| author | Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
| Thu, 30 Oct 2014 21:30:10 +0100 | |
| changeset 409 | 40cabcdcd2be |
| parent 285 | 321b25b8f6f8 |
| permissions | -rw-r--r-- |
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package org.apidesign.friendpackage.api; |
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import javax.swing.event.ChangeEvent; |
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import javax.swing.event.ChangeListener; |
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import org.apidesign.friendpackage.impl.Accessor; |
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/** Class in API that everyone can use. |
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* |
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* @author Jaroslav Tulach |
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*/ |
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// BEGIN: design.less.friend.Item |
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public final class Item {
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private int value; |
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private ChangeListener listener; |
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|
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/** Only friends can create instances. */ |
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Item() {
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} |
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|
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/** Anyone can change value of the item. |
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*/ |
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public void setValue(int newValue) {
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value = newValue; |
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ChangeListener l = listener; |
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if (l != null) {
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l.stateChanged(new ChangeEvent(this)); |
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} |
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} |
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/** Anyone can get the value of the item. |
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*/ |
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public int getValue() {
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return value; |
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} |
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/** Only friends can listen to changes. |
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*/ |
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void addChangeListener(ChangeListener l) {
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assert listener == null; |
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listener = l; |
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} |
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// FINISH: design.less.friend.Item |
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|
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// BEGIN: design.less.friend.Item.static |
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static {
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Accessor.setDefault(new AccessorImpl()); |
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} |
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// END: design.less.friend.Item.static |
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} |