from these Hashtables.</P>
  39  *
  40  * A state edit is used as follows:
  41  * <PRE>
  42  *      // Create the edit during the "before" state of the object
  43  *      StateEdit newEdit = new StateEdit(myObject);
  44  *      // Modify the object
  45  *      myObject.someStateModifyingMethod();
  46  *      // "end" the edit when you are done modifying the object
  47  *      newEdit.end();
  48  * </PRE>
  49  *
  50  * <P><EM>Note that when a StateEdit ends, it removes redundant state from
  51  * the Hashtables - A state Hashtable is not guaranteed to contain all
  52  * keys/values placed into it when the state is stored!</EM></P>
  53  *
  54  * @see StateEditable
  55  *
  56  * @author Ray Ryan
  57  */
  58 
  59 public class StateEdit
  60         extends AbstractUndoableEdit {
  61 
  62     protected static final String RCSID = "$Id: StateEdit.java,v 1.6 1997/10/01 20:05:51 sandipc Exp $";
  63 
  64     //
  65     // Attributes
  66     //
  67 
  68     /**
  69      * The object being edited
  70      */
  71     protected StateEditable object;
  72 
  73     /**
  74      * The state information prior to the edit
  75      */
  76     protected Hashtable<Object,Object> preState;
  77 
  78     /**

   1 /*
   2  * Copyright (c) 1997, 2014, 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

  38  * object is told to restore it's state from these Hashtables.</P>
  39  *
  40  * A state edit is used as follows:
  41  * <PRE>
  42  *      // Create the edit during the "before" state of the object
  43  *      StateEdit newEdit = new StateEdit(myObject);
  44  *      // Modify the object
  45  *      myObject.someStateModifyingMethod();
  46  *      // "end" the edit when you are done modifying the object
  47  *      newEdit.end();
  48  * </PRE>
  49  *
  50  * <P><EM>Note that when a StateEdit ends, it removes redundant state from
  51  * the Hashtables - A state Hashtable is not guaranteed to contain all
  52  * keys/values placed into it when the state is stored!</EM></P>
  53  *
  54  * @see StateEditable
  55  *
  56  * @author Ray Ryan
  57  */
  58 @SuppressWarnings("serial") // Same-version serialization only
  59 public class StateEdit
  60         extends AbstractUndoableEdit {
  61 
  62     protected static final String RCSID = "$Id: StateEdit.java,v 1.6 1997/10/01 20:05:51 sandipc Exp $";
  63 
  64     //
  65     // Attributes
  66     //
  67 
  68     /**
  69      * The object being edited
  70      */
  71     protected StateEditable object;
  72 
  73     /**
  74      * The state information prior to the edit
  75      */
  76     protected Hashtable<Object,Object> preState;
  77 
  78     /**