Class GanttUndoRedoManager
java.lang.Object
org.eclipse.nebula.widgets.ganttchart.undoredo.GanttUndoRedoManager
public class GanttUndoRedoManager
extends java.lang.Object
Deals with Undo/Redo events in the chart. Implemented per Command-structure standards.
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Field Summary
Fields Modifier and Type Field Description static int
STACK_SIZE
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Constructor Summary
Constructors Constructor Description GanttUndoRedoManager(GanttComposite parent, int maxStackSize)
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Method Summary
Modifier and Type Method Description void
addUndoRedoListener(IUndoRedoListener listener)
Adds a listener to be notified when undo/redo possibilities changeboolean
canRedo()
Whether a Redo is possible.boolean
canUndo()
Whether an Undo is possible.void
clear()
Removes all undo/redo events from the stackint
getCurrentIndex()
The current index of where the undo/redo marker isjava.util.List
getUndoRedoEvents()
void
record(IUndoRedoCommand command)
Records an undoable/redoable commandboolean
redo()
Redoes the last GanttChart action.void
removeUndoRedoListener(IUndoRedoListener listener)
Removes a listener from being notified when undo/redo possibilities changevoid
setCurrentIndex(int currentIndex)
void
setMaxStackSize(int stackSize)
Sets a new max undo/redo sack size, value must be a positive integer or it is ignored.boolean
undo()
Undoes the last GanttChart action.
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Field Details
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STACK_SIZE
public static final int STACK_SIZE- See Also:
- Constant Field Values
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Constructor Details
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Method Details
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getUndoRedoEvents
public java.util.List getUndoRedoEvents() -
addUndoRedoListener
Adds a listener to be notified when undo/redo possibilities change- Parameters:
listener
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removeUndoRedoListener
Removes a listener from being notified when undo/redo possibilities change- Parameters:
listener
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record
Records an undoable/redoable command- Parameters:
command
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clear
public void clear()Removes all undo/redo events from the stack -
canUndo
public boolean canUndo()Whether an Undo is possible.- Returns:
- true if user can Undo
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undo
public boolean undo()Undoes the last GanttChart action.- Returns:
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redo
public boolean redo()Redoes the last GanttChart action.- Returns:
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canRedo
public boolean canRedo()Whether a Redo is possible.- Returns:
- true if user can Redo
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getCurrentIndex
public int getCurrentIndex()The current index of where the undo/redo marker is- Returns:
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setCurrentIndex
public void setCurrentIndex(int currentIndex)- Parameters:
currentIndex
- The current index of where the undo/redo marker is
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setMaxStackSize
public void setMaxStackSize(int stackSize)Sets a new max undo/redo sack size, value must be a positive integer or it is ignored.- Parameters:
stackSize
- new max undo/redo stack size
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