Class UndoHistory

java.lang.Object
org.apache.jmeter.gui.UndoHistory
All Implemented Interfaces:
Serializable, EventListener, TreeModelListener
public class UndoHistory extends Object implements TreeModelListener, Serializable
This class serves storing Test Tree state and navigating through it to give the undo/redo ability for test plan changes
Since:
2.12
See Also:

  • Constructor Details

    • UndoHistory

      public UndoHistory()

  • Method Details

    • clear

      public void clear()
      Clears the undo history

    • add

      public void add(JMeterTreeModel treeModel, String comment)
      Add tree model copy to the history

      This method relies on the rule that the record in history made AFTER change has been made to test plan

      Parameters:
      treeModel - JMeterTreeModel
      comment - String

    • moveInHistory

      public void moveInHistory(int offset, JMeterTreeModel acceptorModel)
      Goes through undo history, changing GUI
      Parameters:
      offset - the direction to go to, usually -1 for undo or 1 for redo
      acceptorModel - TreeModel to accept the changes

    • canRedo

      public boolean canRedo()
      Returns:
      true if remaing items

    • canUndo

      public boolean canUndo()
      Returns:
      true if not at first element

    • treeNodesChanged

      public void treeNodesChanged(TreeModelEvent tme)
      Record the changes in the node as the undo step
      Specified by:
      treeNodesChanged in interface TreeModelListener
      Parameters:
      tme - TreeModelEvent with event details

    • treeNodesInserted

      public void treeNodesInserted(TreeModelEvent tme)
      Record adding nodes as the undo step
      Specified by:
      treeNodesInserted in interface TreeModelListener
      Parameters:
      tme - TreeModelEvent with event details

    • treeNodesRemoved

      public void treeNodesRemoved(TreeModelEvent tme)
      Record deleting nodes as the undo step
      Specified by:
      treeNodesRemoved in interface TreeModelListener
      Parameters:
      tme - TreeModelEvent with event details

    • treeStructureChanged

      public void treeStructureChanged(TreeModelEvent tme)
      Record some other change
      Specified by:
      treeStructureChanged in interface TreeModelListener
      Parameters:
      tme - TreeModelEvent with event details

    • registerHistoryListener

      public void registerHistoryListener(UndoHistory.HistoryListener listener)
      Register HistoryListener
      Parameters:
      listener - to add to our listeners