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Interface implemented by classes that support undo.
| Method Summary | |
void |
addUndoPoint()
adds an undo point to the undo history |
boolean |
canUndo()
returns whether an undo is possible, i.e. |
void |
clearUndo()
removes the undo history |
boolean |
isUndoEnabled()
returns whether undo support is enabled |
void |
setUndoEnabled(boolean enabled)
sets whether undo support is enabled |
void |
undo()
undoes the last action |
| Method Detail |
public boolean isUndoEnabled()
public void setUndoEnabled(boolean enabled)
public void clearUndo()
public boolean canUndo()
public void undo()
public void addUndoPoint()
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