Java javax.swing.undo Class CompoundEdit（JDK8）

Field Detail

• edits

  protected Vector<UndoableEdit> edits

  The collection of UndoableEdits undone/redone en masse by this CompoundEdit.

Constructor Detail

• CompoundEdit

  public CompoundEdit()

Method Detail

• undo

  public void undo()
            throws CannotUndoException

  Sends undo to all contained UndoableEdits in the reverse of the order in which they were added.

  Specified by:

  undo in interface UndoableEdit

  Overrides:

  undo in class AbstractUndoableEdit

  Throws:

  CannotUndoException - if canUndo returns false

  See Also:

  AbstractUndoableEdit.canUndo()

• redo

  public void redo()
            throws CannotRedoException

  Sends redo to all contained UndoableEdits in the order in which they were added.

  Specified by:

  redo in interface UndoableEdit

  Overrides:

  redo in class AbstractUndoableEdit

  Throws:

  CannotRedoException - if canRedo returns false

  See Also:

  AbstractUndoableEdit.canRedo()

• lastEdit

  protected UndoableEdit lastEdit()

  Returns the last UndoableEdit in edits, or null if edits is empty.

• die

  public void die()

  Sends die to each subedit, in the reverse of the order that they were added.

  Specified by:

  die in interface UndoableEdit

  Overrides:

  die in class AbstractUndoableEdit

  See Also:

  die()

• addEdit

  public boolean addEdit(UndoableEdit anEdit)

  If this edit is inProgress, accepts anEdit and returns true.

  The last edit added to this CompoundEdit is given a chance to addEdit(anEdit). If it refuses (returns false), anEdit is given a chance to replaceEdit the last edit. If anEdit returns false here, it is added to edits.

  Specified by:

  addEdit in interface UndoableEdit

  Overrides:

  addEdit in class AbstractUndoableEdit

  Parameters:

  anEdit - the edit to be added

  Returns:

  true if the edit is inProgress; otherwise returns false

  See Also:

  UndoableEdit.addEdit(javax.swing.undo.UndoableEdit)

• end

  public void end()

  Sets inProgress to false.

  See Also:

  canUndo(), canRedo()

• canUndo

  public boolean canUndo()

  Returns false if isInProgress or if super returns false.

  Specified by:

  canUndo in interface UndoableEdit

  Overrides:

  canUndo in class AbstractUndoableEdit

  Returns:

  true if this edit is alive and hasBeenDone is true

  See Also:

  isInProgress()

• canRedo

  public boolean canRedo()

  Returns false if isInProgress or if super returns false.

  Specified by:

  canRedo in interface UndoableEdit

  Overrides:

  canRedo in class AbstractUndoableEdit

  Returns:

  true if this edit is alive and hasBeenDone is false

  See Also:

  isInProgress()

• isInProgress

  public boolean isInProgress()

  Returns true if this edit is in progress--that is, it has not received end. This generally means that edits are still being added to it.

  See Also:

  end()

• isSignificant

  public boolean isSignificant()

  Returns true if any of the UndoableEdits in edits do. Returns false if they all return false.

  Specified by:

  isSignificant in interface UndoableEdit

  Overrides:

  isSignificant in class AbstractUndoableEdit

  Returns:

  true

  See Also:

  UndoableEdit.isSignificant()

• getPresentationName

  public String getPresentationName()

  Returns getPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.

  Specified by:

  getPresentationName in interface UndoableEdit

  Overrides:

  getPresentationName in class AbstractUndoableEdit

  Returns:

  the empty string ""

  See Also:

  AbstractUndoableEdit.getUndoPresentationName(), AbstractUndoableEdit.getRedoPresentationName()

• getUndoPresentationName

  public String getUndoPresentationName()

  Returns getUndoPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.

  Specified by:

  getUndoPresentationName in interface UndoableEdit

  Overrides:

  getUndoPresentationName in class AbstractUndoableEdit

  Returns:

  the value from the defaults table with key AbstractUndoableEdit.undoText, followed by a space, followed by getPresentationName unless getPresentationName is "" in which case, the defaults value is returned alone.

  See Also:

  AbstractUndoableEdit.getPresentationName()

• getRedoPresentationName

  public String getRedoPresentationName()

  Returns getRedoPresentationName from the last UndoableEdit added to edits. If edits is empty, calls super.

  Specified by:

  getRedoPresentationName in interface UndoableEdit

  Overrides:

  getRedoPresentationName in class AbstractUndoableEdit

  Returns:

  the value from the defaults table with key AbstractUndoableEdit.redoText, followed by a space, followed by getPresentationName unless getPresentationName is "" in which case, the defaults value is returned alone.

  See Also:

  AbstractUndoableEdit.getPresentationName()

• toString

  public String toString()

  Returns a string that displays and identifies this object's properties.

  Overrides:

  toString in class AbstractUndoableEdit

  Returns:

  a String representation of this object