PenInput.java

package edu.stanford.hci.r3.pen;

import java.util.ArrayList;
import java.util.List;

import edu.stanford.hci.r3.pen.streaming.listeners.PenListener;
import edu.stanford.hci.r3.util.DebugUtils;

public abstract class PenInput {

        protected boolean liveMode = false;

        private String name;

        protected List<PenListener> penListenersToAdd = new ArrayList<PenListener>();

        public PenInput(String penName) {
                setName(penName);
        }

        public void addLivePenListener(PenListener penListener) {
                if (!isLive()) {
                        DebugUtils.println("We are not registering this listener [" + penListener.toString()
                                        + "] with the event dispatcher at the moment. The Pen is not in Live Mode.");
                        DebugUtils.println("We will keep this listener around until you startLiveMode().");
                        penListenersToAdd.add(penListener);
                }
        }

        public String getName() {
                return name;
        }

        public boolean isLive() {
                return liveMode;
        }

        public void removeLivePenListener(PenListener penListener) {
                if (penListenersToAdd.contains(penListener)) {
                        penListenersToAdd.remove(penListener);
                        DebugUtils.println("Removed " + penListener + " from the cache of listeners.");
                }
        }

        public void setName(String nomDePlume) {
                name = nomDePlume;
        }

        public abstract void startLiveMode();

        public abstract void stopLiveMode();

}

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