org.pushingpixels.substance.api.combo.WidestComboPopupPrototype Maven / Gradle / Ivy
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A fork of @kirilcool's substance project
/*
* Copyright (c) 2005-2010 Substance Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of Substance Kirill Grouchnikov nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.pushingpixels.substance.api.combo;
import java.awt.Component;
import javax.swing.JComboBox;
import javax.swing.JList;
import org.pushingpixels.substance.internal.ui.SubstanceComboBoxUI;
/**
* Sample core implementation of {@link ComboPopupPrototypeCallback} interface
* that returns the widest combo entry. This class is part of officially
* supported API.
*
* @author Kirill Grouchnikov
*/
public class WidestComboPopupPrototype implements ComboPopupPrototypeCallback {
/*
* (non-Javadoc)
*
* @seeorg.pushingpixels.substance.combo.ComboPopupPrototypeCallback#
* getPopupPrototypeDisplayValue(javax.swing.JComboBox)
*/
@Override
public Object getPopupPrototypeDisplayValue(JComboBox jc) {
int maxWidth = -1;
Object prototype = null;
JList list = ((SubstanceComboBoxUI) jc.getUI()).getPopup().getList();
for (int i = 0; i < jc.getModel().getSize(); i++) {
Object elem = jc.getModel().getElementAt(i);
Component renderer = jc.getRenderer().getListCellRendererComponent(
list, elem, i, false, false);
if (renderer != null) {
int rWidth = renderer.getPreferredSize().width;
if (rWidth > maxWidth) {
maxWidth = rWidth;
prototype = elem;
}
}
}
return prototype;
}
}