The following tables list the members exposed by UndoManager.
Public Constructors
| Name | Description | |
|---|---|---|
 | UndoManager Constructor | Create a UndoManager that is ready to record model modifications, but that does not know about any models yet. |
Public Properties
| Name | Description | |
|---|---|---|
 | ChecksTransactionLevel | Gets or sets whether this undo manager will output warnings to Trace listeners when model changes occur outside of a transaction. |
| CompoundEdits | Gets a list of all of the compound edits. |
| CurrentEdit | Gets the current compound edit for recording additional model change events. |
| CurrentTransactionName | Gets the current transaction name given by StartTransaction. |
| EditToRedo | Gets the current IUndoableEdit to be redone, or null if there is none. |
| EditToUndo | Gets the current IUndoableEdit to be undone, or null if there is none. |
| IsUndoingRedoing | This property is true during a call to Undo or Redo. |
| MaximumEditCount | Gets or sets the maximum number of compound edits that this undo manager will remember. |
| Models | Gets a list of models for which this UndoManager is recording undo/redo information. |
| NestedTransactionNames | Gets a stack of ongoing transaction names. |
| TransactionLevel | Gets the current transaction level. |
| UndoEditIndex | Gets the index into CompoundEdits for the current undoable edit. |
Public Methods
| Name | Description | |
|---|---|---|
 | AddModel | Make sure this undo manager knows about a IDiagramModel for which it is receiving model Changed event notifications. |
| CanRedo | This predicate is true when one can call Redo. |
| CanUndo | This predicate is true when one can call Undo. |
| Clear | Clear all of the Northwoods.GoXam.Model.UndoManager.CompoundEdits and reset all other state. |
| CommitTransaction | Just call EndTransaction, committing the current transaction, with the presentation name for the transaction. |
| FindPrimaryObject | Given an IUndoableEdit return an edited object that represents what was modified. |
| HandleModelChanged | Create an IUndoableEdit for a Changed event. |
| Redo | Restore the state of some models to after the current IUndoableEdit. |
| RemoveModel | Call this method to inform this undo manager that it no longer will be notified of model Changed events. |
| RollbackTransaction | Just call EndTransaction, rolling back the current transaction. |
| StartTransaction | Begin a transaction, where the changes are held by a Northwoods.GoXam.Model.UndoManager.CompoundEdit. |
| ToString | For debugging. |
| Undo | Restore the state of some models to before the current IUndoableEdit. |
Protected Methods
| Name | Description | |
|---|---|---|
 | CommitCompoundEdit | This method is called by EndTransaction when committing a compound edit. |
| EndTransaction | Stop the current transaction, either rolling it back or committing it. |
| SkipEvent | This predicate is responsible for deciding if a ModelChangedEventArgs is not interesting enough to be recorded. |