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- /*
- * Copyright (c) 2006-2014 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.addons.ui_swing;
-
- import java.awt.Dimension;
-
- import javax.swing.JComboBox;
- import javax.swing.JComponent;
- import javax.swing.JPopupMenu;
- import javax.swing.event.PopupMenuEvent;
- import javax.swing.event.PopupMenuListener;
-
- /**
- * Modifies the popup of a JComboBox to make it the full width of the components it is displaying.
- */
- public class ComboBoxWidthModifier implements PopupMenuListener {
-
- @Override
- public void popupMenuWillBecomeVisible(final PopupMenuEvent e) {
- final JComboBox<?> box = (JComboBox) e.getSource();
- final Object comp = box.getUI().getAccessibleChild(box, 0);
- if (!(comp instanceof JPopupMenu)) {
- return;
- }
- final JComponent scrollPane = (JComponent) ((JPopupMenu) comp).getComponent(0);
- final Dimension size = new Dimension(box.getPreferredSize().width,
- scrollPane.getPreferredSize().height);
- scrollPane.setPreferredSize(size);
- scrollPane.setMaximumSize(size);
- }
-
- /**
- * {@inheritDoc}
- *
- * @param e Popup menu event
- */
- @Override
- public void popupMenuWillBecomeInvisible(final PopupMenuEvent e) {
- //Ignore
- }
-
- @Override
- public void popupMenuCanceled(final PopupMenuEvent e) {
- //Ignore
- }
-
- }
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