org.nakedobjects.applib.events.ActionArgumentEvent Maven / Gradle / Ivy
package org.nakedobjects.applib.events;
import org.nakedobjects.applib.Identifier;
/**
* Represents a check as to whether a particular argument for an action is valid or not.
*
*
* If {@link #getReason()} is not null then provides the reason why the argument is invalid;
* otherwise the argument is valid.
*
*
* Called once per argument, and before {@link ActionInvocationEvent}.
*/
public class ActionArgumentEvent extends ValidityEvent implements ProposedHolderEvent {
private static final long serialVersionUID = 1L;
private final Object[] args;
private final int position;
private final Object proposed;
public ActionArgumentEvent(final Object source, final Identifier actionIdentifier, final Object[] args, final int position) {
super(source, actionIdentifier);
this.args = args;
this.position = position;
this.proposed = args[position];
}
public Object[] getArgs() {
return args;
}
/**
* The position (0-based) of the invalid argument.
*
* @return
*/
public int getPosition() {
return position;
}
public Object getProposed() {
return proposed;
}
}