author | serb |
Tue, 14 May 2013 17:25:59 +0400 | |
changeset 17414 | 3e422b97a601 |
parent 13993 | 8b3fe3d8badb |
child 20153 | d5bf90bfcb6d |
permissions | -rw-r--r-- |
12047 | 1 |
/* |
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* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.lwawt; |
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import java.awt.Adjustable; |
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import java.awt.Scrollbar; |
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import java.awt.event.AdjustmentEvent; |
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import java.awt.event.AdjustmentListener; |
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import java.awt.peer.ScrollbarPeer; |
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import javax.swing.JScrollBar; |
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final class LWScrollBarPeer extends LWComponentPeer<Scrollbar, JScrollBar> |
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implements ScrollbarPeer, AdjustmentListener { |
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//JScrollBar fires two changes with firePropertyChange (one for old value |
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// and one for new one. |
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// We save the last value and don't fire event if not changed. |
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private int currentValue; |
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LWScrollBarPeer(final Scrollbar target, |
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final PlatformComponent platformComponent) { |
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super(target, platformComponent); |
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} |
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@Override |
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protected JScrollBar createDelegate() { |
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return new JScrollBar(); |
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} |
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@Override |
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void initializeImpl() { |
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super.initializeImpl(); |
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final Scrollbar target = getTarget(); |
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parents:
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changeset
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setLineIncrement(target.getUnitIncrement()); |
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parents:
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setPageIncrement(target.getBlockIncrement()); |
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setValues(target.getValue(), target.getVisibleAmount(), |
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target.getMinimum(), target.getMaximum()); |
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final int orientation = target.getOrientation(); |
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final JScrollBar delegate = getDelegate(); |
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synchronized (getDelegateLock()) { |
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delegate.setOrientation(orientation == Scrollbar.HORIZONTAL |
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? Adjustable.HORIZONTAL |
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: Adjustable.VERTICAL); |
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delegate.addAdjustmentListener(this); |
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} |
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} |
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@Override |
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public void setValues(final int value, final int visible, final int minimum, |
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final int maximum) { |
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synchronized (getDelegateLock()) { |
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currentValue = value; |
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getDelegate().setValues(value, visible, minimum, maximum); |
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} |
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} |
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@Override |
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public void setLineIncrement(final int l) { |
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synchronized (getDelegateLock()) { |
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getDelegate().setUnitIncrement(l); |
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} |
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} |
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@Override |
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public void setPageIncrement(final int l) { |
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synchronized (getDelegateLock()) { |
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getDelegate().setBlockIncrement(l); |
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} |
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} |
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// Peer also registered as a listener for ComponentDelegate component |
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@Override |
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public void adjustmentValueChanged(final AdjustmentEvent e) { |
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final int value = e.getValue(); |
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synchronized (getDelegateLock()) { |
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if (currentValue == value) { |
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return; |
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} |
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currentValue = value; |
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} |
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getTarget().setValueIsAdjusting(e.getValueIsAdjusting()); |
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getTarget().setValue(value); |
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postEvent(new AdjustmentEvent(getTarget(), e.getID(), |
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e.getAdjustmentType(), value, |
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e.getValueIsAdjusting())); |
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} |
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} |