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- /*
- * Copyright (c) 2006-2017 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.Container;
- 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) ((Container) comp).getComponent(0);
- final Dimension size = new Dimension(box.getPreferredSize().width,
- scrollPane.getPreferredSize().height);
- scrollPane.setPreferredSize(size);
- scrollPane.setMaximumSize(size);
- }
-
- @Override
- public void popupMenuWillBecomeInvisible(final PopupMenuEvent e) {
- //Ignore
- }
-
- @Override
- public void popupMenuCanceled(final PopupMenuEvent e) {
- //Ignore
- }
-
- }
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