Class TextViewerUndoManager

    • Constructor Summary

      Constructors 
      Constructor Description
      TextViewerUndoManager​(int undoLevel)
      Creates a new undo manager who remembers the specified number of edit commands.
    • Constructor Detail

      • TextViewerUndoManager

        public TextViewerUndoManager​(int undoLevel)
        Creates a new undo manager who remembers the specified number of edit commands.
        Parameters:
        undoLevel - the length of this manager's history
    • Method Detail

      • beginCompoundChange

        public void beginCompoundChange()
        Description copied from interface: IUndoManager
        Signals the undo manager that all subsequent changes until endCompoundChange is called are to be undone in one piece.
        Specified by:
        beginCompoundChange in interface IUndoManager
      • endCompoundChange

        public void endCompoundChange()
        Description copied from interface: IUndoManager
        Signals the undo manager that the sequence of changes which started with beginCompoundChange has been finished. All subsequent changes are considered to be individually undo-able.
        Specified by:
        endCompoundChange in interface IUndoManager
      • setMaximalUndoLevel

        public void setMaximalUndoLevel​(int undoLevel)
        Description copied from interface: IUndoManager
        The given parameter determines the maximal length of the history remembered by the undo manager.
        Specified by:
        setMaximalUndoLevel in interface IUndoManager
        Parameters:
        undoLevel - the length of this undo manager's history
      • connect

        public void connect​(ITextViewer textViewer)
        Description copied from interface: IUndoManager
        Connects this undo manager to the given text viewer.
        Specified by:
        connect in interface IUndoManager
        Parameters:
        textViewer - the viewer the undo manager is connected to
      • disconnect

        public void disconnect()
        Description copied from interface: IUndoManager
        Disconnects this undo manager from its text viewer. If this undo manager hasn't been connected before this operation has no effect.
        Specified by:
        disconnect in interface IUndoManager
      • reset

        public void reset()
        Description copied from interface: IUndoManager
        Resets the history of the undo manager. After that call, there aren't any undo-able or redo-able text changes.
        Specified by:
        reset in interface IUndoManager
      • redoable

        public boolean redoable()
        Description copied from interface: IUndoManager
        Returns whether at least one text change can be repeated. A text change can be repeated only if it was executed and rolled back.
        Specified by:
        redoable in interface IUndoManager
        Returns:
        true if at least on text change can be repeated
      • undoable

        public boolean undoable()
        Description copied from interface: IUndoManager
        Returns whether at least one text change can be rolled back.
        Specified by:
        undoable in interface IUndoManager
        Returns:
        true if at least one text change can be rolled back
      • redo

        public void redo()
        Description copied from interface: IUndoManager
        Repeats the most recently rolled back text change.
        Specified by:
        redo in interface IUndoManager
      • undo

        public void undo()
        Description copied from interface: IUndoManager
        Rolls back the most recently executed text change.
        Specified by:
        undo in interface IUndoManager