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public interface IStateListener
A listener to changes in some state.
Clients may implement, but must not extend this interface.
Method Summary | |
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void |
handleStateChange(State state,
java.lang.Object oldValue)
Handles a change to the value in some state. |
Method Detail |
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void handleStateChange(State state, java.lang.Object oldValue)
state
- The state that has changed; never null
. The
value for this state has been updated to the new value.oldValue
- The old value; may be anything.
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