StateEdit JDK 1.6)

Methods

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public boolean addEdit (UndoableEdit anEdit) [Inherited From AbstractUndoableEdit]

This default implementation returns false.

public boolean canRedo () [Inherited From AbstractUndoableEdit]

Returns true if this edit is alive and hasBeenDone is false.

Returns true if this edit is alive
and hasBeenDone is false.
Returns: true if this edit is alive and hasBeenDone is false
See Also: AbstractUndoableEdit.die(), AbstractUndoableEdit.undo(), AbstractUndoableEdit.redo(),

public boolean canUndo () [Inherited From AbstractUndoableEdit]

Returns true if this edit is alive and hasBeenDone is true.

Returns true if this edit is alive
and hasBeenDone is true.
Returns: true if this edit is alive and hasBeenDone is true
See Also: AbstractUndoableEdit.die(), AbstractUndoableEdit.undo(), AbstractUndoableEdit.redo(),

public void die () [Inherited From AbstractUndoableEdit]

Sets alive to false.

Sets alive to false. Note that this is a one way operation; dead edits cannot be resurrected. Sending undo or redo to a dead edit results in an exception being thrown.

Typically an edit is killed when it is consolidated by another edit's addEdit or replaceEdit method, or when it is dequeued from an UndoManager.

public void end ()

Gets the post-edit state of the StateEditable object and ends the edit.

public String getPresentationName () [Overrides AbstractUndoableEdit]

Gets the presentation name for this edit

public String getRedoPresentationName () [Inherited From AbstractUndoableEdit]

Retreives the value from the defaults table with key AbstractUndoableEdit.redoText and returns that value followed by a space, followed by getPresentationName.

Retreives the value from the defaults table with key
AbstractUndoableEdit.redoText and returns
that value followed by a space, followed by
getPresentationName.
If getPresentationName returns "",
then the defaults value is returned alone.
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(),

public String getUndoPresentationName () [Inherited From AbstractUndoableEdit]

Retreives the value from the defaults table with key AbstractUndoableEdit.undoText and returns that value followed by a space, followed by getPresentationName.

Retreives the value from the defaults table with key
AbstractUndoableEdit.undoText and returns
that value followed by a space, followed by
getPresentationName.
If getPresentationName returns "",
then the defaults value is returned alone.
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(),

protected void init (StateEditable anObject, String name)

public boolean isSignificant () [Inherited From AbstractUndoableEdit]

This default implementation returns true.

public void redo () [Overrides AbstractUndoableEdit]

Tells the edited object to apply the state after the edit

protected void removeRedundantState ()

Remove redundant key/values in state hashtables.

public boolean replaceEdit (UndoableEdit anEdit) [Inherited From AbstractUndoableEdit]

This default implementation returns false.

public String toString () [Inherited From AbstractUndoableEdit]

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

public void undo () [Overrides AbstractUndoableEdit]

Tells the edited object to apply the state prior to the edit

Fields

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pack-private boolean alive [Inherited From AbstractUndoableEdit]

True if this edit has not received die; defaults to true.

pack-private boolean hasBeenDone [Inherited From AbstractUndoableEdit]

Defaults to true; becomes false if this edit is undone, true again if it is redone.

protected StateEditable object

The object being edited

protected Hashtable<Object, Object> postState

The state information after the edit

protected Hashtable<Object, Object> preState

The state information prior to the edit

protectedfinalstatic String RCSID = "$Id: StateEdit.java,v 1.6 1997/10/01 20:05:51 sandipc Exp $"

protectedfinalstatic String RedoName = "Redo" [Inherited From AbstractUndoableEdit]

String returned by getRedoPresentationName; as of Java 2 platform v1.3.1 this field is no longer used.

String returned by getRedoPresentationName;
as of Java 2 platform v1.3.1 this field is no longer used. This value
is now localized and comes from the defaults table with key
AbstractUndoableEdit.redoText.
See Also: UIDefaults,

protectedfinalstatic String UndoName = "Undo" [Inherited From AbstractUndoableEdit]

String returned by getUndoPresentationName; as of Java 2 platform v1.3.1 this field is no longer used.

String returned by getUndoPresentationName;
as of Java 2 platform v1.3.1 this field is no longer used. This value
is now localized and comes from the defaults table with key
AbstractUndoableEdit.undoText.
See Also: UIDefaults,

protected String undoRedoName

The undo/redo presentation name