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package javax.faces.event;

import javax.faces.context.Flash;

/**
 *
 * <p class="changed_added_2_2">This event must be published by a call
 * to {@link javax.faces.application.Application#publishEvent} when a value
 * is stored in the flash.</p>
 *
 * @since 2.2
 */
public class PostPutFlashValueEvent extends SystemEvent {

    private static final long serialVersionUID = -6422204761759384353L;;

    // ------------------------------------------------------------ Constructors


    /**
     * <p class="changed_added_2_2">Instantiate a new
     * <code>PostPutFlashValueEvent</code> that indicates the argument
     * <code>key</code> was just put to the flash. If the argument is 
     * <code>null</code>, the literal {@link Flash#NULL_VALUE} must be passed
     * to the superclass constructor.</p>

     * @param key the key in the flash that was just added.
     *
     */
    public PostPutFlashValueEvent(String key) {
        super(null == key ? Flash.NULL_VALUE : key);
    }
    
    public String getKey() {
        return getSource().toString();
    }

}
