UndoManager<T> Class
Assembly: Topten.RichTextKit.dll
Namespace: Topten.RichTextKit.Utils
Implements an manager for undo operations
public class UndoManager<T>Inheritance
UndoManager<T> → object
Type Parameters
| T | A context object type (eg: document type) |
Constructors
| UndoManager(T) | Constructs a new undo manager |
Properties
| CanRedo | Check if can redo |
| CanUndo | Check if can undo |
| IsModified | Checks if the document is currently modified |
| RedoDescription | Gets the description of the next redo operation |
| UndoDescription | Gets the description of the next undo operation |
Methods
| Clear() | Clear and reset the undo manager |
| CloseGroup() | Ends the current group operation |
| Do(UndoUnit<T>) | Execute an undo unit and add it to the manager |
| GetRedoUnit() | Retrieves the unit that would be executed on Redo |
| GetUndoUnit() | Retrieves the unit that would be executed on Undo |
| GetUnsealedUnit() | Get the current unsealed unit |
| MarkUnmodified() | Mark the document as currently unmodified |
| OnEndOperation() | Notifies that an operation (or group of operations) has finished |
| OnModifiedChanged() | Notifies when the modified state of the document changes |
| OnStartOperation() | Notifies that an operation (or group of operations) is about to start |
| OpenGroup(string) | Stars a group operation |
| OpenGroup(UndoGroup<T>) | Stars a group operation |
| Redo() | Redoes previously undone operations |
| Seal() | Seals the last item to prevent changes |
| Undo() | Undoes the last performed operation |
Events
| EndOperation | Event fired when any operation (or group of operations) ends |
| ModifiedChanged | Fired when the modified state of the document changes |
| StartOperation | Event fired when any operation (or group of operations) starts |