[Bprocessor-commit] model/src/net/sourceforge/bprocessor/model Project.java,1.44,1.45

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

Update of /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv25274/src/net/sourceforge/bprocessor/model

Modified Files:
	Project.java 
Log Message:
First version of Undo implemented

Index: Project.java
===================================================================
RCS file: /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model/Project.java,v
retrieving revision 1.44
retrieving revision 1.45
diff -C2 -d -r1.44 -r1.45
*** Project.java	17 Mar 2006 09:55:27 -0000	1.44
--- Project.java	20 Mar 2006 09:09:31 -0000	1.45
***************
*** 16,19 ****
--- 16,22 ----
  import java.util.Set;
  
+ import net.sourceforge.bprocessor.model.xml.Bprocessor;
+ import net.sourceforge.bprocessor.model.xml.PersistenceManager;
+ 
  import org.apache.log4j.Logger;
  /**
***************
*** 66,69 ****
--- 69,78 ----
    private Space activeSpace;
    
+   /** Previous state */
+   private Bprocessor previousState;
+   
+   /** Current state */
+   private Bprocessor currentState;
+   
    /**
     * Get the instance
***************
*** 628,631 ****
--- 637,662 ----
    
    /**
+    * Checkpoint the B-model
+    */
+   public void checkpoint() {
+     previousState = currentState;
+     currentState = PersistenceManager.externalize();
+   }
+   
+   /**
+    * Revert to previous checkpoint and swap current
+    * with previous.
+    */
+   public void revert() {
+     if (previousState != null) {
+       Bprocessor temporary = previousState;
+       clear();
+       PersistenceManager.internalize(previousState);
+       previousState = currentState;
+       currentState = temporary;
+     } 
+   }
+   
+   /**
     * Attribute Info
     * @param info String