components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/swing/property/ComboBoxPropertySynchronizer.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/visual-panels/core/src/java/util/com/oracle/solaris/vp/util/swing/property/ComboBoxPropertySynchronizer.java Thu May 24 04:16:47 2012 -0400
@@ -0,0 +1,118 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
+ */
+
+package com.oracle.solaris.vp.util.swing.property;
+
+import java.awt.event.*;
+import javax.swing.*;
+import com.oracle.solaris.vp.util.misc.ObjectUtil;
+import com.oracle.solaris.vp.util.misc.property.*;
+
+/**
+ * The {@code ComboBoxPropertySynchronizer} class synchronizes a {@link
+ * MutableProperty} with a {@code JComboBox} so that changes in one will
+ * automatically be reflected in the other.
+ */
+public class ComboBoxPropertySynchronizer<T>
+ extends PropertySynchronizer<T, JComboBox> {
+
+ //
+ // Instance data
+ //
+
+ private ItemListener listener =
+ new ItemListener() {
+ @Override
+ public void itemStateChanged(ItemEvent e) {
+ objectChanged();
+ }
+ };
+
+ //
+ // Constructors
+ //
+
+ public ComboBoxPropertySynchronizer(MutableProperty<T> property,
+ JComboBox combo, boolean initFromProp) {
+
+ super(property, combo, initFromProp);
+ combo.addItemListener(listener);
+ }
+
+ /**
+ * Constructs a {@code ComboBoxPropertySynchronizer} with initial
+ * synchronization from the property to the {@code JComboBox}.
+ */
+ public ComboBoxPropertySynchronizer(MutableProperty<T> property,
+ JComboBox combo) {
+
+ this(property, combo, true);
+ }
+
+ //
+ // PropertySynchronizer methods
+ //
+
+ @Override
+ public void desynchronize() {
+ super.desynchronize();
+ getObject().removeItemListener(listener);
+ }
+
+ @Override
+ public T getValue() {
+ return toT(getObject().getSelectedItem());
+ }
+
+ @Override
+ public void setValue(T t) {
+ Object selection = null;
+ JComboBox combo = getObject();
+ ComboBoxModel model = combo.getModel();
+ for (int i = 0, n = model.getSize(); i < n; i++) {
+ Object element = model.getElementAt(i);
+ T item = toT(element);
+ if (ObjectUtil.equals(toT(element), t)) {
+ selection = element;
+ break;
+ }
+ }
+ combo.setSelectedItem(selection);
+ }
+
+ //
+ // ComboBoxPropertySynchronizer methods
+ //
+
+ /**
+ * Gets the value from the given item from the {@code ComboBoxModel} of the
+ * {@code JComboBox}s of this {@code ComboBoxPropertySynchronizer}. This
+ * implementation returns {@code item}, cast to a {@code T}.
+ */
+ @SuppressWarnings({"unchecked"})
+ protected T toT(Object item) {
+ return (T)item;
+ }
+}