LWChoicePeer.java revision 4882
0N/A/*
2362N/A * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A
0N/Apackage sun.lwawt;
0N/A
0N/Aimport java.awt.*;
0N/Aimport java.awt.event.ItemEvent;
0N/Aimport java.awt.event.ItemListener;
0N/Aimport java.awt.peer.ChoicePeer;
0N/A
0N/Aimport javax.accessibility.Accessible;
0N/Aimport javax.swing.*;
0N/A
0N/Afinal class LWChoicePeer extends LWComponentPeer<Choice, JComboBox<String>>
0N/A implements ChoicePeer, ItemListener {
0N/A
0N/A /**
0N/A * According to Choice specification item events are sent in response to
0N/A * user input, but not in response to calls to select(). But JComboBox are
0N/A * sent item events in both cases. Should be used under delegateLock.
0N/A */
0N/A private boolean skipPostMessage;
374N/A
0N/A LWChoicePeer(final Choice target,
0N/A final PlatformComponent platformComponent) {
0N/A super(target, platformComponent);
0N/A }
0N/A
0N/A @Override
0N/A protected JComboBox<String> createDelegate() {
0N/A return new JComboBoxDelegate();
0N/A }
0N/A
0N/A @Override
0N/A public void initialize() {
0N/A super.initialize();
0N/A final Choice choice = getTarget();
0N/A final JComboBox<String> combo = getDelegate();
0N/A synchronized (getDelegateLock()) {
0N/A final int count = choice.getItemCount();
0N/A for (int i = 0; i < count; ++i) {
0N/A combo.addItem(choice.getItem(i));
0N/A }
0N/A select(choice.getSelectedIndex());
0N/A
0N/A // NOTE: the listener must be added at the very end, otherwise it
0N/A // fires events upon initialization of the combo box.
0N/A combo.addItemListener(this);
0N/A }
0N/A }
0N/A
0N/A @Override
0N/A public void itemStateChanged(final ItemEvent e) {
0N/A // AWT Choice sends SELECTED event only whereas JComboBox
0N/A // sends both SELECTED and DESELECTED.
0N/A if (e.getStateChange() == ItemEvent.SELECTED) {
0N/A synchronized (getDelegateLock()) {
0N/A if (skipPostMessage) {
0N/A return;
0N/A }
0N/A getTarget().select(getDelegate().getSelectedIndex());
0N/A }
0N/A postEvent(new ItemEvent(getTarget(), ItemEvent.ITEM_STATE_CHANGED,
0N/A e.getItem(), ItemEvent.SELECTED));
0N/A }
0N/A }
0N/A
0N/A @Override
0N/A public void add(final String item, final int index) {
0N/A synchronized (getDelegateLock()) {
0N/A getDelegate().insertItemAt(item, index);
0N/A }
0N/A }
0N/A
0N/A @Override
0N/A public void remove(final int index) {
0N/A synchronized (getDelegateLock()) {
0N/A // We shouldn't post event, if selected item was removed.
0N/A skipPostMessage = true;
0N/A getDelegate().removeItemAt(index);
1788N/A skipPostMessage = false;
1788N/A }
1788N/A }
1788N/A
1788N/A @Override
1788N/A public void removeAll() {
1788N/A synchronized (getDelegateLock()) {
1788N/A getDelegate().removeAllItems();
1788N/A }
1788N/A }
0N/A
1788N/A @Override
0N/A public void select(final int index) {
1788N/A synchronized (getDelegateLock()) {
1788N/A if (index != getDelegate().getSelectedIndex()) {
0N/A skipPostMessage = true;
0N/A getDelegate().setSelectedIndex(index);
0N/A skipPostMessage = false;
0N/A }
0N/A }
0N/A }
0N/A
0N/A @Override
0N/A public boolean isFocusable() {
0N/A return true;
0N/A }
0N/A
0N/A private final class JComboBoxDelegate extends JComboBox<String> {
0N/A
0N/A // Empty non private constructor was added because access to this
0N/A // class shouldn't be emulated by a synthetic accessor method.
0N/A JComboBoxDelegate() {
0N/A super();
0N/A }
0N/A
0N/A @Override
0N/A public boolean hasFocus() {
0N/A return getTarget().hasFocus();
0N/A }
0N/A
0N/A //Needed for proper popup menu location
0N/A @Override
0N/A public Point getLocationOnScreen() {
0N/A return LWChoicePeer.this.getLocationOnScreen();
0N/A }
0N/A
0N/A /**
* We should post ITEM_STATE_CHANGED event when the same element is
* reselected.
*/
@Override
public void setSelectedItem(final Object anObject) {
final Object oldSelection = selectedItemReminder;
if (oldSelection != null && oldSelection.equals(anObject)) {
selectedItemChanged();
}
super.setSelectedItem(anObject);
}
@Override
public void firePopupMenuWillBecomeVisible() {
super.firePopupMenuWillBecomeVisible();
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JPopupMenu popupMenu = getPopupMenu();
if (popupMenu != null) {
if (popupMenu.getInvoker() != LWChoicePeer.this.getTarget()) {
popupMenu.setVisible(false);
popupMenu.show(LWChoicePeer.this.getTarget(), 0, 0);
}
}
}
});
}
private JPopupMenu getPopupMenu() {
for (int i = 0; i < getAccessibleContext().getAccessibleChildrenCount(); i++) {
Accessible child = getAccessibleContext().getAccessibleChild(i);
if (child instanceof JPopupMenu) {
return (JPopupMenu) child;
}
}
return null;
}
}
}