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Diffstat (limited to 'libjava/javax/swing/undo/AbstractUndoableEdit.java')
| -rw-r--r-- | libjava/javax/swing/undo/AbstractUndoableEdit.java | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/libjava/javax/swing/undo/AbstractUndoableEdit.java b/libjava/javax/swing/undo/AbstractUndoableEdit.java new file mode 100644 index 00000000000..e98b87cb3ae --- /dev/null +++ b/libjava/javax/swing/undo/AbstractUndoableEdit.java @@ -0,0 +1,214 @@ +/* AbstractTableModel.java -- + Copyright (C) 2002 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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 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.undo; + +// Imports +import java.io.Serializable; + +/** + * AbstractUndoableEdit + * @author Andrew Selkirk + */ +public class AbstractUndoableEdit extends Object + implements UndoableEdit, + Serializable { + + //------------------------------------------------------------- + // Constants -------------------------------------------------- + //------------------------------------------------------------- + + /** + * String returned by getRedoPresentationName() + */ + protected static String RedoName = "Redo"; + + /** + * String returned by getUndoPresentationName() + */ + protected static String UndoName = "Undo"; + + + //------------------------------------------------------------- + // Variables -------------------------------------------------- + //------------------------------------------------------------- + + /** + * TODO + */ + private boolean hasBeenDone = false; + + /** + * The edit is alive + */ + private boolean alive = true; + + + //------------------------------------------------------------- + // Initialization --------------------------------------------- + //------------------------------------------------------------- + + /** + * Create new AbstractUndoableEdit + */ + public AbstractUndoableEdit() { + } // AbstractUndoableEdit() + + + //------------------------------------------------------------- + // Interface: UndoableEdit ------------------------------------ + //------------------------------------------------------------- + + /** + * addEdit + * @param anEdit TODO + * @returns TODO + */ + public boolean addEdit(UndoableEdit anEdit) { + return false; + } // addEdit() + + /** + * canRedo() + * @returns true if redoable, false otherwise + */ + public boolean canRedo() { + if (alive == true && hasBeenDone == false) { + return true; + } // if + return false; + } // canRedo() + + /** + * canUndo() + * @returns true if undoable, false otherwise + */ + public boolean canUndo() { + if (alive == true && hasBeenDone == true) { + return true; + } // if + return false; + } // canUndo() + + /** + * die + */ + public void die() { + alive = false; + } // die() + + /** + * getPresentation + * @returns TODO + */ + public String getPresentationName() { + return ""; + } // getPresentationName() + + /** + * getRedoPresentationName + * @returns TODO + */ + public String getRedoPresentationName() { + if (getPresentationName().equals("") == true) { + return RedoName; + } else { + return RedoName + " " + getPresentationName(); + } + } // getRedoPresentationName() + + /** + * getUndoPresentationName + * @returns TODO + */ + public String getUndoPresentationName() { + if (getPresentationName().equals("") == true) { + return UndoName; + } else { + return UndoName + " " + getPresentationName(); + } + } // getUndoPresentationName() + + /** + * isSignificant + * @returns true + */ + public boolean isSignificant() { + return true; + } // isSignificant() + + /** + * redo + * @throws CannotRedoException TODO + */ + public void redo() throws CannotRedoException { + if (canRedo() == false) { + throw new CannotRedoException(); + } + hasBeenDone = true; + } // redo() + + /** + * replaceEdit + * @param anEdit TODO + * @returns TODO + */ + public boolean replaceEdit(UndoableEdit anEdit) { + return false; + } // replaceEdit() + + /** + * String representation + * @returns String representation + */ + public String toString() { + return null; // TODO + } // toString() + + /** + * undo + * @throws CannotUndoException TODO + */ + public void undo() throws CannotUndoException { + if (canUndo() == false) { + throw new CannotUndoException(); + } + hasBeenDone = false; + } // undo() + + +} // AbstractUndoableEdit |
