1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/friendpackage/src/org/apidesign/friendpackage/api/Item.java	Thu Oct 30 21:30:10 2014 +0100
     1.3 @@ -0,0 +1,49 @@
     1.4 +package org.apidesign.friendpackage.api;
     1.5 +
     1.6 +import javax.swing.event.ChangeEvent;
     1.7 +import javax.swing.event.ChangeListener;
     1.8 +import org.apidesign.friendpackage.impl.Accessor;
     1.9 +
    1.10 +/** Class in API that everyone can use.
    1.11 + *
    1.12 + * @author Jaroslav Tulach
    1.13 + */
    1.14 +// BEGIN: design.less.friend.Item
    1.15 +public final class Item {
    1.16 +    private int value;
    1.17 +    private ChangeListener listener;
    1.18 +
    1.19 +    /** Only friends can create instances. */
    1.20 +    Item() {
    1.21 +    }
    1.22 +    
    1.23 +    /** Anyone can change value of the item. 
    1.24 +     */
    1.25 +    public void setValue(int newValue) {
    1.26 +        value = newValue;
    1.27 +        ChangeListener l = listener;
    1.28 +        if (l != null) {
    1.29 +            l.stateChanged(new ChangeEvent(this));
    1.30 +        }
    1.31 +    }
    1.32 +    
    1.33 +    /** Anyone can get the value of the item. 
    1.34 +     */
    1.35 +    public int getValue() {
    1.36 +        return value;
    1.37 +    }
    1.38 +    
    1.39 +    /** Only friends can listen to changes.
    1.40 +     */
    1.41 +    void addChangeListener(ChangeListener l) {
    1.42 +        assert listener == null;
    1.43 +        listener = l;
    1.44 +    }
    1.45 +// FINISH: design.less.friend.Item
    1.46 +
    1.47 +    // BEGIN: design.less.friend.Item.static
    1.48 +    static {
    1.49 +        Accessor.setDefault(new AccessorImpl());
    1.50 +    }
    1.51 +    // END: design.less.friend.Item.static
    1.52 +}