[Bprocessor-commit] model/src/net/sourceforge/bprocessor/model History.java, 1.1, 1.2

[Michael L. <he...@us...>]

Update of /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv9671/src/net/sourceforge/bprocessor/model

Modified Files:
	History.java 
Log Message:
History class cleared

Index: History.java
===================================================================
RCS file: /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model/History.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -C2 -d -r1.1 -r1.2
*** History.java	11 Jan 2006 10:19:58 -0000	1.1
--- History.java	18 Oct 2007 09:19:28 -0000	1.2
***************
*** 8,107 ****
  package net.sourceforge.bprocessor.model;
  
- import java.util.Stack;
- 
  /**
!  * The History for containing commands for undo and redo support
   */
  public class History {
-   /** The undo stack */
-   private Stack undoStack;
-   
-   /** The redo stack */
-   private Stack redoStack;
-   
-   /** A singular history instance */
-   private static History instance = new History();
-   
-   /**
-    * Return the singular history instance
-    * @return The history
-    */
-   public static History getInstance() {
-     return instance;
-   }
-   
-   /**
-    * Constructor for History
-    */
-   public History() {
-     undoStack = new Stack();
-     redoStack = new Stack();
-   }
-   
-   /**
-    * Apply a command, clear the redo stack and
-    * push the new command on the undo stack.
-    * @param command The command to apply
-    */
-   public void apply(Command command) {
-     command.apply();
-     redoStack.clear();
-     undoStack.push(command);
-   }
-   
-   /**
-    * Undo the command on top of undo stack and push
-    * it on the redo stack
-    */
-   public void undo() {
-     if (!undoStack.isEmpty()) {
-       Command top = (Command) undoStack.pop();
-       top.undo();
-       redoStack.push(top);
-     }
-   }
-   
-   /**
-    * Redo the command on top of redo stack and push
-    * it on the undo stack
-    */
-   public void redo() {
-     if (!redoStack.isEmpty()) {
-       Command top = (Command) redoStack.pop();
-       top.redo();
-       undoStack.push(top);
-     }
-   }
    
-   /**
-    * Return the top of the undo stack or null if empty.
-    * @return The top of the undo stack
-    */
-   public Command undoTop() {
-     if (!undoStack.isEmpty()) {
-       return (Command) undoStack.peek();
-     } else {
-       return null;
-     }
-   }
-   
-   /**
-    * Return the top of the redo stack or null if empty.
-    * @return The top of the redo stack
-    */
-   public Command redoTop() {
-     if (!redoStack.isEmpty()) {
-       return (Command) redoStack.peek();
-     } else {
-       return null;
-     }
-   } 
-   
-   /**
-    * Clear this History
-    */
-   public void clear() {
-     undoStack.clear();
-     redoStack.clear();
-   }
  }
--- 8,15 ----
  package net.sourceforge.bprocessor.model;
  
  /**
!  * History
   */
  public class History {
    
  }