--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/macosx/classes/sun/lwawt/LWScrollBarPeer.java Tue Mar 06 20:34:38 2012 +0000
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+package sun.lwawt;
+
+import java.awt.Adjustable;
+import java.awt.Dimension;
+import java.awt.Scrollbar;
+import java.awt.event.AdjustmentEvent;
+import java.awt.event.AdjustmentListener;
+import java.awt.peer.ScrollbarPeer;
+
+import javax.swing.JScrollBar;
+
+final class LWScrollBarPeer extends LWComponentPeer<Scrollbar, JScrollBar>
+ implements ScrollbarPeer, AdjustmentListener {
+
+ //JScrollBar fires two changes with firePropertyChange (one for old value
+ // and one for new one.
+ // We save the last value and don't fire event if not changed.
+ private int currentValue;
+
+ LWScrollBarPeer(final Scrollbar target,
+ final PlatformComponent platformComponent) {
+ super(target, platformComponent);
+ }
+
+ @Override
+ protected JScrollBar createDelegate() {
+ return new JScrollBar();
+ }
+
+ @Override
+ public void initialize() {
+ super.initialize();
+ final Scrollbar target = getTarget();
+ setValues(target.getValue(), target.getVisibleAmount(),
+ target.getMinimum(), target.getMaximum());
+
+ final int orientation = target.getOrientation();
+ final JScrollBar delegate = getDelegate();
+ synchronized (getDelegateLock()) {
+ delegate.setOrientation(orientation == Scrollbar.HORIZONTAL
+ ? Adjustable.HORIZONTAL
+ : Adjustable.VERTICAL);
+ delegate.addAdjustmentListener(this);
+ }
+ }
+
+ @Override
+ public void setValues(final int value, final int visible, final int minimum,
+ final int maximum) {
+ synchronized (getDelegateLock()) {
+ currentValue = value;
+ getDelegate().setValues(value, visible, minimum, maximum);
+ }
+ }
+
+ @Override
+ public void setLineIncrement(final int l) {
+ synchronized (getDelegateLock()) {
+ getDelegate().setUnitIncrement(l);
+ }
+ }
+
+ @Override
+ public void setPageIncrement(final int l) {
+ synchronized (getDelegateLock()) {
+ getDelegate().setBlockIncrement(l);
+ }
+ }
+
+ @Override
+ public Dimension getPreferredSize() {
+ synchronized (getDelegateLock()) {
+ return getDelegate().getPreferredSize();
+ }
+ }
+
+ // Peer also registered as a listener for ComponentDelegate component
+ @Override
+ public void adjustmentValueChanged(final AdjustmentEvent e) {
+ final int value = e.getValue();
+ synchronized (getDelegateLock()) {
+ if (currentValue == value) {
+ return;
+ }
+ currentValue = value;
+ }
+ getTarget().setValueIsAdjusting(e.getValueIsAdjusting());
+ getTarget().setValue(value);
+ postEvent(new AdjustmentEvent(getTarget(), e.getID(),
+ e.getAdjustmentType(), value,
+ e.getValueIsAdjusting()));
+ }
+}