| /* |
| * Copyright (c) 2011, 2015, 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.Checkbox; |
| import java.awt.CheckboxGroup; |
| import java.awt.Component; |
| import java.awt.Dimension; |
| import java.awt.event.ItemEvent; |
| import java.awt.event.ItemListener; |
| import java.awt.peer.CheckboxPeer; |
| import java.beans.Transient; |
| |
| import javax.swing.JCheckBox; |
| import javax.swing.JComponent; |
| import javax.swing.JRadioButton; |
| import javax.swing.JToggleButton; |
| import javax.swing.SwingUtilities; |
| |
| /** |
| * Lightweight implementation of {@link CheckboxPeer}. Delegates most of the |
| * work to the {@link JCheckBox} and {@link JRadioButton}, which are placed |
| * inside an empty {@link JComponent}. |
| */ |
| final class LWCheckboxPeer |
| extends LWComponentPeer<Checkbox, LWCheckboxPeer.CheckboxDelegate> |
| implements CheckboxPeer, ItemListener { |
| |
| LWCheckboxPeer(final Checkbox target, |
| final PlatformComponent platformComponent) { |
| super(target, platformComponent); |
| } |
| |
| @Override |
| CheckboxDelegate createDelegate() { |
| return new CheckboxDelegate(); |
| } |
| |
| @Override |
| Component getDelegateFocusOwner() { |
| return getDelegate().getCurrentButton(); |
| } |
| |
| @Override |
| void initializeImpl() { |
| super.initializeImpl(); |
| setLabel(getTarget().getLabel()); |
| setState(getTarget().getState()); |
| setCheckboxGroup(getTarget().getCheckboxGroup()); |
| } |
| |
| @Override |
| public void itemStateChanged(final ItemEvent e) { |
| // group.setSelectedCheckbox() will repaint the component |
| // to let LWCheckboxPeer correctly handle it we should call it |
| // after the current event is processed |
| SwingUtilities.invokeLater(new Runnable() { |
| @Override |
| public void run() { |
| boolean postEvent = true; |
| final CheckboxGroup group = getTarget().getCheckboxGroup(); |
| if (group != null) { |
| if (e.getStateChange() == ItemEvent.SELECTED) { |
| if (group.getSelectedCheckbox() != getTarget()) { |
| group.setSelectedCheckbox(getTarget()); |
| } else { |
| postEvent = false; |
| } |
| } else { |
| postEvent = false; |
| if (group.getSelectedCheckbox() == getTarget()) { |
| // Don't want to leave the group with no selected |
| // checkbox. |
| getTarget().setState(true); |
| } |
| } |
| } else { |
| getTarget().setState(e.getStateChange() |
| == ItemEvent.SELECTED); |
| } |
| if (postEvent) { |
| postEvent(new ItemEvent(getTarget(), |
| ItemEvent.ITEM_STATE_CHANGED, |
| getTarget().getLabel(), |
| e.getStateChange())); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| public void setCheckboxGroup(final CheckboxGroup g) { |
| synchronized (getDelegateLock()) { |
| getDelegate().getCurrentButton().removeItemListener(this); |
| getDelegate().setRadioButton(g != null); |
| getDelegate().getCurrentButton().addItemListener(this); |
| } |
| repaintPeer(); |
| } |
| |
| @Override |
| public void setLabel(final String label) { |
| synchronized (getDelegateLock()) { |
| getDelegate().setText(label); |
| } |
| } |
| |
| @Override |
| public void setState(final boolean state) { |
| synchronized (getDelegateLock()) { |
| getDelegate().getCurrentButton().removeItemListener(this); |
| getDelegate().setSelected(state); |
| getDelegate().getCurrentButton().addItemListener(this); |
| } |
| repaintPeer(); |
| } |
| |
| @Override |
| public boolean isFocusable() { |
| return true; |
| } |
| |
| @SuppressWarnings("serial")// Safe: outer class is non-serializable. |
| final class CheckboxDelegate extends JComponent { |
| |
| private final JCheckBox cb; |
| private final JRadioButton rb; |
| |
| CheckboxDelegate() { |
| super(); |
| cb = new JCheckBox() { |
| @Override |
| public boolean hasFocus() { |
| return getTarget().hasFocus(); |
| } |
| }; |
| rb = new JRadioButton() { |
| @Override |
| public boolean hasFocus() { |
| return getTarget().hasFocus(); |
| } |
| }; |
| setLayout(null); |
| setRadioButton(false); |
| add(rb); |
| add(cb); |
| } |
| |
| @Override |
| public void setEnabled(final boolean enabled) { |
| super.setEnabled(enabled); |
| rb.setEnabled(enabled); |
| cb.setEnabled(enabled); |
| } |
| |
| @Override |
| public void setOpaque(final boolean isOpaque) { |
| super.setOpaque(isOpaque); |
| rb.setOpaque(isOpaque); |
| cb.setOpaque(isOpaque); |
| } |
| |
| @Override |
| @Deprecated |
| public void reshape(final int x, final int y, final int w, |
| final int h) { |
| super.reshape(x, y, w, h); |
| cb.setBounds(0, 0, w, h); |
| rb.setBounds(0, 0, w, h); |
| } |
| |
| @Override |
| public Dimension getPreferredSize() { |
| return getCurrentButton().getPreferredSize(); |
| } |
| |
| @Override |
| @Transient |
| public Dimension getMinimumSize() { |
| return getCurrentButton().getMinimumSize(); |
| } |
| |
| void setRadioButton(final boolean showRadioButton) { |
| rb.setVisible(showRadioButton); |
| cb.setVisible(!showRadioButton); |
| } |
| |
| @Transient |
| JToggleButton getCurrentButton() { |
| return cb.isVisible() ? cb : rb; |
| } |
| |
| void setText(final String label) { |
| cb.setText(label); |
| rb.setText(label); |
| } |
| |
| void setSelected(final boolean state) { |
| cb.setSelected(state); |
| rb.setSelected(state); |
| } |
| } |
| } |