public interface DoStep
Modifier and Type | Method and Description |
---|---|
boolean |
apply(int action)
Returns true on success.
|
Displayable |
getD()
May return null.
|
boolean |
isEmpty() |
boolean |
isIdenticalTo(Object ob) |
static final int UNDO
static final int REDO
boolean apply(int action)
boolean isEmpty()
Displayable getD()
boolean isIdenticalTo(Object ob)
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