import java.util.*;

public class ArrayCollectionTester implements Process {

    protected static final String INPUT_PROMPT =
        "In the Input line, please enter the method identifier " +
        "and, if applicable, the argument.";

    protected GUI gui;

    protected ArrayCollection myCollection = new ArrayCollection();

    public ArrayCollectionTester() {

        gui = new GUI (this);
        gui.println (INPUT_PROMPT);

    } // constructor


    public void processInput (String s) {

        final String ADDED = 
            "The element has been added to the ArrayCollection.";

        final String NOT_ADDED =
            "The element has not been added to the ArrayCollection " + 
            "because it would\n have been a duplicate, and duplicates " + 
            "are not allowed.";

        final String CONTAINED = 
        "The element is contained in the ArrayCollection.";

        final String NOT_CONTAINED =
            "The element is not contained in the ArrayCollection.";

        final String EMPTY = "The ArrayCollection is empty.";

        final String NOT_EMPTY = "The ArrayCollection is not empty.";

        String operation,
               element;

        StringTokenizer tokens = new StringTokenizer (s);
        operation = tokens.nextToken();
        if (operation.equals ("isEmpty"))
            if (myCollection.isEmpty())
                gui.println (EMPTY);
            else
                gui.println (NOT_EMPTY);
        else {

            element = tokens.nextToken();
            if (operation.equals ("add"))
                if (myCollection.add (element))
                    gui.println (ADDED);
                else
                    gui.println (NOT_ADDED);
            else if (operation.equals ("contains"))
                if (myCollection.contains (element))
                    gui.println (CONTAINED);
                else
                    gui.println (NOT_CONTAINED);

        } // operation add or contains
        gui.println ("\n\n" + INPUT_PROMPT);

   } // method processInput


} // class ArrayCollectionTester