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package bjc.data;
/**
* A stateful holder that swaps between two values of the same type.
*
* @author EVE
*
* @param <E>
* The value stored in the toggle.
*/
public interface Toggle<E> {
/**
* Retrieve the currently-aligned value of this toggle, and swap the value to
* the new one.
*
* @return The previously-aligned value.
*/
E get();
/**
* Retrieve the currently-aligned value without altering the alignment.
*
* @return The currently-aligned value.
*/
E peek();
/**
* Change the alignment of the toggle.
*
* @param isLeft
* Whether the toggle should be left-aligned or not.
*/
void set(boolean isLeft);
}
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