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package javax.faces.component;
/**
* <p class="changed_added_2_0">Components that want to leverage the
* partial state saving feature must implement this interface instead of
* implementing {@link StateHolder}, from which this interface
* inherits.</p>
* @since 2.0
*/
public interface
PartialStateHolder extends
StateHolder {
/**
* <p class="changed_added_2_0">The runtime must ensure that the
* {@link #markInitialState} method is called on each instance of
* this interface in the view at the appropriate time to indicate
* the component is in its initial state. The implementor of the
* interface must ensure that {@link #initialStateMarked} returns
* <code>true</code> from the time <code>markInitialState()</code>
* is called until {@link #clearInitialState} is called, after which
* time <code>initialStateMarked()</code> must return
* <code>false</code>. Also, during the time that the instance
* returns <code>true</code> from <code>initialStateMarked()</code>,
* the implementation must return only the state that has changed in
* its implementation of {@link StateHolder#saveState}.</p>
* @since 2.0
*/
void
markInitialState();
/**
* <p class="changed_added_2_0">Return <code>true</code> if delta
* state changes are being tracked, otherwise <code>false</code></p>
* @since 2.0
*/
boolean
initialStateMarked();
/**
* <p class="changed_added_2_0">Reset the PartialStateHolder to a
* non-delta tracking state.</p>
* @since 2.0
*/
void
clearInitialState();
}